4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_ECHO
38 #include "../../include/linux/libcfs/libcfs.h"
41 #include <obd_support.h>
42 #include <obd_class.h>
43 #include <lustre_debug.h>
44 #include <lprocfs_status.h>
45 #include <cl_object.h>
46 #include <md_object.h>
47 #include <lustre_fid.h>
48 #include <lustre_acl.h>
49 #include <lustre_net.h>
51 #include "echo_internal.h"
53 /** \defgroup echo_client Echo Client
58 struct cl_device ed_cl
;
59 struct echo_client_obd
*ed_ec
;
61 struct cl_site ed_site_myself
;
62 struct cl_site
*ed_site
;
63 struct lu_device
*ed_next
;
66 struct lu_client_seq
*ed_cl_seq
;
70 struct cl_object eo_cl
;
71 struct cl_object_header eo_hdr
;
73 struct echo_device
*eo_dev
;
74 struct list_head eo_obj_chain
;
75 struct lov_stripe_md
*eo_lsm
;
80 struct echo_object_conf
{
81 struct cl_object_conf eoc_cl
;
82 struct lov_stripe_md
**eoc_md
;
86 struct cl_page_slice ep_cl
;
88 struct page
*ep_vmpage
;
92 struct cl_lock_slice el_cl
;
93 struct list_head el_chain
;
94 struct echo_object
*el_object
;
100 struct cl_io_slice ei_cl
;
105 struct cl_req_slice er_cl
;
109 static int echo_client_setup(const struct lu_env
*env
,
110 struct obd_device
*obddev
,
111 struct lustre_cfg
*lcfg
);
112 static int echo_client_cleanup(struct obd_device
*obddev
);
115 /** \defgroup echo_helpers Helper functions
118 static inline struct echo_device
*cl2echo_dev(const struct cl_device
*dev
)
120 return container_of0(dev
, struct echo_device
, ed_cl
);
123 static inline struct cl_device
*echo_dev2cl(struct echo_device
*d
)
128 static inline struct echo_device
*obd2echo_dev(const struct obd_device
*obd
)
130 return cl2echo_dev(lu2cl_dev(obd
->obd_lu_dev
));
133 static inline struct cl_object
*echo_obj2cl(struct echo_object
*eco
)
138 static inline struct echo_object
*cl2echo_obj(const struct cl_object
*o
)
140 return container_of(o
, struct echo_object
, eo_cl
);
143 static inline struct echo_page
*cl2echo_page(const struct cl_page_slice
*s
)
145 return container_of(s
, struct echo_page
, ep_cl
);
148 static inline struct echo_lock
*cl2echo_lock(const struct cl_lock_slice
*s
)
150 return container_of(s
, struct echo_lock
, el_cl
);
153 static inline struct cl_lock
*echo_lock2cl(const struct echo_lock
*ecl
)
155 return ecl
->el_cl
.cls_lock
;
158 static struct lu_context_key echo_thread_key
;
159 static inline struct echo_thread_info
*echo_env_info(const struct lu_env
*env
)
161 struct echo_thread_info
*info
;
162 info
= lu_context_key_get(&env
->le_ctx
, &echo_thread_key
);
163 LASSERT(info
!= NULL
);
168 struct echo_object_conf
*cl2echo_conf(const struct cl_object_conf
*c
)
170 return container_of(c
, struct echo_object_conf
, eoc_cl
);
173 /** @} echo_helpers */
175 static struct echo_object
*cl_echo_object_find(struct echo_device
*d
,
176 struct lov_stripe_md
**lsm
);
177 static int cl_echo_object_put(struct echo_object
*eco
);
178 static int cl_echo_enqueue (struct echo_object
*eco
, obd_off start
,
179 obd_off end
, int mode
, __u64
*cookie
);
180 static int cl_echo_cancel (struct echo_device
*d
, __u64 cookie
);
181 static int cl_echo_object_brw(struct echo_object
*eco
, int rw
, obd_off offset
,
182 struct page
**pages
, int npages
, int async
);
184 static struct echo_thread_info
*echo_env_info(const struct lu_env
*env
);
186 struct echo_thread_info
{
187 struct echo_object_conf eti_conf
;
188 struct lustre_md eti_md
;
190 struct cl_2queue eti_queue
;
192 struct cl_lock_descr eti_descr
;
193 struct lu_fid eti_fid
;
194 struct lu_fid eti_fid2
;
195 struct md_op_spec eti_spec
;
196 struct lov_mds_md_v3 eti_lmm
;
197 struct lov_user_md_v3 eti_lum
;
198 struct md_attr eti_ma
;
199 struct lu_name eti_lname
;
200 /* per-thread values, can be re-used */
204 struct lu_buf eti_buf
;
205 char eti_xattr_buf
[LUSTRE_POSIX_ACL_MAX_SIZE
];
208 /* No session used right now */
209 struct echo_session_info
{
213 static struct kmem_cache
*echo_lock_kmem
;
214 static struct kmem_cache
*echo_object_kmem
;
215 static struct kmem_cache
*echo_thread_kmem
;
216 static struct kmem_cache
*echo_session_kmem
;
217 //static struct kmem_cache *echo_req_kmem;
219 static struct lu_kmem_descr echo_caches
[] = {
221 .ckd_cache
= &echo_lock_kmem
,
222 .ckd_name
= "echo_lock_kmem",
223 .ckd_size
= sizeof (struct echo_lock
)
226 .ckd_cache
= &echo_object_kmem
,
227 .ckd_name
= "echo_object_kmem",
228 .ckd_size
= sizeof (struct echo_object
)
231 .ckd_cache
= &echo_thread_kmem
,
232 .ckd_name
= "echo_thread_kmem",
233 .ckd_size
= sizeof (struct echo_thread_info
)
236 .ckd_cache
= &echo_session_kmem
,
237 .ckd_name
= "echo_session_kmem",
238 .ckd_size
= sizeof (struct echo_session_info
)
242 .ckd_cache
= &echo_req_kmem
,
243 .ckd_name
= "echo_req_kmem",
244 .ckd_size
= sizeof (struct echo_req
)
252 /** \defgroup echo_page Page operations
254 * Echo page operations.
258 static struct page
*echo_page_vmpage(const struct lu_env
*env
,
259 const struct cl_page_slice
*slice
)
261 return cl2echo_page(slice
)->ep_vmpage
;
264 static int echo_page_own(const struct lu_env
*env
,
265 const struct cl_page_slice
*slice
,
266 struct cl_io
*io
, int nonblock
)
268 struct echo_page
*ep
= cl2echo_page(slice
);
271 mutex_lock(&ep
->ep_lock
);
272 else if (!mutex_trylock(&ep
->ep_lock
))
277 static void echo_page_disown(const struct lu_env
*env
,
278 const struct cl_page_slice
*slice
,
281 struct echo_page
*ep
= cl2echo_page(slice
);
283 LASSERT(mutex_is_locked(&ep
->ep_lock
));
284 mutex_unlock(&ep
->ep_lock
);
287 static void echo_page_discard(const struct lu_env
*env
,
288 const struct cl_page_slice
*slice
,
289 struct cl_io
*unused
)
291 cl_page_delete(env
, slice
->cpl_page
);
294 static int echo_page_is_vmlocked(const struct lu_env
*env
,
295 const struct cl_page_slice
*slice
)
297 if (mutex_is_locked(&cl2echo_page(slice
)->ep_lock
))
302 static void echo_page_completion(const struct lu_env
*env
,
303 const struct cl_page_slice
*slice
,
306 LASSERT(slice
->cpl_page
->cp_sync_io
!= NULL
);
309 static void echo_page_fini(const struct lu_env
*env
,
310 struct cl_page_slice
*slice
)
312 struct echo_page
*ep
= cl2echo_page(slice
);
313 struct echo_object
*eco
= cl2echo_obj(slice
->cpl_obj
);
314 struct page
*vmpage
= ep
->ep_vmpage
;
316 atomic_dec(&eco
->eo_npages
);
317 page_cache_release(vmpage
);
320 static int echo_page_prep(const struct lu_env
*env
,
321 const struct cl_page_slice
*slice
,
322 struct cl_io
*unused
)
327 static int echo_page_print(const struct lu_env
*env
,
328 const struct cl_page_slice
*slice
,
329 void *cookie
, lu_printer_t printer
)
331 struct echo_page
*ep
= cl2echo_page(slice
);
333 (*printer
)(env
, cookie
, LUSTRE_ECHO_CLIENT_NAME
"-page@%p %d vm@%p\n",
334 ep
, mutex_is_locked(&ep
->ep_lock
), ep
->ep_vmpage
);
338 static const struct cl_page_operations echo_page_ops
= {
339 .cpo_own
= echo_page_own
,
340 .cpo_disown
= echo_page_disown
,
341 .cpo_discard
= echo_page_discard
,
342 .cpo_vmpage
= echo_page_vmpage
,
343 .cpo_fini
= echo_page_fini
,
344 .cpo_print
= echo_page_print
,
345 .cpo_is_vmlocked
= echo_page_is_vmlocked
,
348 .cpo_prep
= echo_page_prep
,
349 .cpo_completion
= echo_page_completion
,
352 .cpo_prep
= echo_page_prep
,
353 .cpo_completion
= echo_page_completion
,
359 /** \defgroup echo_lock Locking
361 * echo lock operations
365 static void echo_lock_fini(const struct lu_env
*env
,
366 struct cl_lock_slice
*slice
)
368 struct echo_lock
*ecl
= cl2echo_lock(slice
);
370 LASSERT(list_empty(&ecl
->el_chain
));
371 OBD_SLAB_FREE_PTR(ecl
, echo_lock_kmem
);
374 static void echo_lock_delete(const struct lu_env
*env
,
375 const struct cl_lock_slice
*slice
)
377 struct echo_lock
*ecl
= cl2echo_lock(slice
);
379 LASSERT(list_empty(&ecl
->el_chain
));
382 static int echo_lock_fits_into(const struct lu_env
*env
,
383 const struct cl_lock_slice
*slice
,
384 const struct cl_lock_descr
*need
,
385 const struct cl_io
*unused
)
390 static struct cl_lock_operations echo_lock_ops
= {
391 .clo_fini
= echo_lock_fini
,
392 .clo_delete
= echo_lock_delete
,
393 .clo_fits_into
= echo_lock_fits_into
398 /** \defgroup echo_cl_ops cl_object operations
400 * operations for cl_object
404 static int echo_page_init(const struct lu_env
*env
, struct cl_object
*obj
,
405 struct cl_page
*page
, struct page
*vmpage
)
407 struct echo_page
*ep
= cl_object_page_slice(obj
, page
);
408 struct echo_object
*eco
= cl2echo_obj(obj
);
410 ep
->ep_vmpage
= vmpage
;
411 page_cache_get(vmpage
);
412 mutex_init(&ep
->ep_lock
);
413 cl_page_slice_add(page
, &ep
->ep_cl
, obj
, &echo_page_ops
);
414 atomic_inc(&eco
->eo_npages
);
418 static int echo_io_init(const struct lu_env
*env
, struct cl_object
*obj
,
424 static int echo_lock_init(const struct lu_env
*env
,
425 struct cl_object
*obj
, struct cl_lock
*lock
,
426 const struct cl_io
*unused
)
428 struct echo_lock
*el
;
430 OBD_SLAB_ALLOC_PTR_GFP(el
, echo_lock_kmem
, GFP_NOFS
);
432 cl_lock_slice_add(lock
, &el
->el_cl
, obj
, &echo_lock_ops
);
433 el
->el_object
= cl2echo_obj(obj
);
434 INIT_LIST_HEAD(&el
->el_chain
);
435 atomic_set(&el
->el_refcount
, 0);
437 return el
== NULL
? -ENOMEM
: 0;
440 static int echo_conf_set(const struct lu_env
*env
, struct cl_object
*obj
,
441 const struct cl_object_conf
*conf
)
446 static const struct cl_object_operations echo_cl_obj_ops
= {
447 .coo_page_init
= echo_page_init
,
448 .coo_lock_init
= echo_lock_init
,
449 .coo_io_init
= echo_io_init
,
450 .coo_conf_set
= echo_conf_set
452 /** @} echo_cl_ops */
454 /** \defgroup echo_lu_ops lu_object operations
456 * operations for echo lu object.
