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, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 #if defined(__linux__)
41 #include <linux/obd.h>
42 #elif defined(__APPLE__)
43 #include <darwin/obd.h>
44 #elif defined(__WINNT__)
45 #include <winnt/obd.h>
47 #error Unsupported operating system.
50 #define IOC_OSC_TYPE 'h'
51 #define IOC_OSC_MIN_NR 20
52 #define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
53 #define IOC_OSC_MAX_NR 50
55 #define IOC_MDC_TYPE 'i'
56 #define IOC_MDC_MIN_NR 20
57 #define IOC_MDC_MAX_NR 50
59 #include <lustre/lustre_idl.h>
60 #include <lustre_lib.h>
61 #include <libcfs/bitmap.h>
62 #ifdef HAVE_SERVER_SUPPORT
63 # include <lu_target.h>
64 # include <obd_target.h>
67 #include <lustre_export.h>
68 #include <lustre_fid.h>
69 #include <lustre_fld.h>
70 #include <lustre_capa.h>
73 #define MAX_OBD_DEVICES 8192
81 struct lov_oinfo { /* per-stripe data structure */
82 struct ost_id loi_oi; /* object ID/Sequence on the target OST */
83 int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */
84 int loi_ost_gen; /* generation of this loi_ost_idx */
86 unsigned long loi_kms_valid:1;
87 __u64 loi_kms; /* known minimum size */
88 struct ost_lvb loi_lvb;
89 struct osc_async_rc loi_ar;
92 static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms)
95 oinfo->loi_kms_valid = 1;
98 static inline void loi_init(struct lov_oinfo *loi)
102 struct lov_stripe_md {
105 pid_t lsm_lock_owner; /* debugging */
107 /* maximum possible file size, might change as OSTs status changes,
108 * e.g. disconnected, deactivated */
111 /* Public members. */
112 struct ost_id lw_object_oi; /* lov object id/seq */
114 /* LOV-private members start here -- only for use in lov/. */
116 __u32 lw_stripe_size; /* size of the stripe */
117 __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */
118 __u16 lw_stripe_count; /* number of objects being striped over */
119 __u16 lw_layout_gen; /* generation of the layout */
120 char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */
123 struct lov_oinfo *lsm_oinfo[0];
126 #define lsm_oi lsm_wire.lw_object_oi
127 #define lsm_magic lsm_wire.lw_magic
128 #define lsm_layout_gen lsm_wire.lw_layout_gen
129 #define lsm_stripe_size lsm_wire.lw_stripe_size
130 #define lsm_pattern lsm_wire.lw_pattern
131 #define lsm_stripe_count lsm_wire.lw_stripe_count
132 #define lsm_pool_name lsm_wire.lw_pool_name
134 static inline bool lsm_is_released(struct lov_stripe_md *lsm)
136 return !!(lsm->lsm_pattern & LOV_PATTERN_F_RELEASED);
139 static inline bool lsm_has_objects(struct lov_stripe_md *lsm)
143 if (lsm_is_released(lsm))
148 static inline int lov_stripe_md_size(unsigned int stripe_count)
150 struct lov_stripe_md lsm;
152 return sizeof(lsm) + stripe_count * sizeof(lsm.lsm_oinfo[0]);
157 typedef int (*obd_enqueue_update_f)(void *cookie, int rc);
159 /* obd info for a particular level (lov, osc). */
161 /* Lock policy. It keeps an extent which is specific for a particular
162 * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy,
163 * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */
164 ldlm_policy_data_t oi_policy;
165 /* Flags used for set request specific flags:
166 - while lock handling, the flags obtained on the enqueue
167 request are set here.
168 - while stats, the flags used for control delay/resend.
169 - while setattr, the flags used for distinguish punch operation
172 /* Lock handle specific for every OSC lock. */
173 struct lustre_handle *oi_lockh;
174 /* lsm data specific for every OSC. */
175 struct lov_stripe_md *oi_md;
176 /* obdo data specific for every OSC, if needed at all. */
178 /* statfs data specific for every OSC, if needed at all. */
179 struct obd_statfs *oi_osfs;
180 /* An update callback which is called to update some data on upper
181 * level. E.g. it is used for update lsm->lsm_oinfo at every recieved
182 * request in osc level for enqueue requests. It is also possible to
183 * update some caller data from LOV layer if needed. */
184 obd_enqueue_update_f oi_cb_up;
185 /* oss capability, its type is obd_capa in client to avoid copy.
