Commit | Line | Data |
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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | */ | |
36 | ||
37 | #define DEBUG_SUBSYSTEM S_OSC | |
38 | ||
9fdaf8c0 | 39 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 PT |
40 | |
41 | ||
42 | #include <lustre_dlm.h> | |
43 | #include <lustre_net.h> | |
44 | #include <lustre/lustre_user.h> | |
45 | #include <obd_cksum.h> | |
46 | #include <obd_ost.h> | |
d7e09d03 | 47 | |
d7e09d03 PT |
48 | #include <lustre_ha.h> |
49 | #include <lprocfs_status.h> | |
50 | #include <lustre_log.h> | |
51 | #include <lustre_debug.h> | |
52 | #include <lustre_param.h> | |
53 | #include <lustre_fid.h> | |
54 | #include "osc_internal.h" | |
55 | #include "osc_cl_internal.h" | |
56 | ||
57 | static void osc_release_ppga(struct brw_page **ppga, obd_count count); | |
58 | static int brw_interpret(const struct lu_env *env, | |
59 | struct ptlrpc_request *req, void *data, int rc); | |
60 | int osc_cleanup(struct obd_device *obd); | |
61 | ||
62 | /* Pack OSC object metadata for disk storage (LE byte order). */ | |
63 | static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, | |
64 | struct lov_stripe_md *lsm) | |
65 | { | |
66 | int lmm_size; | |
d7e09d03 PT |
67 | |
68 | lmm_size = sizeof(**lmmp); | |
69 | if (lmmp == NULL) | |
0a3bdb00 | 70 | return lmm_size; |
d7e09d03 PT |
71 | |
72 | if (*lmmp != NULL && lsm == NULL) { | |
73 | OBD_FREE(*lmmp, lmm_size); | |
74 | *lmmp = NULL; | |
0a3bdb00 | 75 | return 0; |
d7e09d03 | 76 | } else if (unlikely(lsm != NULL && ostid_id(&lsm->lsm_oi) == 0)) { |
0a3bdb00 | 77 | return -EBADF; |
d7e09d03 PT |
78 | } |
79 | ||
80 | if (*lmmp == NULL) { | |
81 | OBD_ALLOC(*lmmp, lmm_size); | |
82 | if (*lmmp == NULL) | |
0a3bdb00 | 83 | return -ENOMEM; |
d7e09d03 PT |
84 | } |
85 | ||
86 | if (lsm) | |
87 | ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi); | |
88 | ||
0a3bdb00 | 89 | return lmm_size; |
d7e09d03 PT |
90 | } |
91 | ||
92 | /* Unpack OSC object metadata from disk storage (LE byte order). */ | |
93 | static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, | |
94 | struct lov_mds_md *lmm, int lmm_bytes) | |
95 | { | |
96 | int lsm_size; | |
97 | struct obd_import *imp = class_exp2cliimp(exp); | |
d7e09d03 PT |
98 | |
99 | if (lmm != NULL) { | |
100 | if (lmm_bytes < sizeof(*lmm)) { | |
101 | CERROR("%s: lov_mds_md too small: %d, need %d\n", | |
102 | exp->exp_obd->obd_name, lmm_bytes, | |
103 | (int)sizeof(*lmm)); | |
0a3bdb00 | 104 | return -EINVAL; |
d7e09d03 PT |
105 | } |
106 | /* XXX LOV_MAGIC etc check? */ | |
107 | ||
108 | if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) { | |
109 | CERROR("%s: zero lmm_object_id: rc = %d\n", | |
110 | exp->exp_obd->obd_name, -EINVAL); | |
0a3bdb00 | 111 | return -EINVAL; |
d7e09d03 PT |
112 | } |
113 | } | |
114 | ||
115 | lsm_size = lov_stripe_md_size(1); | |
116 | if (lsmp == NULL) | |
0a3bdb00 | 117 | return lsm_size; |
d7e09d03 PT |
118 | |
119 | if (*lsmp != NULL && lmm == NULL) { | |
120 | OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo)); | |
121 | OBD_FREE(*lsmp, lsm_size); | |
122 | *lsmp = NULL; | |
0a3bdb00 | 123 | return 0; |
d7e09d03 PT |
124 | } |
125 | ||
126 | if (*lsmp == NULL) { | |
127 | OBD_ALLOC(*lsmp, lsm_size); | |
128 | if (unlikely(*lsmp == NULL)) | |
0a3bdb00 | 129 | return -ENOMEM; |
d7e09d03 PT |
130 | OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo)); |
131 | if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) { | |
132 | OBD_FREE(*lsmp, lsm_size); | |
0a3bdb00 | 133 | return -ENOMEM; |
d7e09d03 PT |
134 | } |
135 | loi_init((*lsmp)->lsm_oinfo[0]); | |
136 | } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) { | |
0a3bdb00 | 137 | return -EBADF; |
d7e09d03 PT |
138 | } |
139 | ||
140 | if (lmm != NULL) | |
141 | /* XXX zero *lsmp? */ | |
142 | ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi); | |
143 | ||
144 | if (imp != NULL && | |
145 | (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES)) | |
146 | (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes; | |
147 | else | |
148 | (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES; | |
149 | ||
0a3bdb00 | 150 | return lsm_size; |
d7e09d03 PT |
151 | } |
152 | ||
153 | static inline void osc_pack_capa(struct ptlrpc_request *req, | |
154 | struct ost_body *body, void *capa) | |
155 | { | |
156 | struct obd_capa *oc = (struct obd_capa *)capa; | |
157 | struct lustre_capa *c; | |
158 | ||
159 | if (!capa) | |
160 | return; | |
161 | ||
162 | c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1); | |
163 | LASSERT(c); | |
164 | capa_cpy(c, oc); | |
165 | body->oa.o_valid |= OBD_MD_FLOSSCAPA; | |
166 | DEBUG_CAPA(D_SEC, c, "pack"); | |
167 | } | |
168 | ||
169 | static inline void osc_pack_req_body(struct ptlrpc_request *req, | |
170 | struct obd_info *oinfo) | |
171 | { | |
172 | struct ost_body *body; | |
173 | ||
174 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
175 | LASSERT(body); | |
176 | ||
3b2f75fd | 177 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
178 | oinfo->oi_oa); | |
d7e09d03 PT |
179 | osc_pack_capa(req, body, oinfo->oi_capa); |
180 | } | |
181 | ||
182 | static inline void osc_set_capa_size(struct ptlrpc_request *req, | |
183 | const struct req_msg_field *field, | |
184 | struct obd_capa *oc) | |
185 | { | |
186 | if (oc == NULL) | |
187 | req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0); | |
188 | else | |
189 | /* it is already calculated as sizeof struct obd_capa */ | |
190 | ; | |
191 | } | |
192 | ||
193 | static int osc_getattr_interpret(const struct lu_env *env, | |
194 | struct ptlrpc_request *req, | |
195 | struct osc_async_args *aa, int rc) | |
196 | { | |
197 | struct ost_body *body; | |
d7e09d03 PT |
198 | |
199 | if (rc != 0) | |
200 | GOTO(out, rc); | |
201 | ||
202 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
203 | if (body) { | |
204 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 205 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
206 | aa->aa_oi->oi_oa, &body->oa); | |
d7e09d03 PT |
207 | |
208 | /* This should really be sent by the OST */ | |
209 | aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE; | |
210 | aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
211 | } else { | |
212 | CDEBUG(D_INFO, "can't unpack ost_body\n"); | |
213 | rc = -EPROTO; | |
214 | aa->aa_oi->oi_oa->o_valid = 0; | |
215 | } | |
216 | out: | |
217 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 218 | return rc; |
d7e09d03 PT |
219 | } |
220 | ||
221 | static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
222 | struct ptlrpc_request_set *set) | |
223 | { | |
224 | struct ptlrpc_request *req; | |
225 | struct osc_async_args *aa; | |
226 | int rc; | |
d7e09d03 PT |
227 | |
228 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
229 | if (req == NULL) | |
0a3bdb00 | 230 | return -ENOMEM; |
d7e09d03 PT |
231 | |
232 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
233 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); | |
234 | if (rc) { | |
235 | ptlrpc_request_free(req); | |
0a3bdb00 | 236 | return rc; |
d7e09d03 PT |
237 | } |
238 | ||
239 | osc_pack_req_body(req, oinfo); | |
240 | ||
241 | ptlrpc_request_set_replen(req); | |
242 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret; | |
243 | ||
244 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
245 | aa = ptlrpc_req_async_args(req); | |
246 | aa->aa_oi = oinfo; | |
247 | ||
248 | ptlrpc_set_add_req(set, req); | |
0a3bdb00 | 249 | return 0; |
d7e09d03 PT |
250 | } |
251 | ||
252 | static int osc_getattr(const struct lu_env *env, struct obd_export *exp, | |
253 | struct obd_info *oinfo) | |
254 | { | |
255 | struct ptlrpc_request *req; | |
256 | struct ost_body *body; | |
257 | int rc; | |
d7e09d03 PT |
258 | |
259 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR); | |
260 | if (req == NULL) | |
0a3bdb00 | 261 | return -ENOMEM; |
d7e09d03 PT |
262 | |
263 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
264 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR); | |
265 | if (rc) { | |
266 | ptlrpc_request_free(req); | |
0a3bdb00 | 267 | return rc; |
d7e09d03 PT |
268 | } |
269 | ||
270 | osc_pack_req_body(req, oinfo); | |
271 | ||
272 | ptlrpc_request_set_replen(req); | |
273 | ||
274 | rc = ptlrpc_queue_wait(req); | |
275 | if (rc) | |
276 | GOTO(out, rc); | |
277 | ||
278 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
279 | if (body == NULL) | |
280 | GOTO(out, rc = -EPROTO); | |
281 | ||
282 | CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode); | |
3b2f75fd | 283 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
284 | &body->oa); | |
d7e09d03 PT |
285 | |
286 | oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd); | |
287 | oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ; | |
288 | ||
d7e09d03 PT |
289 | out: |
290 | ptlrpc_req_finished(req); | |
291 | return rc; | |
292 | } | |
293 | ||
294 | static int osc_setattr(const struct lu_env *env, struct obd_export *exp, | |
295 | struct obd_info *oinfo, struct obd_trans_info *oti) | |
296 | { | |
297 | struct ptlrpc_request *req; | |
298 | struct ost_body *body; | |
299 | int rc; | |
d7e09d03 PT |
300 | |
301 | LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP); | |
302 | ||
303 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
304 | if (req == NULL) | |
0a3bdb00 | 305 | return -ENOMEM; |
d7e09d03 PT |
306 | |
307 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
308 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); | |
309 | if (rc) { | |
310 | ptlrpc_request_free(req); | |
0a3bdb00 | 311 | return rc; |
d7e09d03 PT |
312 | } |
313 | ||
314 | osc_pack_req_body(req, oinfo); | |
315 | ||
316 | ptlrpc_request_set_replen(req); | |
317 | ||
318 | rc = ptlrpc_queue_wait(req); | |
319 | if (rc) | |
320 | GOTO(out, rc); | |
321 | ||
322 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
323 | if (body == NULL) | |
324 | GOTO(out, rc = -EPROTO); | |
325 | ||
3b2f75fd | 326 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa, |
327 | &body->oa); | |
d7e09d03 | 328 | |
d7e09d03 PT |
329 | out: |
330 | ptlrpc_req_finished(req); | |
0a3bdb00 | 331 | return rc; |
d7e09d03 PT |
332 | } |
333 | ||
334 | static int osc_setattr_interpret(const struct lu_env *env, | |
335 | struct ptlrpc_request *req, | |
336 | struct osc_setattr_args *sa, int rc) | |
337 | { | |
338 | struct ost_body *body; | |
d7e09d03 PT |
339 | |
340 | if (rc != 0) | |
341 | GOTO(out, rc); | |
342 | ||
343 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
344 | if (body == NULL) | |
345 | GOTO(out, rc = -EPROTO); | |
346 | ||
3b2f75fd | 347 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa, |
348 | &body->oa); | |
d7e09d03 PT |
349 | out: |
350 | rc = sa->sa_upcall(sa->sa_cookie, rc); | |
0a3bdb00 | 351 | return rc; |
d7e09d03 PT |
352 | } |
353 | ||
354 | int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo, | |
355 | struct obd_trans_info *oti, | |
356 | obd_enqueue_update_f upcall, void *cookie, | |
357 | struct ptlrpc_request_set *rqset) | |
358 | { | |
359 | struct ptlrpc_request *req; | |
360 | struct osc_setattr_args *sa; | |
361 | int rc; | |
d7e09d03 PT |
362 | |
363 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR); | |
364 | if (req == NULL) | |
0a3bdb00 | 365 | return -ENOMEM; |
d7e09d03 PT |
366 | |
367 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
368 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR); | |
369 | if (rc) { | |
370 | ptlrpc_request_free(req); | |
0a3bdb00 | 371 | return rc; |
d7e09d03 PT |
372 | } |
373 | ||
374 | if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) | |
375 | oinfo->oi_oa->o_lcookie = *oti->oti_logcookies; | |
376 | ||
377 | osc_pack_req_body(req, oinfo); | |
378 | ||
379 | ptlrpc_request_set_replen(req); | |
380 | ||
381 | /* do mds to ost setattr asynchronously */ | |
382 | if (!rqset) { | |
383 | /* Do not wait for response. */ | |
384 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
385 | } else { | |
386 | req->rq_interpret_reply = | |
387 | (ptlrpc_interpterer_t)osc_setattr_interpret; | |
388 | ||
389 | CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args)); | |
390 | sa = ptlrpc_req_async_args(req); | |
391 | sa->sa_oa = oinfo->oi_oa; | |
392 | sa->sa_upcall = upcall; | |
393 | sa->sa_cookie = cookie; | |
394 | ||
395 | if (rqset == PTLRPCD_SET) | |
396 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
397 | else | |
398 | ptlrpc_set_add_req(rqset, req); | |
399 | } | |
400 | ||
0a3bdb00 | 401 | return 0; |
d7e09d03 PT |
402 | } |
403 | ||
404 | static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
405 | struct obd_trans_info *oti, | |
406 | struct ptlrpc_request_set *rqset) | |
407 | { | |
408 | return osc_setattr_async_base(exp, oinfo, oti, | |
409 | oinfo->oi_cb_up, oinfo, rqset); | |
410 | } | |
411 | ||
412 | int osc_real_create(struct obd_export *exp, struct obdo *oa, | |
413 | struct lov_stripe_md **ea, struct obd_trans_info *oti) | |
414 | { | |
415 | struct ptlrpc_request *req; | |
416 | struct ost_body *body; | |
417 | struct lov_stripe_md *lsm; | |
418 | int rc; | |
d7e09d03 PT |
419 | |
420 | LASSERT(oa); | |
421 | LASSERT(ea); | |
422 | ||
423 | lsm = *ea; | |
424 | if (!lsm) { | |
425 | rc = obd_alloc_memmd(exp, &lsm); | |
426 | if (rc < 0) | |
0a3bdb00 | 427 | return rc; |
d7e09d03 PT |
428 | } |
429 | ||
430 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE); | |
431 | if (req == NULL) | |
432 | GOTO(out, rc = -ENOMEM); | |
433 | ||
434 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE); | |
435 | if (rc) { | |
436 | ptlrpc_request_free(req); | |
437 | GOTO(out, rc); | |
438 | } | |
439 | ||
440 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
441 | LASSERT(body); | |
3b2f75fd | 442 | |
443 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); | |
d7e09d03 PT |
444 | |
445 | ptlrpc_request_set_replen(req); | |
446 | ||
447 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
448 | oa->o_flags == OBD_FL_DELORPHAN) { | |
449 | DEBUG_REQ(D_HA, req, | |
450 | "delorphan from OST integration"); | |
451 | /* Don't resend the delorphan req */ | |
452 | req->rq_no_resend = req->rq_no_delay = 1; | |
453 | } | |
454 | ||
455 | rc = ptlrpc_queue_wait(req); | |
456 | if (rc) | |
457 | GOTO(out_req, rc); | |
458 | ||
459 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
460 | if (body == NULL) | |
461 | GOTO(out_req, rc = -EPROTO); | |
462 | ||
3b2f75fd | 463 | CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags); |
464 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa); | |
d7e09d03 PT |
465 | |
466 | oa->o_blksize = cli_brw_size(exp->exp_obd); | |
467 | oa->o_valid |= OBD_MD_FLBLKSZ; | |
468 | ||
469 | /* XXX LOV STACKING: the lsm that is passed to us from LOV does not | |
470 | * have valid lsm_oinfo data structs, so don't go touching that. | |
471 | * This needs to be fixed in a big way. | |
472 | */ | |
473 | lsm->lsm_oi = oa->o_oi; | |
474 | *ea = lsm; | |
475 | ||
476 | if (oti != NULL) { | |
477 | oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg); | |
478 | ||
479 | if (oa->o_valid & OBD_MD_FLCOOKIE) { | |
480 | if (!oti->oti_logcookies) | |
481 | oti_alloc_cookies(oti, 1); | |
482 | *oti->oti_logcookies = oa->o_lcookie; | |
483 | } | |
484 | } | |
485 | ||
486 | CDEBUG(D_HA, "transno: "LPD64"\n", | |
487 | lustre_msg_get_transno(req->rq_repmsg)); | |
488 | out_req: | |
489 | ptlrpc_req_finished(req); | |
490 | out: | |
491 | if (rc && !*ea) | |
492 | obd_free_memmd(exp, &lsm); | |
0a3bdb00 | 493 | return rc; |
d7e09d03 PT |
494 | } |
495 | ||
496 | int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo, | |
497 | obd_enqueue_update_f upcall, void *cookie, | |
498 | struct ptlrpc_request_set *rqset) | |
499 | { | |
500 | struct ptlrpc_request *req; | |
501 | struct osc_setattr_args *sa; | |
502 | struct ost_body *body; | |
503 | int rc; | |
d7e09d03 PT |
504 | |
505 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH); | |
506 | if (req == NULL) | |
0a3bdb00 | 507 | return -ENOMEM; |
d7e09d03 PT |
508 | |
509 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
510 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH); | |
511 | if (rc) { | |
512 | ptlrpc_request_free(req); | |
0a3bdb00 | 513 | return rc; |
d7e09d03 PT |
514 | } |
515 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
516 | ptlrpc_at_set_req_timeout(req); | |
517 | ||
518 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
519 | LASSERT(body); | |
3b2f75fd | 520 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
521 | oinfo->oi_oa); | |
d7e09d03 PT |
522 | osc_pack_capa(req, body, oinfo->oi_capa); |
523 | ||
524 | ptlrpc_request_set_replen(req); | |
525 | ||
526 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret; | |
527 | CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args)); | |
528 | sa = ptlrpc_req_async_args(req); | |
529 | sa->sa_oa = oinfo->oi_oa; | |
530 | sa->sa_upcall = upcall; | |
531 | sa->sa_cookie = cookie; | |
532 | if (rqset == PTLRPCD_SET) | |
533 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
534 | else | |
