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staging/lustre: get rid of seqno_t and mdsno_t typedefs
[deliverable/linux.git] / drivers / staging / lustre / lustre / include / obd.h
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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) 2007, 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#ifndef __OBD_H
38#define __OBD_H
39
1accaadf 40#include "linux/obd.h"
d7e09d03
PT		 41
42#define IOC_OSC_TYPE 'h'
43#define IOC_OSC_MIN_NR 20
44#define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
45#define IOC_OSC_MAX_NR 50
46
47#define IOC_MDC_TYPE 'i'
48#define IOC_MDC_MIN_NR 20
49#define IOC_MDC_MAX_NR 50
50
1accaadf
GKH		 51#include "lustre/lustre_idl.h"
52#include "lustre_lib.h"
1accaadf
GKH		 53#include "lu_ref.h"
54#include "lustre_export.h"
55#include "lustre_fid.h"
56#include "lustre_fld.h"
57#include "lustre_capa.h"
d7e09d03 58
d7e09d03
PT		 59#define MAX_OBD_DEVICES 8192
60
61struct osc_async_rc {
62 int ar_rc;
63 int ar_force_sync;
64 __u64 ar_min_xid;
65};
66
67struct lov_oinfo { /* per-stripe data structure */
68 struct ost_id loi_oi; /* object ID/Sequence on the target OST */
69 int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */
70 int loi_ost_gen; /* generation of this loi_ost_idx */
71
72 unsigned long loi_kms_valid:1;
73 __u64 loi_kms; /* known minimum size */
74 struct ost_lvb loi_lvb;
75 struct osc_async_rc loi_ar;
76};
77
78static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms)
79{
80 oinfo->loi_kms = kms;
81 oinfo->loi_kms_valid = 1;
82}
83
84static inline void loi_init(struct lov_oinfo *loi)
85{
86}
87
88struct lov_stripe_md {
89 atomic_t lsm_refc;
90 spinlock_t lsm_lock;
91 pid_t lsm_lock_owner; /* debugging */
92
93 /* maximum possible file size, might change as OSTs status changes,
94 * e.g. disconnected, deactivated */
95 __u64 lsm_maxbytes;
96 struct {
97 /* Public members. */
98 struct ost_id lw_object_oi; /* lov object id/seq */
99
100 /* LOV-private members start here -- only for use in lov/. */
101 __u32 lw_magic;
102 __u32 lw_stripe_size; /* size of the stripe */
103 __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */
104 __u16 lw_stripe_count; /* number of objects being striped over */
105 __u16 lw_layout_gen; /* generation of the layout */
106 char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */
107 } lsm_wire;
108
109 struct lov_oinfo *lsm_oinfo[0];
110};
111
112#define lsm_oi lsm_wire.lw_object_oi
113#define lsm_magic lsm_wire.lw_magic
114#define lsm_layout_gen lsm_wire.lw_layout_gen
115#define lsm_stripe_size lsm_wire.lw_stripe_size
116#define lsm_pattern lsm_wire.lw_pattern
117#define lsm_stripe_count lsm_wire.lw_stripe_count
118#define lsm_pool_name lsm_wire.lw_pool_name
119
5dd16419
JX		 120static inline bool lsm_is_released(struct lov_stripe_md *lsm)
121{
122 return !!(lsm->lsm_pattern & LOV_PATTERN_F_RELEASED);
123}
124
125static inline bool lsm_has_objects(struct lov_stripe_md *lsm)
126{
127 if (lsm == NULL)
128 return false;
129 if (lsm_is_released(lsm))
130 return false;
131 return true;
132}
133
081b7265
JH		 134static inline int lov_stripe_md_size(unsigned int stripe_count)
135{
136 struct lov_stripe_md lsm;
137
138 return sizeof(lsm) + stripe_count * sizeof(lsm.lsm_oinfo[0]);
139}
140
d7e09d03
PT		 141struct obd_info;
142
143typedef int (*obd_enqueue_update_f)(void *cookie, int rc);
144
145/* obd info for a particular level (lov, osc). */
146struct obd_info {
147 /* Lock policy. It keeps an extent which is specific for a particular
148 * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy,
149 * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */
150 ldlm_policy_data_t oi_policy;
151 /* Flags used for set request specific flags:
152 - while lock handling, the flags obtained on the enqueue
153 request are set here.
154 - while stats, the flags used for control delay/resend.
155 - while setattr, the flags used for distinguish punch operation
156 */
157 __u64 oi_flags;
158 /* Lock handle specific for every OSC lock. */
159 struct lustre_handle *oi_lockh;
160 /* lsm data specific for every OSC. */
161 struct lov_stripe_md *oi_md;
162 /* obdo data specific for every OSC, if needed at all. */
163 struct obdo *oi_oa;
164 /* statfs data specific for every OSC, if needed at all. */
165 struct obd_statfs *oi_osfs;
166 /* An update callback which is called to update some data on upper
17891183 167 * level. E.g. it is used for update lsm->lsm_oinfo at every received
d7e09d03
PT		 168 * request in osc level for enqueue requests. It is also possible to
169 * update some caller data from LOV layer if needed. */
170 obd_enqueue_update_f oi_cb_up;
171 /* oss capability, its type is obd_capa in client to avoid copy.
172 * in contrary its type is lustre_capa in OSS. */
173 void *oi_capa;
174 /* transfer jobid from ost_sync() to filter_sync()... */
175 char *oi_jobid;
176};
177
178/* compare all relevant fields. */
179static inline int lov_stripe_md_cmp(struct lov_stripe_md *m1,
180 struct lov_stripe_md *m2)
181{
182 /*
183 * ->lsm_wire contains padding, but it should be zeroed out during
184 * allocation.