186 * in contrary its type is lustre_capa in OSS. */
188 /* transfer jobid from ost_sync() to filter_sync()... */
193 struct list_head typ_chain;
194 struct obd_ops *typ_dt_ops;
195 struct md_ops *typ_md_ops;
196 struct proc_dir_entry *typ_procroot;
197 struct proc_dir_entry *typ_procsym;
198 __u32 typ_sym_filter;
201 struct lu_device_type *typ_lu;
202 spinlock_t obd_type_lock;
214 LLOG_CONFIG_ORIG_CTXT = 0,
215 LLOG_CONFIG_REPL_CTXT,
216 LLOG_MDS_OST_ORIG_CTXT,
217 LLOG_MDS_OST_REPL_CTXT,
224 LLOG_LOVEA_ORIG_CTXT,
225 LLOG_LOVEA_REPL_CTXT,
226 LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */
227 LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */
228 LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */
229 LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */
233 struct timeout_item {
234 enum timeout_event ti_event;
235 cfs_time_t ti_timeout;
238 cfs_list_t ti_obd_list;
242 #define OSC_MAX_RIF_DEFAULT 8
243 #define MDS_OSC_MAX_RIF_DEFAULT 50
244 #define OSC_MAX_RIF_MAX 256
245 #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
246 #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
247 #define OSC_DEFAULT_RESENDS 10
249 /* possible values for fo_sync_lock_cancel */
251 NEVER_SYNC_ON_CANCEL = 0,
252 BLOCKING_SYNC_ON_CANCEL = 1,
253 ALWAYS_SYNC_ON_CANCEL = 2,
254 NUM_SYNC_ON_CANCEL_STATES
257 #define MDC_MAX_RIF_DEFAULT 8
258 #define MDC_MAX_RIF_MAX 512
263 struct rw_semaphore cl_sem;
264 struct obd_uuid cl_target_uuid;
265 struct obd_import *cl_import; /* ptlrpc connection state */
267 /* max_mds_easize is purely a performance thing so we don't have to
268 * call obd_size_diskmd() all the time. */
269 int cl_default_mds_easize;
270 int cl_max_mds_easize;
271 int cl_default_mds_cookiesize;
272 int cl_max_mds_cookiesize;
274 enum lustre_sec_part cl_sp_me;
275 enum lustre_sec_part cl_sp_to;
276 struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
278 /* the grant values are protected by loi_list_lock below */
279 long cl_dirty; /* all _dirty_ in bytes */
280 long cl_dirty_max; /* allowed w/o rpc */
281 long cl_dirty_transit; /* dirty synchronous */
282 long cl_avail_grant; /* bytes of credit for ost */
283 long cl_lost_grant; /* lost credits (trunc) */
285 /* since we allocate grant by blocks, we don't know how many grant will
286 * be used to add a page into cache. As a solution, we reserve maximum
287 * grant before trying to dirty a page and unreserve the rest.
288 * See osc_{reserve|unreserve}_grant for details. */
289 long cl_reserved_grant;
290 cfs_list_t cl_cache_waiters; /* waiting for cache/grant */
291 cfs_time_t cl_next_shrink_grant; /* jiffies */
292 cfs_list_t cl_grant_shrink_list; /* Timeout event list */
293 int cl_grant_shrink_interval; /* seconds */
295 /* A chunk is an optimal size used by osc_extent to determine
296 * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */
299 int cl_extent_tax; /* extent overhead, by bytes */
301 /* keep track of objects that have lois that contain pages which
302 * have been queued for async brw. this lock also protects the
303 * lists of osc_client_pages that hang off of the loi */
305 * ->cl_loi_list_lock protects consistency of
306 * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
307 * ->ap_completion() call-backs are executed under this lock. As we
308 * cannot guarantee that these call-backs never block on all platforms
309 * (as a matter of fact they do block on Mac OS X), type of
310 * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
311 * and blocking mutex on Mac OS X. (Alternative is to make this lock
312 * blocking everywhere, but we don't want to slow down fast-path of
313 * our main platform.)
315 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
316 * with client_obd_list_{un,}lock() and
317 * client_obd_list_lock_{init,done}() functions.
319 * NB by Jinshan: though field names are still _loi_, but actually
320 * osc_object{}s are in the list.