535 | ptlrpc_set_add_req(rqset, req); | |
536 | ||
0a3bdb00 | 537 | return 0; |
d7e09d03 PT |
538 | } |
539 | ||
540 | static int osc_punch(const struct lu_env *env, struct obd_export *exp, | |
541 | struct obd_info *oinfo, struct obd_trans_info *oti, | |
542 | struct ptlrpc_request_set *rqset) | |
543 | { | |
544 | oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start; | |
545 | oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end; | |
546 | oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS; | |
547 | return osc_punch_base(exp, oinfo, | |
548 | oinfo->oi_cb_up, oinfo, rqset); | |
549 | } | |
550 | ||
551 | static int osc_sync_interpret(const struct lu_env *env, | |
552 | struct ptlrpc_request *req, | |
553 | void *arg, int rc) | |
554 | { | |
555 | struct osc_fsync_args *fa = arg; | |
556 | struct ost_body *body; | |
d7e09d03 PT |
557 | |
558 | if (rc) | |
559 | GOTO(out, rc); | |
560 | ||
561 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
562 | if (body == NULL) { | |
563 | CERROR ("can't unpack ost_body\n"); | |
564 | GOTO(out, rc = -EPROTO); | |
565 | } | |
566 | ||
567 | *fa->fa_oi->oi_oa = body->oa; | |
568 | out: | |
569 | rc = fa->fa_upcall(fa->fa_cookie, rc); | |
0a3bdb00 | 570 | return rc; |
d7e09d03 PT |
571 | } |
572 | ||
573 | int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo, | |
574 | obd_enqueue_update_f upcall, void *cookie, | |
575 | struct ptlrpc_request_set *rqset) | |
576 | { | |
577 | struct ptlrpc_request *req; | |
578 | struct ost_body *body; | |
579 | struct osc_fsync_args *fa; | |
580 | int rc; | |
d7e09d03 PT |
581 | |
582 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC); | |
583 | if (req == NULL) | |
0a3bdb00 | 584 | return -ENOMEM; |
d7e09d03 PT |
585 | |
586 | osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa); | |
587 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC); | |
588 | if (rc) { | |
589 | ptlrpc_request_free(req); | |
0a3bdb00 | 590 | return rc; |
d7e09d03 PT |
591 | } |
592 | ||
593 | /* overload the size and blocks fields in the oa with start/end */ | |
594 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
595 | LASSERT(body); | |
3b2f75fd | 596 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, |
597 | oinfo->oi_oa); | |
d7e09d03 PT |
598 | osc_pack_capa(req, body, oinfo->oi_capa); |
599 | ||
600 | ptlrpc_request_set_replen(req); | |
601 | req->rq_interpret_reply = osc_sync_interpret; | |
602 | ||
603 | CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args)); | |
604 | fa = ptlrpc_req_async_args(req); | |
605 | fa->fa_oi = oinfo; | |
606 | fa->fa_upcall = upcall; | |
607 | fa->fa_cookie = cookie; | |
608 | ||
609 | if (rqset == PTLRPCD_SET) | |
610 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
611 | else | |
612 | ptlrpc_set_add_req(rqset, req); | |
613 | ||
0a3bdb00 | 614 | return 0; |
d7e09d03 PT |
615 | } |
616 | ||
617 | static int osc_sync(const struct lu_env *env, struct obd_export *exp, | |
618 | struct obd_info *oinfo, obd_size start, obd_size end, | |
619 | struct ptlrpc_request_set *set) | |
620 | { | |
d7e09d03 PT |
621 | if (!oinfo->oi_oa) { |
622 | CDEBUG(D_INFO, "oa NULL\n"); | |
0a3bdb00 | 623 | return -EINVAL; |
d7e09d03 PT |
624 | } |
625 | ||
626 | oinfo->oi_oa->o_size = start; | |
627 | oinfo->oi_oa->o_blocks = end; | |
628 | oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS); | |
629 | ||
0a3bdb00 | 630 | return osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set); |
d7e09d03 PT |
631 | } |
632 | ||
633 | /* Find and cancel locally locks matched by @mode in the resource found by | |
634 | * @objid. Found locks are added into @cancel list. Returns the amount of | |
635 | * locks added to @cancels list. */ | |
636 | static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa, | |
637 | struct list_head *cancels, | |
875332d4 | 638 | ldlm_mode_t mode, __u64 lock_flags) |
d7e09d03 PT |
639 | { |
640 | struct ldlm_namespace *ns = exp->exp_obd->obd_namespace; | |
641 | struct ldlm_res_id res_id; | |
642 | struct ldlm_resource *res; | |
643 | int count; | |
d7e09d03 PT |
644 | |
645 | /* Return, i.e. cancel nothing, only if ELC is supported (flag in | |
646 | * export) but disabled through procfs (flag in NS). | |
647 | * | |
648 | * This distinguishes from a case when ELC is not supported originally, | |
649 | * when we still want to cancel locks in advance and just cancel them | |
650 | * locally, without sending any RPC. */ | |
651 | if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns)) | |
0a3bdb00 | 652 | return 0; |
d7e09d03 PT |
653 | |
654 | ostid_build_res_name(&oa->o_oi, &res_id); | |
655 | res = ldlm_resource_get(ns, NULL, &res_id, 0, 0); | |
656 | if (res == NULL) | |
0a3bdb00 | 657 | return 0; |
d7e09d03 PT |
658 | |
659 | LDLM_RESOURCE_ADDREF(res); | |
660 | count = ldlm_cancel_resource_local(res, cancels, NULL, mode, | |
661 | lock_flags, 0, NULL); | |
662 | LDLM_RESOURCE_DELREF(res); | |
663 | ldlm_resource_putref(res); | |
0a3bdb00 | 664 | return count; |
d7e09d03 PT |
665 | } |
666 | ||
667 | static int osc_destroy_interpret(const struct lu_env *env, | |
668 | struct ptlrpc_request *req, void *data, | |
669 | int rc) | |
670 | { | |
671 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
672 | ||
673 | atomic_dec(&cli->cl_destroy_in_flight); | |
674 | wake_up(&cli->cl_destroy_waitq); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static int osc_can_send_destroy(struct client_obd *cli) | |
679 | { | |
680 | if (atomic_inc_return(&cli->cl_destroy_in_flight) <= | |
681 | cli->cl_max_rpcs_in_flight) { | |
682 | /* The destroy request can be sent */ | |
683 | return 1; | |
684 | } | |
685 | if (atomic_dec_return(&cli->cl_destroy_in_flight) < | |
686 | cli->cl_max_rpcs_in_flight) { | |
687 | /* | |
688 | * The counter has been modified between the two atomic | |
689 | * operations. | |
690 | */ | |
691 | wake_up(&cli->cl_destroy_waitq); | |
692 | } | |
693 | return 0; | |
694 | } | |
695 | ||
696 | int osc_create(const struct lu_env *env, struct obd_export *exp, | |
697 | struct obdo *oa, struct lov_stripe_md **ea, | |
698 | struct obd_trans_info *oti) | |
699 | { | |
700 | int rc = 0; | |
d7e09d03 PT |
701 | |
702 | LASSERT(oa); | |
703 | LASSERT(ea); | |
704 | LASSERT(oa->o_valid & OBD_MD_FLGROUP); | |
705 | ||
706 | if ((oa->o_valid & OBD_MD_FLFLAGS) && | |
707 | oa->o_flags == OBD_FL_RECREATE_OBJS) { | |
0a3bdb00 | 708 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
709 | } |
710 | ||
711 | if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi))) | |
0a3bdb00 | 712 | return osc_real_create(exp, oa, ea, oti); |
d7e09d03 PT |
713 | |
714 | /* we should not get here anymore */ | |
715 | LBUG(); | |
716 | ||
0a3bdb00 | 717 | return rc; |
d7e09d03 PT |
718 | } |
719 | ||
720 | /* Destroy requests can be async always on the client, and we don't even really | |
721 | * care about the return code since the client cannot do anything at all about | |
722 | * a destroy failure. | |
723 | * When the MDS is unlinking a filename, it saves the file objects into a | |
724 | * recovery llog, and these object records are cancelled when the OST reports | |
725 | * they were destroyed and sync'd to disk (i.e. transaction committed). | |
726 | * If the client dies, or the OST is down when the object should be destroyed, | |
727 | * the records are not cancelled, and when the OST reconnects to the MDS next, | |
728 | * it will retrieve the llog unlink logs and then sends the log cancellation | |
729 | * cookies to the MDS after committing destroy transactions. */ | |
730 | static int osc_destroy(const struct lu_env *env, struct obd_export *exp, | |
731 | struct obdo *oa, struct lov_stripe_md *ea, | |
732 | struct obd_trans_info *oti, struct obd_export *md_export, | |
733 | void *capa) | |
734 | { | |
735 | struct client_obd *cli = &exp->exp_obd->u.cli; | |
736 | struct ptlrpc_request *req; | |
737 | struct ost_body *body; | |
738 | LIST_HEAD(cancels); | |
739 | int rc, count; | |
d7e09d03 PT |
740 | |
741 | if (!oa) { | |
742 | CDEBUG(D_INFO, "oa NULL\n"); | |
0a3bdb00 | 743 | return -EINVAL; |
d7e09d03 PT |
744 | } |
745 | ||
746 | count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW, | |
747 | LDLM_FL_DISCARD_DATA); | |
748 | ||
749 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY); | |
750 | if (req == NULL) { | |
751 | ldlm_lock_list_put(&cancels, l_bl_ast, count); | |
0a3bdb00 | 752 | return -ENOMEM; |
d7e09d03 PT |
753 | } |
754 | ||
755 | osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa); | |
756 | rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY, | |
757 | 0, &cancels, count); | |
758 | if (rc) { | |
759 | ptlrpc_request_free(req); | |
0a3bdb00 | 760 | return rc; |
d7e09d03 PT |
761 | } |
762 | ||
763 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
764 | ptlrpc_at_set_req_timeout(req); | |
765 | ||
766 | if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE) | |
767 | oa->o_lcookie = *oti->oti_logcookies; | |
768 | body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); | |
769 | LASSERT(body); | |
3b2f75fd | 770 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 PT |
771 | |
772 | osc_pack_capa(req, body, (struct obd_capa *)capa); | |
773 | ptlrpc_request_set_replen(req); | |
774 | ||
11d66e89 | 775 | /* If osc_destroy is for destroying the unlink orphan, |
d7e09d03 PT |
776 | * sent from MDT to OST, which should not be blocked here, |
777 | * because the process might be triggered by ptlrpcd, and | |
778 | * it is not good to block ptlrpcd thread (b=16006)*/ | |
779 | if (!(oa->o_flags & OBD_FL_DELORPHAN)) { | |
780 | req->rq_interpret_reply = osc_destroy_interpret; | |
781 | if (!osc_can_send_destroy(cli)) { | |
782 | struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, | |
783 | NULL); | |
784 | ||
785 | /* | |
786 | * Wait until the number of on-going destroy RPCs drops | |
787 | * under max_rpc_in_flight | |
788 | */ | |
789 | l_wait_event_exclusive(cli->cl_destroy_waitq, | |
790 | osc_can_send_destroy(cli), &lwi); | |
791 | } | |
792 | } | |
793 | ||
794 | /* Do not wait for response */ | |
795 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
0a3bdb00 | 796 | return 0; |
d7e09d03 PT |
797 | } |
798 | ||
799 | static void osc_announce_cached(struct client_obd *cli, struct obdo *oa, | |
800 | long writing_bytes) | |
801 | { | |
802 | obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT; | |
803 | ||
804 | LASSERT(!(oa->o_valid & bits)); | |
805 | ||
806 | oa->o_valid |= bits; | |
807 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
808 | oa->o_dirty = cli->cl_dirty; | |
809 | if (unlikely(cli->cl_dirty - cli->cl_dirty_transit > | |
810 | cli->cl_dirty_max)) { | |
811 | CERROR("dirty %lu - %lu > dirty_max %lu\n", | |
812 | cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max); | |
813 | oa->o_undirty = 0; | |
c52f69c5 | 814 | } else if (unlikely(atomic_read(&obd_dirty_pages) - |
d7e09d03 PT |
815 | atomic_read(&obd_dirty_transit_pages) > |
816 | (long)(obd_max_dirty_pages + 1))) { | |
817 | /* The atomic_read() allowing the atomic_inc() are | |
818 | * not covered by a lock thus they may safely race and trip | |
819 | * this CERROR() unless we add in a small fudge factor (+1). */ | |
c52f69c5 | 820 | CERROR("dirty %d - %d > system dirty_max %d\n", |
d7e09d03 PT |
821 | atomic_read(&obd_dirty_pages), |
822 | atomic_read(&obd_dirty_transit_pages), | |
823 | obd_max_dirty_pages); | |
824 | oa->o_undirty = 0; | |
825 | } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) { | |
826 | CERROR("dirty %lu - dirty_max %lu too big???\n", | |
827 | cli->cl_dirty, cli->cl_dirty_max); | |
828 | oa->o_undirty = 0; | |
829 | } else { | |
830 | long max_in_flight = (cli->cl_max_pages_per_rpc << | |
831 | PAGE_CACHE_SHIFT)* | |
832 | (cli->cl_max_rpcs_in_flight + 1); | |
833 | oa->o_undirty = max(cli->cl_dirty_max, max_in_flight); | |
834 | } | |
835 | oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant; | |
836 | oa->o_dropped = cli->cl_lost_grant; | |
837 | cli->cl_lost_grant = 0; | |
838 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
839 | CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n", | |
840 | oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant); | |
841 | ||
842 | } | |
843 | ||
844 | void osc_update_next_shrink(struct client_obd *cli) | |
845 | { | |
846 | cli->cl_next_shrink_grant = | |
847 | cfs_time_shift(cli->cl_grant_shrink_interval); | |
848 | CDEBUG(D_CACHE, "next time %ld to shrink grant \n", | |
849 | cli->cl_next_shrink_grant); | |
850 | } | |
851 | ||
852 | static void __osc_update_grant(struct client_obd *cli, obd_size grant) | |
853 | { | |
854 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
855 | cli->cl_avail_grant += grant; | |
856 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
857 | } | |
858 | ||
859 | static void osc_update_grant(struct client_obd *cli, struct ost_body *body) | |
860 | { | |
861 | if (body->oa.o_valid & OBD_MD_FLGRANT) { | |
862 | CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant); | |
863 | __osc_update_grant(cli, body->oa.o_grant); | |
864 | } | |
865 | } | |
866 | ||
867 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
868 | obd_count keylen, void *key, obd_count vallen, | |
869 | void *val, struct ptlrpc_request_set *set); | |
870 | ||
871 | static int osc_shrink_grant_interpret(const struct lu_env *env, | |
872 | struct ptlrpc_request *req, | |
873 | void *aa, int rc) | |
874 | { | |
875 | struct client_obd *cli = &req->rq_import->imp_obd->u.cli; | |
876 | struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa; | |
877 | struct ost_body *body; | |
878 | ||
879 | if (rc != 0) { | |
880 | __osc_update_grant(cli, oa->o_grant); | |
881 | GOTO(out, rc); | |
882 | } | |
883 | ||
884 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
885 | LASSERT(body); | |
886 | osc_update_grant(cli, body); | |
887 | out: | |
888 | OBDO_FREE(oa); | |
889 | return rc; | |
890 | } | |
891 | ||
892 | static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa) | |
893 | { | |
894 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
895 | oa->o_grant = cli->cl_avail_grant / 4; | |
896 | cli->cl_avail_grant -= oa->o_grant; | |
897 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
898 | if (!(oa->o_valid & OBD_MD_FLFLAGS)) { | |
899 | oa->o_valid |= OBD_MD_FLFLAGS; | |
900 | oa->o_flags = 0; | |
901 | } | |
902 | oa->o_flags |= OBD_FL_SHRINK_GRANT; | |
903 | osc_update_next_shrink(cli); | |
904 | } | |
905 | ||
906 | /* Shrink the current grant, either from some large amount to enough for a | |
907 | * full set of in-flight RPCs, or if we have already shrunk to that limit | |
908 | * then to enough for a single RPC. This avoids keeping more grant than | |
909 | * needed, and avoids shrinking the grant piecemeal. */ | |
910 | static int osc_shrink_grant(struct client_obd *cli) | |
911 | { | |
912 | __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) * | |
913 | (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT); | |
914 | ||
915 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
916 | if (cli->cl_avail_grant <= target_bytes) | |
917 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
918 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
919 | ||
920 | return osc_shrink_grant_to_target(cli, target_bytes); | |
921 | } | |
922 | ||
923 | int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes) | |
924 | { | |
925 | int rc = 0; | |
926 | struct ost_body *body; | |
d7e09d03 PT |
927 | |
928 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
929 | /* Don't shrink if we are already above or below the desired limit | |
930 | * We don't want to shrink below a single RPC, as that will negatively | |
931 | * impact block allocation and long-term performance. */ | |
932 | if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT) | |
933 | target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
934 | ||
935 | if (target_bytes >= cli->cl_avail_grant) { | |
936 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
0a3bdb00 | 937 | return 0; |
d7e09d03 PT |
938 | } |
939 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
940 | ||
941 | OBD_ALLOC_PTR(body); | |
942 | if (!body) | |
0a3bdb00 | 943 | return -ENOMEM; |
d7e09d03 PT |
944 | |
945 | osc_announce_cached(cli, &body->oa, 0); | |
946 | ||
947 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
948 | body->oa.o_grant = cli->cl_avail_grant - target_bytes; | |
949 | cli->cl_avail_grant = target_bytes; | |
950 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
951 | if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) { | |
952 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
953 | body->oa.o_flags = 0; | |
954 | } | |
955 | body->oa.o_flags |= OBD_FL_SHRINK_GRANT; | |
956 | osc_update_next_shrink(cli); | |
957 | ||
958 | rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export, | |
959 | sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK, | |
960 | sizeof(*body), body, NULL); | |
961 | if (rc != 0) | |
962 | __osc_update_grant(cli, body->oa.o_grant); | |
963 | OBD_FREE_PTR(body); | |