185 */
ec83e611 186 return memcmp(&m1->lsm_wire, &m2->lsm_wire, sizeof(m1->lsm_wire));
d7e09d03
PT		 187}
188
189static inline int lov_lum_lsm_cmp(struct lov_user_md *lum,
190 struct lov_stripe_md *lsm)
191{
192 if (lsm->lsm_magic != lum->lmm_magic)
193 return 1;
194 if ((lsm->lsm_stripe_count != 0) && (lum->lmm_stripe_count != 0) &&
195 (lsm->lsm_stripe_count != lum->lmm_stripe_count))
196 return 2;
197 if ((lsm->lsm_stripe_size != 0) && (lum->lmm_stripe_size != 0) &&
198 (lsm->lsm_stripe_size != lum->lmm_stripe_size))
199 return 3;
200 if ((lsm->lsm_pattern != 0) && (lum->lmm_pattern != 0) &&
201 (lsm->lsm_pattern != lum->lmm_pattern))
202 return 4;
203 if ((lsm->lsm_magic == LOV_MAGIC_V3) &&
204 (strncmp(lsm->lsm_pool_name,
205 ((struct lov_user_md_v3 *)lum)->lmm_pool_name,
206 LOV_MAXPOOLNAME) != 0))
207 return 5;
208 return 0;
209}
210
211static inline int lov_lum_swab_if_needed(struct lov_user_md_v3 *lumv3,
212 int *lmm_magic,
213 struct lov_user_md *lum)
214{
215 if (lum && copy_from_user(lumv3, lum,sizeof(struct lov_user_md_v1)))
216 return -EFAULT;
217
218 *lmm_magic = lumv3->lmm_magic;
219
220 if (*lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
221 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lumv3);
222 *lmm_magic = LOV_USER_MAGIC_V1;
223 } else if (*lmm_magic == LOV_USER_MAGIC_V3) {
224 if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3)))
225 return -EFAULT;
226 } else if (*lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
227 if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3)))
228 return -EFAULT;
229 lustre_swab_lov_user_md_v3(lumv3);
230 *lmm_magic = LOV_USER_MAGIC_V3;
231 } else if (*lmm_magic != LOV_USER_MAGIC_V1) {
232 CDEBUG(D_IOCTL,
233 "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
234 *lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3);
235 return -EINVAL;
236 }
237 return 0;
238}
239
240void lov_stripe_lock(struct lov_stripe_md *md);
241void lov_stripe_unlock(struct lov_stripe_md *md);
242
243struct obd_type {
244 struct list_head typ_chain;
245 struct obd_ops *typ_dt_ops;
246 struct md_ops *typ_md_ops;
b59fe845 247 struct proc_dir_entry *typ_procroot;
d7e09d03
PT		 248 char *typ_name;
249 int typ_refcnt;
250 struct lu_device_type *typ_lu;
251 spinlock_t obd_type_lock;
252};
253
254struct brw_page {
255 obd_off off;
256 struct page *pg;
257 int count;
258 obd_flag flag;
259};
260
d7e09d03
PT		 261/* llog contexts */
262enum llog_ctxt_id {
263 LLOG_CONFIG_ORIG_CTXT = 0,
264 LLOG_CONFIG_REPL_CTXT,
265 LLOG_MDS_OST_ORIG_CTXT,
266 LLOG_MDS_OST_REPL_CTXT,
267 LLOG_SIZE_ORIG_CTXT,
268 LLOG_SIZE_REPL_CTXT,
269 LLOG_RD1_ORIG_CTXT,
270 LLOG_RD1_REPL_CTXT,
271 LLOG_TEST_ORIG_CTXT,
272 LLOG_TEST_REPL_CTXT,
273 LLOG_LOVEA_ORIG_CTXT,
274 LLOG_LOVEA_REPL_CTXT,
99a92265 275 LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */
276 LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */
277 LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */
278 LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */
d7e09d03
PT		 279 LLOG_MAX_CTXTS
280};
281
d7e09d03
PT		 282struct timeout_item {
283 enum timeout_event ti_event;
a649ad1d 284 unsigned long ti_timeout;
d7e09d03
PT		 285 timeout_cb_t ti_cb;
286 void *ti_cb_data;
287 struct list_head ti_obd_list;
288 struct list_head ti_chain;
289};
290
291#define OSC_MAX_RIF_DEFAULT 8
292#define MDS_OSC_MAX_RIF_DEFAULT 50
293#define OSC_MAX_RIF_MAX 256
294#define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
295#define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
296#define OSC_DEFAULT_RESENDS 10
297
298/* possible values for fo_sync_lock_cancel */
299enum {
300 NEVER_SYNC_ON_CANCEL = 0,
301 BLOCKING_SYNC_ON_CANCEL = 1,
302 ALWAYS_SYNC_ON_CANCEL = 2,
303 NUM_SYNC_ON_CANCEL_STATES
304};
305
306#define MDC_MAX_RIF_DEFAULT 8
307#define MDC_MAX_RIF_MAX 512
308
309struct mdc_rpc_lock;
310struct obd_import;
311struct client_obd {
312 struct rw_semaphore cl_sem;
313 struct obd_uuid cl_target_uuid;
314 struct obd_import *cl_import; /* ptlrpc connection state */
315 int cl_conn_count;
316 /* max_mds_easize is purely a performance thing so we don't have to
317 * call obd_size_diskmd() all the time. */
44779340
BB		 318 int cl_default_mds_easize;
319 int cl_max_mds_easize;
320 int cl_default_mds_cookiesize;
321 int cl_max_mds_cookiesize;
d7e09d03
PT		 322
323 enum lustre_sec_part cl_sp_me;
324 enum lustre_sec_part cl_sp_to;
325 struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
326
327 /* the grant values are protected by loi_list_lock below */
328 long cl_dirty; /* all _dirty_ in bytes */
329 long cl_dirty_max; /* allowed w/o rpc */
330 long cl_dirty_transit; /* dirty synchronous */
331 long cl_avail_grant; /* bytes of credit for ost */
332 long cl_lost_grant; /* lost credits (trunc) */
333
334 /* since we allocate grant by blocks, we don't know how many grant will
335 * be used to add a page into cache. As a solution, we reserve maximum
336 * grant before trying to dirty a page and unreserve the rest.
337 * See osc_{reserve|unreserve}_grant for details. */
338 long cl_reserved_grant;
339 struct list_head cl_cache_waiters; /* waiting for cache/grant */
a649ad1d 340 unsigned long cl_next_shrink_grant; /* jiffies */
d7e09d03
PT		 341 struct list_head cl_grant_shrink_list; /* Timeout event list */
342 int cl_grant_shrink_interval; /* seconds */
343
344 /* A chunk is an optimal size used by osc_extent to determine
345 * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */
346 int cl_chunkbits;
347 int cl_chunk;
348 int cl_extent_tax; /* extent overhead, by bytes */
349
350 /* keep track of objects that have lois that contain pages which
351 * have been queued for async brw. this lock also protects the
352 * lists of osc_client_pages that hang off of the loi */
353 /*
354 * ->cl_loi_list_lock protects consistency of
355 * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
356 * ->ap_completion() call-backs are executed under this lock. As we
357 * cannot guarantee that these call-backs never block on all platforms
358 * (as a matter of fact they do block on Mac OS X), type of
359 * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
360 * and blocking mutex on Mac OS X. (Alternative is to make this lock
361 * blocking everywhere, but we don't want to slow down fast-path of
362 * our main platform.)
363 *
364 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
365 * with client_obd_list_{un,}lock() and
366 * client_obd_list_lock_{init,done}() functions.
367 *
368 * NB by Jinshan: though field names are still _loi_, but actually
369 * osc_object{}s are in the list.