322 client_obd_lock_t cl_loi_list_lock;
323 cfs_list_t cl_loi_ready_list;
324 cfs_list_t cl_loi_hp_ready_list;
325 cfs_list_t cl_loi_write_list;
326 cfs_list_t cl_loi_read_list;
329 /* just a sum of the loi/lop pending numbers to be exported by /proc */
330 atomic_t cl_pending_w_pages;
331 atomic_t cl_pending_r_pages;
332 __u32 cl_max_pages_per_rpc;
333 int cl_max_rpcs_in_flight;
334 struct obd_histogram cl_read_rpc_hist;
335 struct obd_histogram cl_write_rpc_hist;
336 struct obd_histogram cl_read_page_hist;
337 struct obd_histogram cl_write_page_hist;
338 struct obd_histogram cl_read_offset_hist;
339 struct obd_histogram cl_write_offset_hist;
341 /* lru for osc caching pages */
342 struct cl_client_cache *cl_cache;
343 cfs_list_t cl_lru_osc; /* member of cl_cache->ccc_lru */
344 atomic_t *cl_lru_left;
345 atomic_t cl_lru_busy;
346 atomic_t cl_lru_shrinkers;
347 atomic_t cl_lru_in_list;
348 cfs_list_t cl_lru_list; /* lru page list */
349 client_obd_lock_t cl_lru_list_lock; /* page list protector */
350 atomic_t cl_unstable_count;
352 /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
353 atomic_t cl_destroy_in_flight;
354 wait_queue_head_t cl_destroy_waitq;
356 struct mdc_rpc_lock *cl_rpc_lock;
357 struct mdc_rpc_lock *cl_close_lock;
360 struct mutex cl_mgc_mutex;
361 struct local_oid_storage *cl_mgc_los;
362 struct dt_object *cl_mgc_configs_dir;
363 atomic_t cl_mgc_refcount;
364 struct obd_export *cl_mgc_mgsexp;
366 /* checksumming for data sent over the network */
367 unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */
368 /* supported checksum types that are worked out at connect time */
369 __u32 cl_supp_cksum_types;
370 /* checksum algorithm to be used */
371 cksum_type_t cl_cksum_type;
373 /* also protected by the poorly named _loi_list_lock lock above */
374 struct osc_async_rc cl_ar;
376 /* used by quotacheck when the servers are older than 2.4 */
377 int cl_qchk_stat; /* quotacheck stat of the peer */
378 #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
379 #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
380 #warning "please consider removing quotacheck compatibility code"
383 /* sequence manager */
384 struct lu_client_seq *cl_seq;
386 atomic_t cl_resends; /* resend count */
388 /* ptlrpc work for writeback in ptlrpcd context */
389 void *cl_writeback_work;
391 /* hash tables for osc_quota_info */
392 cfs_hash_t *cl_quota_hash[MAXQUOTAS];
394 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
401 struct echo_client_obd {
402 struct obd_export *ec_exp; /* the local connection to osc/lov */
404 cfs_list_t ec_objects;
410 /* Generic subset of OSTs */
412 __u32 *op_array; /* array of index of
414 unsigned int op_count; /* number of OSTs in the array */
415 unsigned int op_size; /* allocated size of lp_array */
416 struct rw_semaphore op_rw_sem; /* to protect ost_pool use */
419 /* allow statfs data caching for 1 second */
420 #define OBD_STATFS_CACHE_SECONDS 1
422 struct lov_tgt_desc {
424 struct obd_uuid ltd_uuid;
425 struct obd_device *ltd_obd;
426 struct obd_export *ltd_exp;
428 __u32 ltd_index; /* index in lov_obd->tgts */
429 unsigned long ltd_active:1,/* is this target up for requests */
430 ltd_activate:1,/* should target be activated */
431 ltd_reap:1; /* should this target be deleted */
435 struct lov_desc desc;
436 struct lov_tgt_desc **lov_tgts; /* sparse array */
437 struct ost_pool lov_packed; /* all OSTs in a packed
439 struct mutex lov_lock;
440 struct obd_connect_data lov_ocd;
441 atomic_t lov_refcount;
442 __u32 lov_death_row; /* tgts scheduled to be deleted */
443 __u32 lov_tgt_size; /* size of tgts array */
446 cfs_hash_t *lov_pools_hash_body; /* used for key access */
447 cfs_list_t lov_pool_list; /* used for sequential access */
448 cfs_proc_dir_entry_t *lov_pool_proc_entry;
449 enum lustre_sec_part lov_sp_me;
451 /* Cached LRU and unstable data from upper layer */
454 struct rw_semaphore lov_notify_lock;
457 struct lmv_tgt_desc {
458 struct obd_uuid ltd_uuid;
459 struct obd_export *ltd_exp;
461 struct mutex ltd_fid_mutex;
462 unsigned long ltd_active:1; /* target up for requests */
465 enum placement_policy {
466 PLACEMENT_CHAR_POLICY = 0,