0a3bdb00 | 964 | return rc; |
d7e09d03 PT |
965 | } |
966 | ||
967 | static int osc_should_shrink_grant(struct client_obd *client) | |
968 | { | |
969 | cfs_time_t time = cfs_time_current(); | |
970 | cfs_time_t next_shrink = client->cl_next_shrink_grant; | |
971 | ||
972 | if ((client->cl_import->imp_connect_data.ocd_connect_flags & | |
973 | OBD_CONNECT_GRANT_SHRINK) == 0) | |
974 | return 0; | |
975 | ||
976 | if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) { | |
977 | /* Get the current RPC size directly, instead of going via: | |
978 | * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export) | |
979 | * Keep comment here so that it can be found by searching. */ | |
980 | int brw_size = client->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; | |
981 | ||
982 | if (client->cl_import->imp_state == LUSTRE_IMP_FULL && | |
983 | client->cl_avail_grant > brw_size) | |
984 | return 1; | |
985 | else | |
986 | osc_update_next_shrink(client); | |
987 | } | |
988 | return 0; | |
989 | } | |
990 | ||
991 | static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data) | |
992 | { | |
993 | struct client_obd *client; | |
994 | ||
995 | list_for_each_entry(client, &item->ti_obd_list, | |
996 | cl_grant_shrink_list) { | |
997 | if (osc_should_shrink_grant(client)) | |
998 | osc_shrink_grant(client); | |
999 | } | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | static int osc_add_shrink_grant(struct client_obd *client) | |
1004 | { | |
1005 | int rc; | |
1006 | ||
1007 | rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval, | |
1008 | TIMEOUT_GRANT, | |
1009 | osc_grant_shrink_grant_cb, NULL, | |
1010 | &client->cl_grant_shrink_list); | |
1011 | if (rc) { | |
1012 | CERROR("add grant client %s error %d\n", | |
1013 | client->cl_import->imp_obd->obd_name, rc); | |
1014 | return rc; | |
1015 | } | |
1016 | CDEBUG(D_CACHE, "add grant client %s \n", | |
1017 | client->cl_import->imp_obd->obd_name); | |
1018 | osc_update_next_shrink(client); | |
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | static int osc_del_shrink_grant(struct client_obd *client) | |
1023 | { | |
1024 | return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list, | |
1025 | TIMEOUT_GRANT); | |
1026 | } | |
1027 | ||
1028 | static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd) | |
1029 | { | |
1030 | /* | |
1031 | * ocd_grant is the total grant amount we're expect to hold: if we've | |
1032 | * been evicted, it's the new avail_grant amount, cl_dirty will drop | |
1033 | * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty. | |
1034 | * | |
1035 | * race is tolerable here: if we're evicted, but imp_state already | |
1036 | * left EVICTED state, then cl_dirty must be 0 already. | |
1037 | */ | |
1038 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
1039 | if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED) | |
1040 | cli->cl_avail_grant = ocd->ocd_grant; | |
1041 | else | |
1042 | cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty; | |
1043 | ||
1044 | if (cli->cl_avail_grant < 0) { | |
1045 | CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n", | |
1046 | cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant, | |
1047 | ocd->ocd_grant, cli->cl_dirty); | |
1048 | /* workaround for servers which do not have the patch from | |
1049 | * LU-2679 */ | |
1050 | cli->cl_avail_grant = ocd->ocd_grant; | |
1051 | } | |
1052 | ||
1053 | /* determine the appropriate chunk size used by osc_extent. */ | |
1054 | cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize); | |
1055 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
1056 | ||
1057 | CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld." | |
1058 | "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name, | |
1059 | cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits); | |
1060 | ||
1061 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK && | |
1062 | list_empty(&cli->cl_grant_shrink_list)) | |
1063 | osc_add_shrink_grant(cli); | |
1064 | } | |
1065 | ||
1066 | /* We assume that the reason this OSC got a short read is because it read | |
1067 | * beyond the end of a stripe file; i.e. lustre is reading a sparse file | |
1068 | * via the LOV, and it _knows_ it's reading inside the file, it's just that | |
1069 | * this stripe never got written at or beyond this stripe offset yet. */ | |
1070 | static void handle_short_read(int nob_read, obd_count page_count, | |
1071 | struct brw_page **pga) | |
1072 | { | |
1073 | char *ptr; | |
1074 | int i = 0; | |
1075 | ||
1076 | /* skip bytes read OK */ | |
1077 | while (nob_read > 0) { | |
1078 | LASSERT (page_count > 0); | |
1079 | ||
1080 | if (pga[i]->count > nob_read) { | |
1081 | /* EOF inside this page */ | |
1082 | ptr = kmap(pga[i]->pg) + | |
1083 | (pga[i]->off & ~CFS_PAGE_MASK); | |
1084 | memset(ptr + nob_read, 0, pga[i]->count - nob_read); | |
1085 | kunmap(pga[i]->pg); | |
1086 | page_count--; | |
1087 | i++; | |
1088 | break; | |
1089 | } | |
1090 | ||
1091 | nob_read -= pga[i]->count; | |
1092 | page_count--; | |
1093 | i++; | |
1094 | } | |
1095 | ||
1096 | /* zero remaining pages */ | |
1097 | while (page_count-- > 0) { | |
1098 | ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK); | |
1099 | memset(ptr, 0, pga[i]->count); | |
1100 | kunmap(pga[i]->pg); | |
1101 | i++; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | static int check_write_rcs(struct ptlrpc_request *req, | |
1106 | int requested_nob, int niocount, | |
1107 | obd_count page_count, struct brw_page **pga) | |
1108 | { | |
1109 | int i; | |
1110 | __u32 *remote_rcs; | |
1111 | ||
1112 | remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS, | |
1113 | sizeof(*remote_rcs) * | |
1114 | niocount); | |
1115 | if (remote_rcs == NULL) { | |
1116 | CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n"); | |
1117 | return(-EPROTO); | |
1118 | } | |
1119 | ||
1120 | /* return error if any niobuf was in error */ | |
1121 | for (i = 0; i < niocount; i++) { | |
1122 | if ((int)remote_rcs[i] < 0) | |
1123 | return(remote_rcs[i]); | |
1124 | ||
1125 | if (remote_rcs[i] != 0) { | |
1126 | CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n", | |
1127 | i, remote_rcs[i], req); | |
1128 | return(-EPROTO); | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | if (req->rq_bulk->bd_nob_transferred != requested_nob) { | |
1133 | CERROR("Unexpected # bytes transferred: %d (requested %d)\n", | |
1134 | req->rq_bulk->bd_nob_transferred, requested_nob); | |
1135 | return(-EPROTO); | |
1136 | } | |
1137 | ||
1138 | return (0); | |
1139 | } | |
1140 | ||
1141 | static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2) | |
1142 | { | |
1143 | if (p1->flag != p2->flag) { | |
1144 | unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE| | |
1145 | OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA); | |
1146 | ||
1147 | /* warn if we try to combine flags that we don't know to be | |
1148 | * safe to combine */ | |
1149 | if (unlikely((p1->flag & mask) != (p2->flag & mask))) { | |
1150 | CWARN("Saw flags 0x%x and 0x%x in the same brw, please " | |
1151 | "report this at http://bugs.whamcloud.com/\n", | |
1152 | p1->flag, p2->flag); | |
1153 | } | |
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | return (p1->off + p1->count == p2->off); | |
1158 | } | |
1159 | ||
1160 | static obd_count osc_checksum_bulk(int nob, obd_count pg_count, | |
1161 | struct brw_page **pga, int opc, | |
1162 | cksum_type_t cksum_type) | |
1163 | { | |
1164 | __u32 cksum; | |
1165 | int i = 0; | |
1166 | struct cfs_crypto_hash_desc *hdesc; | |
1167 | unsigned int bufsize; | |
1168 | int err; | |
1169 | unsigned char cfs_alg = cksum_obd2cfs(cksum_type); | |
1170 | ||
1171 | LASSERT(pg_count > 0); | |
1172 | ||
1173 | hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0); | |
1174 | if (IS_ERR(hdesc)) { | |
1175 | CERROR("Unable to initialize checksum hash %s\n", | |
1176 | cfs_crypto_hash_name(cfs_alg)); | |
1177 | return PTR_ERR(hdesc); | |
1178 | } | |
1179 | ||
1180 | while (nob > 0 && pg_count > 0) { | |
1181 | int count = pga[i]->count > nob ? nob : pga[i]->count; | |
1182 | ||
1183 | /* corrupt the data before we compute the checksum, to | |
1184 | * simulate an OST->client data error */ | |
1185 | if (i == 0 && opc == OST_READ && | |
1186 | OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) { | |
1187 | unsigned char *ptr = kmap(pga[i]->pg); | |
1188 | int off = pga[i]->off & ~CFS_PAGE_MASK; | |
1189 | memcpy(ptr + off, "bad1", min(4, nob)); | |
1190 | kunmap(pga[i]->pg); | |
1191 | } | |
1192 | cfs_crypto_hash_update_page(hdesc, pga[i]->pg, | |
1193 | pga[i]->off & ~CFS_PAGE_MASK, | |
1194 | count); | |
aa3bee0d GKH |
1195 | CDEBUG(D_PAGE, |
1196 | "page %p map %p index %lu flags %lx count %u priv %0lx: off %d\n", | |
1197 | pga[i]->pg, pga[i]->pg->mapping, pga[i]->pg->index, | |
1198 | (long)pga[i]->pg->flags, page_count(pga[i]->pg), | |
1199 | page_private(pga[i]->pg), | |
1200 | (int)(pga[i]->off & ~CFS_PAGE_MASK)); | |
d7e09d03 PT |
1201 | |
1202 | nob -= pga[i]->count; | |
1203 | pg_count--; | |
1204 | i++; | |
1205 | } | |
1206 | ||
1207 | bufsize = 4; | |
1208 | err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize); | |
1209 | ||
1210 | if (err) | |
1211 | cfs_crypto_hash_final(hdesc, NULL, NULL); | |
1212 | ||
1213 | /* For sending we only compute the wrong checksum instead | |
1214 | * of corrupting the data so it is still correct on a redo */ | |
1215 | if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND)) | |
1216 | cksum++; | |
1217 | ||
1218 | return cksum; | |
1219 | } | |
1220 | ||
1221 | static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa, | |
1222 | struct lov_stripe_md *lsm, obd_count page_count, | |
1223 | struct brw_page **pga, | |
1224 | struct ptlrpc_request **reqp, | |
1225 | struct obd_capa *ocapa, int reserve, | |
1226 | int resend) | |
1227 | { | |
1228 | struct ptlrpc_request *req; | |
1229 | struct ptlrpc_bulk_desc *desc; | |
1230 | struct ost_body *body; | |
1231 | struct obd_ioobj *ioobj; | |
1232 | struct niobuf_remote *niobuf; | |
1233 | int niocount, i, requested_nob, opc, rc; | |
1234 | struct osc_brw_async_args *aa; | |
1235 | struct req_capsule *pill; | |
1236 | struct brw_page *pg_prev; | |
1237 | ||
d7e09d03 | 1238 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ)) |
0a3bdb00 | 1239 | return -ENOMEM; /* Recoverable */ |
d7e09d03 | 1240 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2)) |
0a3bdb00 | 1241 | return -EINVAL; /* Fatal */ |
d7e09d03 PT |
1242 | |
1243 | if ((cmd & OBD_BRW_WRITE) != 0) { | |
1244 | opc = OST_WRITE; | |
1245 | req = ptlrpc_request_alloc_pool(cli->cl_import, | |
1246 | cli->cl_import->imp_rq_pool, | |
1247 | &RQF_OST_BRW_WRITE); | |
1248 | } else { | |
1249 | opc = OST_READ; | |
1250 | req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ); | |
1251 | } | |
1252 | if (req == NULL) | |
0a3bdb00 | 1253 | return -ENOMEM; |
d7e09d03 PT |
1254 | |
1255 | for (niocount = i = 1; i < page_count; i++) { | |
1256 | if (!can_merge_pages(pga[i - 1], pga[i])) | |
1257 | niocount++; | |
1258 | } | |
1259 | ||
1260 | pill = &req->rq_pill; | |
1261 | req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT, | |
1262 | sizeof(*ioobj)); | |
1263 | req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT, | |
1264 | niocount * sizeof(*niobuf)); | |
1265 | osc_set_capa_size(req, &RMF_CAPA1, ocapa); | |
1266 | ||
1267 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc); | |
1268 | if (rc) { | |
1269 | ptlrpc_request_free(req); | |
0a3bdb00 | 1270 | return rc; |
d7e09d03 PT |
1271 | } |
1272 | req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */ | |
1273 | ptlrpc_at_set_req_timeout(req); | |
1274 | /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own | |
1275 | * retry logic */ | |
1276 | req->rq_no_retry_einprogress = 1; | |
1277 | ||
1278 | desc = ptlrpc_prep_bulk_imp(req, page_count, | |
1279 | cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS, | |
1280 | opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK, | |
1281 | OST_BULK_PORTAL); | |
1282 | ||
1283 | if (desc == NULL) | |
1284 | GOTO(out, rc = -ENOMEM); | |
1285 | /* NB request now owns desc and will free it when it gets freed */ | |
1286 | ||
1287 | body = req_capsule_client_get(pill, &RMF_OST_BODY); | |
1288 | ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ); | |
1289 | niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE); | |
1290 | LASSERT(body != NULL && ioobj != NULL && niobuf != NULL); | |
1291 | ||
3b2f75fd | 1292 | lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa); |
d7e09d03 PT |
1293 | |
1294 | obdo_to_ioobj(oa, ioobj); | |
1295 | ioobj->ioo_bufcnt = niocount; | |
1296 | /* The high bits of ioo_max_brw tells server _maximum_ number of bulks | |
1297 | * that might be send for this request. The actual number is decided | |
1298 | * when the RPC is finally sent in ptlrpc_register_bulk(). It sends | |
1299 | * "max - 1" for old client compatibility sending "0", and also so the | |
1300 | * the actual maximum is a power-of-two number, not one less. LU-1431 */ | |
1301 | ioobj_max_brw_set(ioobj, desc->bd_md_max_brw); | |
1302 | osc_pack_capa(req, body, ocapa); | |
1303 | LASSERT(page_count > 0); | |
1304 | pg_prev = pga[0]; | |
1305 | for (requested_nob = i = 0; i < page_count; i++, niobuf++) { | |
1306 | struct brw_page *pg = pga[i]; | |
1307 | int poff = pg->off & ~CFS_PAGE_MASK; | |
1308 | ||
1309 | LASSERT(pg->count > 0); | |
1310 | /* make sure there is no gap in the middle of page array */ | |
1311 | LASSERTF(page_count == 1 || | |
1312 | (ergo(i == 0, poff + pg->count == PAGE_CACHE_SIZE) && | |
1313 | ergo(i > 0 && i < page_count - 1, | |
1314 | poff == 0 && pg->count == PAGE_CACHE_SIZE) && | |
1315 | ergo(i == page_count - 1, poff == 0)), | |
1316 | "i: %d/%d pg: %p off: "LPU64", count: %u\n", | |
1317 | i, page_count, pg, pg->off, pg->count); | |
1318 | LASSERTF(i == 0 || pg->off > pg_prev->off, | |
1319 | "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64 | |
1320 | " prev_pg %p [pri %lu ind %lu] off "LPU64"\n", | |
1321 | i, page_count, | |
1322 | pg->pg, page_private(pg->pg), pg->pg->index, pg->off, | |
1323 | pg_prev->pg, page_private(pg_prev->pg), | |
1324 | pg_prev->pg->index, pg_prev->off); | |
1325 | LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) == | |
1326 | (pg->flag & OBD_BRW_SRVLOCK)); | |
1327 | ||
1328 | ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count); | |
1329 | requested_nob += pg->count; | |
1330 | ||
1331 | if (i > 0 && can_merge_pages(pg_prev, pg)) { | |
1332 | niobuf--; | |
1333 | niobuf->len += pg->count; | |
1334 | } else { | |
1335 | niobuf->offset = pg->off; | |
1336 | niobuf->len = pg->count; | |
1337 | niobuf->flags = pg->flag; | |
1338 | } | |
1339 | pg_prev = pg; | |
1340 | } | |
1341 | ||
1342 | LASSERTF((void *)(niobuf - niocount) == | |
1343 | req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE), | |
1344 | "want %p - real %p\n", req_capsule_client_get(&req->rq_pill, | |
1345 | &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount)); | |
1346 | ||
1347 | osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0); | |
1348 | if (resend) { | |
1349 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1350 | body->oa.o_valid |= OBD_MD_FLFLAGS; | |
1351 | body->oa.o_flags = 0; | |
1352 | } | |
1353 | body->oa.o_flags |= OBD_FL_RECOV_RESEND; | |
1354 | } | |
1355 | ||
1356 | if (osc_should_shrink_grant(cli)) | |
1357 | osc_shrink_grant_local(cli, &body->oa); | |
1358 | ||
1359 | /* size[REQ_REC_OFF] still sizeof (*body) */ | |
1360 | if (opc == OST_WRITE) { | |
1361 | if (cli->cl_checksum && | |
1362 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1363 | /* store cl_cksum_type in a local variable since | |
1364 | * it can be changed via lprocfs */ | |
1365 | cksum_type_t cksum_type = cli->cl_cksum_type; | |
1366 | ||
1367 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) { | |
1368 | oa->o_flags &= OBD_FL_LOCAL_MASK; | |
1369 | body->oa.o_flags = 0; | |
1370 | } | |
1371 | body->oa.o_flags |= cksum_type_pack(cksum_type); | |
1372 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1373 | body->oa.o_cksum = osc_checksum_bulk(requested_nob, | |
1374 | page_count, pga, | |
1375 | OST_WRITE, | |
1376 | cksum_type); | |
1377 | CDEBUG(D_PAGE, "checksum at write origin: %x\n", | |
1378 | body->oa.o_cksum); | |
1379 | /* save this in 'oa', too, for later checking */ | |
1380 | oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1381 | oa->o_flags |= cksum_type_pack(cksum_type); | |
1382 | } else { | |
1383 | /* clear out the checksum flag, in case this is a | |
1384 | * resend but cl_checksum is no longer set. b=11238 */ | |
1385 | oa->o_valid &= ~OBD_MD_FLCKSUM; | |
1386 | } | |
1387 | oa->o_cksum = body->oa.o_cksum; | |
1388 | /* 1 RC per niobuf */ | |
1389 | req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER, | |
1390 | sizeof(__u32) * niocount); | |
1391 | } else { | |
1392 | if (cli->cl_checksum && | |
1393 | !sptlrpc_flavor_has_bulk(&req->rq_flvr)) { | |
1394 | if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) | |