460 static int echo_object_init(const struct lu_env
*env
, struct lu_object
*obj
,
461 const struct lu_object_conf
*conf
)
463 struct echo_device
*ed
= cl2echo_dev(lu2cl_dev(obj
->lo_dev
));
464 struct echo_client_obd
*ec
= ed
->ed_ec
;
465 struct echo_object
*eco
= cl2echo_obj(lu2cl(obj
));
468 struct lu_object
*below
;
469 struct lu_device
*under
;
472 below
= under
->ld_ops
->ldo_object_alloc(env
, obj
->lo_header
,
476 lu_object_add(obj
, below
);
479 if (!ed
->ed_next_ismd
) {
480 const struct cl_object_conf
*cconf
= lu2cl_conf(conf
);
481 struct echo_object_conf
*econf
= cl2echo_conf(cconf
);
483 LASSERT(econf
->eoc_md
);
484 eco
->eo_lsm
= *econf
->eoc_md
;
485 /* clear the lsm pointer so that it won't get freed. */
486 *econf
->eoc_md
= NULL
;
492 atomic_set(&eco
->eo_npages
, 0);
493 cl_object_page_init(lu2cl(obj
), sizeof(struct echo_page
));
495 spin_lock(&ec
->ec_lock
);
496 list_add_tail(&eco
->eo_obj_chain
, &ec
->ec_objects
);
497 spin_unlock(&ec
->ec_lock
);
502 /* taken from osc_unpackmd() */
503 static int echo_alloc_memmd(struct echo_device
*ed
,
504 struct lov_stripe_md
**lsmp
)
508 /* If export is lov/osc then use their obd method */
509 if (ed
->ed_next
!= NULL
)
510 return obd_alloc_memmd(ed
->ed_ec
->ec_exp
, lsmp
);
511 /* OFD has no unpackmd method, do everything here */
512 lsm_size
= lov_stripe_md_size(1);
514 LASSERT(*lsmp
== NULL
);
515 OBD_ALLOC(*lsmp
, lsm_size
);
519 OBD_ALLOC((*lsmp
)->lsm_oinfo
[0], sizeof(struct lov_oinfo
));
520 if ((*lsmp
)->lsm_oinfo
[0] == NULL
) {
521 OBD_FREE(*lsmp
, lsm_size
);
525 loi_init((*lsmp
)->lsm_oinfo
[0]);
526 (*lsmp
)->lsm_maxbytes
= LUSTRE_STRIPE_MAXBYTES
;
527 ostid_set_seq_echo(&(*lsmp
)->lsm_oi
);
532 static int echo_free_memmd(struct echo_device
*ed
, struct lov_stripe_md
**lsmp
)
536 /* If export is lov/osc then use their obd method */
537 if (ed
->ed_next
!= NULL
)
538 return obd_free_memmd(ed
->ed_ec
->ec_exp
, lsmp
);
539 /* OFD has no unpackmd method, do everything here */
540 lsm_size
= lov_stripe_md_size(1);
542 LASSERT(*lsmp
!= NULL
);
543 OBD_FREE((*lsmp
)->lsm_oinfo
[0], sizeof(struct lov_oinfo
));
544 OBD_FREE(*lsmp
, lsm_size
);
549 static void echo_object_free(const struct lu_env
*env
, struct lu_object
*obj
)
551 struct echo_object
*eco
= cl2echo_obj(lu2cl(obj
));
552 struct echo_client_obd
*ec
= eco
->eo_dev
->ed_ec
;
554 LASSERT(atomic_read(&eco
->eo_npages
) == 0);
556 spin_lock(&ec
->ec_lock
);
557 list_del_init(&eco
->eo_obj_chain
);
558 spin_unlock(&ec
->ec_lock
);
561 lu_object_header_fini(obj
->lo_header
);
564 echo_free_memmd(eco
->eo_dev
, &eco
->eo_lsm
);
565 OBD_SLAB_FREE_PTR(eco
, echo_object_kmem
);
568 static int echo_object_print(const struct lu_env
*env
, void *cookie
,
569 lu_printer_t p
, const struct lu_object
*o
)
571 struct echo_object
*obj
= cl2echo_obj(lu2cl(o
));
573 return (*p
)(env
, cookie
, "echoclient-object@%p", obj
);
576 static const struct lu_object_operations echo_lu_obj_ops
= {
577 .loo_object_init
= echo_object_init
,
578 .loo_object_delete
= NULL
,
579 .loo_object_release
= NULL
,
580 .loo_object_free
= echo_object_free
,
581 .loo_object_print
= echo_object_print
,
582 .loo_object_invariant
= NULL
584 /** @} echo_lu_ops */
586 /** \defgroup echo_lu_dev_ops lu_device operations
588 * Operations for echo lu device.
592 static struct lu_object
*echo_object_alloc(const struct lu_env
*env
,
593 const struct lu_object_header
*hdr
,
594 struct lu_device
*dev
)
596 struct echo_object
*eco
;
597 struct lu_object
*obj
= NULL
;
599 /* we're the top dev. */
600 LASSERT(hdr
== NULL
);
601 OBD_SLAB_ALLOC_PTR_GFP(eco
, echo_object_kmem
, GFP_NOFS
);
603 struct cl_object_header
*hdr
= &eco
->eo_hdr
;
605 obj
= &echo_obj2cl(eco
)->co_lu
;
606 cl_object_header_init(hdr
);
607 lu_object_init(obj
, &hdr
->coh_lu
, dev
);
608 lu_object_add_top(&hdr
->coh_lu
, obj
);
610 eco
->eo_cl
.co_ops
= &echo_cl_obj_ops
;
611 obj
->lo_ops
= &echo_lu_obj_ops
;
616 static struct lu_device_operations echo_device_lu_ops
= {
617 .ldo_object_alloc
= echo_object_alloc
,
620 /** @} echo_lu_dev_ops */
622 static struct cl_device_operations echo_device_cl_ops
= {
625 /** \defgroup echo_init Setup and teardown
627 * Init and fini functions for echo client.
631 static int echo_site_init(const struct lu_env
*env
, struct echo_device
*ed
)
633 struct cl_site
*site
= &ed
->ed_site_myself
;
636 /* initialize site */
637 rc
= cl_site_init(site
, &ed
->ed_cl
);
639 CERROR("Cannot initialize site for echo client(%d)\n", rc
);
643 rc
= lu_site_init_finish(&site
->cs_lu
);
651 static void echo_site_fini(const struct lu_env
*env
, struct echo_device
*ed
)
654 if (!ed
->ed_next_ismd
)
655 cl_site_fini(ed
->ed_site
);
660 static void *echo_thread_key_init(const struct lu_context
*ctx
,
661 struct lu_context_key
*key
)
663 struct echo_thread_info
*info
;
665 OBD_SLAB_ALLOC_PTR_GFP(info
, echo_thread_kmem
, GFP_NOFS
);
667 info
= ERR_PTR(-ENOMEM
);
671 static void echo_thread_key_fini(const struct lu_context
*ctx
,
672 struct lu_context_key
*key
, void *data
)
674 struct echo_thread_info
*info
= data
;
675 OBD_SLAB_FREE_PTR(info
, echo_thread_kmem
);
678 static void echo_thread_key_exit(const struct lu_context
*ctx
,
679 struct lu_context_key
*key
, void *data
)
683 static struct lu_context_key echo_thread_key
= {
684 .lct_tags
= LCT_CL_THREAD
,
685 .lct_init
= echo_thread_key_init
,
686 .lct_fini
= echo_thread_key_fini
,
687 .lct_exit
= echo_thread_key_exit
690 static void *echo_session_key_init(const struct lu_context
*ctx
,
691 struct lu_context_key
*key
)
693 struct echo_session_info
*session
;
695 OBD_SLAB_ALLOC_PTR_GFP(session
, echo_session_kmem
, GFP_NOFS
);
697 session
= ERR_PTR(-ENOMEM
);
701 static void echo_session_key_fini(const struct lu_context
*ctx
,
702 struct lu_context_key
*key
, void *data
)
704 struct echo_session_info
*session
= data
;
705 OBD_SLAB_FREE_PTR(session
, echo_session_kmem
);
708 static void echo_session_key_exit(const struct lu_context
*ctx
,
709 struct lu_context_key
*key
, void *data
)
713 static struct lu_context_key echo_session_key
= {
714 .lct_tags
= LCT_SESSION
,
715 .lct_init
= echo_session_key_init
,
716 .lct_fini
= echo_session_key_fini
,
717 .lct_exit
= echo_session_key_exit
720 LU_TYPE_INIT_FINI(echo
, &echo_thread_key
, &echo_session_key
);
722 #define ECHO_SEQ_WIDTH 0xffffffff
723 static int echo_fid_init(struct echo_device
*ed
, char *obd_name
,
724 struct seq_server_site
*ss
)
729 OBD_ALLOC_PTR(ed
->ed_cl_seq
);
730 if (ed
->ed_cl_seq
== NULL
)
733 OBD_ALLOC(prefix
, MAX_OBD_NAME
+ 5);
735 GOTO(out_free_seq
, rc
= -ENOMEM
);
737 snprintf(prefix
, MAX_OBD_NAME
+ 5, "srv-%s", obd_name
);
739 /* Init client side sequence-manager */
740 rc
= seq_client_init(ed
->ed_cl_seq
, NULL
,
742 prefix
, ss
->ss_server_seq
);
743 ed
->ed_cl_seq
->lcs_width
= ECHO_SEQ_WIDTH
;
744 OBD_FREE(prefix
, MAX_OBD_NAME
+ 5);
746 GOTO(out_free_seq
, rc
);
751 OBD_FREE_PTR(ed
->ed_cl_seq
);
752 ed
->ed_cl_seq
= NULL
;
756 static int echo_fid_fini(struct obd_device
*obddev
)
758 struct echo_device
*ed
= obd2echo_dev(obddev
);
760 if (ed
->ed_cl_seq
!= NULL
) {
761 seq_client_fini(ed
->ed_cl_seq
);
762 OBD_FREE_PTR(ed
->ed_cl_seq
);
763 ed
->ed_cl_seq
= NULL
;
769 static struct lu_device
*echo_device_alloc(const struct lu_env
*env
,
770 struct lu_device_type
*t
,
771 struct lustre_cfg
*cfg
)
773 struct lu_device
*next
;
774 struct echo_device
*ed
;
775 struct cl_device
*cd
;
776 struct obd_device
*obd
= NULL
; /* to keep compiler happy */
777 struct obd_device
*tgt
;
778 const char *tgt_type_name
;
784 GOTO(out
, rc
= -ENOMEM
);
788 rc
= cl_device_init(cd
, t
);
792 cd
->cd_lu_dev
.ld_ops
= &echo_device_lu_ops
;
793 cd
->cd_ops
= &echo_device_cl_ops
;
796 obd
= class_name2obd(lustre_cfg_string(cfg
, 0));
797 LASSERT(obd
!= NULL
);
798 LASSERT(env
!= NULL
);
800 tgt
= class_name2obd(lustre_cfg_string(cfg
, 1));
802 CERROR("Can not find tgt device %s\n",
803 lustre_cfg_string(cfg
, 1));
804 GOTO(out
, rc
= -ENODEV
);
807 next
= tgt
->obd_lu_dev
;
808 if (!strcmp(tgt
->obd_type
->typ_name
, LUSTRE_MDT_NAME
)) {
809 ed
->ed_next_ismd
= 1;
811 ed
->ed_next_ismd
= 0;
812 rc
= echo_site_init(env
, ed
);
818 rc
= echo_client_setup(env
, obd
, cfg
);
822 ed
->ed_ec
= &obd
->u
.echo_client
;
825 if (ed
->ed_next_ismd
) {
826 /* Suppose to connect to some Metadata layer */
828 struct lu_device
*ld
;
832 CERROR("%s is not lu device type!\n",
833 lustre_cfg_string(cfg
, 1));
834 GOTO(out
, rc
= -EINVAL
);
837 tgt_type_name
= lustre_cfg_string(cfg
, 2);
838 if (!tgt_type_name
) {
839 CERROR("%s no type name for echo %s setup\n",
840 lustre_cfg_string(cfg
, 1),
841 tgt
->obd_type
->typ_name
);
842 GOTO(out
, rc
= -EINVAL
);
847 spin_lock(&ls
->ls_ld_lock
);
848 list_for_each_entry(ld
, &ls
->ls_ld_linkage
, ld_linkage
) {
849 if (strcmp(ld
->ld_type
->ldt_name
, tgt_type_name
) == 0) {
854 spin_unlock(&ls
->ls_ld_lock
);
857 CERROR("%s is not lu device type!\n",
858 lustre_cfg_string(cfg
, 1));
859 GOTO(out
, rc
= -EINVAL
);
863 /* For MD echo client, it will use the site in MDS stack */
864 ed
->ed_site_myself
.cs_lu
= *ls
;
865 ed
->ed_site
= &ed
->ed_site_myself
;
866 ed
->ed_cl
.cd_lu_dev
.ld_site
= &ed
->ed_site_myself
.cs_lu
;
867 rc
= echo_fid_init(ed
, obd
->obd_name
, lu_site2seq(ls
));
869 CERROR("echo fid init error %d\n", rc
);
873 /* if echo client is to be stacked upon ost device, the next is
874 * NULL since ost is not a clio device so far */
875 if (next
!= NULL
&& !lu_device_is_cl(next
))
878 tgt_type_name
= tgt
->obd_type
->typ_name
;
880 LASSERT(next
!= NULL
);
881 if (next
->ld_site
!= NULL
)
882 GOTO(out
, rc
= -EBUSY
);
884 next
->ld_site
= &ed
->ed_site
->cs_lu
;
885 rc
= next
->ld_type
->ldt_ops
->ldto_device_init(env
, next
,
886 next
->ld_type
->ldt_name
,
891 /* Tricky case, I have to determine the obd type since
892 * CLIO uses the different parameters to initialize
893 * objects for lov & osc. */
894 if (strcmp(tgt_type_name
, LUSTRE_LOV_NAME
) == 0)
895 ed
->ed_next_islov
= 1;
897 LASSERT(strcmp(tgt_type_name
,
898 LUSTRE_OSC_NAME
) == 0);
900 LASSERT(strcmp(tgt_type_name
, LUSTRE_OST_NAME
) == 0);
904 return &cd
->cd_lu_dev
;
909 rc2
= echo_client_cleanup(obd
);
911 CERROR("Cleanup obd device %s error(%d)\n",
916 echo_site_fini(env
, ed
);
918 cl_device_fini(&ed
->ed_cl
);
928 static int echo_device_init(const struct lu_env
*env
, struct lu_device
*d
,
929 const char *name
, struct lu_device
*next
)
935 static struct lu_device
*echo_device_fini(const struct lu_env
*env
,
938 struct echo_device
*ed
= cl2echo_dev(lu2cl_dev(d
));
939 struct lu_device
*next
= ed
->ed_next
;
941 while (next
&& !ed
->ed_next_ismd
)
942 next
= next
->ld_type
->ldt_ops
->ldto_device_fini(env
, next
);
946 static void echo_lock_release(const struct lu_env
*env
,
947 struct echo_lock
*ecl
,
950 struct cl_lock
*clk
= echo_lock2cl(ecl
);
954 cl_lock_release(env
, clk
, "ec enqueue", ecl
->el_object
);
956 cl_lock_mutex_get(env
, clk
);
957 cl_lock_cancel(env
, clk
);
958 cl_lock_delete(env
, clk
);
959 cl_lock_mutex_put(env
, clk
);
961 cl_lock_put(env
, clk
);
964 static struct lu_device
*echo_device_free(const struct lu_env
*env
,
967 struct echo_device
*ed
= cl2echo_dev(lu2cl_dev(d
));
968 struct echo_client_obd
*ec
= ed
->ed_ec
;
969 struct echo_object
*eco
;
970 struct lu_device
*next
= ed
->ed_next
;
972 CDEBUG(D_INFO
, "echo device:%p is going to be freed, next = %p\n",
975 lu_site_purge(env
, &ed
->ed_site
->cs_lu
, -1);
977 /* check if there are objects still alive.