467 PLACEMENT_NID_POLICY = 1,
468 PLACEMENT_INVAL_POLICY = 2,
472 typedef enum placement_policy placement_policy_t;
476 struct lu_client_fld lmv_fld;
478 placement_policy_t lmv_placement;
479 struct lmv_desc desc;
480 struct obd_uuid cluuid;
481 struct obd_export *exp;
483 struct mutex init_mutex;
488 int max_def_cookiesize;
491 int tgts_size; /* size of tgts array */
492 struct lmv_tgt_desc **tgts;
494 struct obd_connect_data conn_data;
497 struct niobuf_local {
498 __u64 lnb_file_offset;
499 __u32 lnb_page_offset;
503 struct dentry *dentry;
508 #define LUSTRE_FLD_NAME "fld"
509 #define LUSTRE_SEQ_NAME "seq"
511 #define LUSTRE_MDD_NAME "mdd"
512 #define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs"
513 #define LUSTRE_OSD_ZFS_NAME "osd-zfs"
514 #define LUSTRE_VVP_NAME "vvp"
515 #define LUSTRE_LMV_NAME "lmv"
516 #define LUSTRE_SLP_NAME "slp"
517 #define LUSTRE_LOD_NAME "lod"
518 #define LUSTRE_OSP_NAME "osp"
519 #define LUSTRE_LWP_NAME "lwp"
521 /* obd device type names */
522 /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
523 #define LUSTRE_MDS_NAME "mds"
524 #define LUSTRE_MDT_NAME "mdt"
525 #define LUSTRE_MDC_NAME "mdc"
526 #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
527 #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
528 #define LUSTRE_OSC_NAME "osc"
529 #define LUSTRE_LOV_NAME "lov"
530 #define LUSTRE_MGS_NAME "mgs"
531 #define LUSTRE_MGC_NAME "mgc"
533 #define LUSTRE_ECHO_NAME "obdecho"
534 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
535 #define LUSTRE_QMT_NAME "qmt"
537 /* Constant obd names (post-rename) */
538 #define LUSTRE_MDS_OBDNAME "MDS"
539 #define LUSTRE_OSS_OBDNAME "OSS"
540 #define LUSTRE_MGS_OBDNAME "MGS"
541 #define LUSTRE_MGC_OBDNAME "MGC"
543 static inline int is_osp_on_mdt(char *name)
547 ptr = strrchr(name, '-');
549 CERROR("%s is not a obdname\n", name);
553 /* 1.8 OSC/OSP name on MDT is fsname-OSTxxxx-osc */
554 if (strncmp(ptr + 1, "osc", 3) == 0)
557 if (strncmp(ptr + 1, "MDT", 3) != 0)
560 while (*(--ptr) != '-' && ptr != name);
565 if (strncmp(ptr + 1, LUSTRE_OSP_NAME, strlen(LUSTRE_OSP_NAME)) != 0 &&
566 strncmp(ptr + 1, LUSTRE_OSC_NAME, strlen(LUSTRE_OSC_NAME)) != 0)
572 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
573 #define N_LOCAL_TEMP_PAGE 0x10000000
575 struct obd_trans_info {
578 /* Only used on the server side for tracking acks. */
579 struct oti_req_ack_lock {
580 struct lustre_handle lock;
584 struct llog_cookie oti_onecookie;
585 struct llog_cookie *oti_logcookies;
587 /** synchronous write is needed */
588 unsigned long oti_sync_write:1;
590 /* initial thread handling transaction */
591 struct ptlrpc_thread * oti_thread;
594 __u64 oti_pre_version;
598 struct obd_uuid *oti_ost_uuid;
601 static inline void oti_init(struct obd_trans_info *oti,
602 struct ptlrpc_request *req)
606 memset(oti, 0, sizeof(*oti));
611 oti->oti_xid = req->rq_xid;
612 /** VBR: take versions from request */
613 if (req->rq_reqmsg != NULL &&
614 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
615 __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
616 oti->oti_pre_version = pre_version ? pre_version[0] : 0;
617 oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg);
620 /** called from mds_create_objects */
621 if (req->rq_repmsg != NULL)
622 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
623 oti->oti_thread = req->rq_svc_thread;
624 if (req->rq_reqmsg != NULL)
625 oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
628 static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
633 if (num_cookies == 1)
634 oti->oti_logcookies = &oti->oti_onecookie;
636 OBD_ALLOC_LARGE(oti->oti_logcookies,
637 num_cookies * sizeof(oti->oti_onecookie));
639 oti->oti_numcookies = num_cookies;
642 static inline void oti_free_cookies(struct obd_trans_info *oti)
644 if (!oti || !oti->oti_logcookies)
647 if (oti->oti_logcookies == &oti->oti_onecookie)
648 LASSERT(oti->oti_numcookies == 1);
650 OBD_FREE_LARGE(oti->oti_logcookies,
651 oti->oti_numcookies*sizeof(oti->oti_onecookie));
652 oti->oti_logcookies = NULL;
653 oti->oti_numcookies = 0;
657 * Events signalled through obd_notify() upcall-chain.