370 */
371 client_obd_lock_t cl_loi_list_lock;
372 struct list_head cl_loi_ready_list;
373 struct list_head cl_loi_hp_ready_list;
374 struct list_head cl_loi_write_list;
375 struct list_head cl_loi_read_list;
376 int cl_r_in_flight;
377 int cl_w_in_flight;
378 /* just a sum of the loi/lop pending numbers to be exported by /proc */
379 atomic_t cl_pending_w_pages;
380 atomic_t cl_pending_r_pages;
381 __u32 cl_max_pages_per_rpc;
382 int cl_max_rpcs_in_flight;
383 struct obd_histogram cl_read_rpc_hist;
384 struct obd_histogram cl_write_rpc_hist;
385 struct obd_histogram cl_read_page_hist;
386 struct obd_histogram cl_write_page_hist;
387 struct obd_histogram cl_read_offset_hist;
388 struct obd_histogram cl_write_offset_hist;
389
390 /* lru for osc caching pages */
391 struct cl_client_cache *cl_cache;
392 struct list_head cl_lru_osc; /* member of cl_cache->ccc_lru */
393 atomic_t *cl_lru_left;
394 atomic_t cl_lru_busy;
395 atomic_t cl_lru_shrinkers;
396 atomic_t cl_lru_in_list;
397 struct list_head cl_lru_list; /* lru page list */
398 client_obd_lock_t cl_lru_list_lock; /* page list protector */
399
400 /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
401 atomic_t cl_destroy_in_flight;
402 wait_queue_head_t cl_destroy_waitq;
403
404 struct mdc_rpc_lock *cl_rpc_lock;
405 struct mdc_rpc_lock *cl_close_lock;
406
407 /* mgc datastruct */
6246dab1 408 struct mutex cl_mgc_mutex;
aa4e3c8a
MP		 409 struct local_oid_storage *cl_mgc_los;
410 struct dt_object *cl_mgc_configs_dir;
d7e09d03
PT		 411 atomic_t cl_mgc_refcount;
412 struct obd_export *cl_mgc_mgsexp;
413
414 /* checksumming for data sent over the network */
415 unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */
416 /* supported checksum types that are worked out at connect time */
417 __u32 cl_supp_cksum_types;
418 /* checksum algorithm to be used */
419 cksum_type_t cl_cksum_type;
420
421 /* also protected by the poorly named _loi_list_lock lock above */
422 struct osc_async_rc cl_ar;
423
424 /* used by quotacheck when the servers are older than 2.4 */
425 int cl_qchk_stat; /* quotacheck stat of the peer */
426#define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
427#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
428#warning "please consider removing quotacheck compatibility code"
429#endif
430
431 /* sequence manager */
432 struct lu_client_seq *cl_seq;
433
434 atomic_t cl_resends; /* resend count */
435
436 /* ptlrpc work for writeback in ptlrpcd context */
437 void *cl_writeback_work;
438 /* hash tables for osc_quota_info */
6da6eabe 439 struct cfs_hash *cl_quota_hash[MAXQUOTAS];
d7e09d03
PT		 440};
441#define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
442
443struct obd_id_info {
444 __u32 idx;
445 obd_id *data;
446};
447
d7e09d03
PT		 448struct echo_client_obd {
449 struct obd_export *ec_exp; /* the local connection to osc/lov */
450 spinlock_t ec_lock;
451 struct list_head ec_objects;
452 struct list_head ec_locks;
453 int ec_nstripes;
454 __u64 ec_unique;
455};
456
457struct lov_qos_oss {
458 struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */
459 struct list_head lqo_oss_list; /* link to lov_qos */
460 __u64 lqo_bavail; /* total bytes avail on OSS */
461 __u64 lqo_penalty; /* current penalty */
462 __u64 lqo_penalty_per_obj;/* penalty decrease every obj*/
463 time_t lqo_used; /* last used time, seconds */
464 __u32 lqo_ost_count; /* number of osts on this oss */
465};
466
467struct ltd_qos {
468 struct lov_qos_oss *ltq_oss; /* oss info */
469 __u64 ltq_penalty; /* current penalty */
470 __u64 ltq_penalty_per_obj; /* penalty decrease every obj*/
471 __u64 ltq_weight; /* net weighting */
472 time_t ltq_used; /* last used time, seconds */
473 unsigned int ltq_usable:1; /* usable for striping */
474};
475
476/* Generic subset of OSTs */
477struct ost_pool {
478 __u32 *op_array; /* array of index of
479 lov_obd->lov_tgts */
480 unsigned int op_count; /* number of OSTs in the array */
481 unsigned int op_size; /* allocated size of lp_array */
482 struct rw_semaphore op_rw_sem; /* to protect ost_pool use */
483};
484
485/* Round-robin allocator data */
486struct lov_qos_rr {
487 __u32 lqr_start_idx; /* start index of new inode */
488 __u32 lqr_offset_idx; /* aliasing for start_idx */
489 int lqr_start_count; /* reseed counter */
490 struct ost_pool lqr_pool; /* round-robin optimized list */
491 unsigned long lqr_dirty:1; /* recalc round-robin list */
492};
493
494/* allow statfs data caching for 1 second */
495#define OBD_STATFS_CACHE_SECONDS 1
496
497struct lov_statfs_data {
498 struct obd_info lsd_oi;
499 struct obd_statfs lsd_statfs;
500};
501/* Stripe placement optimization */
502struct lov_qos {
503 struct list_head lq_oss_list; /* list of OSSs that targets use */
504 struct rw_semaphore lq_rw_sem;
505 __u32 lq_active_oss_count;
506 unsigned int lq_prio_free; /* priority for free space */
507 unsigned int lq_threshold_rr;/* priority for rr */
508 struct lov_qos_rr lq_rr; /* round robin qos data */
509 unsigned long lq_dirty:1, /* recalc qos data */
510 lq_same_space:1,/* the ost's all have approx.
511 the same space avail */
512 lq_reset:1, /* zero current penalties */
513 lq_statfs_in_progress:1; /* statfs op in
514 progress */
515 /* qos statfs data */
516 struct lov_statfs_data *lq_statfs_data;
517 wait_queue_head_t lq_statfs_waitq; /* waitqueue to notify statfs
518 * requests completion */
519};
520
521struct lov_tgt_desc {
522 struct list_head ltd_kill;
523 struct obd_uuid ltd_uuid;
524 struct obd_device *ltd_obd;
525 struct obd_export *ltd_exp;
526 struct ltd_qos ltd_qos; /* qos info per target */
527 __u32 ltd_gen;
528 __u32 ltd_index; /* index in lov_obd->tgts */
529 unsigned long ltd_active:1,/* is this target up for requests */
530 ltd_activate:1,/* should target be activated */
531 ltd_reap:1; /* should this target be deleted */
532};
533
534/* Pool metadata */
535#define pool_tgt_size(_p) _p->pool_obds.op_size
536#define pool_tgt_count(_p) _p->pool_obds.op_count
537#define pool_tgt_array(_p) _p->pool_obds.op_array
538#define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem
539
540struct pool_desc {
541 char pool_name[LOV_MAXPOOLNAME + 1]; /* name of pool */
542 struct ost_pool pool_obds; /* pool members */
543 atomic_t pool_refcount; /* pool ref. counter */
544 struct lov_qos_rr pool_rr; /* round robin qos */
545 struct hlist_node pool_hash; /* access by poolname */
546 struct list_head pool_list; /* serial access */
b59fe845 547 struct proc_dir_entry *pool_proc_entry; /* file in /proc */
d7e09d03
PT		 548 struct obd_device *pool_lobd; /* obd of the lov/lod to which
549 * this pool belongs */
550};
551
552struct lov_obd {
553 struct lov_desc desc;
554 struct lov_tgt_desc **lov_tgts; /* sparse array */
555 struct ost_pool lov_packed; /* all OSTs in a packed
556 array */
557 struct mutex lov_lock;