978 * It shouldn't have any object because lu_site_purge would cleanup
979 * all of cached objects. Anyway, probably the echo device is being
980 * parallelly accessed.
982 spin_lock(&ec
->ec_lock
);
983 list_for_each_entry(eco
, &ec
->ec_objects
, eo_obj_chain
)
985 spin_unlock(&ec
->ec_lock
);
988 lu_site_purge(env
, &ed
->ed_site
->cs_lu
, -1);
991 "Waiting for the reference of echo object to be dropped\n");
993 /* Wait for the last reference to be dropped. */
994 spin_lock(&ec
->ec_lock
);
995 while (!list_empty(&ec
->ec_objects
)) {
996 spin_unlock(&ec
->ec_lock
);
997 CERROR("echo_client still has objects at cleanup time, "
998 "wait for 1 second\n");
999 set_current_state(TASK_UNINTERRUPTIBLE
);
1000 schedule_timeout(cfs_time_seconds(1));
1001 lu_site_purge(env
, &ed
->ed_site
->cs_lu
, -1);
1002 spin_lock(&ec
->ec_lock
);
1004 spin_unlock(&ec
->ec_lock
);
1006 LASSERT(list_empty(&ec
->ec_locks
));
1008 CDEBUG(D_INFO
, "No object exists, exiting...\n");
1010 echo_client_cleanup(d
->ld_obd
);
1011 echo_fid_fini(d
->ld_obd
);
1012 while (next
&& !ed
->ed_next_ismd
)
1013 next
= next
->ld_type
->ldt_ops
->ldto_device_free(env
, next
);
1015 LASSERT(ed
->ed_site
== lu2cl_site(d
->ld_site
));
1016 echo_site_fini(env
, ed
);
1017 cl_device_fini(&ed
->ed_cl
);
1023 static const struct lu_device_type_operations echo_device_type_ops
= {
1024 .ldto_init
= echo_type_init
,
1025 .ldto_fini
= echo_type_fini
,
1027 .ldto_start
= echo_type_start
,
1028 .ldto_stop
= echo_type_stop
,
1030 .ldto_device_alloc
= echo_device_alloc
,
1031 .ldto_device_free
= echo_device_free
,
1032 .ldto_device_init
= echo_device_init
,
1033 .ldto_device_fini
= echo_device_fini
1036 static struct lu_device_type echo_device_type
= {
1037 .ldt_tags
= LU_DEVICE_CL
,
1038 .ldt_name
= LUSTRE_ECHO_CLIENT_NAME
,
1039 .ldt_ops
= &echo_device_type_ops
,
1040 .ldt_ctx_tags
= LCT_CL_THREAD
| LCT_MD_THREAD
| LCT_DT_THREAD
,
1044 /** \defgroup echo_exports Exported operations
1046 * exporting functions to echo client
1051 /* Interfaces to echo client obd device */
1052 static struct echo_object
*cl_echo_object_find(struct echo_device
*d
,
1053 struct lov_stripe_md
**lsmp
)
1056 struct echo_thread_info
*info
;
1057 struct echo_object_conf
*conf
;
1058 struct lov_stripe_md
*lsm
;
1059 struct echo_object
*eco
;
1060 struct cl_object
*obj
;
1068 LASSERTF(ostid_id(&lsm
->lsm_oi
) != 0, DOSTID
"\n", POSTID(&lsm
->lsm_oi
));
1069 LASSERTF(ostid_seq(&lsm
->lsm_oi
) == FID_SEQ_ECHO
, DOSTID
"\n",
1070 POSTID(&lsm
->lsm_oi
));
1072 /* Never return an object if the obd is to be freed. */
1073 if (echo_dev2cl(d
)->cd_lu_dev
.ld_obd
->obd_stopping
)
1074 return ERR_PTR(-ENODEV
);
1076 env
= cl_env_get(&refcheck
);
1080 info
= echo_env_info(env
);
1081 conf
= &info
->eti_conf
;
1083 if (!d
->ed_next_islov
) {
1084 struct lov_oinfo
*oinfo
= lsm
->lsm_oinfo
[0];
1085 LASSERT(oinfo
!= NULL
);
1086 oinfo
->loi_oi
= lsm
->lsm_oi
;
1087 conf
->eoc_cl
.u
.coc_oinfo
= oinfo
;
1089 struct lustre_md
*md
;
1091 memset(md
, 0, sizeof(*md
));
1093 conf
->eoc_cl
.u
.coc_md
= md
;
1096 conf
->eoc_md
= lsmp
;
1098 fid
= &info
->eti_fid
;
1099 rc
= ostid_to_fid(fid
, &lsm
->lsm_oi
, 0);
1101 GOTO(out
, eco
= ERR_PTR(rc
));
1103 /* In the function below, .hs_keycmp resolves to
1104 * lu_obj_hop_keycmp() */
1105 /* coverity[overrun-buffer-val] */
1106 obj
= cl_object_find(env
, echo_dev2cl(d
), fid
, &conf
->eoc_cl
);
1108 GOTO(out
, eco
= (void *)obj
);
1110 eco
= cl2echo_obj(obj
);
1111 if (eco
->eo_deleted
) {
1112 cl_object_put(env
, obj
);
1113 eco
= ERR_PTR(-EAGAIN
);
1117 cl_env_put(env
, &refcheck
);
1121 static int cl_echo_object_put(struct echo_object
*eco
)
1124 struct cl_object
*obj
= echo_obj2cl(eco
);
1127 env
= cl_env_get(&refcheck
);
1129 return PTR_ERR(env
);
1131 /* an external function to kill an object? */
1132 if (eco
->eo_deleted
) {
1133 struct lu_object_header
*loh
= obj
->co_lu
.lo_header
;
1134 LASSERT(&eco
->eo_hdr
== luh2coh(loh
));
1135 set_bit(LU_OBJECT_HEARD_BANSHEE
, &loh
->loh_flags
);
1138 cl_object_put(env
, obj
);
1139 cl_env_put(env
, &refcheck
);
1143 static int cl_echo_enqueue0(struct lu_env
*env
, struct echo_object
*eco
,
1144 obd_off start
, obd_off end
, int mode
,
1145 __u64
*cookie
, __u32 enqflags
)
1148 struct cl_lock
*lck
;
1149 struct cl_object
*obj
;
1150 struct cl_lock_descr
*descr
;
1151 struct echo_thread_info
*info
;
1154 info
= echo_env_info(env
);
1156 descr
= &info
->eti_descr
;
1157 obj
= echo_obj2cl(eco
);
1159 descr
->cld_obj
= obj
;
1160 descr
->cld_start
= cl_index(obj
, start
);
1161 descr
->cld_end
= cl_index(obj
, end
);
1162 descr
->cld_mode
= mode
== LCK_PW
? CLM_WRITE
: CLM_READ
;
1163 descr
->cld_enq_flags
= enqflags
;
1166 lck
= cl_lock_request(env
, io
, descr
, "ec enqueue", eco
);
1168 struct echo_client_obd
*ec
= eco
->eo_dev
->ed_ec
;
1169 struct echo_lock
*el
;
1171 rc
= cl_wait(env
, lck
);
1173 el
= cl2echo_lock(cl_lock_at(lck
, &echo_device_type
));
1174 spin_lock(&ec
->ec_lock
);
1175 if (list_empty(&el
->el_chain
)) {
1176 list_add(&el
->el_chain
, &ec
->ec_locks
);
1177 el
->el_cookie
= ++ec
->ec_unique
;
1179 atomic_inc(&el
->el_refcount
);
1180 *cookie
= el
->el_cookie
;
1181 spin_unlock(&ec
->ec_lock
);
1183 cl_lock_release(env
, lck
, "ec enqueue", current
);
1189 static int cl_echo_enqueue(struct echo_object
*eco
, obd_off start
, obd_off end
,
1190 int mode
, __u64
*cookie
)
1192 struct echo_thread_info
*info
;
1198 env
= cl_env_get(&refcheck
);
1200 return PTR_ERR(env
);
1202 info
= echo_env_info(env
);
1205 io
->ci_ignore_layout
= 1;
1206 result
= cl_io_init(env
, io
, CIT_MISC
, echo_obj2cl(eco
));
1209 LASSERT(result
== 0);
1211 result
= cl_echo_enqueue0(env
, eco
, start
, end
, mode
, cookie
, 0);
1212 cl_io_fini(env
, io
);
1215 cl_env_put(env
, &refcheck
);
1219 static int cl_echo_cancel0(struct lu_env
*env
, struct echo_device
*ed
,
1222 struct echo_client_obd
*ec
= ed
->ed_ec
;
1223 struct echo_lock
*ecl
= NULL
;
1224 struct list_head
*el
;
1225 int found
= 0, still_used
= 0;
1227 LASSERT(ec
!= NULL
);
1228 spin_lock(&ec
->ec_lock
);
1229 list_for_each (el
, &ec
->ec_locks
) {
1230 ecl
= list_entry (el
, struct echo_lock
, el_chain
);
1231 CDEBUG(D_INFO
, "ecl: %p, cookie: "LPX64
"\n", ecl
, ecl
->el_cookie
);
1232 found
= (ecl
->el_cookie
== cookie
);
1234 if (atomic_dec_and_test(&ecl
->el_refcount
))
1235 list_del_init(&ecl
->el_chain
);
1241 spin_unlock(&ec
->ec_lock
);
1246 echo_lock_release(env
, ecl
, still_used
);
1250 static int cl_echo_cancel(struct echo_device
*ed
, __u64 cookie
)
1256 env
= cl_env_get(&refcheck
);
1258 return PTR_ERR(env
);
1260 rc
= cl_echo_cancel0(env
, ed
, cookie
);
1262 cl_env_put(env
, &refcheck
);
1266 static int cl_echo_async_brw(const struct lu_env
*env
, struct cl_io
*io
,
1267 enum cl_req_type unused
, struct cl_2queue
*queue
)
1269 struct cl_page
*clp
;
1270 struct cl_page
*temp
;
1273 cl_page_list_for_each_safe(clp
, temp
, &queue
->c2_qin
) {
1275 rc
= cl_page_cache_add(env
, io