659 enum obd_notify_event {
662 /* Device connect start */
664 /* Device activated */
666 /* Device deactivated */
668 /* Device disconnected */
670 /* Connect data for import were changed */
673 OBD_NOTIFY_SYNC_NONBLOCK,
675 /* Configuration event */
677 /* Administratively deactivate/activate event */
678 OBD_NOTIFY_DEACTIVATE,
682 /* bit-mask flags for config events */
684 CONFIG_LOG = 0x1, /* finished processing config log */
685 CONFIG_SYNC = 0x2, /* mdt synced 1 ost */
686 CONFIG_TARGET = 0x4 /* one target is added */
690 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
691 * and liblustre being main examples).
693 struct obd_notify_upcall {
694 int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
695 enum obd_notify_event ev, void *owner, void *data);
696 /* Opaque datum supplied by upper layer listener */
700 struct target_recovery_data {
701 svc_handler_t trd_recovery_handler;
702 pid_t trd_processing_task;
703 struct completion trd_starting;
704 struct completion trd_finishing;
707 struct obd_llog_group {
709 struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS];
710 wait_queue_head_t olg_waitq;
712 struct mutex olg_cat_processing;
715 /* corresponds to one of the obd's */
716 #define OBD_DEVICE_MAGIC 0XAB5CD6EF
717 #define OBD_DEV_BY_DEVNAME 0xffffd0de
720 struct obd_type *obd_type;
723 /* common and UUID name of this device */
724 char obd_name[MAX_OBD_NAME];
725 struct obd_uuid obd_uuid;
727 struct lu_device *obd_lu_dev;
729 /* bitfield modification is protected by obd_dev_lock */
731 obd_attached:1, /* finished attach */
732 obd_set_up:1, /* finished setup */
733 obd_recovering:1, /* there are recoverable clients */
734 obd_abort_recovery:1, /* recovery expired */
735 obd_version_recov:1, /* obd uses version checking */
736 obd_replayable:1, /* recovery is enabled;
738 obd_no_transno:1, /* no committed-transno notification */
739 obd_no_recov:1, /* fail instead of retry messages */
740 obd_stopping:1, /* started cleanup */
741 obd_starting:1, /* started setup */
742 obd_force:1, /* cleanup with > 0 obd refcount */
743 obd_fail:1, /* cleanup with failover */
744 obd_async_recov:1, /* allow asynchronous orphan cleanup */
745 obd_no_conn:1, /* deny new connections */
746 obd_inactive:1, /* device active/inactive
747 * (for /proc/status only!!) */
748 obd_no_ir:1, /* no imperative recovery. */
749 obd_process_conf:1, /* device is processing mgs config */
750 obd_uses_nid_stats:1; /* maintain per-client OBD stats */
752 /* use separate field as it is set in interrupt to don't mess with
753 * protection of other bits using _bh lock */
754 unsigned long obd_recovery_expired:1;
755 /* uuid-export hash body */
756 cfs_hash_t *obd_uuid_hash;
757 /* nid-export hash body */
758 cfs_hash_t *obd_nid_hash;
760 cfs_hash_t *obd_nid_stats_hash;
761 cfs_list_t obd_nid_stats;
762 atomic_t obd_refcount;
763 cfs_list_t obd_exports;
764 cfs_list_t obd_unlinked_exports;
765 cfs_list_t obd_delayed_exports;
766 struct list_head obd_lwp_list;
768 spinlock_t obd_nid_lock;
769 struct ldlm_namespace *obd_namespace;
770 struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
771 /* a spinlock is OK for what we do now, may need a semaphore later */
772 spinlock_t obd_dev_lock; /* protect OBD bitfield above */
773 struct mutex obd_dev_mutex;
774 __u64 obd_last_committed;
775 spinlock_t obd_osfs_lock;
776 struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */
778 struct lvfs_run_ctxt obd_lvfs_ctxt;
779 struct obd_llog_group obd_olg; /* default llog group */
780 struct obd_device *obd_observer;
781 struct rw_semaphore obd_observer_link_sem;
782 struct obd_notify_upcall obd_upcall;
783 struct obd_export *obd_self_export;
784 struct obd_export *obd_lwp_export;
785 /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
786 cfs_list_t obd_exports_timed;
787 time_t obd_eviction_timer; /* for ping evictor */
789 int obd_max_recoverable_clients;
790 atomic_t obd_connected_clients;
791 int obd_stale_clients;
792 int obd_delayed_clients;
793 /* this lock protects all recovery list_heads, timer and
794 * obd_next_recovery_transno value */
795 spinlock_t obd_recovery_task_lock;