558 struct obd_connect_data lov_ocd;
559 atomic_t lov_refcount;
560 __u32 lov_tgt_count; /* how many OBD's */
561 __u32 lov_active_tgt_count; /* how many active */
562 __u32 lov_death_row;/* tgts scheduled to be deleted */
563 __u32 lov_tgt_size; /* size of tgts array */
564 int lov_connects;
565 int lov_pool_count;
6da6eabe 566 struct cfs_hash *lov_pools_hash_body; /* used for key access */
d7e09d03 567 struct list_head lov_pool_list; /* used for sequential access */
b59fe845 568 struct proc_dir_entry *lov_pool_proc_entry;
d7e09d03
PT		 569 enum lustre_sec_part lov_sp_me;
570
c52f69c5 571 /* Cached LRU pages from upper layer */
d7e09d03
PT		 572 void *lov_cache;
573
574 struct rw_semaphore lov_notify_lock;
575};
576
577struct lmv_tgt_desc {
578 struct obd_uuid ltd_uuid;
579 struct obd_export *ltd_exp;
580 int ltd_idx;
581 struct mutex ltd_fid_mutex;
582 unsigned long ltd_active:1; /* target up for requests */
583};
584
585enum placement_policy {
586 PLACEMENT_CHAR_POLICY = 0,
587 PLACEMENT_NID_POLICY = 1,
588 PLACEMENT_INVAL_POLICY = 2,
589 PLACEMENT_MAX_POLICY
590};
591
592typedef enum placement_policy placement_policy_t;
593
594struct lmv_obd {
595 int refcount;
596 struct lu_client_fld lmv_fld;
597 spinlock_t lmv_lock;
598 placement_policy_t lmv_placement;
599 struct lmv_desc desc;
600 struct obd_uuid cluuid;
601 struct obd_export *exp;
602
603 struct mutex init_mutex;
604 int connected;
605 int max_easize;
606 int max_def_easize;
607 int max_cookiesize;
44779340 608 int max_def_cookiesize;
d7e09d03
PT		 609 int server_timeout;
610
611 int tgts_size; /* size of tgts array */
612 struct lmv_tgt_desc **tgts;
613
614 struct obd_connect_data conn_data;
615};
616
617struct niobuf_local {
618 __u64 lnb_file_offset;
619 __u32 lnb_page_offset;
620 __u32 len;
621 __u32 flags;
622 struct page *page;
623 struct dentry *dentry;
624 int lnb_grant_used;
625 int rc;
626};
627
628#define LUSTRE_FLD_NAME "fld"
629#define LUSTRE_SEQ_NAME "seq"
630
631#define LUSTRE_MDD_NAME "mdd"
632#define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs"
633#define LUSTRE_OSD_ZFS_NAME "osd-zfs"
634#define LUSTRE_VVP_NAME "vvp"
635#define LUSTRE_LMV_NAME "lmv"
636#define LUSTRE_SLP_NAME "slp"
637#define LUSTRE_LOD_NAME "lod"
638#define LUSTRE_OSP_NAME "osp"
639#define LUSTRE_LWP_NAME "lwp"
640
641/* obd device type names */
642 /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
643#define LUSTRE_MDS_NAME "mds"
644#define LUSTRE_MDT_NAME "mdt"
645#define LUSTRE_MDC_NAME "mdc"
646#define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
647#define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
648#define LUSTRE_OSC_NAME "osc"
649#define LUSTRE_LOV_NAME "lov"
650#define LUSTRE_MGS_NAME "mgs"
651#define LUSTRE_MGC_NAME "mgc"
652
653#define LUSTRE_ECHO_NAME "obdecho"
654#define LUSTRE_ECHO_CLIENT_NAME "echo_client"
655#define LUSTRE_QMT_NAME "qmt"
656
657/* Constant obd names (post-rename) */
658#define LUSTRE_MDS_OBDNAME "MDS"
659#define LUSTRE_OSS_OBDNAME "OSS"
660#define LUSTRE_MGS_OBDNAME "MGS"
661#define LUSTRE_MGC_OBDNAME "MGC"
662
663static inline int is_osp_on_mdt(char *name)
664{
665 char *ptr;
666
667 ptr = strrchr(name, '-');
668 if (ptr == NULL) {
669 CERROR("%s is not a obdname\n", name);
670 return 0;
671 }
672
673 /* 1.8 OSC/OSP name on MDT is fsname-OSTxxxx-osc */
674 if (strncmp(ptr + 1, "osc", 3) == 0)
675 return 1;
676
677 if (strncmp(ptr + 1, "MDT", 3) != 0)
678 return 0;
679
680 while (*(--ptr) != '-' && ptr != name);
681
682 if (ptr == name)
683 return 0;
684
685 if (strncmp(ptr + 1, LUSTRE_OSP_NAME, strlen(LUSTRE_OSP_NAME)) != 0 &&
686 strncmp(ptr + 1, LUSTRE_OSC_NAME, strlen(LUSTRE_OSC_NAME)) != 0)
687 return 0;
688
689 return 1;
690}
691
692/* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
693#define N_LOCAL_TEMP_PAGE 0x10000000
694
695struct obd_trans_info {
696 __u64 oti_transno;
697 __u64 oti_xid;
698 /* Only used on the server side for tracking acks. */
699 struct oti_req_ack_lock {
700 struct lustre_handle lock;
701 __u32 mode;
702 } oti_ack_locks[4];
703 void *oti_handle;
704 struct llog_cookie oti_onecookie;
705 struct llog_cookie *oti_logcookies;
706 int oti_numcookies;
707 /** synchronous write is needed */
708 unsigned long oti_sync_write:1;
709
710 /* initial thread handling transaction */
711 struct ptlrpc_thread * oti_thread;
712 __u32 oti_conn_cnt;
713 /** VBR: versions */
714 __u64 oti_pre_version;
715 /** JobID */
716 char *oti_jobid;
717
718 struct obd_uuid *oti_ost_uuid;
719};
720
721static inline void oti_init(struct obd_trans_info *oti,
722 struct ptlrpc_request *req)
723{
724 if (oti == NULL)
725 return;
726 memset(oti, 0, sizeof(*oti));
727
728 if (req == NULL)
729 return;
730
731 oti->oti_xid = req->rq_xid;
732 /** VBR: take versions from request */
733 if (req->rq_reqmsg != NULL &&
734 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
735 __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
736 oti->oti_pre_version = pre_version ? pre_version[0] : 0;
737 oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg);
738 }
739
740 /** called from mds_create_objects */
741 if (req->rq_repmsg != NULL)
742 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
743 oti->oti_thread = req->rq_svc_thread;
744 if (req->rq_reqmsg != NULL)
745 oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
746}
747
748static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
749{
750 if (!oti)
751 return;
752
753 if (num_cookies == 1)
754 oti->oti_logcookies = &oti->oti_onecookie;
755 else
756 OBD_ALLOC_LARGE(oti->oti_logcookies,
757 num_cookies * sizeof(oti->oti_onecookie));
758
759 oti->oti_numcookies = num_cookies;
760}
761
762static inline void oti_free_cookies(struct obd_trans_info *oti)
763{
764 if (!oti || !oti->oti_logcookies)
765 return;
766
767 if (oti->oti_logcookies == &oti->oti_onecookie)
768 LASSERT(oti->oti_numcookies == 1);
769 else
770 OBD_FREE_LARGE(oti->oti_logcookies,
771 oti->oti_numcookies*sizeof(oti->oti_onecookie));
772 oti->oti_logcookies = NULL;
773 oti->oti_numcookies = 0;
774}
775
776/*
777 * Events signalled through obd_notify() upcall-chain.
778 */
779enum obd_notify_event {
780 /* target added */
781 OBD_NOTIFY_CREATE,
782 /* Device connect start */
783 OBD_NOTIFY_CONNECT,
784 /* Device activated */
785 OBD_NOTIFY_ACTIVE,
786 /* Device deactivated */
787 OBD_NOTIFY_INACTIVE,
788 /* Device disconnected */
789 OBD_NOTIFY_DISCON,
790 /* Connect data for import were changed */
791 OBD_NOTIFY_OCD,
792 /* Sync request */
793 OBD_NOTIFY_SYNC_NONBLOCK,
794 OBD_NOTIFY_SYNC,
795 /* Configuration event */
796 OBD_NOTIFY_CONFIG,
797 /* Administratively deactivate/activate event */
798 OBD_NOTIFY_DEACTIVATE,
799 OBD_NOTIFY_ACTIVATE
800};
801
d7e09d03
PT		 802/*
803 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
804 * and liblustre being main examples).