, clp
, CRT_WRITE
);
1278 result
= result
?: rc
;
1283 static int cl_echo_object_brw(struct echo_object
*eco
, int rw
, obd_off offset
,
1284 struct page
**pages
, int npages
, int async
)
1287 struct echo_thread_info
*info
;
1288 struct cl_object
*obj
= echo_obj2cl(eco
);
1289 struct echo_device
*ed
= eco
->eo_dev
;
1290 struct cl_2queue
*queue
;
1292 struct cl_page
*clp
;
1293 struct lustre_handle lh
= { 0 };
1294 int page_size
= cl_page_size(obj
);
1299 LASSERT((offset
& ~CFS_PAGE_MASK
) == 0);
1300 LASSERT(ed
->ed_next
!= NULL
);
1301 env
= cl_env_get(&refcheck
);
1303 return PTR_ERR(env
);
1305 info
= echo_env_info(env
);
1307 queue
= &info
->eti_queue
;
1309 cl_2queue_init(queue
);
1311 io
->ci_ignore_layout
= 1;
1312 rc
= cl_io_init(env
, io
, CIT_MISC
, obj
);
1318 rc
= cl_echo_enqueue0(env
, eco
, offset
,
1319 offset
+ npages
* PAGE_CACHE_SIZE
- 1,
1320 rw
== READ
? LCK_PR
: LCK_PW
, &lh
.cookie
,
1323 GOTO(error_lock
, rc
);
1325 for (i
= 0; i
< npages
; i
++) {
1327 clp
= cl_page_find(env
, obj
, cl_index(obj
, offset
),
1328 pages
[i
], CPT_TRANSIENT
);
1333 LASSERT(clp
->cp_type
== CPT_TRANSIENT
);
1335 rc
= cl_page_own(env
, io
, clp
);
1337 LASSERT(clp
->cp_state
== CPS_FREEING
);
1338 cl_page_put(env
, clp
);
1342 cl_2queue_add(queue
, clp
);
1344 /* drop the reference count for cl_page_find, so that the page
1345 * will be freed in cl_2queue_fini. */
1346 cl_page_put(env
, clp
);
1347 cl_page_clip(env
, clp
, 0, page_size
);
1349 offset
+= page_size
;
1353 enum cl_req_type typ
= rw
== READ
? CRT_READ
: CRT_WRITE
;
1355 async
= async
&& (typ
== CRT_WRITE
);
1357 rc
= cl_echo_async_brw(env
, io
, typ
, queue
);
1359 rc
= cl_io_submit_sync(env
, io
, typ
, queue
, 0);
1360 CDEBUG(D_INFO
, "echo_client %s write returns %d\n",
1361 async
? "async" : "sync", rc
);
1364 cl_echo_cancel0(env
, ed
, lh
.cookie
);
1366 cl_2queue_discard(env
, io
, queue
);
1367 cl_2queue_disown(env
, io
, queue
);
1368 cl_2queue_fini(env
, queue
);
1369 cl_io_fini(env
, io
);
1371 cl_env_put(env
, &refcheck
);
1374 /** @} echo_exports */
1377 static obd_id last_object_id
;
1380 echo_copyout_lsm (struct lov_stripe_md
*lsm
, void *_ulsm
, int ulsm_nob
)
1382 struct lov_stripe_md
*ulsm
= _ulsm
;
1385 nob
= offsetof (struct lov_stripe_md
, lsm_oinfo
[lsm
->lsm_stripe_count
]);
1389 if (copy_to_user (ulsm
, lsm
, sizeof(*ulsm
)))
1392 for (i
= 0; i
< lsm
->lsm_stripe_count
; i
++) {
1393 if (copy_to_user (ulsm
->lsm_oinfo
[i
], lsm
->lsm_oinfo
[i
],
1394 sizeof(lsm
->lsm_oinfo
[0])))
1401 echo_copyin_lsm (struct echo_device
*ed
, struct lov_stripe_md
*lsm
,
1402 void *ulsm
, int ulsm_nob
)
1404 struct echo_client_obd
*ec
= ed
->ed_ec
;
1407 if (ulsm_nob
< sizeof (*lsm
))
1410 if (copy_from_user (lsm
, ulsm
, sizeof (*lsm
)))
1413 if (lsm
->lsm_stripe_count
> ec
->ec_nstripes
||
1414 lsm
->lsm_magic
!= LOV_MAGIC
||
1415 (lsm
->lsm_stripe_size
& (~CFS_PAGE_MASK
)) != 0 ||
1416 ((__u64
)lsm
->lsm_stripe_size
* lsm
->lsm_stripe_count
> ~0UL))
1420 for (i
= 0; i
< lsm
->lsm_stripe_count
; i
++) {
1421 if (copy_from_user(lsm
->lsm_oinfo
[i
],
1422 ((struct lov_stripe_md
*)ulsm
)-> \
1424 sizeof(lsm
->lsm_oinfo
[0])))
1430 static inline void echo_md_build_name(struct lu_name
*lname
, char *name
,
1433 sprintf(name
, LPU64
, id
);
1434 lname
->ln_name
= name
;
1435 lname
->ln_namelen
= strlen(name
);
1438 /* similar to mdt_attr_get_complex */
1439 static int echo_big_lmm_get(const struct lu_env
*env
, struct md_object
*o
,
1442 struct echo_thread_info
*info
= echo_env_info(env
);
1445 LASSERT(ma
->ma_lmm_size
> 0);
1447 rc
= mo_xattr_get(env
, o
, &LU_BUF_NULL
, XATTR_NAME_LOV
);
1451 /* big_lmm may need to be grown */
1452 if (info
->eti_big_lmmsize
< rc
) {
1453 int size
= size_roundup_power2(rc
);
1455 if (info
->eti_big_lmmsize
> 0) {
1456 /* free old buffer */
1457 LASSERT(info
->eti_big_lmm
);
1458 OBD_FREE_LARGE(info
->eti_big_lmm
,
1459 info
->eti_big_lmmsize
);
1460 info
->eti_big_lmm
= NULL
;
1461 info
->eti_big_lmmsize
= 0;
1464 OBD_ALLOC_LARGE(info
->eti_big_lmm
, size
);
1465 if (info
->eti_big_lmm
== NULL
)
1467 info
->eti_big_lmmsize
= size
;
1469 LASSERT(info
->eti_big_lmmsize
>= rc
);
1471 info
->eti_buf
.lb_buf
= info
->eti_big_lmm
;
1472 info
->eti_buf
.lb_len
= info
->eti_big_lmmsize
;
1473 rc
= mo_xattr_get(env
, o
, &info
->eti_buf
, XATTR_NAME_LOV
);
1477 ma
->ma_valid
|= MA_LOV
;
1478 ma
->ma_lmm
= info
->eti_big_lmm
;
1479 ma
->ma_lmm_size
= rc
;
1484 int echo_attr_get_complex(const struct lu_env
*env
, struct md_object
*next
,
1487 struct echo_thread_info
*info
= echo_env_info(env
);
1488 struct lu_buf
*buf
= &info
->eti_buf
;
1489 umode_t mode
= lu_object_attr(&next
->mo_lu
);
1490 int need
= ma
->ma_need
;
1495 if (need
& MA_INODE
) {
1496 ma
->ma_need
= MA_INODE
;
1497 rc
= mo_attr_get(env
, next
, ma
);
1500 ma
->ma_valid
|= MA_INODE
;
1503 if (need
& MA_LOV
) {
1504 if (S_ISREG(mode
) || S_ISDIR(mode
)) {
1505 LASSERT(ma
->ma_lmm_size
> 0);
1506 buf
->lb_buf
= ma
->ma_lmm
;
1507 buf
->lb_len
= ma
->ma_lmm_size
;
1508 rc2
= mo_xattr_get(env
, next
, buf
, XATTR_NAME_LOV
);
1510 ma
->ma_lmm_size
= rc2
;
1511 ma
->ma_valid
|= MA_LOV
;
1512 } else if (rc2
== -ENODATA
) {
1514 ma
->ma_lmm_size
= 0;
1515 } else if (rc2
== -ERANGE
) {
1516 rc2
= echo_big_lmm_get(env
, next
, ma
);
1518 GOTO(out
, rc
= rc2
);
1520 GOTO(out
, rc
= rc2
);
1525 #ifdef CONFIG_FS_POSIX_ACL
1526 if (need
& MA_ACL_DEF
&& S_ISDIR(mode
)) {
1527 buf
->lb_buf
= ma
->ma_acl
;
1528 buf
->lb_len
= ma
->ma_acl_size
;
1529 rc2
= mo_xattr_get(env
, next
, buf
, XATTR_NAME_ACL_DEFAULT
);
1531 ma
->ma_acl_size
= rc2
;
1532 ma
->ma_valid
|= MA_ACL_DEF
;
1533 } else if (rc2
== -ENODATA
) {
1535 ma
->ma_acl_size
= 0;
1537 GOTO(out
, rc
= rc2
);
1543 CDEBUG(D_INODE
, "after getattr rc = %d, ma_valid = "LPX64
" ma_lmm=%p\n",
1544 rc
, ma
->ma_valid
, ma
->ma_lmm
);
1549 echo_md_create_internal(const struct lu_env
*env
, struct echo_device
*ed
,
1550 struct md_object
*parent
, struct lu_fid
*fid
,
1551 struct lu_name
*lname
, struct md_op_spec
*spec
,
1554 struct lu_object
*ec_child
, *child
;
1555 struct lu_device
*ld
= ed
->ed_next
;
1556 struct echo_thread_info
*info
= echo_env_info(env
);
1557 struct lu_fid
*fid2
= &info
->eti_fid2
;
1558 struct lu_object_conf conf
= { .loc_flags
= LOC_F_NEW
};
1561 rc
= mdo_lookup(env
, parent
, lname
, fid2
, spec
);
1564 else if (rc
!= -ENOENT
)
1567 ec_child
= lu_object_find_at(env
, &ed
->ed_cl
.cd_lu_dev
,
1569 if (IS_ERR(ec_child
)) {
1570 CERROR("Can not find the child "DFID
": rc = %ld\n", PFID(fid
),
1572 return PTR_ERR(ec_child
);
1575 child
= lu_object_locate(ec_child
->lo_header
, ld
->ld_type
);
1576 if (child
== NULL
) {
1577 CERROR("Can not locate the child "DFID
"\n", PFID(fid
));
1578 GOTO(out_put
, rc
= -EINVAL
);
1581 CDEBUG(D_RPCTRACE
, "Start creating object "DFID
" %s %p\n",
1582 PFID(lu_object_fid(&parent
->mo_lu
)), lname
->ln_name
, parent
);
1585 * Do not perform lookup sanity check. We know that name does not exist.
