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) 2007, 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.
40 #include "linux/obd.h"
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
47 #define IOC_MDC_TYPE 'i'
48 #define IOC_MDC_MIN_NR 20
49 #define IOC_MDC_MAX_NR 50
51 #include "lustre/lustre_idl.h"
52 #include "lustre_lib.h"
54 #include "lustre_export.h"
55 #include "lustre_fid.h"
56 #include "lustre_fld.h"
57 #include "lustre_capa.h"
59 #define MAX_OBD_DEVICES 8192
67 struct 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 */
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
;
78 static inline void loi_kms_set(struct lov_oinfo
*oinfo
, __u64 kms
)
81 oinfo
->loi_kms_valid
= 1;
84 static inline void loi_init(struct lov_oinfo
*loi
)
88 struct lov_stripe_md
{
91 pid_t lsm_lock_owner
; /* debugging */
93 /* maximum possible file size, might change as OSTs status changes,
94 * e.g. disconnected, deactivated */
98 struct ost_id lw_object_oi
; /* lov object id/seq */
100 /* LOV-private members start here -- only for use in lov/. */
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 */
109 struct lov_oinfo
*lsm_oinfo
[0];
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
120 static inline bool lsm_is_released(struct lov_stripe_md
*lsm
)
122 return !!(lsm
->lsm_pattern
& LOV_PATTERN_F_RELEASED
);
125 static inline bool lsm_has_objects(struct lov_stripe_md
*lsm
)
129 if (lsm_is_released(lsm
))
134 static inline int lov_stripe_md_size(unsigned int stripe_count
)
136 struct lov_stripe_md lsm
;
138 return sizeof(lsm
) + stripe_count
* sizeof(lsm
.lsm_oinfo
[0]);
143 typedef int (*obd_enqueue_update_f
)(void *cookie
, int rc
);
145 /* obd info for a particular level (lov, osc). */
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
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. */
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
167 * level. E.g. it is used for update lsm->lsm_oinfo at every received
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. */
174 /* transfer jobid from ost_sync() to filter_sync()... */
178 /* compare all relevant fields. */
179 static inline int lov_stripe_md_cmp(struct lov_stripe_md
*m1
,
180 struct lov_stripe_md
*m2
)
183 * ->lsm_wire contains padding, but it should be zeroed out during
186 return memcmp(&m1
->lsm_wire
, &m2
->lsm_wire
, sizeof(m1
->lsm_wire
));
189 static inline int lov_lum_lsm_cmp(struct lov_user_md
*lum
,
190 struct lov_stripe_md
*lsm
)
192 if (lsm
->lsm_magic
!= lum
->lmm_magic
)
194 if ((lsm
->lsm_stripe_count
!= 0) && (lum
->lmm_stripe_count
!= 0) &&
195 (lsm
->lsm_stripe_count
!= lum
->lmm_stripe_count
))
197 if ((lsm
->lsm_stripe_size
!= 0) && (lum
->lmm_stripe_size
!= 0) &&
198 (lsm
->lsm_stripe_size
!= lum
->lmm_stripe_size
))
200 if ((lsm
->lsm_pattern
!= 0) && (lum
->lmm_pattern
!= 0) &&
201 (lsm
->lsm_pattern
!= lum
->lmm_pattern
))
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))
211 static inline int lov_lum_swab_if_needed(struct lov_user_md_v3
*lumv3
,
213 struct lov_user_md
*lum
)
215 if (lum
&& copy_from_user(lumv3
, lum
,sizeof(struct lov_user_md_v1
)))
218 *lmm_magic
= lumv3
->lmm_magic
;
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
)))
226 } else if (*lmm_magic
== __swab32(LOV_USER_MAGIC_V3
)) {
227 if (lum
&& copy_from_user(lumv3
, lum
, sizeof(*lumv3
)))
229 lustre_swab_lov_user_md_v3(lumv3
);
230 *lmm_magic
= LOV_USER_MAGIC_V3
;
231 } else if (*lmm_magic
!= LOV_USER_MAGIC_V1
) {
233 "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
234 *lmm_magic
, LOV_USER_MAGIC_V1
, LOV_USER_MAGIC_V3
);
240 void lov_stripe_lock(struct lov_stripe_md
*md
);
241 void lov_stripe_unlock(struct lov_stripe_md
*md
);
244 struct list_head typ_chain
;
245 struct obd_ops
*typ_dt_ops
;
246 struct md_ops