805 */
806struct obd_notify_upcall {
807 int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
808 enum obd_notify_event ev, void *owner, void *data);
809 /* Opaque datum supplied by upper layer listener */
810 void *onu_owner;
811};
812
813struct target_recovery_data {
814 svc_handler_t trd_recovery_handler;
815 pid_t trd_processing_task;
816 struct completion trd_starting;
817 struct completion trd_finishing;
818};
819
820struct obd_llog_group {
821 int olg_seq;
822 struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS];
823 wait_queue_head_t olg_waitq;
824 spinlock_t olg_lock;
825 struct mutex olg_cat_processing;
826};
827
828/* corresponds to one of the obd's */
829#define OBD_DEVICE_MAGIC 0XAB5CD6EF
830#define OBD_DEV_BY_DEVNAME 0xffffd0de
831
832struct obd_device {
833 struct obd_type *obd_type;
834 __u32 obd_magic;
835
836 /* common and UUID name of this device */
837 char obd_name[MAX_OBD_NAME];
838 struct obd_uuid obd_uuid;
839
840 struct lu_device *obd_lu_dev;
841
842 int obd_minor;
843 /* bitfield modification is protected by obd_dev_lock */
844 unsigned long obd_attached:1, /* finished attach */
845 obd_set_up:1, /* finished setup */
846 obd_recovering:1, /* there are recoverable clients */
847 obd_abort_recovery:1,/* recovery expired */
848 obd_version_recov:1, /* obd uses version checking */
849 obd_replayable:1, /* recovery is enabled; inform clients */
850 obd_no_transno:1, /* no committed-transno notification */
851 obd_no_recov:1, /* fail instead of retry messages */
852 obd_stopping:1, /* started cleanup */
853 obd_starting:1, /* started setup */
854 obd_force:1, /* cleanup with > 0 obd refcount */
855 obd_fail:1, /* cleanup with failover */
856 obd_async_recov:1, /* allow asynchronous orphan cleanup */
857 obd_no_conn:1, /* deny new connections */
858 obd_inactive:1, /* device active/inactive
859 * (for /proc/status only!!) */
860 obd_no_ir:1, /* no imperative recovery. */
861 obd_process_conf:1; /* device is processing mgs config */
862 /* use separate field as it is set in interrupt to don't mess with
863 * protection of other bits using _bh lock */
864 unsigned long obd_recovery_expired:1;
865 /* uuid-export hash body */
6da6eabe 866 struct cfs_hash *obd_uuid_hash;
d7e09d03 867 /* nid-export hash body */
6da6eabe 868 struct cfs_hash *obd_nid_hash;
d7e09d03 869 /* nid stats body */
6da6eabe 870 struct cfs_hash *obd_nid_stats_hash;
d7e09d03
PT		 871 struct list_head obd_nid_stats;
872 atomic_t obd_refcount;
873 wait_queue_head_t obd_refcount_waitq;
874 struct list_head obd_exports;
875 struct list_head obd_unlinked_exports;
876 struct list_head obd_delayed_exports;
877 int obd_num_exports;
878 spinlock_t obd_nid_lock;
879 struct ldlm_namespace *obd_namespace;
880 struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
881 /* a spinlock is OK for what we do now, may need a semaphore later */
882 spinlock_t obd_dev_lock; /* protect OBD bitfield above */
883 struct mutex obd_dev_mutex;
884 __u64 obd_last_committed;
885 struct fsfilt_operations *obd_fsops;
886 spinlock_t obd_osfs_lock;
887 struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */
888 __u64 obd_osfs_age;
889 struct lvfs_run_ctxt obd_lvfs_ctxt;
890 struct obd_llog_group obd_olg; /* default llog group */
891 struct obd_device *obd_observer;
892 struct rw_semaphore obd_observer_link_sem;
893 struct obd_notify_upcall obd_upcall;
894 struct obd_export *obd_self_export;
895 /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
896 struct list_head obd_exports_timed;
897 time_t obd_eviction_timer; /* for ping evictor */
898
899 int obd_max_recoverable_clients;
900 atomic_t obd_connected_clients;
901 int obd_stale_clients;
902 int obd_delayed_clients;
903 /* this lock protects all recovery list_heads, timer and
904 * obd_next_recovery_transno value */
905 spinlock_t obd_recovery_task_lock;
906 __u64 obd_next_recovery_transno;
907 int obd_replayed_requests;
908 int obd_requests_queued_for_recovery;
909 wait_queue_head_t obd_next_transno_waitq;
910 /* protected by obd_recovery_task_lock */
54319351 911 struct timer_list obd_recovery_timer;
d7e09d03
PT		 912 time_t obd_recovery_start; /* seconds */
913 time_t obd_recovery_end; /* seconds, for lprocfs_status */
914 int obd_recovery_time_hard;
915 int obd_recovery_timeout;
916 int obd_recovery_ir_factor;
917
918 /* new recovery stuff from CMD2 */
919 struct target_recovery_data obd_recovery_data;
920 int obd_replayed_locks;
921 atomic_t obd_req_replay_clients;
922 atomic_t obd_lock_replay_clients;
923 /* all lists are protected by obd_recovery_task_lock */
924 struct list_head obd_req_replay_queue;
925 struct list_head obd_lock_replay_queue;
926 struct list_head obd_final_req_queue;
927 int obd_recovery_stage;
928
929 union {
d7e09d03 930 struct client_obd cli;
d7e09d03 931 struct echo_client_obd echo_client;
d7e09d03
PT		 932 struct lov_obd lov;
933 struct lmv_obd lmv;
934 } u;
935 /* Fields used by LProcFS */
936 unsigned int obd_cntr_base;
937 struct lprocfs_stats *obd_stats;
938
939 unsigned int md_cntr_base;
940 struct lprocfs_stats *md_stats;
941
b59fe845 942 struct proc_dir_entry *obd_proc_entry;
73bb1da6 943 void *obd_proc_private; /* type private PDEs */
b59fe845
GKH		 944 struct proc_dir_entry *obd_proc_exports_entry;
945 struct proc_dir_entry *obd_svc_procroot;
d7e09d03
PT		 946 struct lprocfs_stats *obd_svc_stats;
947 atomic_t obd_evict_inprogress;
948 wait_queue_head_t obd_evict_inprogress_waitq;
949 struct list_head obd_evict_list; /* protected with pet_lock */
950
951 /**
952 * Ldlm pool part. Save last calculated SLV and Limit.
953 */
954 rwlock_t obd_pool_lock;
955 int obd_pool_limit;
956 __u64 obd_pool_slv;
957
958 /**
959 * A list of outstanding class_incref()'s against this obd. For
960 * debugging.
961 */
962 struct lu_ref obd_reference;
963
964 int obd_conn_inprogress;
965};
966
967#define OBD_LLOG_FL_SENDNOW 0x0001
968#define OBD_LLOG_FL_EXIT 0x0002
969
970enum obd_cleanup_stage {
971/* Special case hack for MDS LOVs */
972 OBD_CLEANUP_EARLY,
973/* can be directly mapped to .ldto_device_fini() */
974 OBD_CLEANUP_EXPORTS,
975};
976
977/* get/set_info keys */
978#define KEY_ASYNC "async"
979#define KEY_BLOCKSIZE_BITS "blocksize_bits"
980#define KEY_BLOCKSIZE "blocksize"
981#define KEY_CAPA_KEY "capa_key"
982#define KEY_CHANGELOG_CLEAR "changelog_clear"
983#define KEY_FID2PATH "fid2path"
984#define KEY_CHECKSUM "checksum"
985#define KEY_CLEAR_FS "clear_fs"
986#define KEY_CONN_DATA "conn_data"
987#define KEY_EVICT_BY_NID "evict_by_nid"
988#define KEY_FIEMAP "fiemap"
989#define KEY_FLUSH_CTX "flush_ctx"
990#define KEY_GRANT_SHRINK "grant_shrink"
991#define KEY_HSM_COPYTOOL_SEND "hsm_send"