1587 spec
->sp_cr_lookup
= 0;
1588 rc
= mdo_create(env
, parent
, lname
, lu2md(child
), spec
, ma
);
1590 CERROR("Can not create child "DFID
": rc = %d\n", PFID(fid
), rc
);
1593 CDEBUG(D_RPCTRACE
, "End creating object "DFID
" %s %p rc = %d\n",
1594 PFID(lu_object_fid(&parent
->mo_lu
)), lname
->ln_name
, parent
, rc
);
1596 lu_object_put(env
, ec_child
);
1600 static int echo_set_lmm_size(const struct lu_env
*env
, struct lu_device
*ld
,
1603 struct echo_thread_info
*info
= echo_env_info(env
);
1605 if (strcmp(ld
->ld_type
->ldt_name
, LUSTRE_MDD_NAME
)) {
1606 ma
->ma_lmm
= (void *)&info
->eti_lmm
;
1607 ma
->ma_lmm_size
= sizeof(info
->eti_lmm
);
1609 LASSERT(info
->eti_big_lmmsize
);
1610 ma
->ma_lmm
= info
->eti_big_lmm
;
1611 ma
->ma_lmm_size
= info
->eti_big_lmmsize
;
1617 static int echo_create_md_object(const struct lu_env
*env
,
1618 struct echo_device
*ed
,
1619 struct lu_object
*ec_parent
,
1621 char *name
, int namelen
,
1622 __u64 id
, __u32 mode
, int count
,
1623 int stripe_count
, int stripe_offset
)
1625 struct lu_object
*parent
;
1626 struct echo_thread_info
*info
= echo_env_info(env
);
1627 struct lu_name
*lname
= &info
->eti_lname
;
1628 struct md_op_spec
*spec
= &info
->eti_spec
;
1629 struct md_attr
*ma
= &info
->eti_ma
;
1630 struct lu_device
*ld
= ed
->ed_next
;
1634 if (ec_parent
== NULL
)
1636 parent
= lu_object_locate(ec_parent
->lo_header
, ld
->ld_type
);
1640 memset(ma
, 0, sizeof(*ma
));
1641 memset(spec
, 0, sizeof(*spec
));
1642 if (stripe_count
!= 0) {
1643 spec
->sp_cr_flags
|= FMODE_WRITE
;
1644 echo_set_lmm_size(env
, ld
, ma
);
1645 if (stripe_count
!= -1) {
1646 struct lov_user_md_v3
*lum
= &info
->eti_lum
;
1648 lum
->lmm_magic
= LOV_USER_MAGIC_V3
;
1649 lum
->lmm_stripe_count
= stripe_count
;
1650 lum
->lmm_stripe_offset
= stripe_offset
;
1651 lum
->lmm_pattern
= 0;
1652 spec
->u
.sp_ea
.eadata
= lum
;
1653 spec
->u
.sp_ea
.eadatalen
= sizeof(*lum
);
1654 spec
->sp_cr_flags
|= MDS_OPEN_HAS_EA
;
1658 ma
->ma_attr
.la_mode
= mode
;
1659 ma
->ma_attr
.la_valid
= LA_CTIME
| LA_MODE
;
1660 ma
->ma_attr
.la_ctime
= cfs_time_current_64();
1663 lname
->ln_name
= name
;
1664 lname
->ln_namelen
= namelen
;
1665 /* If name is specified, only create one object by name */
1666 rc
= echo_md_create_internal(env
, ed
, lu2md(parent
), fid
, lname
,
1671 /* Create multiple object sequenced by id */
1672 for (i
= 0; i
< count
; i
++) {
1673 char *tmp_name
= info
->eti_name
;
1675 echo_md_build_name(lname
, tmp_name
, id
);
1677 rc
= echo_md_create_internal(env
, ed
, lu2md(parent
), fid
, lname
,
1680 CERROR("Can not create child %s: rc = %d\n", tmp_name
,
1691 static struct lu_object
*echo_md_lookup(const struct lu_env
*env
,
1692 struct echo_device
*ed
,
1693 struct md_object
*parent
,
1694 struct lu_name
*lname
)
1696 struct echo_thread_info
*info
= echo_env_info(env
);
1697 struct lu_fid
*fid
= &info
->eti_fid
;
1698 struct lu_object
*child
;
1701 CDEBUG(D_INFO
, "lookup %s in parent "DFID
" %p\n", lname
->ln_name
,
1703 rc
= mdo_lookup(env
, parent
, lname
, fid
, NULL
);
1705 CERROR("lookup %s: rc = %d\n", lname
->ln_name
, rc
);
1709 /* In the function below, .hs_keycmp resolves to
1710 * lu_obj_hop_keycmp() */
1711 /* coverity[overrun-buffer-val] */
1712 child
= lu_object_find_at(env
, &ed
->ed_cl
.cd_lu_dev
, fid
, NULL
);
1717 static int echo_setattr_object(const struct lu_env
*env
,
1718 struct echo_device
*ed
,
1719 struct lu_object
*ec_parent
,
1720 __u64 id
, int count
)
1722 struct lu_object
*parent
;
1723 struct echo_thread_info
*info
= echo_env_info(env
);
1724 struct lu_name
*lname
= &info
->eti_lname
;
1725 char *name
= info
->eti_name
;
1726 struct lu_device
*ld
= ed
->ed_next
;
1727 struct lu_buf
*buf
= &info
->eti_buf
;
1731 if (ec_parent
== NULL
)
1733 parent
= lu_object_locate(ec_parent
->lo_header
, ld
->ld_type
);
1737 for (i
= 0; i
< count
; i
++) {
1738 struct lu_object
*ec_child
, *child
;
1740 echo_md_build_name(lname
, name
, id
);
1742 ec_child
= echo_md_lookup(env
, ed
, lu2md(parent
), lname
);
1743 if (IS_ERR(ec_child
)) {
1744 CERROR("Can't find child %s: rc = %ld\n",
1745 lname
->ln_name
, PTR_ERR(ec_child
));
1746 return PTR_ERR(ec_child
);
1749 child
= lu_object_locate(ec_child
->lo_header
, ld
->ld_type
);
1750 if (child
== NULL
) {
1751 CERROR("Can not locate the child %s\n", lname
->ln_name
);
1752 lu_object_put(env
, ec_child
);
1757 CDEBUG(D_RPCTRACE
, "Start setattr object "DFID
"\n",
1758 PFID(lu_object_fid(child
)));
1760 buf
->lb_buf
= info
->eti_xattr_buf
;
1761 buf
->lb_len
= sizeof(info
->eti_xattr_buf
);
1763 sprintf(name
, "%s.test1", XATTR_USER_PREFIX
);
1764 rc
= mo_xattr_set(env
, lu2md(child
), buf
, name
,
1767 CERROR("Can not setattr child "DFID
": rc = %d\n",
1768 PFID(lu_object_fid(child
)), rc
);
1769 lu_object_put(env
, ec_child
);
1772 CDEBUG(D_RPCTRACE
, "End setattr object "DFID
"\n",
1773 PFID(lu_object_fid(child
)));
1775 lu_object_put(env
, ec_child
);
1780 static int echo_getattr_object(const struct lu_env
*env
,
1781 struct echo_device
*ed
,
1782 struct lu_object
*ec_parent
,
1783 __u64 id
, int count
)
1785 struct lu_object
*parent
;
1786 struct echo_thread_info
*info
= echo_env_info(env
);
1787 struct lu_name
*lname
= &info
->eti_lname
;
1788 char *name
= info
->eti_name
;
1789 struct md_attr
*ma
= &info
->eti_ma
;
1790 struct lu_device
*ld
= ed
->ed_next
;
1794 if (ec_parent
== NULL
)
1796 parent
= lu_object_locate(ec_parent
->lo_header
, ld
->ld_type
);
1800 memset(ma
, 0, sizeof(*ma
));
1801 ma
->ma_need
|= MA_INODE
| MA_LOV
| MA_PFID
| MA_HSM
| MA_ACL_DEF
;
1802 ma
->ma_acl
= info
->eti_xattr_buf
;
1803 ma
->ma_acl_size
= sizeof(info
->eti_xattr_buf
);
1805 for (i
= 0; i
< count
; i
++) {
1806 struct lu_object
*ec_child
, *child
;
1809 echo_md_build_name(lname
, name
, id
);
1810 echo_set_lmm_size(env
, ld
, ma
);
1812 ec_child
= echo_md_lookup(env
, ed
, lu2md(parent
), lname
);
1813 if (IS_ERR(ec_child
)) {
1814 CERROR("Can't find child %s: rc = %ld\n",
1815 lname
->ln_name
, PTR_ERR(ec_child
));
1816 return PTR_ERR(ec_child
);
1819 child
= lu_object_locate(ec_child
->lo_header
, ld
->ld_type
);
1820 if (child
== NULL
) {
1821 CERROR("Can not locate the child %s\n", lname
->ln_name
);
1822 lu_object_put(env
, ec_child
);
1826 CDEBUG(D_RPCTRACE
, "Start getattr object "DFID
"\n",
1827 PFID(lu_object_fid(child
)));
1828 rc
= echo_attr_get_complex(env
, lu2md(child
), ma
);
1830 CERROR("Can not getattr child "DFID
": rc = %d\n",
1831 PFID(lu_object_fid(child
)), rc
);
1832 lu_object_put(env
, ec_child
);
1835 CDEBUG(D_RPCTRACE
, "End getattr object "DFID
"\n",
1836 PFID(lu_object_fid(child
)));
1838 lu_object_put(env
, ec_child
);
1844 static int echo_lookup_object(const struct lu_env
*env
,
1845 struct echo_device
*ed
,
1846 struct lu_object
*ec_parent
,
1847 __u64 id
, int count
)
1849 struct lu_object
*parent
;
1850 struct echo_thread_info
*info
= echo_env_info(env
);
1851 struct lu_name
*lname
= &info
->eti_lname
;
1852 char *name
= info
->eti_name
;
1853 struct lu_fid
*fid
= &info
->eti_fid
;
1854 struct lu_device
*ld
= ed
->ed_next
;
1858 if (ec_parent
== NULL
)
1860 parent
= lu_object_locate(ec_parent
->lo_header
, ld
->ld_type
);
1864 /*prepare the requests*/
1865 for (i
= 0; i
< count
; i
++) {
1866 echo_md_build_name(lname
, name
, id
);
1868 CDEBUG(D_RPCTRACE
, "Start lookup object "DFID
" %s %p\n",
1869 PFID(lu_object_fid(parent
)), lname
->ln_name
, parent
);
1871 rc
= mdo_lookup(env
, lu2md(parent
), lname
, fid
, NULL
);
1873 CERROR("Can not lookup child %s: rc = %d\n", name
, rc
);
1876 CDEBUG(D_RPCTRACE
, "End lookup object "DFID
" %s %p\n",
1877 PFID(lu_object_fid(parent
)), lname
->ln_name
, parent
);
1884 static int echo_md_destroy_internal(const struct lu_env
*env
,
1885 struct echo_device
*ed
,
1886 struct md_object
*parent
,
1887 struct lu_name
*lname
,
1890 struct lu_device
*ld
= ed
->ed_next
;
1891 struct lu_object
*ec_child
;
1892 struct lu_object
*child
;
1895 ec_child
= echo_md_lookup(env
, ed
, parent
, lname
);
1896 if (IS_ERR(ec_child
)) {
1897 CERROR("Can't find child %s: rc = %ld\n", lname
->ln_name
,
1899 return PTR_ERR(ec_child
);
1902 child
= lu_object_locate(ec_child
->lo_header
, ld
->ld_type
);
1903 if (child
== NULL
) {
1904 CERROR("Can not locate the child %s\n", lname
->ln_name
);
1905 GOTO(out_put
, rc
= -EINVAL
);
1908 CDEBUG(D_RPCTRACE
, "Start destroy object "DFID
" %s %p\n",
1909 PFID(lu_object_fid(&parent
->mo_lu
)), lname
->ln_name
, parent
);
1911 rc
= mdo_unlink(env
, parent
, lu2md(child
), lname
, ma
, 0);
1913 CERROR("Can not unlink child %s: rc = %d\n",
1914 lname
->ln_name
, rc
);
1917 CDEBUG(D_RPCTRACE
, "End destroy object "DFID
" %s %p\n",
1918 PFID(lu_object_fid(&parent
->mo_lu
)), lname
->ln_name
, parent
);
1920 lu_object_put(env
, ec_child
);
1924 static int echo_destroy_object(const struct lu_env
*env
,
1925 struct echo_device
*ed
,
1926 struct lu_object