*typ_md_ops
;
247 struct proc_dir_entry
*typ_procroot
;
250 struct lu_device_type
*typ_lu
;
251 spinlock_t obd_type_lock
;
263 LLOG_CONFIG_ORIG_CTXT
= 0,
264 LLOG_CONFIG_REPL_CTXT
,
265 LLOG_MDS_OST_ORIG_CTXT
,
266 LLOG_MDS_OST_REPL_CTXT
,
273 LLOG_LOVEA_ORIG_CTXT
,
274 LLOG_LOVEA_REPL_CTXT
,
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 */
282 struct timeout_item
{
283 enum timeout_event ti_event
;
284 unsigned long ti_timeout
;
287 struct list_head ti_obd_list
;
288 struct list_head ti_chain
;
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
298 /* possible values for fo_sync_lock_cancel */
300 NEVER_SYNC_ON_CANCEL
= 0,
301 BLOCKING_SYNC_ON_CANCEL
= 1,
302 ALWAYS_SYNC_ON_CANCEL
= 2,
303 NUM_SYNC_ON_CANCEL_STATES
306 #define MDC_MAX_RIF_DEFAULT 8
307 #define MDC_MAX_RIF_MAX 512
312 struct rw_semaphore cl_sem
;
313 struct obd_uuid cl_target_uuid
;
314 struct obd_import
*cl_import
; /* ptlrpc connection state */
316 /* max_mds_easize is purely a performance thing so we don't have to
317 * call obd_size_diskmd() all the time. */
318 int cl_default_mds_easize
;
319 int cl_max_mds_easize
;
320 int cl_default_mds_cookiesize
;
321 int cl_max_mds_cookiesize
;
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 */
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) */
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 */
340 unsigned long cl_next_shrink_grant
; /* jiffies */
341 struct list_head cl_grant_shrink_list
; /* Timeout event list */
342 int cl_grant_shrink_interval
; /* seconds */
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) */
348 int cl_extent_tax
; /* extent overhead, by bytes */
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 */
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.)
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.
368 * NB by Jinshan: though field names are still _loi_, but actually
369 * osc_object{}s are in the list.
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
;
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
;
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 */
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
;
404 struct mdc_rpc_lock
*cl_rpc_lock
;
405 struct mdc_rpc_lock
*cl_close_lock
;
408 struct mutex cl_mgc_mutex
;
409 struct local_oid_storage
*cl_mgc_los
;
410 struct dt_object
*cl_mgc_configs_dir
;
411 atomic_t cl_mgc_refcount
;
412 struct obd_export
*cl_mgc_mgsexp
;
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
;
421 /* also protected by the poorly named _loi_list_lock lock above */
422 struct osc_async_rc cl_ar
;
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"
431 /* sequence manager */
432 struct lu_client_seq
*cl_seq
;
434 atomic_t cl_resends
; /* resend count */
436 /* ptlrpc work for writeback in ptlrpcd context */
437 void *cl_writeback_work
;
438 /* hash tables for osc_quota_info */
439 struct cfs_hash
*cl_quota_hash
[MAXQUOTAS
];
441 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
448 struct echo_client_obd
{
449 struct obd_export
*ec_exp
; /* the local connection to osc/lov */
451 struct list_head ec_objects
;
452 struct list_head ec_locks
;
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 */
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 */
476 /* Generic subset of OSTs */
478 __u32
*op_array
; /* array of index of
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 */
485 /* Round-robin allocator data */
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 */
494 /* allow statfs data caching for 1 second */
495 #define OBD_STATFS_CACHE_SECONDS 1
497 struct lov_statfs_data
{
498 struct obd_info lsd_oi
;
499 struct obd_statfs lsd_statfs
;
501 /* Stripe placement optimization */
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
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 */