1395 | body->oa.o_flags = 0; | |
1396 | body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type); | |
1397 | body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; | |
1398 | } | |
1399 | } | |
1400 | ptlrpc_request_set_replen(req); | |
1401 | ||
1402 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
1403 | aa = ptlrpc_req_async_args(req); | |
1404 | aa->aa_oa = oa; | |
1405 | aa->aa_requested_nob = requested_nob; | |
1406 | aa->aa_nio_count = niocount; | |
1407 | aa->aa_page_count = page_count; | |
1408 | aa->aa_resends = 0; | |
1409 | aa->aa_ppga = pga; | |
1410 | aa->aa_cli = cli; | |
1411 | INIT_LIST_HEAD(&aa->aa_oaps); | |
1412 | if (ocapa && reserve) | |
1413 | aa->aa_ocapa = capa_get(ocapa); | |
1414 | ||
1415 | *reqp = req; | |
0a3bdb00 | 1416 | return 0; |
d7e09d03 PT |
1417 | |
1418 | out: | |
1419 | ptlrpc_req_finished(req); | |
0a3bdb00 | 1420 | return rc; |
d7e09d03 PT |
1421 | } |
1422 | ||
1423 | static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer, | |
1424 | __u32 client_cksum, __u32 server_cksum, int nob, | |
1425 | obd_count page_count, struct brw_page **pga, | |
1426 | cksum_type_t client_cksum_type) | |
1427 | { | |
1428 | __u32 new_cksum; | |
1429 | char *msg; | |
1430 | cksum_type_t cksum_type; | |
1431 | ||
1432 | if (server_cksum == client_cksum) { | |
1433 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ? | |
1438 | oa->o_flags : 0); | |
1439 | new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE, | |
1440 | cksum_type); | |
1441 | ||
1442 | if (cksum_type != client_cksum_type) | |
1443 | msg = "the server did not use the checksum type specified in " | |
1444 | "the original request - likely a protocol problem"; | |
1445 | else if (new_cksum == server_cksum) | |
1446 | msg = "changed on the client after we checksummed it - " | |
1447 | "likely false positive due to mmap IO (bug 11742)"; | |
1448 | else if (new_cksum == client_cksum) | |
1449 | msg = "changed in transit before arrival at OST"; | |
1450 | else | |
1451 | msg = "changed in transit AND doesn't match the original - " | |
1452 | "likely false positive due to mmap IO (bug 11742)"; | |
1453 | ||
1454 | LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID | |
1455 | " object "DOSTID" extent ["LPU64"-"LPU64"]\n", | |
1456 | msg, libcfs_nid2str(peer->nid), | |
1457 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0, | |
1458 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0, | |
1459 | oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0, | |
1460 | POSTID(&oa->o_oi), pga[0]->off, | |
1461 | pga[page_count-1]->off + pga[page_count-1]->count - 1); | |
1462 | CERROR("original client csum %x (type %x), server csum %x (type %x), " | |
1463 | "client csum now %x\n", client_cksum, client_cksum_type, | |
1464 | server_cksum, cksum_type, new_cksum); | |
1465 | return 1; | |
1466 | } | |
1467 | ||
1468 | /* Note rc enters this function as number of bytes transferred */ | |
1469 | static int osc_brw_fini_request(struct ptlrpc_request *req, int rc) | |
1470 | { | |
1471 | struct osc_brw_async_args *aa = (void *)&req->rq_async_args; | |
1472 | const lnet_process_id_t *peer = | |
1473 | &req->rq_import->imp_connection->c_peer; | |
1474 | struct client_obd *cli = aa->aa_cli; | |
1475 | struct ost_body *body; | |
1476 | __u32 client_cksum = 0; | |
d7e09d03 PT |
1477 | |
1478 | if (rc < 0 && rc != -EDQUOT) { | |
1479 | DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc); | |
0a3bdb00 | 1480 | return rc; |
d7e09d03 PT |
1481 | } |
1482 | ||
1483 | LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc); | |
1484 | body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); | |
1485 | if (body == NULL) { | |
1486 | DEBUG_REQ(D_INFO, req, "Can't unpack body\n"); | |
0a3bdb00 | 1487 | return -EPROTO; |
d7e09d03 PT |
1488 | } |
1489 | ||
1490 | /* set/clear over quota flag for a uid/gid */ | |
1491 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && | |
1492 | body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) { | |
1493 | unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid }; | |
1494 | ||
1495 | CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n", | |
1496 | body->oa.o_uid, body->oa.o_gid, body->oa.o_valid, | |
1497 | body->oa.o_flags); | |
1498 | osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags); | |
1499 | } | |
1500 | ||
1501 | osc_update_grant(cli, body); | |
1502 | ||
1503 | if (rc < 0) | |
0a3bdb00 | 1504 | return rc; |
d7e09d03 PT |
1505 | |
1506 | if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM) | |
1507 | client_cksum = aa->aa_oa->o_cksum; /* save for later */ | |
1508 | ||
1509 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) { | |
1510 | if (rc > 0) { | |
1511 | CERROR("Unexpected +ve rc %d\n", rc); | |
0a3bdb00 | 1512 | return -EPROTO; |
d7e09d03 PT |
1513 | } |
1514 | LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob); | |
1515 | ||
1516 | if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk)) | |
0a3bdb00 | 1517 | return -EAGAIN; |
d7e09d03 PT |
1518 | |
1519 | if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum && | |
1520 | check_write_checksum(&body->oa, peer, client_cksum, | |
1521 | body->oa.o_cksum, aa->aa_requested_nob, | |
1522 | aa->aa_page_count, aa->aa_ppga, | |
1523 | cksum_type_unpack(aa->aa_oa->o_flags))) | |
0a3bdb00 | 1524 | return -EAGAIN; |
d7e09d03 PT |
1525 | |
1526 | rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count, | |
1527 | aa->aa_page_count, aa->aa_ppga); | |
1528 | GOTO(out, rc); | |
1529 | } | |
1530 | ||
1531 | /* The rest of this function executes only for OST_READs */ | |
1532 | ||
1533 | /* if unwrap_bulk failed, return -EAGAIN to retry */ | |
1534 | rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc); | |
1535 | if (rc < 0) | |
1536 | GOTO(out, rc = -EAGAIN); | |
1537 | ||
1538 | if (rc > aa->aa_requested_nob) { | |
1539 | CERROR("Unexpected rc %d (%d requested)\n", rc, | |
1540 | aa->aa_requested_nob); | |
0a3bdb00 | 1541 | return -EPROTO; |
d7e09d03 PT |
1542 | } |
1543 | ||
1544 | if (rc != req->rq_bulk->bd_nob_transferred) { | |
1545 | CERROR ("Unexpected rc %d (%d transferred)\n", | |
1546 | rc, req->rq_bulk->bd_nob_transferred); | |
1547 | return (-EPROTO); | |
1548 | } | |
1549 | ||
1550 | if (rc < aa->aa_requested_nob) | |
1551 | handle_short_read(rc, aa->aa_page_count, aa->aa_ppga); | |
1552 | ||
1553 | if (body->oa.o_valid & OBD_MD_FLCKSUM) { | |
1554 | static int cksum_counter; | |
1555 | __u32 server_cksum = body->oa.o_cksum; | |
1556 | char *via; | |
1557 | char *router; | |
1558 | cksum_type_t cksum_type; | |
1559 | ||
1560 | cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS? | |
1561 | body->oa.o_flags : 0); | |
1562 | client_cksum = osc_checksum_bulk(rc, aa->aa_page_count, | |
1563 | aa->aa_ppga, OST_READ, | |
1564 | cksum_type); | |
1565 | ||
1566 | if (peer->nid == req->rq_bulk->bd_sender) { | |
1567 | via = router = ""; | |
1568 | } else { | |
1569 | via = " via "; | |
1570 | router = libcfs_nid2str(req->rq_bulk->bd_sender); | |
1571 | } | |
1572 | ||
a2ff0f97 | 1573 | if (server_cksum != client_cksum) { |
d7e09d03 PT |
1574 | LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from " |
1575 | "%s%s%s inode "DFID" object "DOSTID | |
1576 | " extent ["LPU64"-"LPU64"]\n", | |
1577 | req->rq_import->imp_obd->obd_name, | |
1578 | libcfs_nid2str(peer->nid), | |
1579 | via, router, | |
1580 | body->oa.o_valid & OBD_MD_FLFID ? | |
1581 | body->oa.o_parent_seq : (__u64)0, | |
1582 | body->oa.o_valid & OBD_MD_FLFID ? | |
1583 | body->oa.o_parent_oid : 0, | |
1584 | body->oa.o_valid & OBD_MD_FLFID ? | |
1585 | body->oa.o_parent_ver : 0, | |
1586 | POSTID(&body->oa.o_oi), | |
1587 | aa->aa_ppga[0]->off, | |
1588 | aa->aa_ppga[aa->aa_page_count-1]->off + | |
1589 | aa->aa_ppga[aa->aa_page_count-1]->count - | |
1590 | 1); | |
1591 | CERROR("client %x, server %x, cksum_type %x\n", | |
1592 | client_cksum, server_cksum, cksum_type); | |
1593 | cksum_counter = 0; | |
1594 | aa->aa_oa->o_cksum = client_cksum; | |
1595 | rc = -EAGAIN; | |
1596 | } else { | |
1597 | cksum_counter++; | |
1598 | CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum); | |
1599 | rc = 0; | |
1600 | } | |
1601 | } else if (unlikely(client_cksum)) { | |
1602 | static int cksum_missed; | |
1603 | ||
1604 | cksum_missed++; | |
1605 | if ((cksum_missed & (-cksum_missed)) == cksum_missed) | |
1606 | CERROR("Checksum %u requested from %s but not sent\n", | |
1607 | cksum_missed, libcfs_nid2str(peer->nid)); | |
1608 | } else { | |
1609 | rc = 0; | |
1610 | } | |
1611 | out: | |
1612 | if (rc >= 0) | |
3b2f75fd | 1613 | lustre_get_wire_obdo(&req->rq_import->imp_connect_data, |
1614 | aa->aa_oa, &body->oa); | |
d7e09d03 | 1615 | |
0a3bdb00 | 1616 | return rc; |
d7e09d03 PT |
1617 | } |
1618 | ||
1619 | static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa, | |
1620 | struct lov_stripe_md *lsm, | |
1621 | obd_count page_count, struct brw_page **pga, | |
1622 | struct obd_capa *ocapa) | |
1623 | { | |
1624 | struct ptlrpc_request *req; | |
1625 | int rc; | |
1626 | wait_queue_head_t waitq; | |
1627 | int generation, resends = 0; | |
1628 | struct l_wait_info lwi; | |
1629 | ||
d7e09d03 PT |
1630 | init_waitqueue_head(&waitq); |
1631 | generation = exp->exp_obd->u.cli.cl_import->imp_generation; | |
1632 | ||
1633 | restart_bulk: | |
1634 | rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm, | |
1635 | page_count, pga, &req, ocapa, 0, resends); | |
1636 | if (rc != 0) | |
1637 | return (rc); | |
1638 | ||
1639 | if (resends) { | |
1640 | req->rq_generation_set = 1; | |
1641 | req->rq_import_generation = generation; | |
1642 | req->rq_sent = cfs_time_current_sec() + resends; | |
1643 | } | |
1644 | ||
1645 | rc = ptlrpc_queue_wait(req); | |
1646 | ||
1647 | if (rc == -ETIMEDOUT && req->rq_resend) { | |
1648 | DEBUG_REQ(D_HA, req, "BULK TIMEOUT"); | |
1649 | ptlrpc_req_finished(req); | |
1650 | goto restart_bulk; | |
1651 | } | |
1652 | ||
1653 | rc = osc_brw_fini_request(req, rc); | |
1654 | ||
1655 | ptlrpc_req_finished(req); | |
1656 | /* When server return -EINPROGRESS, client should always retry | |
1657 | * regardless of the number of times the bulk was resent already.*/ | |
1658 | if (osc_recoverable_error(rc)) { | |
1659 | resends++; | |
1660 | if (rc != -EINPROGRESS && | |
1661 | !client_should_resend(resends, &exp->exp_obd->u.cli)) { | |
1662 | CERROR("%s: too many resend retries for object: " | |
1663 | ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name, | |
1664 | POSTID(&oa->o_oi), rc); | |
1665 | goto out; | |
1666 | } | |
1667 | if (generation != | |
1668 | exp->exp_obd->u.cli.cl_import->imp_generation) { | |
1669 | CDEBUG(D_HA, "%s: resend cross eviction for object: " | |
1670 | ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name, | |
1671 | POSTID(&oa->o_oi), rc); | |
1672 | goto out; | |
1673 | } | |
1674 | ||
1675 | lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL, | |
1676 | NULL); | |
1677 | l_wait_event(waitq, 0, &lwi); | |
1678 | ||
1679 | goto restart_bulk; | |
1680 | } | |
1681 | out: | |
1682 | if (rc == -EAGAIN || rc == -EINPROGRESS) | |
1683 | rc = -EIO; | |
0a3bdb00 | 1684 | return rc; |
d7e09d03 PT |
1685 | } |
1686 | ||
1687 | static int osc_brw_redo_request(struct ptlrpc_request *request, | |
1688 | struct osc_brw_async_args *aa, int rc) | |
1689 | { | |
1690 | struct ptlrpc_request *new_req; | |
1691 | struct osc_brw_async_args *new_aa; | |
1692 | struct osc_async_page *oap; | |
d7e09d03 PT |
1693 | |
1694 | DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request, | |
1695 | "redo for recoverable error %d", rc); | |
1696 | ||
1697 | rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) == | |
1698 | OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ, | |
1699 | aa->aa_cli, aa->aa_oa, | |
1700 | NULL /* lsm unused by osc currently */, | |
1701 | aa->aa_page_count, aa->aa_ppga, | |
1702 | &new_req, aa->aa_ocapa, 0, 1); | |
1703 | if (rc) | |
0a3bdb00 | 1704 | return rc; |
d7e09d03 PT |
1705 | |
1706 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
1707 | if (oap->oap_request != NULL) { | |
1708 | LASSERTF(request == oap->oap_request, | |
1709 | "request %p != oap_request %p\n", | |
1710 | request, oap->oap_request); | |
1711 | if (oap->oap_interrupted) { | |
1712 | ptlrpc_req_finished(new_req); | |
0a3bdb00 | 1713 | return -EINTR; |
d7e09d03 PT |
1714 | } |
1715 | } | |
1716 | } | |
1717 | /* New request takes over pga and oaps from old request. | |
1718 | * Note that copying a list_head doesn't work, need to move it... */ | |
1719 | aa->aa_resends++; | |
1720 | new_req->rq_interpret_reply = request->rq_interpret_reply; | |
1721 | new_req->rq_async_args = request->rq_async_args; | |
d7e09d03 PT |
1722 | /* cap resend delay to the current request timeout, this is similar to |
1723 | * what ptlrpc does (see after_reply()) */ | |
1724 | if (aa->aa_resends > new_req->rq_timeout) | |
1725 | new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout; | |
1726 | else | |
1727 | new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends; | |
1728 | new_req->rq_generation_set = 1; | |
1729 | new_req->rq_import_generation = request->rq_import_generation; | |
1730 | ||
1731 | new_aa = ptlrpc_req_async_args(new_req); | |
1732 | ||
1733 | INIT_LIST_HEAD(&new_aa->aa_oaps); | |
1734 | list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps); | |
1735 | INIT_LIST_HEAD(&new_aa->aa_exts); | |
1736 | list_splice_init(&aa->aa_exts, &new_aa->aa_exts); | |
1737 | new_aa->aa_resends = aa->aa_resends; | |
1738 | ||
1739 | list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) { | |
1740 | if (oap->oap_request) { | |
1741 | ptlrpc_req_finished(oap->oap_request); | |
1742 | oap->oap_request = ptlrpc_request_addref(new_req); | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | new_aa->aa_ocapa = aa->aa_ocapa; | |
1747 | aa->aa_ocapa = NULL; | |
1748 | ||
1749 | /* XXX: This code will run into problem if we're going to support | |
1750 | * to add a series of BRW RPCs into a self-defined ptlrpc_request_set | |
1751 | * and wait for all of them to be finished. We should inherit request | |
1752 | * set from old request. */ | |
1753 | ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1); | |
1754 | ||
1755 | DEBUG_REQ(D_INFO, new_req, "new request"); | |
0a3bdb00 | 1756 | return 0; |
d7e09d03 PT |
1757 | } |
1758 | ||
1759 | /* | |
1760 | * ugh, we want disk allocation on the target to happen in offset order. we'll | |
1761 | * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do | |
1762 | * fine for our small page arrays and doesn't require allocation. its an | |
1763 | * insertion sort that swaps elements that are strides apart, shrinking the | |
1764 | * stride down until its '1' and the array is sorted. | |
1765 | */ | |
1766 | static void sort_brw_pages(struct brw_page **array, int num) | |
1767 | { | |
1768 | int stride, i, j; | |
1769 | struct brw_page *tmp; | |
1770 | ||
1771 | if (num == 1) | |
1772 | return; | |
1773 | for (stride = 1; stride < num ; stride = (stride * 3) + 1) | |
1774 | ; | |
1775 | ||
1776 | do { | |
1777 | stride /= 3; | |
1778 | for (i = stride ; i < num ; i++) { | |
1779 | tmp = array[i]; | |
1780 | j = i; | |
1781 | while (j >= stride && array[j - stride]->off > tmp->off) { | |
1782 | array[j] = array[j - stride]; | |
1783 | j -= stride; | |
1784 | } | |
1785 | array[j] = tmp; | |
1786 | } | |
1787 | } while (stride > 1); | |
1788 | } | |
1789 | ||
1790 | static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages) | |
1791 | { | |
1792 | int count = 1; | |
1793 | int offset; | |
1794 | int i = 0; | |
1795 | ||
1796 | LASSERT (pages > 0); | |
1797 | offset = pg[i]->off & ~CFS_PAGE_MASK; | |
1798 | ||
1799 | for (;;) { | |
1800 | pages--; | |
1801 | if (pages == 0) /* that's all */ | |
1802 | return count; | |
1803 | ||
1804 | if (offset + pg[i]->count < PAGE_CACHE_SIZE) | |
1805 | return count; /* doesn't end on page boundary */ | |
1806 | ||
1807 | i++; | |
1808 | offset = pg[i]->off & ~CFS_PAGE_MASK; | |
1809 | if (offset != 0) /* doesn't start on page boundary */ | |
1810 | return count; | |
1811 | ||
1812 | count++; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count) | |
1817 | { | |
1818 | struct brw_page **ppga; | |
1819 | int i; | |
1820 | ||
1821 | OBD_ALLOC(ppga, sizeof(*ppga) * count); | |
1822 | if (ppga == NULL) | |
1823 | return NULL; | |
1824 | ||
1825 | for (i = 0; i < count; i++) | |
1826 | ppga[i] = pga + i; | |
1827 | return ppga; | |
1828 | } | |
1829 | ||
1830 | static void osc_release_ppga(struct brw_page **ppga, obd_count count) | |
1831 | { | |
1832 | LASSERT(ppga != NULL); | |
1833 | OBD_FREE(ppga, sizeof(*ppga) * count); | |
1834 | } | |
1835 | ||
1836 | static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo, | |
1837 | obd_count page_count, struct brw_page *pga, | |
1838 | struct obd_trans_info *oti) | |
1839 | { | |
1840 | struct obdo *saved_oa = NULL; | |
1841 | struct brw_page **ppga, **orig; | |
1842 | struct obd_import *imp = class_exp2cliimp(exp); | |
1843 | struct client_obd *cli; | |
1844 | int rc, page_count_orig; | |