992#define KEY_INIT_RECOV_BACKUP "init_recov_bk"
993#define KEY_INIT_RECOV "initial_recov"
994#define KEY_INTERMDS "inter_mds"
995#define KEY_LAST_ID "last_id"
996#define KEY_LAST_FID "last_fid"
997#define KEY_LOCK_TO_STRIPE "lock_to_stripe"
998#define KEY_LOVDESC "lovdesc"
999#define KEY_LOV_IDX "lov_idx"
44779340
BB		 1000#define KEY_MAX_EASIZE "max_easize"
1001#define KEY_DEFAULT_EASIZE "default_easize"
1002#define KEY_MAX_COOKIESIZE "max_cookiesize"
1003#define KEY_DEFAULT_COOKIESIZE "default_cookiesize"
d7e09d03
PT		 1004#define KEY_MDS_CONN "mds_conn"
1005#define KEY_MGSSEC "mgssec"
1006#define KEY_NEXT_ID "next_id"
1007#define KEY_READ_ONLY "read-only"
1008#define KEY_REGISTER_TARGET "register_target"
1009#define KEY_SET_FS "set_fs"
1010#define KEY_TGT_COUNT "tgt_count"
1011/* KEY_SET_INFO in lustre_idl.h */
1012#define KEY_SPTLRPC_CONF "sptlrpc_conf"
1013#define KEY_CONNECT_FLAG "connect_flags"
1014#define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
1015
1016#define KEY_CACHE_SET "cache_set"
1017#define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
1018#define KEY_CHANGELOG_INDEX "changelog_index"
1019
1020struct lu_context;
1021
1022/* /!\ must be coherent with include/linux/namei.h on patched kernel */
1023#define IT_OPEN (1 << 0)
1024#define IT_CREAT (1 << 1)
1025#define IT_READDIR (1 << 2)
1026#define IT_GETATTR (1 << 3)
1027#define IT_LOOKUP (1 << 4)
1028#define IT_UNLINK (1 << 5)
1029#define IT_TRUNC (1 << 6)
1030#define IT_GETXATTR (1 << 7)
1031#define IT_EXEC (1 << 8)
1032#define IT_PIN (1 << 9)
1033#define IT_LAYOUT (1 << 10)
1034#define IT_QUOTA_DQACQ (1 << 11)
1035#define IT_QUOTA_CONN (1 << 12)
7fc1f831 1036#define IT_SETXATTR (1 << 13)
d7e09d03
PT		 1037
1038static inline int it_to_lock_mode(struct lookup_intent *it)
1039{
1040 /* CREAT needs to be tested before open (both could be set) */
1041 if (it->it_op & IT_CREAT)
1042 return LCK_CW;
1043 else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP |
1044 IT_LAYOUT))
1045 return LCK_CR;
7fc1f831
AP		 1046 else if (it->it_op & IT_GETXATTR)
1047 return LCK_PR;
1048 else if (it->it_op & IT_SETXATTR)
1049 return LCK_PW;
d7e09d03
PT		 1050
1051 LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
1052 return -EINVAL;
1053}
1054
1055struct md_op_data {
17891183
MI		 1056 struct lu_fid op_fid1; /* operation fid1 (usually parent) */
1057 struct lu_fid op_fid2; /* operation fid2 (usually child) */
d7e09d03
PT		 1058 struct lu_fid op_fid3; /* 2 extra fids to find conflicting */
1059 struct lu_fid op_fid4; /* to the operation locks. */
114acca8 1060 u32 op_mds; /* what mds server open will go to */
d7e09d03
PT		 1061 struct lustre_handle op_handle;
1062 obd_time op_mod_time;
1063 const char *op_name;
1064 int op_namelen;
1065 __u32 op_mode;
1066 struct lmv_stripe_md *op_mea1;
1067 struct lmv_stripe_md *op_mea2;
1068 __u32 op_suppgids[2];
1069 __u32 op_fsuid;
1070 __u32 op_fsgid;
1071 cfs_cap_t op_cap;
1072 void *op_data;
1073
1074 /* iattr fields and blocks. */
1075 struct iattr op_attr;
1076 unsigned int op_attr_flags;
1077 __u64 op_valid;
1078 loff_t op_attr_blocks;
1079
1080 /* Size-on-MDS epoch and flags. */
1081 __u64 op_ioepoch;
1082 __u32 op_flags;
1083
1084 /* Capa fields */
1085 struct obd_capa *op_capa1;
1086 struct obd_capa *op_capa2;
1087
1088 /* Various operation flags. */
48d23e61 1089 enum mds_op_bias op_bias;
d7e09d03
PT		 1090
1091 /* Operation type */
1092 __u32 op_opc;
1093
1094 /* Used by readdir */
1095 __u64 op_offset;
1096
1097 /* Used by readdir */
1098 __u32 op_npages;
1099
1100 /* used to transfer info between the stacks of MD client
1101 * see enum op_cli_flags */
1102 __u32 op_cli_flags;
48d23e61
JX		 1103
1104 /* File object data version for HSM release, on client */
1105 __u64 op_data_version;
1106 struct lustre_handle op_lease_handle;
d7e09d03
PT		 1107};
1108
1109enum op_cli_flags {
1110 CLI_SET_MEA = 1 << 0,
1111 CLI_RM_ENTRY = 1 << 1,
1112};
1113
1114struct md_enqueue_info;
1115/* metadata stat-ahead */
1116typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req,
1117 struct md_enqueue_info *minfo,
1118 int rc);
1119
d7e09d03
PT		 1120struct md_enqueue_info {
1121 struct md_op_data mi_data;
1122 struct lookup_intent mi_it;
1123 struct lustre_handle mi_lockh;
1124 struct inode *mi_dir;
1125 md_enqueue_cb_t mi_cb;
1126 __u64 mi_cbdata;
1127 unsigned int mi_generation;
1128};
1129
1130struct obd_ops {
c34d9cd8 1131 struct module *o_owner;
d7e09d03
PT		 1132 int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
1133 void *karg, void *uarg);
1134 int (*o_get_info)(const struct lu_env *env, struct obd_export *,
1135 __u32 keylen, void *key, __u32 *vallen, void *val,
1136 struct lov_stripe_md *lsm);
1137 int (*o_set_info_async)(const struct lu_env *, struct obd_export *,
1138 __u32 keylen, void *key,
1139 __u32 vallen, void *val,
1140 struct ptlrpc_request_set *set);
1141 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
1142 int (*o_detach)(struct obd_device *dev);
1143 int (*o_setup) (struct obd_device *dev, struct lustre_cfg *cfg);
1144 int (*o_precleanup)(struct obd_device *dev,
1145 enum obd_cleanup_stage cleanup_stage);
1146 int (*o_cleanup)(struct obd_device *dev);
1147 int (*o_process_config)(struct obd_device *dev, obd_count len,
1148 void *data);
1149 int (*o_postrecov)(struct obd_device *dev);
1150 int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid,
1151 int priority);
1152 int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid);
1153 /* connect to the target device with given connection
1154 * data. @ocd->ocd_connect_flags is modified to reflect flags actually
1155 * granted by the target, which are guaranteed to be a subset of flags
1156 * asked for. If @ocd == NULL, use default parameters. */
1157 int (*o_connect)(const struct lu_env *env,
1158 struct obd_export **exp, struct obd_device *src,
1159 struct obd_uuid *cluuid, struct obd_connect_data *ocd,
1160 void *localdata);
1161 int (*o_reconnect)(const struct lu_env *env,
1162 struct obd_export *exp, struct obd_device *src,
1163 struct obd_uuid *cluuid,
1164 struct obd_connect_data *ocd,
1165 void *localdata);
1166 int (*o_disconnect)(struct obd_export *exp);
1167
1168 /* Initialize/finalize fids infrastructure. */
1169 int (*o_fid_init)(struct obd_device *obd,
1170 struct obd_export *exp, enum lu_cli_type type);
1171 int (*o_fid_fini)(struct obd_device *obd);
1172
1173 /* Allocate new fid according to passed @hint. */
1174 int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
1175 struct md_op_data *op_data);
1176
1177 /*
1178 * Object with @fid is getting deleted, we may want to do something
1179 * about this.