521 struct 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 */
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 */
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
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 */
547 struct proc_dir_entry
*pool_proc_entry
; /* file in /proc */
548 struct obd_device
*pool_lobd
; /* obd of the lov/lod to which
549 * this pool belongs */
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
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 */
566 struct cfs_hash
*lov_pools_hash_body
; /* used for key access */
567 struct list_head lov_pool_list
; /* used for sequential access */
568 struct proc_dir_entry
*lov_pool_proc_entry
;
569 enum lustre_sec_part lov_sp_me
;
571 /* Cached LRU pages from upper layer */
574 struct rw_semaphore lov_notify_lock
;
577 struct lmv_tgt_desc
{
578 struct obd_uuid ltd_uuid
;
579 struct obd_export
*ltd_exp
;
581 struct mutex ltd_fid_mutex
;
582 unsigned long ltd_active
:1; /* target up for requests */
585 enum placement_policy
{
586 PLACEMENT_CHAR_POLICY
= 0,
587 PLACEMENT_NID_POLICY
= 1,
588 PLACEMENT_INVAL_POLICY
= 2,
592 typedef enum placement_policy placement_policy_t
;
596 struct lu_client_fld lmv_fld
;
598 placement_policy_t lmv_placement
;
599 struct lmv_desc desc
;
600 struct obd_uuid cluuid
;
601 struct obd_export
*exp
;
603 struct mutex init_mutex
;
608 int max_def_cookiesize
;
611 int tgts_size
; /* size of tgts array */
612 struct lmv_tgt_desc
**tgts
;
614 struct obd_connect_data conn_data
;
617 struct niobuf_local
{
618 __u64 lnb_file_offset
;
619 __u32 lnb_page_offset
;
623 struct dentry
*dentry
;
628 #define LUSTRE_FLD_NAME "fld"
629 #define LUSTRE_SEQ_NAME "seq"
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"
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"
653 #define LUSTRE_ECHO_NAME "obdecho"
654 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
655 #define LUSTRE_QMT_NAME "qmt"
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"
663 static inline int is_osp_on_mdt(char *name
)
667 ptr
= strrchr(name
, '-');
669 CERROR("%s is not a obdname\n", name
);
673 /* 1.8 OSC/OSP name on MDT is fsname-OSTxxxx-osc */
674 if (strncmp(ptr
+ 1, "osc", 3) == 0)
677 if (strncmp(ptr
+ 1, "MDT", 3) != 0)
680 while (*(--ptr
) != '-' && ptr
!= name
);
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)
692 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
693 #define N_LOCAL_TEMP_PAGE 0x10000000
695 struct obd_trans_info
{
698 /* Only used on the server side for tracking acks. */
699 struct oti_req_ack_lock
{
700 struct lustre_handle lock
;
704 struct llog_cookie oti_onecookie
;
705 struct llog_cookie
*oti_logcookies
;
707 /** synchronous write is needed */
708 unsigned long oti_sync_write
:1;
710 /* initial thread handling transaction */
711 struct ptlrpc_thread
* oti_thread
;
714 __u64 oti_pre_version
;
718 struct obd_uuid
*oti_ost_uuid
;
721 static inline void oti_init(struct obd_trans_info
*oti
,
722 struct ptlrpc_request
*req
)
726 memset(oti
, 0, sizeof(*oti
));
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
);
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
);
748 static inline void oti_alloc_cookies(struct obd_trans_info
*oti
,int num_cookies
)
753 if (num_cookies
== 1)
754 oti
->oti_logcookies
= &oti
->oti_onecookie
;
756 OBD_ALLOC_LARGE(oti
->oti_logcookies
,
757 num_cookies
* sizeof(oti
->oti_onecookie
));
759 oti
->oti_numcookies
= num_cookies
;
762 static inline void oti_free_cookies(struct obd_trans_info
*oti
)
764 if (!oti
|| !oti
->oti_logcookies
)
767 if (oti
->oti_logcookies
== &oti
->oti_onecookie
)
768 LASSERT(oti
->oti_numcookies
== 1);
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;
777 * Events signalled through obd_notify() upcall-chain.