*ec_parent
,
1927 char *name
, int namelen
,
1928 __u64 id
, __u32 mode
,
1931 struct echo_thread_info
*info
= echo_env_info(env
);
1932 struct lu_name
*lname
= &info
->eti_lname
;
1933 struct md_attr
*ma
= &info
->eti_ma
;
1934 struct lu_device
*ld
= ed
->ed_next
;
1935 struct lu_object
*parent
;
1939 parent
= lu_object_locate(ec_parent
->lo_header
, ld
->ld_type
);
1943 memset(ma
, 0, sizeof(*ma
));
1944 ma
->ma_attr
.la_mode
= mode
;
1945 ma
->ma_attr
.la_valid
= LA_CTIME
;
1946 ma
->ma_attr
.la_ctime
= cfs_time_current_64();
1947 ma
->ma_need
= MA_INODE
;
1951 lname
->ln_name
= name
;
1952 lname
->ln_namelen
= namelen
;
1953 rc
= echo_md_destroy_internal(env
, ed
, lu2md(parent
), lname
,
1958 /*prepare the requests*/
1959 for (i
= 0; i
< count
; i
++) {
1960 char *tmp_name
= info
->eti_name
;
1963 echo_md_build_name(lname
, tmp_name
, id
);
1965 rc
= echo_md_destroy_internal(env
, ed
, lu2md(parent
), lname
,
1968 CERROR("Can not unlink child %s: rc = %d\n", name
, rc
);
1977 static struct lu_object
*echo_resolve_path(const struct lu_env
*env
,
1978 struct echo_device
*ed
, char *path
,
1981 struct lu_device
*ld
= ed
->ed_next
;
1982 struct md_device
*md
= lu2md_dev(ld
);
1983 struct echo_thread_info
*info
= echo_env_info(env
);
1984 struct lu_fid
*fid
= &info
->eti_fid
;
1985 struct lu_name
*lname
= &info
->eti_lname
;
1986 struct lu_object
*parent
= NULL
;
1987 struct lu_object
*child
= NULL
;
1990 /*Only support MDD layer right now*/
1991 rc
= md
->md_ops
->mdo_root_get(env
, md
, fid
);
1993 CERROR("get root error: rc = %d\n", rc
);
1997 /* In the function below, .hs_keycmp resolves to
1998 * lu_obj_hop_keycmp() */
1999 /* coverity[overrun-buffer-val] */
2000 parent
= lu_object_find_at(env
, &ed
->ed_cl
.cd_lu_dev
, fid
, NULL
);
2001 if (IS_ERR(parent
)) {
2002 CERROR("Can not find the parent "DFID
": rc = %ld\n",
2003 PFID(fid
), PTR_ERR(parent
));
2008 struct lu_object
*ld_parent
;
2011 e
= strsep(&path
, "/");
2016 if (!path
|| path
[0] == '\0')
2022 lname
->ln_namelen
= strlen(e
);
2024 ld_parent
= lu_object_locate(parent
->lo_header
, ld
->ld_type
);
2025 if (ld_parent
== NULL
) {
2026 lu_object_put(env
, parent
);
2031 child
= echo_md_lookup(env
, ed
, lu2md(ld_parent
), lname
);
2032 lu_object_put(env
, parent
);
2033 if (IS_ERR(child
)) {
2034 rc
= (int)PTR_ERR(child
);
2035 CERROR("lookup %s under parent "DFID
": rc = %d\n",
2036 lname
->ln_name
, PFID(lu_object_fid(ld_parent
)),
2048 static void echo_ucred_init(struct lu_env
*env
)
2050 struct lu_ucred
*ucred
= lu_ucred(env
);
2052 ucred
->uc_valid
= UCRED_INVALID
;
2054 ucred
->uc_suppgids
[0] = -1;
2055 ucred
->uc_suppgids
[1] = -1;
2057 ucred
->uc_uid
= ucred
->uc_o_uid
=
2058 from_kuid(&init_user_ns
, current_uid());
2059 ucred
->uc_gid
= ucred
->uc_o_gid
=
2060 from_kgid(&init_user_ns
, current_gid());
2061 ucred
->uc_fsuid
= ucred
->uc_o_fsuid
=
2062 from_kuid(&init_user_ns
, current_fsuid());
2063 ucred
->uc_fsgid
= ucred
->uc_o_fsgid
=
2064 from_kgid(&init_user_ns
, current_fsgid());
2065 ucred
->uc_cap
= cfs_curproc_cap_pack();
2067 /* remove fs privilege for non-root user. */
2068 if (ucred
->uc_fsuid
)
2069 ucred
->uc_cap
&= ~CFS_CAP_FS_MASK
;
2070 ucred
->uc_valid
= UCRED_NEW
;
2073 static void echo_ucred_fini(struct lu_env
*env
)
2075 struct lu_ucred
*ucred
= lu_ucred(env
);
2076 ucred
->uc_valid
= UCRED_INIT
;
2079 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_MD_THREAD)
2080 #define ECHO_MD_SES_TAG (LCT_REMEMBER | LCT_SESSION)
2081 static int echo_md_handler(struct echo_device
*ed
, int command
,
2082 char *path
, int path_len
, __u64 id
, int count
,
2083 struct obd_ioctl_data
*data
)
2085 struct echo_thread_info
*info
;
2086 struct lu_device
*ld
= ed
->ed_next
;
2089 struct lu_object
*parent
;
2091 int namelen
= data
->ioc_plen2
;
2095 CERROR("MD echo client is not being initialized properly\n");
2099 if (strcmp(ld
->ld_type
->ldt_name
, LUSTRE_MDD_NAME
)) {
2100 CERROR("Only support MDD layer right now!\n");
2104 env
= cl_env_get(&refcheck
);
2106 return PTR_ERR(env
);
2108 rc
= lu_env_refill_by_tags(env
, ECHO_MD_CTX_TAG
, ECHO_MD_SES_TAG
);
2112 /* init big_lmm buffer */
2113 info
= echo_env_info(env
);
2114 LASSERT(info
->eti_big_lmm
== NULL
);
2115 OBD_ALLOC_LARGE(info
->eti_big_lmm
, MIN_MD_SIZE
);
2116 if (info
->eti_big_lmm
== NULL
)
2117 GOTO(out_env
, rc
= -ENOMEM
);
2118 info
->eti_big_lmmsize
= MIN_MD_SIZE
;
2120 parent
= echo_resolve_path(env
, ed
, path
, path_len
);
2121 if (IS_ERR(parent
)) {
2122 CERROR("Can not resolve the path %s: rc = %ld\n", path
,
2124 GOTO(out_free
, rc
= PTR_ERR(parent
));
2128 OBD_ALLOC(name
, namelen
+ 1);
2130 GOTO(out_put
, rc
= -ENOMEM
);
2131 if (copy_from_user(name
, data
->ioc_pbuf2
, namelen
))
2132 GOTO(out_name
, rc
= -EFAULT
);
2135 echo_ucred_init(env
);
2138 case ECHO_MD_CREATE
:
2139 case ECHO_MD_MKDIR
: {
2140 struct echo_thread_info
*info
= echo_env_info(env
);
2141 __u32 mode
= data
->ioc_obdo2
.o_mode
;
2142 struct lu_fid
*fid
= &info
->eti_fid
;
2143 int stripe_count
= (int)data
->ioc_obdo2
.o_misc
;
2144 int stripe_index
= (int)data
->ioc_obdo2
.o_stripe_idx
;
2146 rc
= ostid_to_fid(fid
, &data
->ioc_obdo1
.o_oi
, 0);
2150 /* In the function below, .hs_keycmp resolves to
2151 * lu_obj_hop_keycmp() */
2152 /* coverity[overrun-buffer-val] */
2153 rc
= echo_create_md_object(env
, ed
, parent
, fid
, name
, namelen
,
2154 id
, mode
, count
, stripe_count
,
2158 case ECHO_MD_DESTROY
:
2159 case ECHO_MD_RMDIR
: {
2160 __u32 mode
= data
->ioc_obdo2
.o_mode
;
2162 rc
= echo_destroy_object(env
, ed
, parent
, name
, namelen
,
2166 case ECHO_MD_LOOKUP
:
2167 rc
= echo_lookup_object(env
, ed
, parent
, id
, count
);
2169 case ECHO_MD_GETATTR
:
2170 rc
= echo_getattr_object(env
, ed
, parent
, id
, count
);
2172 case ECHO_MD_SETATTR
:
2173 rc
= echo_setattr_object(env
, ed
, parent
, id
, count
);
2176 CERROR("unknown command %d\n", command
);
2180 echo_ucred_fini(env
);
2184 OBD_FREE(name
, namelen
+ 1);
2186 lu_object_put(env
, parent
);
2188 LASSERT(info
->eti_big_lmm
);
2189 OBD_FREE_LARGE(info
->eti_big_lmm
, info
->eti_big_lmmsize
);
2190 info
->eti_big_lmm
= NULL
;
2191 info
->eti_big_lmmsize
= 0;
2193 cl_env_put(env
, &refcheck
);
2197 static int echo_create_object(const struct lu_env
*env
, struct echo_device
*ed
,
2198 int on_target
, struct obdo
*oa
, void *ulsm
,
2199 int ulsm_nob
, struct obd_trans_info
*oti
)
2201 struct echo_object
*eco
;
2202 struct echo_client_obd
*ec
= ed
->ed_ec
;
2203 struct lov_stripe_md
*lsm
= NULL
;
2207 if ((oa
->o_valid
& OBD_MD_FLID
) == 0 && /* no obj id */
2208 (on_target
|| /* set_stripe */
2209 ec
->ec_nstripes
!= 0)) { /* LOV */
2210 CERROR ("No valid oid\n");
2214 rc
= echo_alloc_memmd(ed
, &lsm
);
2216 CERROR("Cannot allocate md: rc = %d\n", rc
);
2223 rc
= echo_copyin_lsm (ed
, lsm
, ulsm
, ulsm_nob
);
2227 if (lsm
->lsm_stripe_count
== 0)
2228 lsm
->lsm_stripe_count
= ec
->ec_nstripes
;
2230 if (lsm
->lsm_stripe_size
== 0)
2231 lsm
->lsm_stripe_size
= PAGE_CACHE_SIZE
;
2235 /* setup stripes: indices + default ids if required */
2236 for (i
= 0; i
< lsm
->lsm_stripe_count
; i
++) {
2237 if (ostid_id(&lsm
->lsm_oinfo
[i
]->loi_oi
) == 0)
2238 lsm
->lsm_oinfo
[i
]->loi_oi
= lsm
->lsm_oi
;
2240 lsm
->lsm_oinfo
[i
]->loi_ost_idx
=
2241 (idx
+ i
) % ec
->ec_nstripes
;
2245 /* setup object ID here for !on_target and LOV hint */
2246 if (oa
->o_valid
& OBD_MD_FLID
) {
2247 LASSERT(oa
->o_valid
& OBD_MD_FLGROUP
);
2248 lsm
->lsm_oi
= oa
->o_oi
;
2251 if (ostid_id(&lsm
->lsm_oi
) == 0)
2252 ostid_set_id(&lsm
->lsm_oi
, ++last_object_id
);
2256 /* Only echo objects are allowed to be created */
2257 LASSERT((oa
->o_valid
& OBD_MD_FLGROUP
) &&
2258 (ostid_seq(&oa
->o_oi
) == FID_SEQ_ECHO
));
2259 rc
= obd_create(env
, ec
->ec_exp
, oa
, &lsm
, oti
);
2261 CERROR("Cannot create objects: rc = %d\n", rc
);
2267 /* See what object ID we were given */
2268 oa
->o_oi
= lsm
->lsm_oi
;
2269 oa
->o_valid
|= OBD_MD_FLID
;
2271 eco
= cl_echo_object_find(ed
, &lsm
);
2273 GOTO(failed
, rc
= PTR_ERR(eco
));
2274 cl_echo_object_put(eco
);
2276 CDEBUG(D_INFO
, "oa oid "DOSTID
"\n", POSTID(&oa
->o_oi
));
2280 obd_destroy(env
, ec
->ec_exp
, oa
, lsm
, oti
, NULL
, NULL
);
2282 echo_free_memmd(ed
, &lsm
);
2284 CERROR("create object failed with: rc = %d\n", rc
);
2288 static int echo_get_object(struct echo_object
**ecop
, struct echo_device
*ed
,
2291 struct lov_stripe_md
*lsm
= NULL
;
2292 struct echo_object
*eco
;
2295 if ((oa
->o_valid
& OBD_MD_FLID
) == 0 || ostid_id(&oa
->o_oi
) == 0) {
2296 /* disallow use of object id 0 */
2297 CERROR ("No valid oid\n");
2301 rc
= echo_alloc_memmd(ed
, &lsm
);
2305 lsm
->lsm_oi
= oa
->o_oi
;
2306 if (!(oa
->o_valid
& OBD_MD_FLGROUP
))
2307 ostid_set_seq_echo(&lsm
->lsm_oi
);
2310 eco
= cl_echo_object_find(ed
, &lsm
);
2316 echo_free_memmd(ed
, &lsm
);
2320 static void echo_put_object(struct echo_object
*eco