1180 */
1181 int (*o_statfs)(const struct lu_env *, struct obd_export *exp,
1182 struct obd_statfs *osfs, __u64 max_age, __u32 flags);
1183 int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo,
1184 __u64 max_age, struct ptlrpc_request_set *set);
1185 int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
1186 struct lov_stripe_md *mem_src);
1187 int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
1188 struct lov_mds_md *disk_src, int disk_len);
1189 int (*o_preallocate)(struct lustre_handle *, obd_count *req,
1190 obd_id *ids);
1191 /* FIXME: add fid capability support for create & destroy! */
1192 int (*o_precreate)(struct obd_export *exp);
1193 int (*o_create)(const struct lu_env *env, struct obd_export *exp,
1194 struct obdo *oa, struct lov_stripe_md **ea,
1195 struct obd_trans_info *oti);
1196 int (*o_create_async)(struct obd_export *exp, struct obd_info *oinfo,
1197 struct lov_stripe_md **ea,
1198 struct obd_trans_info *oti);
1199 int (*o_destroy)(const struct lu_env *env, struct obd_export *exp,
1200 struct obdo *oa, struct lov_stripe_md *ea,
1201 struct obd_trans_info *oti, struct obd_export *md_exp,
1202 void *capa);
1203 int (*o_setattr)(const struct lu_env *, struct obd_export *exp,
1204 struct obd_info *oinfo, struct obd_trans_info *oti);
1205 int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1206 struct obd_trans_info *oti,
1207 struct ptlrpc_request_set *rqset);
1208 int (*o_getattr)(const struct lu_env *env, struct obd_export *exp,
1209 struct obd_info *oinfo);
1210 int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1211 struct ptlrpc_request_set *set);
1212 int (*o_brw)(int rw, struct obd_export *exp, struct obd_info *oinfo,
1213 obd_count oa_bufs, struct brw_page *pgarr,
1214 struct obd_trans_info *oti);
1215 int (*o_merge_lvb)(struct obd_export *exp, struct lov_stripe_md *lsm,
1216 struct ost_lvb *lvb, int kms_only);
1217 int (*o_adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm,
1218 obd_off size, int shrink);
1219 int (*o_punch)(const struct lu_env *, struct obd_export *exp,
1220 struct obd_info *oinfo, struct obd_trans_info *oti,
1221 struct ptlrpc_request_set *rqset);
1222 int (*o_sync)(const struct lu_env *env, struct obd_export *exp,
1223 struct obd_info *oinfo, obd_size start, obd_size end,
1224 struct ptlrpc_request_set *set);
1225 int (*o_migrate)(struct lustre_handle *conn, struct lov_stripe_md *dst,
1226 struct lov_stripe_md *src, obd_size start,
1227 obd_size end, struct obd_trans_info *oti);
1228 int (*o_copy)(struct lustre_handle *dstconn, struct lov_stripe_md *dst,
1229 struct lustre_handle *srconn, struct lov_stripe_md *src,
1230 obd_size start, obd_size end, struct obd_trans_info *);
1231 int (*o_iterate)(struct lustre_handle *conn,
1232 int (*)(obd_id, obd_seq, void *),
1233 obd_id *startid, obd_seq seq, void *data);
1234 int (*o_preprw)(const struct lu_env *env, int cmd,
1235 struct obd_export *exp, struct obdo *oa, int objcount,
1236 struct obd_ioobj *obj, struct niobuf_remote *remote,
1237 int *nr_pages, struct niobuf_local *local,
1238 struct obd_trans_info *oti, struct lustre_capa *capa);
1239 int (*o_commitrw)(const struct lu_env *env, int cmd,
1240 struct obd_export *exp, struct obdo *oa,
1241 int objcount, struct obd_ioobj *obj,
1242 struct niobuf_remote *remote, int pages,
1243 struct niobuf_local *local,
1244 struct obd_trans_info *oti, int rc);
1245 int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo,
1246 struct ldlm_enqueue_info *einfo,
1247 struct ptlrpc_request_set *rqset);
1248 int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *,
1249 ldlm_iterator_t it, void *data);
1250 int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *,
1251 ldlm_iterator_t it, void *data);
1252 int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md,
1253 __u32 mode, struct lustre_handle *);
1254 int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *,
1255 ldlm_cancel_flags_t flags, void *opaque);
1256 int (*o_init_export)(struct obd_export *exp);
1257 int (*o_destroy_export)(struct obd_export *exp);
1258 int (*o_extent_calc)(struct obd_export *, struct lov_stripe_md *,
1259 int cmd, obd_off *);
1260
1261 /* llog related obd_methods */
1262 int (*o_llog_init)(struct obd_device *obd, struct obd_llog_group *grp,
1263 struct obd_device *disk_obd, int *idx);
1264 int (*o_llog_finish)(struct obd_device *obd, int count);
1265 int (*o_llog_connect)(struct obd_export *, struct llogd_conn_body *);
1266
1267 /* metadata-only methods */
1268 int (*o_pin)(struct obd_export *, const struct lu_fid *fid,
1269 struct obd_capa *, struct obd_client_handle *, int flag);
1270 int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
1271
1272 int (*o_import_event)(struct obd_device *, struct obd_import *,
1273 enum obd_import_event);
1274
1275 int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
1276 enum obd_notify_event ev, void *data);
1277
1278 int (*o_health_check)(const struct lu_env *env, struct obd_device *);
1279 struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
1280
1281 /* quota methods */
1282 int (*o_quotacheck)(struct obd_device *, struct obd_export *,
1283 struct obd_quotactl *);
1284 int (*o_quotactl)(struct obd_device *, struct obd_export *,
1285 struct obd_quotactl *);
1286
1287 int (*o_ping)(const struct lu_env *, struct obd_export *exp);
1288
1289 /* pools methods */
1290 int (*o_pool_new)(struct obd_device *obd, char *poolname);
1291 int (*o_pool_del)(struct obd_device *obd, char *poolname);
1292 int (*o_pool_add)(struct obd_device *obd, char *poolname,
1293 char *ostname);
1294 int (*o_pool_rem)(struct obd_device *obd, char *poolname,
1295 char *ostname);
1296 void (*o_getref)(struct obd_device *obd);
1297 void (*o_putref)(struct obd_device *obd);
1298 /*
1299 * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
1300 * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
1301 * Also, add a wrapper function in include/linux/obd_class.h. */
1302};
1303
1304enum {
1305 LUSTRE_OPC_MKDIR = (1 << 0),
1306 LUSTRE_OPC_SYMLINK = (1 << 1),
1307 LUSTRE_OPC_MKNOD = (1 << 2),
1308 LUSTRE_OPC_CREATE = (1 << 3),
1309 LUSTRE_OPC_ANY = (1 << 4)
1310};
1311
1312/* lmv structures */
1313#define MEA_MAGIC_LAST_CHAR 0xb2221ca1
1314#define MEA_MAGIC_ALL_CHARS 0xb222a11c
1315#define MEA_MAGIC_HASH_SEGMENT 0xb222a11b
1316
1317#define MAX_HASH_SIZE_32 0x7fffffffUL
1318#define MAX_HASH_SIZE 0x7fffffffffffffffULL
1319#define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL
1320
1321struct lustre_md {
1322 struct mdt_body *body;
1323 struct lov_stripe_md *lsm;
1324 struct lmv_stripe_md *mea;
1325#ifdef CONFIG_FS_POSIX_ACL
1326 struct posix_acl *posix_acl;
1327#endif
1328 struct mdt_remote_perm *remote_perm;
1329 struct obd_capa *mds_capa;
1330 struct obd_capa *oss_capa;
1331};
1332
1333struct md_open_data {
1334 struct obd_client_handle *mod_och;
1335 struct ptlrpc_request *mod_open_req;
1336 struct ptlrpc_request *mod_close_req;
63d42578
HZ		 1337 atomic_t mod_refcount;
1338 bool mod_is_create;
d7e09d03
PT		 1339};
1340
1341struct lookup_intent;
1342
1343struct md_ops {
1344 int (*m_getstatus)(struct obd_export *, struct lu_fid *,
1345 struct obd_capa **);
1346 int (*m_null_inode)(struct obd_export *, const struct lu_fid *);
1347 int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *,
1348 ldlm_iterator_t, void *);
1349 int (*m_close)(struct obd_export *, struct md_op_data *,
1350 struct md_open_data *, struct ptlrpc_request **);
1351 int (*m_create)(struct obd_export *, struct md_op_data *,
1352 const void *, int, int, __u32, __u32, cfs_cap_t,
1353 __u64, struct ptlrpc_request **);