779 enum obd_notify_event
{
782 /* Device connect start */
784 /* Device activated */
786 /* Device deactivated */
788 /* Device disconnected */
790 /* Connect data for import were changed */
793 OBD_NOTIFY_SYNC_NONBLOCK
,
795 /* Configuration event */
797 /* Administratively deactivate/activate event */
798 OBD_NOTIFY_DEACTIVATE
,
803 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
804 * and liblustre being main examples).
806 struct 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 */
813 struct 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
;
820 struct obd_llog_group
{
822 struct llog_ctxt
*olg_ctxts
[LLOG_MAX_CTXTS
];
823 wait_queue_head_t olg_waitq
;
825 struct mutex olg_cat_processing
;
828 /* corresponds to one of the obd's */
829 #define OBD_DEVICE_MAGIC 0XAB5CD6EF
830 #define OBD_DEV_BY_DEVNAME 0xffffd0de
833 struct obd_type
*obd_type
;
836 /* common and UUID name of this device */
837 char obd_name
[MAX_OBD_NAME
];
838 struct obd_uuid obd_uuid
;
840 struct lu_device
*obd_lu_dev
;
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 */
866 struct cfs_hash
*obd_uuid_hash
;
867 /* nid-export hash body */
868 struct cfs_hash
*obd_nid_hash
;
870 struct cfs_hash
*obd_nid_stats_hash
;
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
;
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 */
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 */
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 */
911 struct timer_list obd_recovery_timer
;
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
;
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
;
930 struct client_obd cli
;
931 struct echo_client_obd echo_client
;
935 /* Fields used by LProcFS */
936 unsigned int obd_cntr_base
;
937 struct lprocfs_stats
*obd_stats
;
939 unsigned int md_cntr_base
;
940 struct lprocfs_stats
*md_stats
;
942 struct proc_dir_entry
*obd_proc_entry
;
943 void *obd_proc_private
; /* type private PDEs */
944 struct proc_dir_entry
*obd_proc_exports_entry
;
945 struct proc_dir_entry
*obd_svc_procroot
;
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 */
952 * Ldlm pool part. Save last calculated SLV and Limit.
954 rwlock_t obd_pool_lock
;
959 * A list of outstanding class_incref()'s against this obd. For
962 struct lu_ref obd_reference
;
964 int obd_conn_inprogress
;
967 #define OBD_LLOG_FL_SENDNOW 0x0001
968 #define OBD_LLOG_FL_EXIT 0x0002
970 enum obd_cleanup_stage
{
971 /* Special case hack for MDS LOVs */
973 /* can be directly mapped to .ldto_device_fini() */
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"
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"
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"
1016 #define KEY_CACHE_SET "cache_set"
1017 #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
1018 #define KEY_CHANGELOG_INDEX "changelog_index"
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)
1036 #define IT_SETXATTR (1 << 13)
1038 static inline int it_to_lock_mode(struct lookup_intent
*it
)
1040 /* CREAT needs to be tested before open (both could be set) */
1041 if (it
->it_op
& IT_CREAT
)
1043 else if (it
->it_op
& (IT_READDIR
| IT_GETATTR
| IT_OPEN
| IT_LOOKUP
|
1046 else if (it
->it_op
& IT_GETXATTR
)
1048 else if (it
->it_op
& IT_SETXATTR
)
1051 LASSERTF(0, "Invalid it_op: %d\n", it
->it_op
);
1056 struct lu_fid op_fid1
; /* operation fid1 (usually parent) */
1057 struct lu_fid op_fid2
; /* operation fid2 (usually child) */
1058 struct lu_fid op_fid3
; /* 2 extra fids to find conflicting */
1059 struct lu_fid op_fid4
; /* to the operation locks. */
1060 u32 op_mds
; /* what mds server open will go to */
1061 struct lustre_handle op_handle
;
1062 obd_time op_mod_time
;
1063 const char *op_name
;
1066 struct lmv_stripe_md
*op_mea1
;
1067 struct lmv_stripe_md
*op_mea2
;
1068 __u32 op_suppgids
[2];
1074 /* iattr fields and blocks. */
1075 struct iattr op_attr
;
1076 unsigned int op_attr_flags
;
1078 loff_t op_attr_blocks
;
1080 /* Size-on-MDS epoch and flags. */
1085 struct obd_capa
*op_capa1
;
1086 struct obd_capa
*op_capa2
;
1088 /* Various operation flags. */
1089 enum mds_op_bias op_bias
;
1091 /* Operation type */
1094 /* Used by readdir */
1097 /* Used by readdir */