)
2322 if (cl_echo_object_put(eco
))
2323 CERROR("echo client: drop an object failed");
2327 echo_get_stripe_off_id (struct lov_stripe_md
*lsm
, obd_off
*offp
, obd_id
*idp
)
2329 unsigned long stripe_count
;
2330 unsigned long stripe_size
;
2331 unsigned long width
;
2332 unsigned long woffset
;
2336 if (lsm
->lsm_stripe_count
<= 1)
2340 stripe_size
= lsm
->lsm_stripe_size
;
2341 stripe_count
= lsm
->lsm_stripe_count
;
2343 /* width = # bytes in all stripes */
2344 width
= stripe_size
* stripe_count
;
2346 /* woffset = offset within a width; offset = whole number of widths */
2347 woffset
= do_div (offset
, width
);
2349 stripe_index
= woffset
/ stripe_size
;
2351 *idp
= ostid_id(&lsm
->lsm_oinfo
[stripe_index
]->loi_oi
);
2352 *offp
= offset
* stripe_size
+ woffset
% stripe_size
;
2356 echo_client_page_debug_setup(struct lov_stripe_md
*lsm
,
2357 struct page
*page
, int rw
, obd_id id
,
2358 obd_off offset
, obd_off count
)
2365 /* no partial pages on the client */
2366 LASSERT(count
== PAGE_CACHE_SIZE
);
2370 for (delta
= 0; delta
< PAGE_CACHE_SIZE
; delta
+= OBD_ECHO_BLOCK_SIZE
) {
2371 if (rw
== OBD_BRW_WRITE
) {
2372 stripe_off
= offset
+ delta
;
2374 echo_get_stripe_off_id(lsm
, &stripe_off
, &stripe_id
);
2376 stripe_off
= 0xdeadbeef00c0ffeeULL
;
2377 stripe_id
= 0xdeadbeef00c0ffeeULL
;
2379 block_debug_setup(addr
+ delta
, OBD_ECHO_BLOCK_SIZE
,
2380 stripe_off
, stripe_id
);
2386 static int echo_client_page_debug_check(struct lov_stripe_md
*lsm
,
2387 struct page
*page
, obd_id id
,
2388 obd_off offset
, obd_off count
)
2397 /* no partial pages on the client */
2398 LASSERT(count
== PAGE_CACHE_SIZE
);
2402 for (rc
= delta
= 0; delta
< PAGE_CACHE_SIZE
; delta
+= OBD_ECHO_BLOCK_SIZE
) {
2403 stripe_off
= offset
+ delta
;
2405 echo_get_stripe_off_id (lsm
, &stripe_off
, &stripe_id
);
2407 rc2
= block_debug_check("test_brw",
2408 addr
+ delta
, OBD_ECHO_BLOCK_SIZE
,
2409 stripe_off
, stripe_id
);
2411 CERROR ("Error in echo object "LPX64
"\n", id
);
2420 static int echo_client_kbrw(struct echo_device
*ed
, int rw
, struct obdo
*oa
,
2421 struct echo_object
*eco
, obd_off offset
,
2422 obd_size count
, int async
,
2423 struct obd_trans_info
*oti
)
2425 struct lov_stripe_md
*lsm
= eco
->eo_lsm
;
2427 struct brw_page
*pga
;
2428 struct brw_page
*pgp
;
2429 struct page
**pages
;
2437 verify
= (ostid_id(&oa
->o_oi
) != ECHO_PERSISTENT_OBJID
&&
2438 (oa
->o_valid
& OBD_MD_FLFLAGS
) != 0 &&
2439 (oa
->o_flags
& OBD_FL_DEBUG_CHECK
) != 0);
2441 gfp_mask
= ((ostid_id(&oa
->o_oi
) & 2) == 0) ? GFP_IOFS
: GFP_HIGHUSER
;
2443 LASSERT(rw
== OBD_BRW_WRITE
|| rw
== OBD_BRW_READ
);
2444 LASSERT(lsm
!= NULL
);
2445 LASSERT(ostid_id(&lsm
->lsm_oi
) == ostid_id(&oa
->o_oi
));
2448 (count
& (~CFS_PAGE_MASK
)) != 0)
2451 /* XXX think again with misaligned I/O */
2452 npages
= count
>> PAGE_CACHE_SHIFT
;
2454 if (rw
== OBD_BRW_WRITE
)
2455 brw_flags
= OBD_BRW_ASYNC
;
2457 OBD_ALLOC(pga
, npages
* sizeof(*pga
));
2461 OBD_ALLOC(pages
, npages
* sizeof(*pages
));
2462 if (pages
== NULL
) {
2463 OBD_FREE(pga
, npages
* sizeof(*pga
));
2467 for (i
= 0, pgp
= pga
, off
= offset
;
2469 i
++, pgp
++, off
+= PAGE_CACHE_SIZE
) {
2471 LASSERT (pgp
->pg
== NULL
); /* for cleanup */
2474 OBD_PAGE_ALLOC(pgp
->pg
, gfp_mask
);
2475 if (pgp
->pg
== NULL
)
2479 pgp
->count
= PAGE_CACHE_SIZE
;
2481 pgp
->flag
= brw_flags
;
2484 echo_client_page_debug_setup(lsm
, pgp
->pg
, rw
,
2485 ostid_id(&oa
->o_oi
), off
,
2489 /* brw mode can only be used at client */
2490 LASSERT(ed
->ed_next
!= NULL
);
2491 rc
= cl_echo_object_brw(eco
, rw
, offset
, pages
, npages
, async
);
2494 if (rc
!= 0 || rw
!= OBD_BRW_READ
)
2497 for (i
= 0, pgp
= pga
; i
< npages
; i
++, pgp
++) {
2498 if (pgp
->pg
== NULL
)
2503 vrc
= echo_client_page_debug_check(lsm
, pgp
->pg
,
2504 ostid_id(&oa
->o_oi
),
2505 pgp
->off
, pgp
->count
);
2506 if (vrc
!= 0 && rc
== 0)
2509 OBD_PAGE_FREE(pgp
->pg
);
2511 OBD_FREE(pga
, npages
* sizeof(*pga
));
2512 OBD_FREE(pages
, npages
* sizeof(*pages
));
2516 static int echo_client_prep_commit(const struct lu_env
*env
,
2517 struct obd_export
*exp
, int rw
,
2518 struct obdo
*oa
, struct echo_object
*eco
,
2519 obd_off offset
, obd_size count
,
2520 obd_size batch
, struct obd_trans_info
*oti
,
2523 struct lov_stripe_md
*lsm
= eco
->eo_lsm
;
2524 struct obd_ioobj ioo
;
2525 struct niobuf_local
*lnb
;
2526 struct niobuf_remote
*rnb
;
2528 obd_size npages
, tot_pages
;
2529 int i
, ret
= 0, brw_flags
= 0;
2531 if (count
<= 0 || (count
& (~CFS_PAGE_MASK
)) != 0 ||
2532 (lsm
!= NULL
&& ostid_id(&lsm
->lsm_oi
) != ostid_id(&oa
->o_oi
)))
2535 npages
= batch
>> PAGE_CACHE_SHIFT
;
2536 tot_pages
= count
>> PAGE_CACHE_SHIFT
;
2538 OBD_ALLOC(lnb
, npages
* sizeof(struct niobuf_local
));
2539 OBD_ALLOC(rnb
, npages
* sizeof(struct niobuf_remote
));
2541 if (lnb
== NULL
|| rnb
== NULL
)
2542 GOTO(out
, ret
= -ENOMEM
);
2544 if (rw
== OBD_BRW_WRITE
&& async
)
2545 brw_flags
|= OBD_BRW_ASYNC
;
2547 obdo_to_ioobj(oa
, &ioo
);
2551 for(; tot_pages
; tot_pages
-= npages
) {
2554 if (tot_pages
< npages
)
2557 for (i
= 0; i
< npages
; i
++, off
+= PAGE_CACHE_SIZE
) {
2558 rnb
[i
].offset
= off
;
2559 rnb
[i
].len
= PAGE_CACHE_SIZE
;
2560 rnb
[i
].flags
= brw_flags
;
2563 ioo
.ioo_bufcnt
= npages
;
2564 oti
->oti_transno
= 0;
2567 ret
= obd_preprw(env
, rw
, exp
, oa
, 1, &ioo
, rnb
, &lpages
,
2571 LASSERT(lpages
== npages
);
2573 for (i
= 0; i
< lpages
; i
++) {
2574 struct page
*page
= lnb
[i
].page
;
2576 /* read past eof? */
2577 if (page
== NULL
&& lnb
[i
].rc
== 0)
2581 lnb
[i
].flags
|= OBD_BRW_ASYNC
;
2583 if (ostid_id(&oa
->o_oi
) == ECHO_PERSISTENT_OBJID
||
2584 (oa
->o_valid
& OBD_MD_FLFLAGS
) == 0 ||
2585 (oa
->o_flags
& OBD_FL_DEBUG_CHECK
) == 0)
2588 if (rw
== OBD_BRW_WRITE
)
2589 echo_client_page_debug_setup(lsm
, page
, rw
,
2590 ostid_id(&oa
->o_oi
),
2594 echo_client_page_debug_check(lsm
, page
,
2595 ostid_id(&oa
->o_oi
),
2600 ret
= obd_commitrw(env
, rw
, exp
, oa
, 1, &ioo
,
2601 rnb
, npages
, lnb
, oti
, ret
);
2605 /* Reset oti otherwise it would confuse ldiskfs. */
2606 memset(oti
, 0, sizeof(*oti
));
2608 /* Reuse env context. */
2609 lu_context_exit((struct lu_context
*)&env
->le_ctx
);
2610 lu_context_enter((struct lu_context
*)&env
->le_ctx
);
2615 OBD_FREE(lnb
, npages
* sizeof(struct niobuf_local
));
2617 OBD_FREE(rnb
, npages
* sizeof(struct niobuf_remote
));
2621 static int echo_client_brw_ioctl(const struct lu_env
*env
, int rw
,
2622 struct obd_export
*exp
,
2623 struct obd_ioctl_data
*data
,
2624 struct obd_trans_info
*dummy_oti
)
2626 struct obd_device
*obd
= class_exp2obd(exp
);
2627 struct echo_device
*ed
= obd2echo_dev(obd
);
2628 struct echo_client_obd
*ec
= ed
->ed_ec
;
2629 struct obdo
*oa
= &data
->ioc_obdo1
;
2630 struct echo_object
*eco
;
2635 LASSERT(oa
->o_valid
& OBD_MD_FLGROUP
);
2637 rc
= echo_get_object(&eco
, ed
, oa
);
2641 oa
->o_valid
&= ~OBD_MD_FLHANDLE
;
2643 /* OFD/obdfilter works only via prep/commit */
2644 test_mode
= (long)data
->ioc_pbuf1
;
2648 if (ed
->ed_next
== NULL
&& test_mode
!= 3) {
2650 data
->ioc_plen1
= data
->ioc_count
;
2653 /* Truncate batch size to maximum */
2654 if (data
->ioc_plen1
> PTLRPC_MAX_BRW_SIZE
)
2655 data
->ioc_plen1
= PTLRPC_MAX_BRW_SIZE
;
2657 switch (test_mode
) {
2661 rc
= echo_client_kbrw(ed
, rw
, oa
,
2662 eco
, data
->ioc_offset
,
2663 data
->ioc_count
, async
, dummy_oti
);
2666 rc
= echo_client_prep_commit(env
, ec
->ec_exp
, rw
, oa
,
2667 eco
, data
->ioc_offset
,
2668 data
->ioc_count
, data
->ioc_plen1
,
2674 echo_put_object(eco
);
2679 echo_client_enqueue(struct obd_export
*exp
, struct obdo
*oa
,
2680 int mode
, obd_off offset
, obd_size nob
)
2682 struct echo_device
*ed
= obd2echo_dev(exp
->exp_obd
);
2683 struct lustre_handle
*ulh
= &oa
->o_handle
;
2684 struct echo_object
*eco
;
2688 if (ed
->ed_next
== NULL
)
2691 if (!(mode
== LCK_PR
|| mode
== LCK_PW
))
2694 if ((offset
& (~CFS_PAGE_MASK
)) != 0 ||
2695 (nob
& (~CFS_PAGE_MASK
)) != 0)
2698 rc
= echo_get_object (&eco
, ed
, oa
);
2702 end
= (nob
== 0) ? ((obd_off
) -1) : (offset
+ nob
- 1);
2703 rc
= cl_echo_enqueue(eco
, offset
, end
, mode
, &ulh
->cookie
);
2705 oa
->o_valid
|= OBD_MD_FLHANDLE
;
2706 CDEBUG(D_INFO
, "Cookie is "LPX64
"\n", ulh
->cookie
);
2708 echo_put_object(eco
);
2713 echo_client_cancel(struct obd_export
*exp
, struct obdo
*oa
)
2715 struct echo_device
*ed
= obd2echo_dev(exp
->exp_obd
);
2716 __u64 cookie
= oa
->o_handle
.cookie
;
2718 if ((oa
->o_valid
& OBD_MD_FLHANDLE
) == 0)
2721 CDEBUG(D_INFO
, "Cookie is "LPX64
"\n", cookie
);
2722 return cl_echo_cancel(ed
, cookie
);
2726 echo_client_iocontrol(unsigned int cmd
, struct obd_export
*exp
, int len
,
2727 void *karg
, void *uarg
)
2729 struct obd_device
*obd
= exp
->exp_obd
;
2730 struct echo_device
*ed
= obd2echo_dev(obd
);
2731 struct echo_client_obd
*ec
= ed
->ed_ec
;
2732 struct echo_object
*eco
;
2733 struct obd_ioctl_data