796 __u64 obd_next_recovery_transno;
797 int obd_replayed_requests;
798 int obd_requests_queued_for_recovery;
799 wait_queue_head_t obd_next_transno_waitq;
800 /* protected by obd_recovery_task_lock */
801 struct timer_list obd_recovery_timer;
802 time_t obd_recovery_start; /* seconds */
803 time_t obd_recovery_end; /* seconds, for lprocfs_status */
804 int obd_recovery_time_hard;
805 int obd_recovery_timeout;
806 int obd_recovery_ir_factor;
808 /* new recovery stuff from CMD2 */
809 struct target_recovery_data obd_recovery_data;
810 int obd_replayed_locks;
811 atomic_t obd_req_replay_clients;
812 atomic_t obd_lock_replay_clients;
813 /* all lists are protected by obd_recovery_task_lock */
814 cfs_list_t obd_req_replay_queue;
815 cfs_list_t obd_lock_replay_queue;
816 cfs_list_t obd_final_req_queue;
819 #ifdef HAVE_SERVER_SUPPORT
820 struct obd_device_target obt;
821 struct filter_obd filter;
823 struct echo_obd echo;
825 struct client_obd cli;
826 struct echo_client_obd echo_client;
830 /* Fields used by LProcFS */
831 unsigned int obd_cntr_base;
832 struct lprocfs_stats *obd_stats;
834 unsigned int obd_md_cntr_base;
835 struct lprocfs_stats *obd_md_stats;
837 struct proc_dir_entry *obd_proc_entry;
838 struct proc_dir_entry *obd_proc_exports_entry;
839 struct proc_dir_entry *obd_svc_procroot;
840 struct lprocfs_stats *obd_svc_stats;
841 struct lprocfs_seq_vars *obd_vars;
842 atomic_t obd_evict_inprogress;
843 wait_queue_head_t obd_evict_inprogress_waitq;
844 cfs_list_t obd_evict_list; /* protected with pet_lock */
847 * Ldlm pool part. Save last calculated SLV and Limit.
849 rwlock_t obd_pool_lock;
854 * A list of outstanding class_incref()'s against this obd. For
857 struct lu_ref obd_reference;
859 int obd_conn_inprogress;
862 #define OBD_LLOG_FL_SENDNOW 0x0001
863 #define OBD_LLOG_FL_EXIT 0x0002
865 enum obd_cleanup_stage {
866 /* Special case hack for MDS LOVs */
868 /* can be directly mapped to .ldto_device_fini() */
872 /* get/set_info keys */
873 #define KEY_ASYNC "async"
874 #define KEY_BLOCKSIZE_BITS "blocksize_bits"
875 #define KEY_BLOCKSIZE "blocksize"
876 #define KEY_CAPA_KEY "capa_key"
877 #define KEY_CHANGELOG_CLEAR "changelog_clear"
878 #define KEY_FID2PATH "fid2path"
879 #define KEY_CHECKSUM "checksum"
880 #define KEY_CLEAR_FS "clear_fs"
881 #define KEY_CONN_DATA "conn_data"
882 #define KEY_EVICT_BY_NID "evict_by_nid"
883 #define KEY_FIEMAP "fiemap"
884 #define KEY_FLUSH_CTX "flush_ctx"
885 #define KEY_GRANT_SHRINK "grant_shrink"
886 #define KEY_HSM_COPYTOOL_SEND "hsm_send"
887 #define KEY_INIT_RECOV_BACKUP "init_recov_bk"
888 #define KEY_INIT_RECOV "initial_recov"
889 #define KEY_INTERMDS "inter_mds"
890 #define KEY_LAST_ID "last_id"
891 #define KEY_LAST_FID "last_fid"
892 #define KEY_LOCK_TO_STRIPE "lock_to_stripe"
893 #define KEY_LOVDESC "lovdesc"
894 #define KEY_LOV_IDX "lov_idx"
895 #define KEY_MAX_EASIZE "max_easize"
896 #define KEY_DEFAULT_EASIZE "default_easize"
897 #define KEY_MAX_COOKIESIZE "max_cookiesize"
898 #define KEY_DEFAULT_COOKIESIZE "default_cookiesize"
899 #define KEY_MDS_CONN "mds_conn"
900 #define KEY_MGSSEC "mgssec"
901 #define KEY_NEXT_ID "next_id"
902 #define KEY_READ_ONLY "read-only"
903 #define KEY_REGISTER_TARGET "register_target"
904 #define KEY_SET_FS "set_fs"
905 #define KEY_TGT_COUNT "tgt_count"
906 /* KEY_SET_INFO in lustre_idl.h */
907 #define KEY_SPTLRPC_CONF "sptlrpc_conf"
908 #define KEY_CONNECT_FLAG "connect_flags"
909 #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
911 #define KEY_CACHE_SET "cache_set"
912 #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
913 #define KEY_CHANGELOG_INDEX "changelog_index"
914 #define KEY_OSP_CONNECTED "osp_connected"
918 /* /!\ must be coherent with include/linux/namei.h on patched kernel */
919 #define IT_OPEN (1 << 0)
920 #define IT_CREAT (1 << 1)
921 #define IT_READDIR (1 << 2)
922 #define IT_GETATTR (1 << 3)
923 #define IT_LOOKUP (1 << 4)
924 #define IT_UNLINK (1 << 5)
925 #define IT_TRUNC (1 << 6)
926 #define IT_GETXATTR (1 << 7)
927 #define IT_EXEC (1 << 8)
928 #define IT_PIN (1 << 9)
929 #define IT_LAYOUT (1 << 10)
930 #define IT_QUOTA_DQACQ (1 << 11)