1100 /* used to transfer info between the stacks of MD client
1101 * see enum op_cli_flags */
1104 /* File object data version for HSM release, on client */
1105 __u64 op_data_version
;
1106 struct lustre_handle op_lease_handle
;
1110 CLI_SET_MEA
= 1 << 0,
1111 CLI_RM_ENTRY
= 1 << 1,
1114 struct md_enqueue_info
;
1115 /* metadata stat-ahead */
1116 typedef int (* md_enqueue_cb_t
)(struct ptlrpc_request
*req
,
1117 struct md_enqueue_info
*minfo
,
1120 struct 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
;
1127 unsigned int mi_generation
;
1131 struct module
*o_owner
;
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
,
1149 int (*o_postrecov
)(struct obd_device
*dev
);
1150 int (*o_add_conn
)(struct obd_import
*imp
, struct obd_uuid
*uuid
,
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
,
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
,
1166 int (*o_disconnect
)(struct obd_export
*exp
);
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
);
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
);
1178 * Object with @fid is getting deleted, we may want to do something
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
,
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
,
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
*);
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
*);
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);
1272 int (*o_import_event
)(struct obd_device
*, struct obd_import
*,
1273 enum obd_import_event
);
1275 int (*o_notify
)(struct obd_device
*obd
, struct obd_device
*watched
,
1276 enum obd_notify_event ev
, void *data
);
1278 int (*o_health_check
)(const struct lu_env
*env
, struct obd_device
*);
1279 struct obd_uuid
*(*o_get_uuid
) (struct obd_export
*exp
);
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
*);
1287 int (*o_ping
)(const struct lu_env
*, struct obd_export
*exp
);
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
,
1294 int (*o_pool_rem
)(struct obd_device
*obd
, char *poolname
,
1296 void (*o_getref
)(struct obd_device
*obd
);
1297 void (*o_putref
)(struct obd_device
*obd
);
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. */
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)
1312 /* lmv structures */
1313 #define MEA_MAGIC_LAST_CHAR 0xb2221ca1
1314 #define MEA_MAGIC_ALL_CHARS 0xb222a11c
1315 #define MEA_MAGIC_HASH_SEGMENT 0xb222a11b
1317 #define MAX_HASH_SIZE_32 0x7fffffffUL
1318 #define MAX_HASH_SIZE 0x7fffffffffffffffULL
1319 #define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL
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
;
1328 struct mdt_remote_perm
*remote_perm
;
1329 struct obd_capa
*mds_capa
;
1330 struct obd_capa
*oss_capa
;
1333 struct md_open_data
{
1334 struct obd_client_handle
*mod_och
;
1335 struct ptlrpc_request
*mod_open_req
;
1336 struct ptlrpc_request
*mod_close_req
;
1337 atomic_t mod_refcount
;
1341 struct lookup_intent
;
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
**);
1384 int (*m_unlink
)(struct obd_export
*, struct md_op_data
*,
1385 struct ptlrpc_request
**);
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
**);
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
**);
1397 int (*m_init_ea_size
)(struct obd_export
*, int, int, int, int);
1399 int (*m_get_lustre_md
)(struct obd_export
*, struct ptlrpc_request
*,
1400 struct obd_export
*, struct obd_export
*,
1401 struct lustre_md
*);
1403 int (*m_free_lustre_md
)(struct obd_export
*, struct lustre_md
*);
1405 int (*m_set_open_replay_data
)(struct obd_export
*,
1406 struct obd_client_handle
*,
1407 struct lookup_intent
*);
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
*);
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
*);
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
**);
1425 int (*m_get_remote_perm
)(struct obd_export
*, const struct lu_fid
*,
1426 struct obd_capa
*, __u32
,
1427 struct ptlrpc_request
**);
1429 int (*m_intent_getattr_async
)(struct obd_export
*,
1430 struct md_enqueue_info
*,
1431 struct ldlm_enqueue_info
*);
1433 int (*m_revalidate_lock
)(struct obd_export
*, struct lookup_intent
*,
1434 struct lu_fid
*, __u64
*bits
);
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.