d7e09d03 PT |
1845 | |
1846 | LASSERT((imp != NULL) && (imp->imp_obd != NULL)); | |
1847 | cli = &imp->imp_obd->u.cli; | |
1848 | ||
1849 | if (cmd & OBD_BRW_CHECK) { | |
1850 | /* The caller just wants to know if there's a chance that this | |
1851 | * I/O can succeed */ | |
1852 | ||
1853 | if (imp->imp_invalid) | |
0a3bdb00 GKH |
1854 | return -EIO; |
1855 | return 0; | |
d7e09d03 PT |
1856 | } |
1857 | ||
1858 | /* test_brw with a failed create can trip this, maybe others. */ | |
1859 | LASSERT(cli->cl_max_pages_per_rpc); | |
1860 | ||
1861 | rc = 0; | |
1862 | ||
1863 | orig = ppga = osc_build_ppga(pga, page_count); | |
1864 | if (ppga == NULL) | |
0a3bdb00 | 1865 | return -ENOMEM; |
d7e09d03 PT |
1866 | page_count_orig = page_count; |
1867 | ||
1868 | sort_brw_pages(ppga, page_count); | |
1869 | while (page_count) { | |
1870 | obd_count pages_per_brw; | |
1871 | ||
1872 | if (page_count > cli->cl_max_pages_per_rpc) | |
1873 | pages_per_brw = cli->cl_max_pages_per_rpc; | |
1874 | else | |
1875 | pages_per_brw = page_count; | |
1876 | ||
1877 | pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw); | |
1878 | ||
1879 | if (saved_oa != NULL) { | |
1880 | /* restore previously saved oa */ | |
1881 | *oinfo->oi_oa = *saved_oa; | |
1882 | } else if (page_count > pages_per_brw) { | |
1883 | /* save a copy of oa (brw will clobber it) */ | |
1884 | OBDO_ALLOC(saved_oa); | |
1885 | if (saved_oa == NULL) | |
1886 | GOTO(out, rc = -ENOMEM); | |
1887 | *saved_oa = *oinfo->oi_oa; | |
1888 | } | |
1889 | ||
1890 | rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md, | |
1891 | pages_per_brw, ppga, oinfo->oi_capa); | |
1892 | ||
1893 | if (rc != 0) | |
1894 | break; | |
1895 | ||
1896 | page_count -= pages_per_brw; | |
1897 | ppga += pages_per_brw; | |
1898 | } | |
1899 | ||
1900 | out: | |
1901 | osc_release_ppga(orig, page_count_orig); | |
1902 | ||
1903 | if (saved_oa != NULL) | |
1904 | OBDO_FREE(saved_oa); | |
1905 | ||
0a3bdb00 | 1906 | return rc; |
d7e09d03 PT |
1907 | } |
1908 | ||
1909 | static int brw_interpret(const struct lu_env *env, | |
1910 | struct ptlrpc_request *req, void *data, int rc) | |
1911 | { | |
1912 | struct osc_brw_async_args *aa = data; | |
1913 | struct osc_extent *ext; | |
1914 | struct osc_extent *tmp; | |
1915 | struct cl_object *obj = NULL; | |
1916 | struct client_obd *cli = aa->aa_cli; | |
d7e09d03 PT |
1917 | |
1918 | rc = osc_brw_fini_request(req, rc); | |
1919 | CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc); | |
1920 | /* When server return -EINPROGRESS, client should always retry | |
1921 | * regardless of the number of times the bulk was resent already. */ | |
1922 | if (osc_recoverable_error(rc)) { | |
1923 | if (req->rq_import_generation != | |
1924 | req->rq_import->imp_generation) { | |
1925 | CDEBUG(D_HA, "%s: resend cross eviction for object: " | |
1926 | ""DOSTID", rc = %d.\n", | |
1927 | req->rq_import->imp_obd->obd_name, | |
1928 | POSTID(&aa->aa_oa->o_oi), rc); | |
1929 | } else if (rc == -EINPROGRESS || | |
1930 | client_should_resend(aa->aa_resends, aa->aa_cli)) { | |
1931 | rc = osc_brw_redo_request(req, aa, rc); | |
1932 | } else { | |
1933 | CERROR("%s: too many resent retries for object: " | |
1934 | ""LPU64":"LPU64", rc = %d.\n", | |
1935 | req->rq_import->imp_obd->obd_name, | |
1936 | POSTID(&aa->aa_oa->o_oi), rc); | |
1937 | } | |
1938 | ||
1939 | if (rc == 0) | |
0a3bdb00 | 1940 | return 0; |
d7e09d03 PT |
1941 | else if (rc == -EAGAIN || rc == -EINPROGRESS) |
1942 | rc = -EIO; | |
1943 | } | |
1944 | ||
1945 | if (aa->aa_ocapa) { | |
1946 | capa_put(aa->aa_ocapa); | |
1947 | aa->aa_ocapa = NULL; | |
1948 | } | |
1949 | ||
1950 | list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) { | |
1951 | if (obj == NULL && rc == 0) { | |
1952 | obj = osc2cl(ext->oe_obj); | |
1953 | cl_object_get(obj); | |
1954 | } | |
1955 | ||
1956 | list_del_init(&ext->oe_link); | |
1957 | osc_extent_finish(env, ext, 1, rc); | |
1958 | } | |
1959 | LASSERT(list_empty(&aa->aa_exts)); | |
1960 | LASSERT(list_empty(&aa->aa_oaps)); | |
1961 | ||
1962 | if (obj != NULL) { | |
1963 | struct obdo *oa = aa->aa_oa; | |
1964 | struct cl_attr *attr = &osc_env_info(env)->oti_attr; | |
1965 | unsigned long valid = 0; | |
1966 | ||
1967 | LASSERT(rc == 0); | |
1968 | if (oa->o_valid & OBD_MD_FLBLOCKS) { | |
1969 | attr->cat_blocks = oa->o_blocks; | |
1970 | valid |= CAT_BLOCKS; | |
1971 | } | |
1972 | if (oa->o_valid & OBD_MD_FLMTIME) { | |
1973 | attr->cat_mtime = oa->o_mtime; | |
1974 | valid |= CAT_MTIME; | |
1975 | } | |
1976 | if (oa->o_valid & OBD_MD_FLATIME) { | |
1977 | attr->cat_atime = oa->o_atime; | |
1978 | valid |= CAT_ATIME; | |
1979 | } | |
1980 | if (oa->o_valid & OBD_MD_FLCTIME) { | |
1981 | attr->cat_ctime = oa->o_ctime; | |
1982 | valid |= CAT_CTIME; | |
1983 | } | |
1984 | if (valid != 0) { | |
1985 | cl_object_attr_lock(obj); | |
1986 | cl_object_attr_set(env, obj, attr, valid); | |
1987 | cl_object_attr_unlock(obj); | |
1988 | } | |
1989 | cl_object_put(env, obj); | |
1990 | } | |
1991 | OBDO_FREE(aa->aa_oa); | |
1992 | ||
1993 | cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc : | |
1994 | req->rq_bulk->bd_nob_transferred); | |
1995 | osc_release_ppga(aa->aa_ppga, aa->aa_page_count); | |
1996 | ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred); | |
1997 | ||
1998 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
1999 | /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters | |
2000 | * is called so we know whether to go to sync BRWs or wait for more | |
2001 | * RPCs to complete */ | |
2002 | if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) | |
2003 | cli->cl_w_in_flight--; | |
2004 | else | |
2005 | cli->cl_r_in_flight--; | |
2006 | osc_wake_cache_waiters(cli); | |
2007 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
2008 | ||
2009 | osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME); | |
0a3bdb00 | 2010 | return rc; |
d7e09d03 PT |
2011 | } |
2012 | ||
d7e09d03 PT |
2013 | /** |
2014 | * Build an RPC by the list of extent @ext_list. The caller must ensure | |
2015 | * that the total pages in this list are NOT over max pages per RPC. | |
2016 | * Extents in the list must be in OES_RPC state. | |
2017 | */ | |
2018 | int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, | |
2019 | struct list_head *ext_list, int cmd, pdl_policy_t pol) | |
2020 | { | |
cad6fafa BJ |
2021 | struct ptlrpc_request *req = NULL; |
2022 | struct osc_extent *ext; | |
2023 | struct brw_page **pga = NULL; | |
2024 | struct osc_brw_async_args *aa = NULL; | |
2025 | struct obdo *oa = NULL; | |
2026 | struct osc_async_page *oap; | |
2027 | struct osc_async_page *tmp; | |
2028 | struct cl_req *clerq = NULL; | |
2029 | enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : | |
2030 | CRT_READ; | |
2031 | struct ldlm_lock *lock = NULL; | |
2032 | struct cl_req_attr *crattr = NULL; | |
2033 | obd_off starting_offset = OBD_OBJECT_EOF; | |
2034 | obd_off ending_offset = 0; | |
2035 | int mpflag = 0; | |
2036 | int mem_tight = 0; | |
2037 | int page_count = 0; | |
2038 | int i; | |
2039 | int rc; | |
d7e09d03 | 2040 | LIST_HEAD(rpc_list); |
d7e09d03 | 2041 | |
d7e09d03 PT |
2042 | LASSERT(!list_empty(ext_list)); |
2043 | ||
2044 | /* add pages into rpc_list to build BRW rpc */ | |
2045 | list_for_each_entry(ext, ext_list, oe_link) { | |
2046 | LASSERT(ext->oe_state == OES_RPC); | |
2047 | mem_tight |= ext->oe_memalloc; | |
2048 | list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) { | |
2049 | ++page_count; | |
2050 | list_add_tail(&oap->oap_rpc_item, &rpc_list); | |
2051 | if (starting_offset > oap->oap_obj_off) | |
2052 | starting_offset = oap->oap_obj_off; | |
2053 | else | |
2054 | LASSERT(oap->oap_page_off == 0); | |
2055 | if (ending_offset < oap->oap_obj_off + oap->oap_count) | |
2056 | ending_offset = oap->oap_obj_off + | |
2057 | oap->oap_count; | |
2058 | else | |
2059 | LASSERT(oap->oap_page_off + oap->oap_count == | |
2060 | PAGE_CACHE_SIZE); | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | if (mem_tight) | |
2065 | mpflag = cfs_memory_pressure_get_and_set(); | |
2066 | ||
cad6fafa BJ |
2067 | OBD_ALLOC(crattr, sizeof(*crattr)); |
2068 | if (crattr == NULL) | |
2069 | GOTO(out, rc = -ENOMEM); | |
2070 | ||
d7e09d03 PT |
2071 | OBD_ALLOC(pga, sizeof(*pga) * page_count); |
2072 | if (pga == NULL) | |
2073 | GOTO(out, rc = -ENOMEM); | |
2074 | ||
2075 | OBDO_ALLOC(oa); | |
2076 | if (oa == NULL) | |
2077 | GOTO(out, rc = -ENOMEM); | |
2078 | ||
2079 | i = 0; | |
2080 | list_for_each_entry(oap, &rpc_list, oap_rpc_item) { | |
2081 | struct cl_page *page = oap2cl_page(oap); | |
2082 | if (clerq == NULL) { | |
2083 | clerq = cl_req_alloc(env, page, crt, | |
cad6fafa | 2084 | 1 /* only 1-object rpcs for now */); |
d7e09d03 PT |
2085 | if (IS_ERR(clerq)) |
2086 | GOTO(out, rc = PTR_ERR(clerq)); | |
2087 | lock = oap->oap_ldlm_lock; | |
2088 | } | |
2089 | if (mem_tight) | |
2090 | oap->oap_brw_flags |= OBD_BRW_MEMALLOC; | |
2091 | pga[i] = &oap->oap_brw_page; | |
2092 | pga[i]->off = oap->oap_obj_off + oap->oap_page_off; | |
2093 | CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n", | |
cad6fafa BJ |
2094 | pga[i]->pg, page_index(oap->oap_page), oap, |
2095 | pga[i]->flag); | |
d7e09d03 PT |
2096 | i++; |
2097 | cl_req_page_add(env, clerq, page); | |
2098 | } | |
2099 | ||
2100 | /* always get the data for the obdo for the rpc */ | |
2101 | LASSERT(clerq != NULL); | |
cad6fafa BJ |
2102 | crattr->cra_oa = oa; |
2103 | cl_req_attr_set(env, clerq, crattr, ~0ULL); | |
d7e09d03 PT |
2104 | if (lock) { |
2105 | oa->o_handle = lock->l_remote_handle; | |
2106 | oa->o_valid |= OBD_MD_FLHANDLE; | |
2107 | } | |
2108 | ||
2109 | rc = cl_req_prep(env, clerq); | |
2110 | if (rc != 0) { | |
2111 | CERROR("cl_req_prep failed: %d\n", rc); | |
2112 | GOTO(out, rc); | |
2113 | } | |
2114 | ||
2115 | sort_brw_pages(pga, page_count); | |
2116 | rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count, | |
cad6fafa | 2117 | pga, &req, crattr->cra_capa, 1, 0); |
d7e09d03 PT |
2118 | if (rc != 0) { |
2119 | CERROR("prep_req failed: %d\n", rc); | |
2120 | GOTO(out, rc); | |
2121 | } | |
2122 | ||
d7e09d03 PT |
2123 | req->rq_interpret_reply = brw_interpret; |
2124 | ||
2125 | if (mem_tight != 0) | |
2126 | req->rq_memalloc = 1; | |
2127 | ||
2128 | /* Need to update the timestamps after the request is built in case | |
2129 | * we race with setattr (locally or in queue at OST). If OST gets | |
2130 | * later setattr before earlier BRW (as determined by the request xid), | |
2131 | * the OST will not use BRW timestamps. Sadly, there is no obvious | |
2132 | * way to do this in a single call. bug 10150 */ | |
cad6fafa | 2133 | cl_req_attr_set(env, clerq, crattr, |
d7e09d03 PT |
2134 | OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME); |
2135 | ||
cad6fafa | 2136 | lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid); |
d7e09d03 PT |
2137 | |
2138 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2139 | aa = ptlrpc_req_async_args(req); | |
2140 | INIT_LIST_HEAD(&aa->aa_oaps); | |
2141 | list_splice_init(&rpc_list, &aa->aa_oaps); | |
2142 | INIT_LIST_HEAD(&aa->aa_exts); | |
2143 | list_splice_init(ext_list, &aa->aa_exts); | |
2144 | aa->aa_clerq = clerq; | |
2145 | ||
2146 | /* queued sync pages can be torn down while the pages | |
2147 | * were between the pending list and the rpc */ | |
2148 | tmp = NULL; | |
2149 | list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) { | |
2150 | /* only one oap gets a request reference */ | |
2151 | if (tmp == NULL) | |
2152 | tmp = oap; | |
2153 | if (oap->oap_interrupted && !req->rq_intr) { | |
2154 | CDEBUG(D_INODE, "oap %p in req %p interrupted\n", | |
2155 | oap, req); | |
2156 | ptlrpc_mark_interrupted(req); | |
2157 | } | |
2158 | } | |
2159 | if (tmp != NULL) | |
2160 | tmp->oap_request = ptlrpc_request_addref(req); | |
2161 | ||
2162 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
2163 | starting_offset >>= PAGE_CACHE_SHIFT; | |
2164 | if (cmd == OBD_BRW_READ) { | |
2165 | cli->cl_r_in_flight++; | |
2166 | lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count); | |
2167 | lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight); | |
2168 | lprocfs_oh_tally_log2(&cli->cl_read_offset_hist, | |
2169 | starting_offset + 1); | |
2170 | } else { | |
2171 | cli->cl_w_in_flight++; | |
2172 | lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count); | |
2173 | lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight); | |
2174 | lprocfs_oh_tally_log2(&cli->cl_write_offset_hist, | |
2175 | starting_offset + 1); | |
2176 | } | |
2177 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
2178 | ||
2179 | DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight", | |
2180 | page_count, aa, cli->cl_r_in_flight, | |
2181 | cli->cl_w_in_flight); | |
2182 | ||
2183 | /* XXX: Maybe the caller can check the RPC bulk descriptor to | |
2184 | * see which CPU/NUMA node the majority of pages were allocated | |
2185 | * on, and try to assign the async RPC to the CPU core | |
2186 | * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic. | |
2187 | * | |
2188 | * But on the other hand, we expect that multiple ptlrpcd | |
2189 | * threads and the initial write sponsor can run in parallel, | |
2190 | * especially when data checksum is enabled, which is CPU-bound | |
2191 | * operation and single ptlrpcd thread cannot process in time. | |
2192 | * So more ptlrpcd threads sharing BRW load | |
2193 | * (with PDL_POLICY_ROUND) seems better. | |
2194 | */ | |
2195 | ptlrpcd_add_req(req, pol, -1); | |
2196 | rc = 0; | |
d7e09d03 PT |
2197 | |
2198 | out: | |
2199 | if (mem_tight != 0) | |
2200 | cfs_memory_pressure_restore(mpflag); | |
2201 | ||
cad6fafa BJ |
2202 | if (crattr != NULL) { |
2203 | capa_put(crattr->cra_capa); | |
2204 | OBD_FREE(crattr, sizeof(*crattr)); | |
2205 | } | |
2206 | ||
d7e09d03 PT |
2207 | if (rc != 0) { |
2208 | LASSERT(req == NULL); | |
2209 | ||
2210 | if (oa) | |
2211 | OBDO_FREE(oa); | |
2212 | if (pga) | |
2213 | OBD_FREE(pga, sizeof(*pga) * page_count); | |
2214 | /* this should happen rarely and is pretty bad, it makes the | |
2215 | * pending list not follow the dirty order */ | |
2216 | while (!list_empty(ext_list)) { | |
2217 | ext = list_entry(ext_list->next, struct osc_extent, | |
2218 | oe_link); | |
2219 | list_del_init(&ext->oe_link); | |
2220 | osc_extent_finish(env, ext, 0, rc); | |
2221 | } | |
2222 | if (clerq && !IS_ERR(clerq)) | |
2223 | cl_req_completion(env, clerq, rc); | |
2224 | } | |
0a3bdb00 | 2225 | return rc; |
d7e09d03 PT |
2226 | } |
2227 | ||
2228 | static int osc_set_lock_data_with_check(struct ldlm_lock *lock, | |
2229 | struct ldlm_enqueue_info *einfo) | |
2230 | { | |
2231 | void *data = einfo->ei_cbdata; | |
2232 | int set = 0; | |
2233 | ||
2234 | LASSERT(lock != NULL); | |
2235 | LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl); | |
2236 | LASSERT(lock->l_resource->lr_type == einfo->ei_type); | |
2237 | LASSERT(lock->l_completion_ast == einfo->ei_cb_cp); | |
2238 | LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl); | |
2239 | ||
2240 | lock_res_and_lock(lock); | |
2241 | spin_lock(&osc_ast_guard); | |
2242 | ||
2243 | if (lock->l_ast_data == NULL) | |
2244 | lock->l_ast_data = data; | |
2245 | if (lock->l_ast_data == data) | |
2246 | set = 1; | |
2247 | ||
2248 | spin_unlock(&osc_ast_guard); | |
2249 | unlock_res_and_lock(lock); | |
2250 | ||
2251 | return set; | |
2252 | } | |
2253 | ||
2254 | static int osc_set_data_with_check(struct lustre_handle *lockh, | |
2255 | struct ldlm_enqueue_info *einfo) | |
2256 | { | |
2257 | struct ldlm_lock *lock = ldlm_handle2lock(lockh); | |
2258 | int set = 0; | |
2259 | ||
2260 | if (lock != NULL) { | |
2261 | set = osc_set_lock_data_with_check(lock, einfo); | |
2262 | LDLM_LOCK_PUT(lock); | |
2263 | } else | |
2264 | CERROR("lockh %p, data %p - client evicted?\n", | |
2265 | lockh, einfo->ei_cbdata); | |
2266 | return set; | |
2267 | } | |
2268 | ||
2269 | static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm, | |
2270 | ldlm_iterator_t replace, void *data) | |
2271 | { | |
2272 | struct ldlm_res_id res_id; | |
2273 | struct obd_device *obd = class_exp2obd(exp); | |
2274 | ||
2275 | ostid_build_res_name(&lsm->lsm_oi, &res_id); | |
2276 | ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data); | |
2277 | return 0; | |
2278 | } | |
2279 | ||
2280 | /* find any ldlm lock of the inode in osc | |
2281 | * return 0 not find | |
2282 | * 1 find one | |
2283 | * < 0 error */ | |
2284 | static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm, | |
2285 | ldlm_iterator_t replace, void *data) | |
2286 | { | |
2287 | struct ldlm_res_id res_id; | |
2288 | struct obd_device *obd = class_exp2obd(exp); | |
2289 | int rc = 0; | |
2290 | ||
2291 | ostid_build_res_name(&lsm->lsm_oi, &res_id); | |
2292 | rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data); | |
2293 | if (rc == LDLM_ITER_STOP) | |
2294 | return(1); | |
2295 | if (rc == LDLM_ITER_CONTINUE) | |
2296 | return(0); | |
2297 | return(rc); | |
2298 | } | |
2299 | ||