931 #define IT_QUOTA_CONN (1 << 12)
932 #define IT_SETXATTR (1 << 13)
934 static inline int it_to_lock_mode(struct lookup_intent *it)
936 /* CREAT needs to be tested before open (both could be set) */
937 if (it->it_op & IT_CREAT)
939 else if (it->it_op & (IT_GETATTR | IT_OPEN | IT_LOOKUP |
942 else if (it->it_op & IT_READDIR)
944 else if (it->it_op & IT_GETXATTR)
946 else if (it->it_op & IT_SETXATTR)
949 LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
954 struct lu_fid op_fid1; /* operation fid1 (usualy parent) */
955 struct lu_fid op_fid2; /* operation fid2 (usualy child) */
956 struct lu_fid op_fid3; /* 2 extra fids to find conflicting */
957 struct lu_fid op_fid4; /* to the operation locks. */
958 mdsno_t op_mds; /* what mds server open will go to */
959 struct lustre_handle op_handle;
960 obd_time op_mod_time;
964 struct lmv_stripe_md *op_mea1;
965 struct lmv_stripe_md *op_mea2;
966 __u32 op_suppgids[2];
972 /* iattr fields and blocks. */
973 struct iattr op_attr;
975 unsigned int op_attr_flags;
978 loff_t op_attr_blocks;
980 /* Size-on-MDS epoch and flags. */
985 struct obd_capa *op_capa1;
986 struct obd_capa *op_capa2;
988 /* Various operation flags. */
989 enum mds_op_bias op_bias;
991 /* Used by readdir */
992 __u64 op_hash_offset;
994 /* Used by readdir */
997 /* used to transfer info between the stacks of MD client
998 * see enum op_cli_flags */
1001 /* File object data version for HSM release, on client */
1002 __u64 op_data_version;
1003 struct lustre_handle op_lease_handle;
1006 #define op_stripe_offset op_ioepoch
1007 #define op_max_pages op_valid
1009 struct md_callback {
1010 int (*md_blocking_ast)(struct ldlm_lock *lock,
1011 struct ldlm_lock_desc *desc,
1012 void *data, int flag);
1015 struct md_enqueue_info;
1016 /* metadata stat-ahead */
1017 typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req,
1018 struct md_enqueue_info *minfo,
1021 struct md_enqueue_info {
1022 struct md_op_data mi_data;
1023 struct lookup_intent mi_it;
1024 struct lustre_handle mi_lockh;
1025 struct inode *mi_dir;
1026 md_enqueue_cb_t mi_cb;
1028 unsigned int mi_generation;
1032 struct module *o_owner;
1033 int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
1034 void *karg, void *uarg);
1035 int (*o_get_info)(const struct lu_env *env, struct obd_export *,
1036 __u32 keylen, void *key, __u32 *vallen, void *val,
1037 struct lov_stripe_md *lsm);
1038 int (*o_set_info_async)(const struct lu_env *, struct obd_export *,
1039 __u32 keylen, void *key,
1040 __u32 vallen, void *val,
1041 struct ptlrpc_request_set *set);
1042 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
1043 int (*o_detach)(struct obd_device *dev);
1044 int (*o_setup) (struct obd_device *dev, struct lustre_cfg *cfg);
1045 int (*o_precleanup)(struct obd_device *dev,
1046 enum obd_cleanup_stage cleanup_stage);
1047 int (*o_cleanup)(struct obd_device *dev);
1048 int (*o_process_config)(struct obd_device *dev, obd_count len,
1050 int (*o_postrecov)(struct obd_device *dev);
1051 int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid,
1053 int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid);
1054 /* connect to the target device with given connection
1055 * data. @ocd->ocd_connect_flags is modified to reflect flags actually
1056 * granted by the target, which are guaranteed to be a subset of flags
1057 * asked for. If @ocd == NULL, use default parameters. */
1058 int (*o_connect)(const struct lu_env *env,
1059 struct obd_export **exp, struct obd_device *src,
1060 struct obd_uuid *cluuid, struct obd_connect_data *ocd,
1062 int (*o_reconnect)(const struct lu_env *env,
1063 struct obd_export *exp, struct obd_device *src,
1064 struct obd_uuid *cluuid,
1065 struct obd_connect_data *ocd,
1067 int (*o_disconnect)(struct obd_export *exp);
1069 /* Initialize/finalize fids infrastructure. */
1070 int (*o_fid_init)(struct obd_device *obd,
1071 struct obd_export *exp, enum lu_cli_type type);
1072 int (*o_fid_fini)(struct obd_device *obd);
1074 /* Allocate new fid according to passed @hint. */
1075 int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