1443 struct 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
*,
1449 void (*lsm_stripe_by_offset
)(struct lov_stripe_md
*, int *, 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
);
1457 extern const struct lsm_operations lsm_v1_ops
;
1458 extern const struct lsm_operations lsm_v3_ops
;
1459 static inline const struct lsm_operations
*lsm_op_find(int magic
)
1467 CERROR("Cannot recognize lsm_magic %08x\n", magic
);
1472 /* Requests for obd_extent_calc() */
1473 #define OBD_CALC_STRIPE_START 1
1474 #define OBD_CALC_STRIPE_END 2
1476 static inline struct lustre_capa
*oinfo_capa(struct obd_info
*oinfo
)
1478 return oinfo
->oi_capa
;
1481 static inline struct md_open_data
*obd_mod_alloc(void)
1483 struct md_open_data
*mod
;
1487 atomic_set(&mod
->mod_refcount
, 1);
1491 #define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
1492 #define obd_mod_put(mod) \
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); \
1501 void obdo_from_inode(struct obdo
*dst
, struct inode
*src
, obd_flag valid
);
1502 void obdo_set_parent_fid(struct obdo
*dst
, const struct lu_fid
*parent
);
1504 /* return 1 if client should be resend request */
1505 static inline int client_should_resend(int resend
, struct client_obd
*cli
)
1507 return atomic_read(&cli
->cl_resends
) ?
1508 atomic_read(&cli
->cl_resends
) > resend
: 1;
1512 * Return device name for this device
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
1518 static inline const char *lu_dev_name(const struct lu_device
*lu_dev
)
1520 return lu_dev
->ld_obd
->obd_name
;
1523 static inline bool filename_is_volatile(const char *name
, int namelen
, int *idx
)
1528 if (strncmp(name
, LUSTRE_VOLATILE_HDR
, LUSTRE_VOLATILE_HDR_LEN
) != 0)
1531 /* caller does not care of idx */
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)
1540 /* test for no MDT idx case */
1541 if ((*(name
+ LUSTRE_VOLATILE_HDR_LEN
) == ':') &&
1542 (*(name
+ LUSTRE_VOLATILE_HDR_LEN
+ 1) == ':')) {
1546 /* we have an idx, read it */
1547 start
= name
+ LUSTRE_VOLATILE_HDR_LEN
+ 1;
1548 *idx
= strtoul(start
, &end
, 0);
1550 * no digit, no trailing :, negative value
1552 if (((*idx
== 0) && (end
== start
)) ||
1553 (*end
!= ':') || (*idx
< 0))
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
);
1565 static inline int cli_brw_size(struct obd_device
*obd
)
1567 LASSERT(obd
!= NULL
);
1568 return obd
->u
.cli
.cl_max_pages_per_rpc
<< PAGE_CACHE_SHIFT
;
1571 #endif /* __OBD_H */