2300 | static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb, | |
2301 | obd_enqueue_update_f upcall, void *cookie, | |
2302 | __u64 *flags, int agl, int rc) | |
2303 | { | |
2304 | int intent = *flags & LDLM_FL_HAS_INTENT; | |
d7e09d03 PT |
2305 | |
2306 | if (intent) { | |
2307 | /* The request was created before ldlm_cli_enqueue call. */ | |
2308 | if (rc == ELDLM_LOCK_ABORTED) { | |
2309 | struct ldlm_reply *rep; | |
2310 | rep = req_capsule_server_get(&req->rq_pill, | |
2311 | &RMF_DLM_REP); | |
2312 | ||
2313 | LASSERT(rep != NULL); | |
2d58de78 LW |
2314 | rep->lock_policy_res1 = |
2315 | ptlrpc_status_ntoh(rep->lock_policy_res1); | |
d7e09d03 PT |
2316 | if (rep->lock_policy_res1) |
2317 | rc = rep->lock_policy_res1; | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) || | |
2322 | (rc == 0)) { | |
2323 | *flags |= LDLM_FL_LVB_READY; | |
2324 | CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n", | |
2325 | lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime); | |
2326 | } | |
2327 | ||
2328 | /* Call the update callback. */ | |
2329 | rc = (*upcall)(cookie, rc); | |
0a3bdb00 | 2330 | return rc; |
d7e09d03 PT |
2331 | } |
2332 | ||
2333 | static int osc_enqueue_interpret(const struct lu_env *env, | |
2334 | struct ptlrpc_request *req, | |
2335 | struct osc_enqueue_args *aa, int rc) | |
2336 | { | |
2337 | struct ldlm_lock *lock; | |
2338 | struct lustre_handle handle; | |
2339 | __u32 mode; | |
2340 | struct ost_lvb *lvb; | |
2341 | __u32 lvb_len; | |
2342 | __u64 *flags = aa->oa_flags; | |
2343 | ||
2344 | /* Make a local copy of a lock handle and a mode, because aa->oa_* | |
2345 | * might be freed anytime after lock upcall has been called. */ | |
2346 | lustre_handle_copy(&handle, aa->oa_lockh); | |
2347 | mode = aa->oa_ei->ei_mode; | |
2348 | ||
2349 | /* ldlm_cli_enqueue is holding a reference on the lock, so it must | |
2350 | * be valid. */ | |
2351 | lock = ldlm_handle2lock(&handle); | |
2352 | ||
2353 | /* Take an additional reference so that a blocking AST that | |
2354 | * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed | |
2355 | * to arrive after an upcall has been executed by | |
2356 | * osc_enqueue_fini(). */ | |
2357 | ldlm_lock_addref(&handle, mode); | |
2358 | ||
2359 | /* Let CP AST to grant the lock first. */ | |
2360 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1); | |
2361 | ||
2362 | if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) { | |
2363 | lvb = NULL; | |
2364 | lvb_len = 0; | |
2365 | } else { | |
2366 | lvb = aa->oa_lvb; | |
2367 | lvb_len = sizeof(*aa->oa_lvb); | |
2368 | } | |
2369 | ||
2370 | /* Complete obtaining the lock procedure. */ | |
2371 | rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1, | |
2372 | mode, flags, lvb, lvb_len, &handle, rc); | |
2373 | /* Complete osc stuff. */ | |
2374 | rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie, | |
2375 | flags, aa->oa_agl, rc); | |
2376 | ||
2377 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10); | |
2378 | ||
2379 | /* Release the lock for async request. */ | |
2380 | if (lustre_handle_is_used(&handle) && rc == ELDLM_OK) | |
2381 | /* | |
2382 | * Releases a reference taken by ldlm_cli_enqueue(), if it is | |
2383 | * not already released by | |
2384 | * ldlm_cli_enqueue_fini()->failed_lock_cleanup() | |
2385 | */ | |
2386 | ldlm_lock_decref(&handle, mode); | |
2387 | ||
2388 | LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n", | |
2389 | aa->oa_lockh, req, aa); | |
2390 | ldlm_lock_decref(&handle, mode); | |
2391 | LDLM_LOCK_PUT(lock); | |
2392 | return rc; | |
2393 | } | |
2394 | ||
2395 | void osc_update_enqueue(struct lustre_handle *lov_lockhp, | |
875332d4 | 2396 | struct lov_oinfo *loi, __u64 flags, |
d7e09d03 PT |
2397 | struct ost_lvb *lvb, __u32 mode, int rc) |
2398 | { | |
2399 | struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp); | |
2400 | ||
2401 | if (rc == ELDLM_OK) { | |
2402 | __u64 tmp; | |
2403 | ||
2404 | LASSERT(lock != NULL); | |
2405 | loi->loi_lvb = *lvb; | |
2406 | tmp = loi->loi_lvb.lvb_size; | |
2407 | /* Extend KMS up to the end of this lock and no further | |
2408 | * A lock on [x,y] means a KMS of up to y + 1 bytes! */ | |
2409 | if (tmp > lock->l_policy_data.l_extent.end) | |
2410 | tmp = lock->l_policy_data.l_extent.end + 1; | |
2411 | if (tmp >= loi->loi_kms) { | |
2412 | LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64 | |
2413 | ", kms="LPU64, loi->loi_lvb.lvb_size, tmp); | |
2414 | loi_kms_set(loi, tmp); | |
2415 | } else { | |
2416 | LDLM_DEBUG(lock, "lock acquired, setting rss=" | |
2417 | LPU64"; leaving kms="LPU64", end="LPU64, | |
2418 | loi->loi_lvb.lvb_size, loi->loi_kms, | |
2419 | lock->l_policy_data.l_extent.end); | |
2420 | } | |
2421 | ldlm_lock_allow_match(lock); | |
2422 | } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) { | |
2423 | LASSERT(lock != NULL); | |
2424 | loi->loi_lvb = *lvb; | |
2425 | ldlm_lock_allow_match(lock); | |
2426 | CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving" | |
2427 | " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms); | |
2428 | rc = ELDLM_OK; | |
2429 | } | |
2430 | ||
2431 | if (lock != NULL) { | |
2432 | if (rc != ELDLM_OK) | |
2433 | ldlm_lock_fail_match(lock); | |
2434 | ||
2435 | LDLM_LOCK_PUT(lock); | |
2436 | } | |
2437 | } | |
2438 | EXPORT_SYMBOL(osc_update_enqueue); | |
2439 | ||
2440 | struct ptlrpc_request_set *PTLRPCD_SET = (void *)1; | |
2441 | ||
2442 | /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock | |
2443 | * from the 2nd OSC before a lock from the 1st one. This does not deadlock with | |
2444 | * other synchronous requests, however keeping some locks and trying to obtain | |
2445 | * others may take a considerable amount of time in a case of ost failure; and | |
2446 | * when other sync requests do not get released lock from a client, the client | |
2447 | * is excluded from the cluster -- such scenarious make the life difficult, so | |
2448 | * release locks just after they are obtained. */ | |
2449 | int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id, | |
2450 | __u64 *flags, ldlm_policy_data_t *policy, | |
2451 | struct ost_lvb *lvb, int kms_valid, | |
2452 | obd_enqueue_update_f upcall, void *cookie, | |
2453 | struct ldlm_enqueue_info *einfo, | |
2454 | struct lustre_handle *lockh, | |
2455 | struct ptlrpc_request_set *rqset, int async, int agl) | |
2456 | { | |
2457 | struct obd_device *obd = exp->exp_obd; | |
2458 | struct ptlrpc_request *req = NULL; | |
2459 | int intent = *flags & LDLM_FL_HAS_INTENT; | |
875332d4 | 2460 | __u64 match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY); |
d7e09d03 PT |
2461 | ldlm_mode_t mode; |
2462 | int rc; | |
d7e09d03 PT |
2463 | |
2464 | /* Filesystem lock extents are extended to page boundaries so that | |
2465 | * dealing with the page cache is a little smoother. */ | |
2466 | policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK; | |
2467 | policy->l_extent.end |= ~CFS_PAGE_MASK; | |
2468 | ||
2469 | /* | |
2470 | * kms is not valid when either object is completely fresh (so that no | |
2471 | * locks are cached), or object was evicted. In the latter case cached | |
2472 | * lock cannot be used, because it would prime inode state with | |
2473 | * potentially stale LVB. | |
2474 | */ | |
2475 | if (!kms_valid) | |
2476 | goto no_match; | |
2477 | ||
2478 | /* Next, search for already existing extent locks that will cover us */ | |
2479 | /* If we're trying to read, we also search for an existing PW lock. The | |
2480 | * VFS and page cache already protect us locally, so lots of readers/ | |
2481 | * writers can share a single PW lock. | |
2482 | * | |
2483 | * There are problems with conversion deadlocks, so instead of | |
2484 | * converting a read lock to a write lock, we'll just enqueue a new | |
2485 | * one. | |
2486 | * | |
2487 | * At some point we should cancel the read lock instead of making them | |
2488 | * send us a blocking callback, but there are problems with canceling | |
2489 | * locks out from other users right now, too. */ | |
2490 | mode = einfo->ei_mode; | |
2491 | if (einfo->ei_mode == LCK_PR) | |
2492 | mode |= LCK_PW; | |
2493 | mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id, | |
2494 | einfo->ei_type, policy, mode, lockh, 0); | |
2495 | if (mode) { | |
2496 | struct ldlm_lock *matched = ldlm_handle2lock(lockh); | |
2497 | ||
2498 | if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) { | |
2499 | /* For AGL, if enqueue RPC is sent but the lock is not | |
2500 | * granted, then skip to process this strpe. | |
2501 | * Return -ECANCELED to tell the caller. */ | |
2502 | ldlm_lock_decref(lockh, mode); | |
2503 | LDLM_LOCK_PUT(matched); | |
0a3bdb00 | 2504 | return -ECANCELED; |
d7e09d03 PT |
2505 | } else if (osc_set_lock_data_with_check(matched, einfo)) { |
2506 | *flags |= LDLM_FL_LVB_READY; | |
2507 | /* addref the lock only if not async requests and PW | |
2508 | * lock is matched whereas we asked for PR. */ | |
2509 | if (!rqset && einfo->ei_mode != mode) | |
2510 | ldlm_lock_addref(lockh, LCK_PR); | |
2511 | if (intent) { | |
2512 | /* I would like to be able to ASSERT here that | |
2513 | * rss <= kms, but I can't, for reasons which | |
2514 | * are explained in lov_enqueue() */ | |
2515 | } | |
2516 | ||
2517 | /* We already have a lock, and it's referenced. | |
2518 | * | |
2519 | * At this point, the cl_lock::cll_state is CLS_QUEUING, | |
2520 | * AGL upcall may change it to CLS_HELD directly. */ | |
2521 | (*upcall)(cookie, ELDLM_OK); | |
2522 | ||
2523 | if (einfo->ei_mode != mode) | |
2524 | ldlm_lock_decref(lockh, LCK_PW); | |
2525 | else if (rqset) | |
2526 | /* For async requests, decref the lock. */ | |
2527 | ldlm_lock_decref(lockh, einfo->ei_mode); | |
2528 | LDLM_LOCK_PUT(matched); | |
0a3bdb00 | 2529 | return ELDLM_OK; |
d7e09d03 PT |
2530 | } else { |
2531 | ldlm_lock_decref(lockh, mode); | |
2532 | LDLM_LOCK_PUT(matched); | |
2533 | } | |
2534 | } | |
2535 | ||
2536 | no_match: | |
2537 | if (intent) { | |
2538 | LIST_HEAD(cancels); | |
2539 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), | |
2540 | &RQF_LDLM_ENQUEUE_LVB); | |
2541 | if (req == NULL) | |
0a3bdb00 | 2542 | return -ENOMEM; |
d7e09d03 PT |
2543 | |
2544 | rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0); | |
2545 | if (rc) { | |
2546 | ptlrpc_request_free(req); | |
0a3bdb00 | 2547 | return rc; |
d7e09d03 PT |
2548 | } |
2549 | ||
2550 | req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER, | |
ec83e611 | 2551 | sizeof(*lvb)); |
d7e09d03 PT |
2552 | ptlrpc_request_set_replen(req); |
2553 | } | |
2554 | ||
2555 | /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */ | |
2556 | *flags &= ~LDLM_FL_BLOCK_GRANTED; | |
2557 | ||
2558 | rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb, | |
2559 | sizeof(*lvb), LVB_T_OST, lockh, async); | |
2560 | if (rqset) { | |
2561 | if (!rc) { | |
2562 | struct osc_enqueue_args *aa; | |
2563 | CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2564 | aa = ptlrpc_req_async_args(req); | |
2565 | aa->oa_ei = einfo; | |
2566 | aa->oa_exp = exp; | |
2567 | aa->oa_flags = flags; | |
2568 | aa->oa_upcall = upcall; | |
2569 | aa->oa_cookie = cookie; | |
2570 | aa->oa_lvb = lvb; | |
2571 | aa->oa_lockh = lockh; | |
2572 | aa->oa_agl = !!agl; | |
2573 | ||
2574 | req->rq_interpret_reply = | |
2575 | (ptlrpc_interpterer_t)osc_enqueue_interpret; | |
2576 | if (rqset == PTLRPCD_SET) | |
2577 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
2578 | else | |
2579 | ptlrpc_set_add_req(rqset, req); | |
2580 | } else if (intent) { | |
2581 | ptlrpc_req_finished(req); | |
2582 | } | |
0a3bdb00 | 2583 | return rc; |
d7e09d03 PT |
2584 | } |
2585 | ||
2586 | rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc); | |
2587 | if (intent) | |
2588 | ptlrpc_req_finished(req); | |
2589 | ||
0a3bdb00 | 2590 | return rc; |
d7e09d03 PT |
2591 | } |
2592 | ||
2593 | static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo, | |
2594 | struct ldlm_enqueue_info *einfo, | |
2595 | struct ptlrpc_request_set *rqset) | |
2596 | { | |
2597 | struct ldlm_res_id res_id; | |
2598 | int rc; | |
d7e09d03 PT |
2599 | |
2600 | ostid_build_res_name(&oinfo->oi_md->lsm_oi, &res_id); | |
2601 | rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy, | |
2602 | &oinfo->oi_md->lsm_oinfo[0]->loi_lvb, | |
2603 | oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid, | |
2604 | oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh, | |
2605 | rqset, rqset != NULL, 0); | |
0a3bdb00 | 2606 | return rc; |
d7e09d03 PT |
2607 | } |
2608 | ||
2609 | int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, | |
2610 | __u32 type, ldlm_policy_data_t *policy, __u32 mode, | |
875332d4 | 2611 | __u64 *flags, void *data, struct lustre_handle *lockh, |
d7e09d03 PT |
2612 | int unref) |
2613 | { | |
2614 | struct obd_device *obd = exp->exp_obd; | |
875332d4 | 2615 | __u64 lflags = *flags; |
d7e09d03 | 2616 | ldlm_mode_t rc; |
d7e09d03 PT |
2617 | |
2618 | if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH)) | |
0a3bdb00 | 2619 | return -EIO; |
d7e09d03 PT |
2620 | |
2621 | /* Filesystem lock extents are extended to page boundaries so that | |
2622 | * dealing with the page cache is a little smoother */ | |
2623 | policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK; | |
2624 | policy->l_extent.end |= ~CFS_PAGE_MASK; | |
2625 | ||
2626 | /* Next, search for already existing extent locks that will cover us */ | |
2627 | /* If we're trying to read, we also search for an existing PW lock. The | |
2628 | * VFS and page cache already protect us locally, so lots of readers/ | |
2629 | * writers can share a single PW lock. */ | |
2630 | rc = mode; | |
2631 | if (mode == LCK_PR) | |
2632 | rc |= LCK_PW; | |
2633 | rc = ldlm_lock_match(obd->obd_namespace, lflags, | |
2634 | res_id, type, policy, rc, lockh, unref); | |
2635 | if (rc) { | |
2636 | if (data != NULL) { | |
2637 | if (!osc_set_data_with_check(lockh, data)) { | |
2638 | if (!(lflags & LDLM_FL_TEST_LOCK)) | |
2639 | ldlm_lock_decref(lockh, rc); | |
0a3bdb00 | 2640 | return 0; |
d7e09d03 PT |
2641 | } |
2642 | } | |
2643 | if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) { | |
2644 | ldlm_lock_addref(lockh, LCK_PR); | |
2645 | ldlm_lock_decref(lockh, LCK_PW); | |
2646 | } | |
0a3bdb00 | 2647 | return rc; |
d7e09d03 | 2648 | } |
0a3bdb00 | 2649 | return rc; |
d7e09d03 PT |
2650 | } |
2651 | ||
2652 | int osc_cancel_base(struct lustre_handle *lockh, __u32 mode) | |
2653 | { | |
d7e09d03 PT |
2654 | if (unlikely(mode == LCK_GROUP)) |
2655 | ldlm_lock_decref_and_cancel(lockh, mode); | |
2656 | else | |
2657 | ldlm_lock_decref(lockh, mode); | |
2658 | ||
0a3bdb00 | 2659 | return 0; |
d7e09d03 PT |
2660 | } |
2661 | ||
2662 | static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md, | |
2663 | __u32 mode, struct lustre_handle *lockh) | |
2664 | { | |
0a3bdb00 | 2665 | return osc_cancel_base(lockh, mode); |
d7e09d03 PT |
2666 | } |
2667 | ||
2668 | static int osc_cancel_unused(struct obd_export *exp, | |
2669 | struct lov_stripe_md *lsm, | |
2670 | ldlm_cancel_flags_t flags, | |
2671 | void *opaque) | |
2672 | { | |
2673 | struct obd_device *obd = class_exp2obd(exp); | |
2674 | struct ldlm_res_id res_id, *resp = NULL; | |
2675 | ||
2676 | if (lsm != NULL) { | |
2677 | ostid_build_res_name(&lsm->lsm_oi, &res_id); | |
2678 | resp = &res_id; | |
2679 | } | |
2680 | ||
2681 | return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque); | |
2682 | } | |
2683 | ||
2684 | static int osc_statfs_interpret(const struct lu_env *env, | |
2685 | struct ptlrpc_request *req, | |
2686 | struct osc_async_args *aa, int rc) | |
2687 | { | |
2688 | struct obd_statfs *msfs; | |
d7e09d03 PT |
2689 | |
2690 | if (rc == -EBADR) | |
2691 | /* The request has in fact never been sent | |
2692 | * due to issues at a higher level (LOV). | |
2693 | * Exit immediately since the caller is | |
2694 | * aware of the problem and takes care | |
2695 | * of the clean up */ | |
0a3bdb00 | 2696 | return rc; |
d7e09d03 PT |
2697 | |
2698 | if ((rc == -ENOTCONN || rc == -EAGAIN) && | |
2699 | (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY)) | |
2700 | GOTO(out, rc = 0); | |
2701 | ||
2702 | if (rc != 0) | |
2703 | GOTO(out, rc); | |
2704 | ||
2705 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
2706 | if (msfs == NULL) { | |
2707 | GOTO(out, rc = -EPROTO); | |
2708 | } | |
2709 | ||
2710 | *aa->aa_oi->oi_osfs = *msfs; | |
2711 | out: | |
2712 | rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc); | |
0a3bdb00 | 2713 | return rc; |
d7e09d03 PT |
2714 | } |
2715 | ||
2716 | static int osc_statfs_async(struct obd_export *exp, | |
2717 | struct obd_info *oinfo, __u64 max_age, | |
2718 | struct ptlrpc_request_set *rqset) | |
2719 | { | |
2720 | struct obd_device *obd = class_exp2obd(exp); | |
2721 | struct ptlrpc_request *req; | |
2722 | struct osc_async_args *aa; | |
2723 | int rc; | |
d7e09d03 PT |
2724 | |
2725 | /* We could possibly pass max_age in the request (as an absolute | |