*data
= karg
;
2734 struct obd_trans_info dummy_oti
;
2736 struct oti_req_ack_lock
*ack_lock
;
2739 int rw
= OBD_BRW_READ
;
2743 memset(&dummy_oti
, 0, sizeof(dummy_oti
));
2745 oa
= &data
->ioc_obdo1
;
2746 if (!(oa
->o_valid
& OBD_MD_FLGROUP
)) {
2747 oa
->o_valid
|= OBD_MD_FLGROUP
;
2748 ostid_set_seq_echo(&oa
->o_oi
);
2751 /* This FID is unpacked just for validation at this point */
2752 rc
= ostid_to_fid(&fid
, &oa
->o_oi
, 0);
2760 rc
= lu_env_init(env
, LCT_DT_THREAD
);
2762 GOTO(out
, rc
= -ENOMEM
);
2765 case OBD_IOC_CREATE
: /* may create echo object */
2766 if (!capable(CFS_CAP_SYS_ADMIN
))
2767 GOTO (out
, rc
= -EPERM
);
2769 rc
= echo_create_object(env
, ed
, 1, oa
, data
->ioc_pbuf1
,
2770 data
->ioc_plen1
, &dummy_oti
);
2773 case OBD_IOC_ECHO_MD
: {
2780 if (!capable(CFS_CAP_SYS_ADMIN
))
2781 GOTO(out
, rc
= -EPERM
);
2783 count
= data
->ioc_count
;
2784 cmd
= data
->ioc_command
;
2786 id
= ostid_id(&data
->ioc_obdo2
.o_oi
);
2788 dirlen
= data
->ioc_plen1
;
2789 OBD_ALLOC(dir
, dirlen
+ 1);
2791 GOTO(out
, rc
= -ENOMEM
);
2793 if (copy_from_user(dir
, data
->ioc_pbuf1
, dirlen
)) {
2794 OBD_FREE(dir
, data
->ioc_plen1
+ 1);
2795 GOTO(out
, rc
= -EFAULT
);
2798 rc
= echo_md_handler(ed
, cmd
, dir
, dirlen
, id
, count
, data
);
2799 OBD_FREE(dir
, dirlen
+ 1);
2802 case OBD_IOC_ECHO_ALLOC_SEQ
: {
2803 struct lu_env
*cl_env
;
2808 if (!capable(CFS_CAP_SYS_ADMIN
))
2809 GOTO(out
, rc
= -EPERM
);
2811 cl_env
= cl_env_get(&refcheck
);
2813 GOTO(out
, rc
= PTR_ERR(cl_env
));
2815 rc
= lu_env_refill_by_tags(cl_env
, ECHO_MD_CTX_TAG
,
2818 cl_env_put(cl_env
, &refcheck
);
2822 rc
= seq_client_get_seq(cl_env
, ed
->ed_cl_seq
, &seq
);
2823 cl_env_put(cl_env
, &refcheck
);
2825 CERROR("%s: Can not alloc seq: rc = %d\n",
2830 if (copy_to_user(data
->ioc_pbuf1
, &seq
, data
->ioc_plen1
))
2833 max_count
= LUSTRE_METADATA_SEQ_MAX_WIDTH
;
2834 if (copy_to_user(data
->ioc_pbuf2
, &max_count
,
2839 case OBD_IOC_DESTROY
:
2840 if (!capable(CFS_CAP_SYS_ADMIN
))
2841 GOTO (out
, rc
= -EPERM
);
2843 rc
= echo_get_object(&eco
, ed
, oa
);
2845 rc
= obd_destroy(env
, ec
->ec_exp
, oa
, eco
->eo_lsm
,
2846 &dummy_oti
, NULL
, NULL
);
2848 eco
->eo_deleted
= 1;
2849 echo_put_object(eco
);
2853 case OBD_IOC_GETATTR
:
2854 rc
= echo_get_object(&eco
, ed
, oa
);
2856 struct obd_info oinfo
= { { { 0 } } };
2857 oinfo
.oi_md
= eco
->eo_lsm
;
2859 rc
= obd_getattr(env
, ec
->ec_exp
, &oinfo
);
2860 echo_put_object(eco
);
2864 case OBD_IOC_SETATTR
:
2865 if (!capable(CFS_CAP_SYS_ADMIN
))
2866 GOTO (out
, rc
= -EPERM
);
2868 rc
= echo_get_object(&eco
, ed
, oa
);
2870 struct obd_info oinfo
= { { { 0 } } };
2872 oinfo
.oi_md
= eco
->eo_lsm
;
2874 rc
= obd_setattr(env
, ec
->ec_exp
, &oinfo
, NULL
);
2875 echo_put_object(eco
);
2879 case OBD_IOC_BRW_WRITE
:
2880 if (!capable(CFS_CAP_SYS_ADMIN
))
2881 GOTO (out
, rc
= -EPERM
);
2885 case OBD_IOC_BRW_READ
:
2886 rc
= echo_client_brw_ioctl(env
, rw
, exp
, data
, &dummy_oti
);
2889 case ECHO_IOC_GET_STRIPE
:
2890 rc
= echo_get_object(&eco
, ed
, oa
);
2892 rc
= echo_copyout_lsm(eco
->eo_lsm
, data
->ioc_pbuf1
,
2894 echo_put_object(eco
);
2898 case ECHO_IOC_SET_STRIPE
:
2899 if (!capable(CFS_CAP_SYS_ADMIN
))
2900 GOTO (out
, rc
= -EPERM
);
2902 if (data
->ioc_pbuf1
== NULL
) { /* unset */
2903 rc
= echo_get_object(&eco
, ed
, oa
);
2905 eco
->eo_deleted
= 1;
2906 echo_put_object(eco
);
2909 rc
= echo_create_object(env
, ed
, 0, oa
,
2911 data
->ioc_plen1
, &dummy_oti
);
2915 case ECHO_IOC_ENQUEUE
:
2916 if (!capable(CFS_CAP_SYS_ADMIN
))
2917 GOTO (out
, rc
= -EPERM
);
2919 rc
= echo_client_enqueue(exp
, oa
,
2920 data
->ioc_conn1
, /* lock mode */
2922 data
->ioc_count
);/*extent*/
2925 case ECHO_IOC_CANCEL
:
2926 rc
= echo_client_cancel(exp
, oa
);
2930 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd
);
2931 GOTO (out
, rc
= -ENOTTY
);
2938 /* XXX this should be in a helper also called by target_send_reply */
2939 for (ack_lock
= dummy_oti
.oti_ack_locks
, i
= 0; i
< 4;
2941 if (!ack_lock
->mode
)
2943 ldlm_lock_decref(&ack_lock
->lock
, ack_lock
->mode
);
2949 static int echo_client_setup(const struct lu_env
*env
,
2950 struct obd_device
*obddev
, struct lustre_cfg
*lcfg
)
2952 struct echo_client_obd
*ec
= &obddev
->u
.echo_client
;
2953 struct obd_device
*tgt
;
2954 struct obd_uuid echo_uuid
= { "ECHO_UUID" };
2955 struct obd_connect_data
*ocd
= NULL
;
2958 if (lcfg
->lcfg_bufcount
< 2 || LUSTRE_CFG_BUFLEN(lcfg
, 1) < 1) {
2959 CERROR("requires a TARGET OBD name\n");
2963 tgt
= class_name2obd(lustre_cfg_string(lcfg
, 1));
2964 if (!tgt
|| !tgt
->obd_attached
|| !tgt
->obd_set_up
) {
2965 CERROR("device not attached or not set up (%s)\n",
2966 lustre_cfg_string(lcfg
, 1));
2970 spin_lock_init(&ec
->ec_lock
);
2971 INIT_LIST_HEAD (&ec
->ec_objects
);
2972 INIT_LIST_HEAD (&ec
->ec_locks
);
2974 ec
->ec_nstripes
= 0;
2976 if (!strcmp(tgt
->obd_type
->typ_name
, LUSTRE_MDT_NAME
)) {
2977 lu_context_tags_update(ECHO_MD_CTX_TAG
);
2978 lu_session_tags_update(ECHO_MD_SES_TAG
);
2982 OBD_ALLOC(ocd
, sizeof(*ocd
));
2984 CERROR("Can't alloc ocd connecting to %s\n",
2985 lustre_cfg_string(lcfg
, 1));
2989 ocd
->ocd_connect_flags
= OBD_CONNECT_VERSION
| OBD_CONNECT_REQPORTAL
|
2990 OBD_CONNECT_BRW_SIZE
|
2991 OBD_CONNECT_GRANT
| OBD_CONNECT_FULL20
|
2992 OBD_CONNECT_64BITHASH
| OBD_CONNECT_LVB_TYPE
|
2994 ocd
->ocd_brw_size
= DT_MAX_BRW_SIZE
;
2995 ocd
->ocd_version
= LUSTRE_VERSION_CODE
;
2996 ocd
->ocd_group
= FID_SEQ_ECHO
;
2998 rc
= obd_connect(env
, &ec
->ec_exp
, tgt
, &echo_uuid
, ocd
, NULL
);
3000 /* Turn off pinger because it connects to tgt obd directly. */
3001 spin_lock(&tgt
->obd_dev_lock
);
3002 list_del_init(&ec
->ec_exp
->exp_obd_chain_timed
);
3003 spin_unlock(&tgt
->obd_dev_lock
);
3006 OBD_FREE(ocd
, sizeof(*ocd
));
3009 CERROR("fail to connect to device %s\n",
3010 lustre_cfg_string(lcfg
, 1));
3017 static int echo_client_cleanup(struct obd_device
*obddev
)
3019 struct echo_device
*ed
= obd2echo_dev(obddev
);
3020 struct echo_client_obd
*ec
= &obddev
->u
.echo_client
;
3023 /*Do nothing for Metadata echo client*/
3027 if (ed
->ed_next_ismd
) {
3028 lu_context_tags_clear(ECHO_MD_CTX_TAG
);
3029 lu_session_tags_clear(ECHO_MD_SES_TAG
);
3033 if (!list_empty(&obddev
->obd_exports
)) {
3034 CERROR("still has clients!\n");
3038 LASSERT(atomic_read(&ec
->ec_exp
->exp_refcount
) > 0);
3039 rc
= obd_disconnect(ec
->ec_exp
);
3041 CERROR("fail to disconnect device: %d\n", rc
);
3046 static int echo_client_connect(const struct lu_env
*env
,
3047 struct obd_export
**exp
,
3048 struct obd_device
*src
, struct obd_uuid
*cluuid
,
3049 struct obd_connect_data
*data
, void *localdata
)
3052 struct lustre_handle conn
= { 0 };
3054 rc
= class_connect(&conn
, src
, cluuid
);
3056 *exp
= class_conn2export(&conn
);
3062 static int echo_client_disconnect(struct obd_export
*exp
)
3065 struct obd_device
*obd
;
3066 struct echo_client_obd
*ec
;
3067 struct ec_lock
*ecl
;
3072 GOTO(out
, rc
= -EINVAL
);
3076 ec
= &obd
->u
.echo_client
;
3078 /* no more contention on export's lock list */
3079 while (!list_empty (&exp
->exp_ec_data
.eced_locks
)) {
3080 ecl
= list_entry (exp
->exp_ec_data
.eced_locks
.next
,
3081 struct ec_lock
, ecl_exp_chain
);
3082 list_del (&ecl
->ecl_exp_chain
);
3084 rc
= obd_cancel(ec
->ec_exp
, ecl
->ecl_object
->eco_lsm
,
3085 ecl
->ecl_mode
, &ecl
->ecl_lock_handle
);
3087 CDEBUG (D_INFO
, "Cancel lock on object "LPX64
" on disconnect "
3088 "(%d)\n", ecl
->ecl_object
->eco_id
, rc
);
3090 echo_put_object (ecl
->ecl_object
);
3091 OBD_FREE (ecl
, sizeof (*ecl
));
3095 rc
= class_disconnect(exp
);
3101 static struct obd_ops echo_client_obd_ops
= {
3102 .o_owner
= THIS_MODULE
,
3105 .o_setup
= echo_client_setup
,
3106 .o_cleanup
= echo_client_cleanup
,
3109 .o_iocontrol
= echo_client_iocontrol
,
3110 .o_connect
= echo_client_connect
,
3111 .o_disconnect
= echo_client_disconnect
3114 int echo_client_init(void)
3116 struct lprocfs_static_vars lvars
= { 0 };
3119 lprocfs_echo_init_vars(&lvars
);
3121 rc
= lu_kmem_init(echo_caches
);
3123 rc
= class_register_type(&echo_client_obd_ops
, NULL
,
3125 LUSTRE_ECHO_CLIENT_NAME
,
3128 lu_kmem_fini(echo_caches
);
3133 void echo_client_exit(void)
3135 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME
);
3136 lu_kmem_fini(echo_caches
);
3139 static int __init
obdecho_init(void)
3141 struct lprocfs_static_vars lvars
;
3144 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
3146 LASSERT(PAGE_CACHE_SIZE
% OBD_ECHO_BLOCK_SIZE
== 0);
3148 lprocfs_echo_init_vars(&lvars
);
3151 rc
= echo_client_init();
3156 static void /*__exit*/ obdecho_exit(void)
3162 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3163 MODULE_DESCRIPTION("Lustre Testing Echo OBD driver");
3164 MODULE_LICENSE("GPL");
3165 MODULE_VERSION(LUSTRE_VERSION_STRING
);
3167 module_init(obdecho_init
);
3168 module_exit(obdecho_exit
);
3170 /** @} echo_client */