1354 int (*m_done_writing)(struct obd_export *, struct md_op_data *,
1355 struct md_open_data *);
1356 int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
1357 struct lookup_intent *, struct md_op_data *,
1358 struct lustre_handle *, void *, int,
1359 struct ptlrpc_request **, __u64);
1360 int (*m_getattr)(struct obd_export *, struct md_op_data *,
1361 struct ptlrpc_request **);
1362 int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
1363 struct ptlrpc_request **);
1364 int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
1365 void *, int, struct lookup_intent *, int,
1366 struct ptlrpc_request **,
1367 ldlm_blocking_callback, __u64);
1368 int (*m_link)(struct obd_export *, struct md_op_data *,
1369 struct ptlrpc_request **);
1370 int (*m_rename)(struct obd_export *, struct md_op_data *,
1371 const char *, int, const char *, int,
1372 struct ptlrpc_request **);
1373 int (*m_is_subdir)(struct obd_export *, const struct lu_fid *,
1374 const struct lu_fid *,
1375 struct ptlrpc_request **);
1376 int (*m_setattr)(struct obd_export *, struct md_op_data *, void *,
1377 int , void *, int, struct ptlrpc_request **,
1378 struct md_open_data **mod);
1379 int (*m_sync)(struct obd_export *, const struct lu_fid *,
1380 struct obd_capa *, struct ptlrpc_request **);
1381 int (*m_readpage)(struct obd_export *, struct md_op_data *,
1382 struct page **, struct ptlrpc_request **);
1383
1384 int (*m_unlink)(struct obd_export *, struct md_op_data *,
1385 struct ptlrpc_request **);
1386
1387 int (*m_setxattr)(struct obd_export *, const struct lu_fid *,
1388 struct obd_capa *, obd_valid, const char *,
1389 const char *, int, int, int, __u32,
1390 struct ptlrpc_request **);
1391
1392 int (*m_getxattr)(struct obd_export *, const struct lu_fid *,
1393 struct obd_capa *, obd_valid, const char *,
1394 const char *, int, int, int,
1395 struct ptlrpc_request **);
1396
44779340 1397 int (*m_init_ea_size)(struct obd_export *, int, int, int, int);
d7e09d03
PT		 1398
1399 int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *,
1400 struct obd_export *, struct obd_export *,
1401 struct lustre_md *);
1402
1403 int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *);
1404
1405 int (*m_set_open_replay_data)(struct obd_export *,
1406 struct obd_client_handle *,
63d42578 1407 struct lookup_intent *);
d7e09d03
PT		 1408 int (*m_clear_open_replay_data)(struct obd_export *,
1409 struct obd_client_handle *);
1410 int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
1411
1412 ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64,
1413 const struct lu_fid *, ldlm_type_t,
1414 ldlm_policy_data_t *, ldlm_mode_t,
1415 struct lustre_handle *);
1416
1417 int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *,
1418 ldlm_policy_data_t *, ldlm_mode_t,
1419 ldlm_cancel_flags_t flags, void *opaque);
1420 int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc,
1421 renew_capa_cb_t cb);
1422 int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *,
1423 const struct req_msg_field *, struct obd_capa **);
1424
1425 int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *,
1426 struct obd_capa *, __u32,
1427 struct ptlrpc_request **);
1428
1429 int (*m_intent_getattr_async)(struct obd_export *,
1430 struct md_enqueue_info *,
1431 struct ldlm_enqueue_info *);
1432
1433 int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *,
1434 struct lu_fid *, __u64 *bits);
1435
1436 /*
1437 * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to
1438 * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
1439 * wrapper function in include/linux/obd_class.h.
1440 */
1441};
1442
1443struct lsm_operations {
1444 void (*lsm_free)(struct lov_stripe_md *);
1445 int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa,
1446 struct obd_export *md_exp);
1447 void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, obd_off *,
1448 obd_off *);
1449 void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *,
1450 obd_off *);
1451 int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes,
1452 __u16 *stripe_count);
1453 int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm,
1454 struct lov_mds_md *lmm);
1455};
1456
1457extern const struct lsm_operations lsm_v1_ops;
1458extern const struct lsm_operations lsm_v3_ops;
1459static inline const struct lsm_operations *lsm_op_find(int magic)
1460{
1461 switch(magic) {
1462 case LOV_MAGIC_V1:
1463 return &lsm_v1_ops;
1464 case LOV_MAGIC_V3:
1465 return &lsm_v3_ops;
1466 default:
1467 CERROR("Cannot recognize lsm_magic %08x\n", magic);
1468 return NULL;
1469 }
1470}
1471
1472/* Requests for obd_extent_calc() */
1473#define OBD_CALC_STRIPE_START 1
1474#define OBD_CALC_STRIPE_END 2
1475
1476static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
1477{
1478 return oinfo->oi_capa;
1479}
1480
1481static inline struct md_open_data *obd_mod_alloc(void)
1482{
1483 struct md_open_data *mod;
1484 OBD_ALLOC_PTR(mod);
1485 if (mod == NULL)
1486 return NULL;
1487 atomic_set(&mod->mod_refcount, 1);
1488 return mod;
1489}
1490
1491#define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
1492#define obd_mod_put(mod) \
1493({ \
1494 if (atomic_dec_and_test(&(mod)->mod_refcount)) { \
1495 if ((mod)->mod_open_req) \
1496 ptlrpc_req_finished((mod)->mod_open_req); \
1497 OBD_FREE_PTR(mod); \
1498 } \
1499})
1500
1501void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
1502void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent);
1503
1504/* return 1 if client should be resend request */
1505static inline int client_should_resend(int resend, struct client_obd *cli)
1506{
1507 return atomic_read(&cli->cl_resends) ?
1508 atomic_read(&cli->cl_resends) > resend : 1;
1509}
1510
1511/**
1512 * Return device name for this device
1513 *
1514 * XXX: lu_device is declared before obd_device, while a pointer pointing
1515 * back to obd_device in lu_device, so this helper function defines here
1516 * instead of in lu_object.h
1517 */
1518static inline const char *lu_dev_name(const struct lu_device *lu_dev)
1519{
1520 return lu_dev->ld_obd->obd_name;
1521}
1522
1523static inline bool filename_is_volatile(const char *name, int namelen, int *idx)
1524{
1525 const char *start;
1526 char *end;
1527
1528 if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0)
1529 return false;
1530
1531 /* caller does not care of idx */
1532 if (idx == NULL)
1533 return true;
1534
1535 /* volatile file, the MDT can be set from name */
1536 /* name format is LUSTRE_VOLATILE_HDR:[idx]: */
1537 /* if no MDT is specified, use std way */
1538 if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2)
1539 goto bad_format;
1540 /* test for no MDT idx case */
1541 if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') &&
1542 (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) {
1543 *idx = -1;
1544 return true;
1545 }
1546 /* we have an idx, read it */
1547 start = name + LUSTRE_VOLATILE_HDR_LEN + 1;
1548 *idx = strtoul(start, &end, 0);
1549 /* error cases:
1550 * no digit, no trailing :, negative value
1551 */
1552 if (((*idx == 0) && (end == start)) ||
1553 (*end != ':') || (*idx < 0))
1554 goto bad_format;
1555
1556 return true;
1557bad_format:
1558 /* bad format of mdt idx, we cannot return an error
1559 * to caller so we use hash algo */
1560 CERROR("Bad volatile file name format: %s\n",
1561 name + LUSTRE_VOLATILE_HDR_LEN);
1562 return false;
1563}
1564
1565static inline int cli_brw_size(struct obd_device *obd)
1566{
1567 LASSERT(obd != NULL);
1568 return obd->u.cli.cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
1569}
1570
1571#endif /* __OBD_H */
Linux kernel - Deliverables
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