2726 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2727 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2728 | * during mount that would help a bit). Having relative timestamps | |
2729 | * is not so great if request processing is slow, while absolute | |
2730 | * timestamps are not ideal because they need time synchronization. */ | |
2731 | req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS); | |
2732 | if (req == NULL) | |
0a3bdb00 | 2733 | return -ENOMEM; |
d7e09d03 PT |
2734 | |
2735 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2736 | if (rc) { | |
2737 | ptlrpc_request_free(req); | |
0a3bdb00 | 2738 | return rc; |
d7e09d03 PT |
2739 | } |
2740 | ptlrpc_request_set_replen(req); | |
2741 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2742 | ptlrpc_at_set_req_timeout(req); | |
2743 | ||
2744 | if (oinfo->oi_flags & OBD_STATFS_NODELAY) { | |
2745 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2746 | req->rq_no_resend = 1; | |
2747 | req->rq_no_delay = 1; | |
2748 | } | |
2749 | ||
2750 | req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret; | |
2751 | CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args)); | |
2752 | aa = ptlrpc_req_async_args(req); | |
2753 | aa->aa_oi = oinfo; | |
2754 | ||
2755 | ptlrpc_set_add_req(rqset, req); | |
0a3bdb00 | 2756 | return 0; |
d7e09d03 PT |
2757 | } |
2758 | ||
2759 | static int osc_statfs(const struct lu_env *env, struct obd_export *exp, | |
2760 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
2761 | { | |
2762 | struct obd_device *obd = class_exp2obd(exp); | |
2763 | struct obd_statfs *msfs; | |
2764 | struct ptlrpc_request *req; | |
2765 | struct obd_import *imp = NULL; | |
2766 | int rc; | |
d7e09d03 PT |
2767 | |
2768 | /*Since the request might also come from lprocfs, so we need | |
2769 | *sync this with client_disconnect_export Bug15684*/ | |
2770 | down_read(&obd->u.cli.cl_sem); | |
2771 | if (obd->u.cli.cl_import) | |
2772 | imp = class_import_get(obd->u.cli.cl_import); | |
2773 | up_read(&obd->u.cli.cl_sem); | |
2774 | if (!imp) | |
0a3bdb00 | 2775 | return -ENODEV; |
d7e09d03 PT |
2776 | |
2777 | /* We could possibly pass max_age in the request (as an absolute | |
2778 | * timestamp or a "seconds.usec ago") so the target can avoid doing | |
2779 | * extra calls into the filesystem if that isn't necessary (e.g. | |
2780 | * during mount that would help a bit). Having relative timestamps | |
2781 | * is not so great if request processing is slow, while absolute | |
2782 | * timestamps are not ideal because they need time synchronization. */ | |
2783 | req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS); | |
2784 | ||
2785 | class_import_put(imp); | |
2786 | ||
2787 | if (req == NULL) | |
0a3bdb00 | 2788 | return -ENOMEM; |
d7e09d03 PT |
2789 | |
2790 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS); | |
2791 | if (rc) { | |
2792 | ptlrpc_request_free(req); | |
0a3bdb00 | 2793 | return rc; |
d7e09d03 PT |
2794 | } |
2795 | ptlrpc_request_set_replen(req); | |
2796 | req->rq_request_portal = OST_CREATE_PORTAL; | |
2797 | ptlrpc_at_set_req_timeout(req); | |
2798 | ||
2799 | if (flags & OBD_STATFS_NODELAY) { | |
2800 | /* procfs requests not want stat in wait for avoid deadlock */ | |
2801 | req->rq_no_resend = 1; | |
2802 | req->rq_no_delay = 1; | |
2803 | } | |
2804 | ||
2805 | rc = ptlrpc_queue_wait(req); | |
2806 | if (rc) | |
2807 | GOTO(out, rc); | |
2808 | ||
2809 | msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); | |
2810 | if (msfs == NULL) { | |
2811 | GOTO(out, rc = -EPROTO); | |
2812 | } | |
2813 | ||
2814 | *osfs = *msfs; | |
2815 | ||
d7e09d03 PT |
2816 | out: |
2817 | ptlrpc_req_finished(req); | |
2818 | return rc; | |
2819 | } | |
2820 | ||
2821 | /* Retrieve object striping information. | |
2822 | * | |
2823 | * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating | |
2824 | * the maximum number of OST indices which will fit in the user buffer. | |
2825 | * lmm_magic must be LOV_MAGIC (we only use 1 slot here). | |
2826 | */ | |
2827 | static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump) | |
2828 | { | |
2829 | /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */ | |
2830 | struct lov_user_md_v3 lum, *lumk; | |
2831 | struct lov_user_ost_data_v1 *lmm_objects; | |
2832 | int rc = 0, lum_size; | |
d7e09d03 PT |
2833 | |
2834 | if (!lsm) | |
0a3bdb00 | 2835 | return -ENODATA; |
d7e09d03 PT |
2836 | |
2837 | /* we only need the header part from user space to get lmm_magic and | |
2838 | * lmm_stripe_count, (the header part is common to v1 and v3) */ | |
2839 | lum_size = sizeof(struct lov_user_md_v1); | |
2840 | if (copy_from_user(&lum, lump, lum_size)) | |
0a3bdb00 | 2841 | return -EFAULT; |
d7e09d03 PT |
2842 | |
2843 | if ((lum.lmm_magic != LOV_USER_MAGIC_V1) && | |
2844 | (lum.lmm_magic != LOV_USER_MAGIC_V3)) | |
0a3bdb00 | 2845 | return -EINVAL; |
d7e09d03 PT |
2846 | |
2847 | /* lov_user_md_vX and lov_mds_md_vX must have the same size */ | |
2848 | LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1)); | |
2849 | LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3)); | |
2850 | LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0])); | |
2851 | ||
2852 | /* we can use lov_mds_md_size() to compute lum_size | |
2853 | * because lov_user_md_vX and lov_mds_md_vX have the same size */ | |
2854 | if (lum.lmm_stripe_count > 0) { | |
2855 | lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic); | |
2856 | OBD_ALLOC(lumk, lum_size); | |
2857 | if (!lumk) | |
0a3bdb00 | 2858 | return -ENOMEM; |
d7e09d03 PT |
2859 | |
2860 | if (lum.lmm_magic == LOV_USER_MAGIC_V1) | |
2861 | lmm_objects = | |
2862 | &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]); | |
2863 | else | |
2864 | lmm_objects = &(lumk->lmm_objects[0]); | |
2865 | lmm_objects->l_ost_oi = lsm->lsm_oi; | |
2866 | } else { | |
2867 | lum_size = lov_mds_md_size(0, lum.lmm_magic); | |
2868 | lumk = &lum; | |
2869 | } | |
2870 | ||
2871 | lumk->lmm_oi = lsm->lsm_oi; | |
2872 | lumk->lmm_stripe_count = 1; | |
2873 | ||
2874 | if (copy_to_user(lump, lumk, lum_size)) | |
2875 | rc = -EFAULT; | |
2876 | ||
2877 | if (lumk != &lum) | |
2878 | OBD_FREE(lumk, lum_size); | |
2879 | ||
0a3bdb00 | 2880 | return rc; |
d7e09d03 PT |
2881 | } |
2882 | ||
2883 | ||
2884 | static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len, | |
2885 | void *karg, void *uarg) | |
2886 | { | |
2887 | struct obd_device *obd = exp->exp_obd; | |
2888 | struct obd_ioctl_data *data = karg; | |
2889 | int err = 0; | |
d7e09d03 PT |
2890 | |
2891 | if (!try_module_get(THIS_MODULE)) { | |
2892 | CERROR("Can't get module. Is it alive?"); | |
2893 | return -EINVAL; | |
2894 | } | |
2895 | switch (cmd) { | |
2896 | case OBD_IOC_LOV_GET_CONFIG: { | |
2897 | char *buf; | |
2898 | struct lov_desc *desc; | |
2899 | struct obd_uuid uuid; | |
2900 | ||
2901 | buf = NULL; | |
2902 | len = 0; | |
2903 | if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) | |
2904 | GOTO(out, err = -EINVAL); | |
2905 | ||
2906 | data = (struct obd_ioctl_data *)buf; | |
2907 | ||
2908 | if (sizeof(*desc) > data->ioc_inllen1) { | |
2909 | obd_ioctl_freedata(buf, len); | |
2910 | GOTO(out, err = -EINVAL); | |
2911 | } | |
2912 | ||
2913 | if (data->ioc_inllen2 < sizeof(uuid)) { | |
2914 | obd_ioctl_freedata(buf, len); | |
2915 | GOTO(out, err = -EINVAL); | |
2916 | } | |
2917 | ||
2918 | desc = (struct lov_desc *)data->ioc_inlbuf1; | |
2919 | desc->ld_tgt_count = 1; | |
2920 | desc->ld_active_tgt_count = 1; | |
2921 | desc->ld_default_stripe_count = 1; | |
2922 | desc->ld_default_stripe_size = 0; | |
2923 | desc->ld_default_stripe_offset = 0; | |
2924 | desc->ld_pattern = 0; | |
2925 | memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid)); | |
2926 | ||
2927 | memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid)); | |
2928 | ||
2929 | err = copy_to_user((void *)uarg, buf, len); | |
2930 | if (err) | |
2931 | err = -EFAULT; | |
2932 | obd_ioctl_freedata(buf, len); | |
2933 | GOTO(out, err); | |
2934 | } | |
2935 | case LL_IOC_LOV_SETSTRIPE: | |
2936 | err = obd_alloc_memmd(exp, karg); | |
2937 | if (err > 0) | |
2938 | err = 0; | |
2939 | GOTO(out, err); | |
2940 | case LL_IOC_LOV_GETSTRIPE: | |
2941 | err = osc_getstripe(karg, uarg); | |
2942 | GOTO(out, err); | |
2943 | case OBD_IOC_CLIENT_RECOVER: | |
2944 | err = ptlrpc_recover_import(obd->u.cli.cl_import, | |
2945 | data->ioc_inlbuf1, 0); | |
2946 | if (err > 0) | |
2947 | err = 0; | |
2948 | GOTO(out, err); | |
2949 | case IOC_OSC_SET_ACTIVE: | |
2950 | err = ptlrpc_set_import_active(obd->u.cli.cl_import, | |
2951 | data->ioc_offset); | |
2952 | GOTO(out, err); | |
2953 | case OBD_IOC_POLL_QUOTACHECK: | |
2954 | err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg); | |
2955 | GOTO(out, err); | |
2956 | case OBD_IOC_PING_TARGET: | |
2957 | err = ptlrpc_obd_ping(obd); | |
2958 | GOTO(out, err); | |
2959 | default: | |
2960 | CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n", | |
2961 | cmd, current_comm()); | |
2962 | GOTO(out, err = -ENOTTY); | |
2963 | } | |
2964 | out: | |
2965 | module_put(THIS_MODULE); | |
2966 | return err; | |
2967 | } | |
2968 | ||
2969 | static int osc_get_info(const struct lu_env *env, struct obd_export *exp, | |
2970 | obd_count keylen, void *key, __u32 *vallen, void *val, | |
2971 | struct lov_stripe_md *lsm) | |
2972 | { | |
d7e09d03 | 2973 | if (!vallen || !val) |
0a3bdb00 | 2974 | return -EFAULT; |
d7e09d03 PT |
2975 | |
2976 | if (KEY_IS(KEY_LOCK_TO_STRIPE)) { | |
2977 | __u32 *stripe = val; | |
2978 | *vallen = sizeof(*stripe); | |
2979 | *stripe = 0; | |
0a3bdb00 | 2980 | return 0; |
d7e09d03 PT |
2981 | } else if (KEY_IS(KEY_LAST_ID)) { |
2982 | struct ptlrpc_request *req; | |
2983 | obd_id *reply; | |
2984 | char *tmp; | |
2985 | int rc; | |
2986 | ||
2987 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), | |
2988 | &RQF_OST_GET_INFO_LAST_ID); | |
2989 | if (req == NULL) | |
0a3bdb00 | 2990 | return -ENOMEM; |
d7e09d03 PT |
2991 | |
2992 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
2993 | RCL_CLIENT, keylen); | |
2994 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
2995 | if (rc) { | |
2996 | ptlrpc_request_free(req); | |
0a3bdb00 | 2997 | return rc; |
d7e09d03 PT |
2998 | } |
2999 | ||
3000 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
3001 | memcpy(tmp, key, keylen); | |
3002 | ||
3003 | req->rq_no_delay = req->rq_no_resend = 1; | |
3004 | ptlrpc_request_set_replen(req); | |
3005 | rc = ptlrpc_queue_wait(req); | |
3006 | if (rc) | |
3007 | GOTO(out, rc); | |
3008 | ||
3009 | reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID); | |
3010 | if (reply == NULL) | |
3011 | GOTO(out, rc = -EPROTO); | |
3012 | ||
3013 | *((obd_id *)val) = *reply; | |
3014 | out: | |
3015 | ptlrpc_req_finished(req); | |
0a3bdb00 | 3016 | return rc; |
d7e09d03 | 3017 | } else if (KEY_IS(KEY_FIEMAP)) { |
9d865439 AB |
3018 | struct ll_fiemap_info_key *fm_key = |
3019 | (struct ll_fiemap_info_key *)key; | |
3020 | struct ldlm_res_id res_id; | |
3021 | ldlm_policy_data_t policy; | |
3022 | struct lustre_handle lockh; | |
3023 | ldlm_mode_t mode = 0; | |
3024 | struct ptlrpc_request *req; | |
3025 | struct ll_user_fiemap *reply; | |
3026 | char *tmp; | |
3027 | int rc; | |
3028 | ||
3029 | if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC)) | |
3030 | goto skip_locking; | |
3031 | ||
3032 | policy.l_extent.start = fm_key->fiemap.fm_start & | |
3033 | CFS_PAGE_MASK; | |
3034 | ||
3035 | if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <= | |
3036 | fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1) | |
3037 | policy.l_extent.end = OBD_OBJECT_EOF; | |
3038 | else | |
3039 | policy.l_extent.end = (fm_key->fiemap.fm_start + | |
3040 | fm_key->fiemap.fm_length + | |
3041 | PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK; | |
3042 | ||
3043 | ostid_build_res_name(&fm_key->oa.o_oi, &res_id); | |
3044 | mode = ldlm_lock_match(exp->exp_obd->obd_namespace, | |
3045 | LDLM_FL_BLOCK_GRANTED | | |
3046 | LDLM_FL_LVB_READY, | |
3047 | &res_id, LDLM_EXTENT, &policy, | |
3048 | LCK_PR | LCK_PW, &lockh, 0); | |
3049 | if (mode) { /* lock is cached on client */ | |
3050 | if (mode != LCK_PR) { | |
3051 | ldlm_lock_addref(&lockh, LCK_PR); | |
3052 | ldlm_lock_decref(&lockh, LCK_PW); | |
3053 | } | |
3054 | } else { /* no cached lock, needs acquire lock on server side */ | |
3055 | fm_key->oa.o_valid |= OBD_MD_FLFLAGS; | |
3056 | fm_key->oa.o_flags |= OBD_FL_SRVLOCK; | |
3057 | } | |
d7e09d03 | 3058 | |
9d865439 | 3059 | skip_locking: |
d7e09d03 PT |
3060 | req = ptlrpc_request_alloc(class_exp2cliimp(exp), |
3061 | &RQF_OST_GET_INFO_FIEMAP); | |
3062 | if (req == NULL) | |
9d865439 | 3063 | GOTO(drop_lock, rc = -ENOMEM); |
d7e09d03 PT |
3064 | |
3065 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY, | |
3066 | RCL_CLIENT, keylen); | |
3067 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
3068 | RCL_CLIENT, *vallen); | |
3069 | req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL, | |
3070 | RCL_SERVER, *vallen); | |
3071 | ||
3072 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); | |
3073 | if (rc) { | |
3074 | ptlrpc_request_free(req); | |
9d865439 | 3075 | GOTO(drop_lock, rc); |
d7e09d03 PT |
3076 | } |
3077 | ||
3078 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY); | |
3079 | memcpy(tmp, key, keylen); | |
3080 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
3081 | memcpy(tmp, val, *vallen); | |
3082 | ||
3083 | ptlrpc_request_set_replen(req); | |
3084 | rc = ptlrpc_queue_wait(req); | |
3085 | if (rc) | |
9d865439 | 3086 | GOTO(fini_req, rc); |
d7e09d03 PT |
3087 | |
3088 | reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL); | |
3089 | if (reply == NULL) | |
9d865439 | 3090 | GOTO(fini_req, rc = -EPROTO); |
d7e09d03 PT |
3091 | |
3092 | memcpy(val, reply, *vallen); | |
9d865439 | 3093 | fini_req: |
d7e09d03 | 3094 | ptlrpc_req_finished(req); |
9d865439 AB |
3095 | drop_lock: |
3096 | if (mode) | |
3097 | ldlm_lock_decref(&lockh, LCK_PR); | |
0a3bdb00 | 3098 | return rc; |
d7e09d03 PT |
3099 | } |
3100 | ||
0a3bdb00 | 3101 | return -EINVAL; |
d7e09d03 PT |
3102 | } |
3103 | ||
3104 | static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
3105 | obd_count keylen, void *key, obd_count vallen, | |
3106 | void *val, struct ptlrpc_request_set *set) | |
3107 | { | |
3108 | struct ptlrpc_request *req; | |
3109 | struct obd_device *obd = exp->exp_obd; | |
3110 | struct obd_import *imp = class_exp2cliimp(exp); | |
3111 | char *tmp; | |
3112 | int rc; | |
d7e09d03 PT |
3113 | |
3114 | OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10); | |
3115 | ||
3116 | if (KEY_IS(KEY_CHECKSUM)) { | |
3117 | if (vallen != sizeof(int)) | |
0a3bdb00 | 3118 | return -EINVAL; |
d7e09d03 | 3119 | exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0; |
0a3bdb00 | 3120 | return 0; |
d7e09d03 PT |
3121 | } |
3122 | ||
3123 | if (KEY_IS(KEY_SPTLRPC_CONF)) { | |
3124 | sptlrpc_conf_client_adapt(obd); | |
0a3bdb00 | 3125 | return 0; |
d7e09d03 PT |
3126 | } |
3127 | ||
3128 | if (KEY_IS(KEY_FLUSH_CTX)) { | |
3129 | sptlrpc_import_flush_my_ctx(imp); | |
0a3bdb00 | 3130 | return 0; |
d7e09d03 PT |
3131 | } |
3132 | ||
3133 | if (KEY_IS(KEY_CACHE_SET)) { | |
3134 | struct client_obd *cli = &obd->u.cli; | |
3135 | ||
3136 | LASSERT(cli->cl_cache == NULL); /* only once */ | |
3137 | cli->cl_cache = (struct cl_client_cache *)val; | |
3138 | atomic_inc(&cli->cl_cache->ccc_users); | |
3139 | cli->cl_lru_left = &cli->cl_cache->ccc_lru_left; | |
3140 | ||
3141 | /* add this osc into entity list */ | |
3142 | LASSERT(list_empty(&cli->cl_lru_osc)); | |
3143 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
3144 | list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru); | |
3145 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
3146 | ||
0a3bdb00 | 3147 | return 0; |
d7e09d03 PT |
3148 | } |
3149 | ||
3150 | if (KEY_IS(KEY_CACHE_LRU_SHRINK)) { | |
3151 | struct client_obd *cli = &obd->u.cli; | |
3152 | int nr = atomic_read(&cli->cl_lru_in_list) >> 1; | |
3153 | int target = *(int *)val; | |
3154 | ||
3155 | nr = osc_lru_shrink(cli, min(nr, target)); | |
3156 | *(int *)val -= nr; | |
0a3bdb00 | 3157 | return 0; |
d7e09d03 PT |
3158 | } |
3159 | ||
3160 | if (!set && !KEY_IS(KEY_GRANT_SHRINK)) | |
0a3bdb00 | 3161 | return -EINVAL; |
d7e09d03 PT |
3162 | |
3163 | /* We pass all other commands directly to OST. Since nobody calls osc | |
3164 | methods directly and everybody is supposed to go through LOV, we | |
3165 | assume lov checked invalid values for us. | |
3166 | The only recognised values so far are evict_by_nid and mds_conn. | |
3167 | Even if something bad goes through, we'd get a -EINVAL from OST | |
3168 | anyway. */ | |
3169 | ||
3170 | req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ? | |
3171 | &RQF_OST_SET_GRANT_INFO : | |
3172 | &RQF_OBD_SET_INFO); | |
3173 | if (req == NULL) | |
0a3bdb00 | 3174 | return -ENOMEM; |
d7e09d03 PT |
3175 | |
3176 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, | |
3177 | RCL_CLIENT, keylen); | |
3178 | if (!KEY_IS(KEY_GRANT_SHRINK)) | |
3179 | req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL, | |
3180 | RCL_CLIENT, vallen); | |
3181 | rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO); | |
3182 | if (rc) { | |
3183 | ptlrpc_request_free(req); | |
0a3bdb00 | 3184 | return rc; |
d7e09d03 PT |
3185 | } |
3186 | ||
3187 | tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); | |
3188 | memcpy(tmp, key, keylen); | |
3189 | tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ? | |
3190 | &RMF_OST_BODY : | |
3191 | &RMF_SETINFO_VAL); | |
3192 | memcpy(tmp, val, vallen); | |
3193 | ||
3194 | if (KEY_IS(KEY_GRANT_SHRINK)) { | |
3195 | struct osc_grant_args *aa; | |
3196 | struct obdo *oa; | |
3197 | ||
3198 | CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args)); | |
3199 | aa = ptlrpc_req_async_args(req); | |
3200 | OBDO_ALLOC(oa); | |
3201 | if (!oa) { | |
3202 | ptlrpc_req_finished(req); | |
0a3bdb00 | 3203 | return -ENOMEM; |
d7e09d03 PT |
3204 | } |
3205 | *oa = ((struct ost_body *)val)->oa; | |
3206 | aa->aa_oa = oa; | |
3207 | req->rq_interpret_reply = osc_shrink_grant_interpret; | |
3208 | } | |
3209 | ||
3210 | ptlrpc_request_set_replen(req); | |
3211 | if (!KEY_IS(KEY_GRANT_SHRINK)) { | |
3212 | LASSERT(set != NULL); | |
3213 | ptlrpc_set_add_req(set, req); | |
3214 | ptlrpc_check_set(NULL, set); | |
3215 | } else | |
3216 | ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); | |
3217 | ||
0a3bdb00 | 3218 | return 0; |
d7e09d03 PT |
3219 | } |
3220 | ||
3221 | ||
3222 | static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg, | |
3223 | struct obd_device *disk_obd, int *index) | |
3224 | { | |
3225 | /* this code is not supposed to be used with LOD/OSP | |
3226 | * to be removed soon */ | |
3227 | LBUG(); | |
3228 | return 0; | |
3229 | } | |
3230 | ||
3231 | static int osc_llog_finish(struct obd_device *obd, int count) | |
3232 | { | |
3233 | struct llog_ctxt *ctxt; | |
3234 | ||
d7e09d03 PT |
3235 | ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT); |
3236 | if (ctxt) { | |
3237 | llog_cat_close(NULL, ctxt->loc_handle); | |
3238 | llog_cleanup(NULL, ctxt); | |
3239 | } | |
3240 | ||
3241 | ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT); | |
3242 | if (ctxt) | |
3243 | llog_cleanup(NULL, ctxt); | |
0a3bdb00 | 3244 | return 0; |
d7e09d03 PT |
3245 | } |
3246 | ||
3247 | static int osc_reconnect(const struct lu_env *env, | |
3248 | struct obd_export *exp, struct obd_device *obd, | |
3249 | struct obd_uuid *cluuid, | |
3250 | struct obd_connect_data *data, | |
3251 | void *localdata) | |
3252 | { | |
3253 | struct client_obd *cli = &obd->u.cli; | |
3254 | ||
3255 | if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) { | |
3256 | long lost_grant; | |
3257 | ||
3258 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
3259 | data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?: | |
3260 | 2 * cli_brw_size(obd); | |
3261 | lost_grant = cli->cl_lost_grant; | |
3262 | cli->cl_lost_grant = 0; | |
3263 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
3264 | ||
3265 | CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d" | |
3266 | " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags, | |
3267 | data->ocd_version, data->ocd_grant, lost_grant); | |
3268 | } | |
3269 | ||
0a3bdb00 | 3270 | return 0; |
d7e09d03 PT |
3271 | } |
3272 | ||
3273 | static int osc_disconnect(struct obd_export *exp) | |
3274 | { | |
3275 | struct obd_device *obd = class_exp2obd(exp); | |
3276 | struct llog_ctxt *ctxt; | |
3277 | int rc; | |
3278 | ||
3279 | ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT); | |
3280 | if (ctxt) { | |
3281 | if (obd->u.cli.cl_conn_count == 1) { | |
3282 | /* Flush any remaining cancel messages out to the | |
3283 | * target */ | |
3284 | llog_sync(ctxt, exp, 0); | |
3285 | } | |
3286 | llog_ctxt_put(ctxt); | |
3287 | } else { | |
3288 | CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n", | |
3289 | obd); | |
3290 | } | |
3291 | ||
3292 | rc = client_disconnect_export(exp); | |
3293 | /** | |
3294 | * Initially we put del_shrink_grant before disconnect_export, but it | |
3295 | * causes the following problem if setup (connect) and cleanup | |
3296 | * (disconnect) are tangled together. | |
3297 | * connect p1 disconnect p2 | |
3298 | * ptlrpc_connect_import | |
3299 | * ............... class_manual_cleanup | |
3300 | * osc_disconnect | |
3301 | * del_shrink_grant | |
3302 | * ptlrpc_connect_interrupt | |
3303 | * init_grant_shrink | |
3304 | * add this client to shrink list | |
3305 | * cleanup_osc | |
3306 | * Bang! pinger trigger the shrink. | |
3307 | * So the osc should be disconnected from the shrink list, after we | |
3308 | * are sure the import has been destroyed. BUG18662 | |
3309 | */ | |
3310 | if (obd->u.cli.cl_import == NULL) | |
3311 | osc_del_shrink_grant(&obd->u.cli); | |
3312 | return rc; | |
3313 | } | |
3314 | ||
3315 | static int osc_import_event(struct obd_device *obd, | |
3316 | struct obd_import *imp, | |
3317 | enum obd_import_event event) | |
3318 | { | |
3319 | struct client_obd *cli; | |
3320 | int rc = 0; | |
3321 | ||
d7e09d03 PT |
3322 | LASSERT(imp->imp_obd == obd); |
3323 | ||
3324 | switch (event) { | |
3325 | case IMP_EVENT_DISCON: { | |
3326 | cli = &obd->u.cli; | |
3327 | client_obd_list_lock(&cli->cl_loi_list_lock); | |
3328 | cli->cl_avail_grant = 0; | |
3329 | cli->cl_lost_grant = 0; | |
3330 | client_obd_list_unlock(&cli->cl_loi_list_lock); | |
3331 | break; | |
3332 | } | |
3333 | case IMP_EVENT_INACTIVE: { | |
3334 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL); | |
3335 | break; | |
3336 | } | |
3337 | case IMP_EVENT_INVALIDATE: { | |
3338 | struct ldlm_namespace *ns = obd->obd_namespace; | |
3339 | struct lu_env *env; | |
3340 | int refcheck; | |
3341 | ||
3342 | env = cl_env_get(&refcheck); | |
3343 | if (!IS_ERR(env)) { | |
3344 | /* Reset grants */ | |
3345 | cli = &obd->u.cli; | |
3346 | /* all pages go to failing rpcs due to the invalid | |
3347 | * import */ | |
3348 | osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND); | |
3349 | ||
3350 | ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY); | |
3351 | cl_env_put(env, &refcheck); | |
3352 | } else | |
3353 | rc = PTR_ERR(env); | |
3354 | break; | |
3355 | } | |
3356 | case IMP_EVENT_ACTIVE: { | |
3357 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL); | |
3358 | break; | |
3359 | } | |
3360 | case IMP_EVENT_OCD: { | |
3361 | struct obd_connect_data *ocd = &imp->imp_connect_data; | |
3362 | ||
3363 | if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT) | |
3364 | osc_init_grant(&obd->u.cli, ocd); | |
3365 | ||
3366 | /* See bug 7198 */ | |
3367 | if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL) | |
3368 | imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL; | |
3369 | ||
3370 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL); | |
3371 | break; | |
3372 | } | |
3373 | case IMP_EVENT_DEACTIVATE: { | |
3374 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL); | |
3375 | break; | |
3376 | } | |
3377 | case IMP_EVENT_ACTIVATE: { | |
3378 | rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL); | |
3379 | break; | |
3380 | } | |
3381 | default: | |
3382 | CERROR("Unknown import event %d\n", event); | |
3383 | LBUG(); | |
3384 | } | |
0a3bdb00 | 3385 | return rc; |
d7e09d03 PT |
3386 | } |
3387 | ||
3388 | /** | |
3389 | * Determine whether the lock can be canceled before replaying the lock | |
3390 | * during recovery, see bug16774 for detailed information. | |
3391 | * | |
3392 | * \retval zero the lock can't be canceled | |
3393 | * \retval other ok to cancel | |
3394 | */ | |
3395 | static int osc_cancel_for_recovery(struct ldlm_lock *lock) | |
3396 | { | |
3397 | check_res_locked(lock->l_resource); | |
3398 | ||
3399 | /* | |
3400 | * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR. | |
3401 | * | |
3402 | * XXX as a future improvement, we can also cancel unused write lock | |
3403 | * if it doesn't have dirty data and active mmaps. | |
3404 | */ | |
3405 | if (lock->l_resource->lr_type == LDLM_EXTENT && | |
3406 | (lock->l_granted_mode == LCK_PR || | |
3407 | lock->l_granted_mode == LCK_CR) && | |
3408 | (osc_dlm_lock_pageref(lock) == 0)) | |
0a3bdb00 | 3409 | return 1; |
d7e09d03 | 3410 | |
0a3bdb00 | 3411 | return 0; |
d7e09d03 PT |
3412 | } |
3413 | ||
3414 | static int brw_queue_work(const struct lu_env *env, void *data) | |
3415 | { | |
3416 | struct client_obd *cli = data; | |
3417 | ||
3418 | CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli); | |
3419 | ||
3420 | osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME); | |
0a3bdb00 | 3421 | return 0; |
d7e09d03 PT |
3422 | } |
3423 | ||
3424 | int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3425 | { | |
3426 | struct lprocfs_static_vars lvars = { 0 }; | |
3427 | struct client_obd *cli = &obd->u.cli; | |
3428 | void *handler; | |
3429 | int rc; | |
d7e09d03 PT |
3430 | |
3431 | rc = ptlrpcd_addref(); | |
3432 | if (rc) | |
0a3bdb00 | 3433 | return rc; |
d7e09d03 PT |
3434 | |
3435 | rc = client_obd_setup(obd, lcfg); | |
3436 | if (rc) | |
3437 | GOTO(out_ptlrpcd, rc); | |
3438 | ||
3439 | handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli); | |
3440 | if (IS_ERR(handler)) | |
3441 | GOTO(out_client_setup, rc = PTR_ERR(handler)); | |
3442 | cli->cl_writeback_work = handler; | |
3443 | ||
3444 | rc = osc_quota_setup(obd); | |
3445 | if (rc) | |
3446 | GOTO(out_ptlrpcd_work, rc); | |
3447 | ||
3448 | cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL; | |
3449 | lprocfs_osc_init_vars(&lvars); | |
3450 | if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) { | |
3451 | lproc_osc_attach_seqstat(obd); | |
3452 | sptlrpc_lprocfs_cliobd_attach(obd); | |
3453 | ptlrpc_lprocfs_register_obd(obd); | |
3454 | } | |
3455 | ||
3456 | /* We need to allocate a few requests more, because | |
3457 | * brw_interpret tries to create new requests before freeing | |
3458 | * previous ones, Ideally we want to have 2x max_rpcs_in_flight | |
3459 | * reserved, but I'm afraid that might be too much wasted RAM | |
3460 | * in fact, so 2 is just my guess and still should work. */ | |
3461 | cli->cl_import->imp_rq_pool = | |
3462 | ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2, | |
3463 | OST_MAXREQSIZE, | |
3464 | ptlrpc_add_rqs_to_pool); | |
3465 | ||
3466 | INIT_LIST_HEAD(&cli->cl_grant_shrink_list); | |
3467 | ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery); | |
0a3bdb00 | 3468 | return rc; |
d7e09d03 PT |
3469 | |
3470 | out_ptlrpcd_work: | |
3471 | ptlrpcd_destroy_work(handler); | |
3472 | out_client_setup: | |
3473 | client_obd_cleanup(obd); | |
3474 | out_ptlrpcd: | |
3475 | ptlrpcd_decref(); | |
0a3bdb00 | 3476 | return rc; |
d7e09d03 PT |
3477 | } |
3478 | ||
3479 | static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
3480 | { | |
3481 | int rc = 0; | |
d7e09d03 PT |
3482 | |
3483 | switch (stage) { | |
3484 | case OBD_CLEANUP_EARLY: { | |
3485 | struct obd_import *imp; | |
3486 | imp = obd->u.cli.cl_import; | |
3487 | CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name); | |
3488 | /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */ | |
3489 | ptlrpc_deactivate_import(imp); | |
3490 | spin_lock(&imp->imp_lock); | |
3491 | imp->imp_pingable = 0; | |
3492 | spin_unlock(&imp->imp_lock); | |
3493 | break; | |
3494 | } | |
3495 | case OBD_CLEANUP_EXPORTS: { | |
3496 | struct client_obd *cli = &obd->u.cli; | |
3497 | /* LU-464 | |
3498 | * for echo client, export may be on zombie list, wait for | |
3499 | * zombie thread to cull it, because cli.cl_import will be | |
3500 | * cleared in client_disconnect_export(): | |
3501 | * class_export_destroy() -> obd_cleanup() -> | |
3502 | * echo_device_free() -> echo_client_cleanup() -> | |
3503 | * obd_disconnect() -> osc_disconnect() -> | |
3504 | * client_disconnect_export() | |
3505 | */ | |
3506 | obd_zombie_barrier(); | |
3507 | if (cli->cl_writeback_work) { | |
3508 | ptlrpcd_destroy_work(cli->cl_writeback_work); | |
3509 | cli->cl_writeback_work = NULL; | |
3510 | } | |
3511 | obd_cleanup_client_import(obd); | |
3512 | ptlrpc_lprocfs_unregister_obd(obd); | |
3513 | lprocfs_obd_cleanup(obd); | |
3514 | rc = obd_llog_finish(obd, 0); | |
3515 | if (rc != 0) | |
3516 | CERROR("failed to cleanup llogging subsystems\n"); | |
3517 | break; | |
3518 | } | |
3519 | } | |
0a3bdb00 | 3520 | return rc; |
d7e09d03 PT |
3521 | } |
3522 | ||
3523 | int osc_cleanup(struct obd_device *obd) | |
3524 | { | |
3525 | struct client_obd *cli = &obd->u.cli; | |
3526 | int rc; | |
3527 | ||
d7e09d03 PT |
3528 | /* lru cleanup */ |
3529 | if (cli->cl_cache != NULL) { | |
3530 | LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0); | |
3531 | spin_lock(&cli->cl_cache->ccc_lru_lock); | |
3532 | list_del_init(&cli->cl_lru_osc); | |
3533 | spin_unlock(&cli->cl_cache->ccc_lru_lock); | |
3534 | cli->cl_lru_left = NULL; | |
3535 | atomic_dec(&cli->cl_cache->ccc_users); | |
3536 | cli->cl_cache = NULL; | |
3537 | } | |
3538 | ||
3539 | /* free memory of osc quota cache */ | |
3540 | osc_quota_cleanup(obd); | |
3541 | ||
3542 | rc = client_obd_cleanup(obd); | |
3543 | ||
3544 | ptlrpcd_decref(); | |
0a3bdb00 | 3545 | return rc; |
d7e09d03 PT |
3546 | } |
3547 | ||
3548 | int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg) | |
3549 | { | |
3550 | struct lprocfs_static_vars lvars = { 0 }; | |
3551 | int rc = 0; | |
3552 | ||
3553 | lprocfs_osc_init_vars(&lvars); | |
3554 | ||
3555 | switch (lcfg->lcfg_command) { | |
3556 | default: | |
3557 | rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars, | |
3558 | lcfg, obd); | |
3559 | if (rc > 0) | |
3560 | rc = 0; | |
3561 | break; | |
3562 | } | |
3563 | ||
3564 | return(rc); | |
3565 | } | |
3566 | ||
3567 | static int osc_process_config(struct obd_device *obd, obd_count len, void *buf) | |
3568 | { | |
3569 | return osc_process_config_base(obd, buf); | |
3570 | } | |
3571 | ||
3572 | struct obd_ops osc_obd_ops = { | |
3573 | .o_owner = THIS_MODULE, | |
3574 | .o_setup = osc_setup, | |
3575 | .o_precleanup = osc_precleanup, | |
3576 | .o_cleanup = osc_cleanup, | |
3577 | .o_add_conn = client_import_add_conn, | |
3578 | .o_del_conn = client_import_del_conn, | |
3579 | .o_connect = client_connect_import, | |
3580 | .o_reconnect = osc_reconnect, | |
3581 | .o_disconnect = osc_disconnect, | |
3582 | .o_statfs = osc_statfs, | |
3583 | .o_statfs_async = osc_statfs_async, | |
3584 | .o_packmd = osc_packmd, | |
3585 | .o_unpackmd = osc_unpackmd, | |
3586 | .o_create = osc_create, | |
3587 | .o_destroy = osc_destroy, | |
3588 | .o_getattr = osc_getattr, | |
3589 | .o_getattr_async = osc_getattr_async, | |
3590 | .o_setattr = osc_setattr, | |
3591 | .o_setattr_async = osc_setattr_async, | |
3592 | .o_brw = osc_brw, | |
3593 | .o_punch = osc_punch, | |
3594 | .o_sync = osc_sync, | |
3595 | .o_enqueue = osc_enqueue, | |
3596 | .o_change_cbdata = osc_change_cbdata, | |
3597 | .o_find_cbdata = osc_find_cbdata, | |
3598 | .o_cancel = osc_cancel, | |
3599 | .o_cancel_unused = osc_cancel_unused, | |
3600 | .o_iocontrol = osc_iocontrol, | |
3601 | .o_get_info = osc_get_info, | |
3602 | .o_set_info_async = osc_set_info_async, | |
3603 | .o_import_event = osc_import_event, | |
3604 | .o_llog_init = osc_llog_init, | |
3605 | .o_llog_finish = osc_llog_finish, | |
3606 | .o_process_config = osc_process_config, | |
3607 | .o_quotactl = osc_quotactl, | |
3608 | .o_quotacheck = osc_quotacheck, | |
3609 | }; | |
3610 | ||
3611 | extern struct lu_kmem_descr osc_caches[]; | |
3612 | extern spinlock_t osc_ast_guard; | |
3613 | extern struct lock_class_key osc_ast_guard_class; | |
3614 | ||
3615 | int __init osc_init(void) | |
3616 | { | |
3617 | struct lprocfs_static_vars lvars = { 0 }; | |
3618 | int rc; | |
d7e09d03 PT |
3619 | |
3620 | /* print an address of _any_ initialized kernel symbol from this | |
3621 | * module, to allow debugging with gdb that doesn't support data | |
3622 | * symbols from modules.*/ | |
3623 | CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches); | |
3624 | ||
3625 | rc = lu_kmem_init(osc_caches); | |
a55e0f44 | 3626 | if (rc) |
0a3bdb00 | 3627 | return rc; |
d7e09d03 PT |
3628 | |
3629 | lprocfs_osc_init_vars(&lvars); | |
3630 | ||
3631 | rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars, | |
3632 | LUSTRE_OSC_NAME, &osc_device_type); | |
3633 | if (rc) { | |
3634 | lu_kmem_fini(osc_caches); | |
0a3bdb00 | 3635 | return rc; |
d7e09d03 PT |
3636 | } |
3637 | ||
3638 | spin_lock_init(&osc_ast_guard); | |
3639 | lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class); | |
3640 | ||
0a3bdb00 | 3641 | return rc; |
d7e09d03 PT |
3642 | } |
3643 | ||
3644 | static void /*__exit*/ osc_exit(void) | |
3645 | { | |
3646 | class_unregister_type(LUSTRE_OSC_NAME); | |
3647 | lu_kmem_fini(osc_caches); | |
3648 | } | |
3649 | ||
3650 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
3651 | MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)"); | |
3652 | MODULE_LICENSE("GPL"); | |
6960736c | 3653 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
d7e09d03 | 3654 | |
6960736c GKH |
3655 | module_init(osc_init); |
3656 | module_exit(osc_exit); |