1076 struct md_op_data *op_data);
1079 * Object with @fid is getting deleted, we may want to do something
1082 int (*o_statfs)(const struct lu_env *, struct obd_export *exp,
1083 struct obd_statfs *osfs, __u64 max_age, __u32 flags);
1084 int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo,
1085 __u64 max_age, struct ptlrpc_request_set *set);
1086 int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
1087 struct lov_stripe_md *mem_src);
1088 int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
1089 struct lov_mds_md *disk_src, int disk_len);
1090 int (*o_create)(const struct lu_env *env, struct obd_export *exp,
1091 struct obdo *oa, struct lov_stripe_md **ea,
1092 struct obd_trans_info *oti);
1093 int (*o_create_async)(struct obd_export *exp, struct obd_info *oinfo,
1094 struct lov_stripe_md **ea,
1095 struct obd_trans_info *oti);
1096 int (*o_destroy)(const struct lu_env *env, struct obd_export *exp,
1097 struct obdo *oa, struct lov_stripe_md *ea,
1098 struct obd_trans_info *oti, struct obd_export *md_exp,
1100 int (*o_setattr)(const struct lu_env *, struct obd_export *exp,
1101 struct obd_info *oinfo, struct obd_trans_info *oti);
1102 int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1103 struct obd_trans_info *oti,
1104 struct ptlrpc_request_set *rqset);
1105 int (*o_getattr)(const struct lu_env *env, struct obd_export *exp,
1106 struct obd_info *oinfo);
1107 int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1108 struct ptlrpc_request_set *set);
1109 int (*o_preprw)(const struct lu_env *env, int cmd,
1110 struct obd_export *exp, struct obdo *oa, int objcount,
1111 struct obd_ioobj *obj, struct niobuf_remote *remote,
1112 int *nr_pages, struct niobuf_local *local,
1113 struct obd_trans_info *oti, struct lustre_capa *capa);
1114 int (*o_commitrw)(const struct lu_env *env, int cmd,
1115 struct obd_export *exp, struct obdo *oa,
1116 int objcount, struct obd_ioobj *obj,
1117 struct niobuf_remote *remote, int pages,
1118 struct niobuf_local *local,
1119 struct obd_trans_info *oti, int rc);
1120 int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *,
1121 ldlm_iterator_t it, void *data);
1122 int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *,
1123 ldlm_iterator_t it, void *data);
1124 int (*o_init_export)(struct obd_export *exp);
1125 int (*o_destroy_export)(struct obd_export *exp);
1127 /* llog related obd_methods */
1128 int (*o_llog_init)(struct obd_device *obd, struct obd_llog_group *grp,
1129 struct obd_device *disk_obd, int *idx);
1130 int (*o_llog_finish)(struct obd_device *obd, int count);
1131 int (*o_llog_connect)(struct obd_export *, struct llogd_conn_body *);
1133 /* metadata-only methods */
1134 int (*o_pin)(struct obd_export *, const struct lu_fid *fid,
1135 struct obd_capa *, struct obd_client_handle *, int flag);
1136 int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
1138 int (*o_import_event)(struct obd_device *, struct obd_import *,
1139 enum obd_import_event);
1141 int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
1142 enum obd_notify_event ev, void *data);
1144 int (*o_health_check)(const struct lu_env *env, struct obd_device *);
1145 struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
1148 int (*o_quotacheck)(struct obd_device *, struct obd_export *,
1149 struct obd_quotactl *);
1150 int (*o_quotactl)(struct obd_device *, struct obd_export *,
1151 struct obd_quotactl *);
1153 int (*o_ping)(const struct lu_env *, struct obd_export *exp);
1156 int (*o_pool_new)(struct obd_device *obd, char *poolname);
1157 int (*o_pool_del)(struct obd_device *obd, char *poolname);
1158 int (*o_pool_add)(struct obd_device *obd, char *poolname,
1160 int (*o_pool_rem)(struct obd_device *obd, char *poolname,
1162 void (*o_getref)(struct obd_device *obd);
1163 void (*o_putref)(struct obd_device *obd);
1165 * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
1166 * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
1167 * Also, add a wrapper function in include/linux/obd_class.h. */
1170 /* lmv structures */
1172 struct mdt_body *body;
1173 struct lov_stripe_md *lsm;
1174 struct lmv_stripe_md *lmv;
1175 #ifdef CONFIG_FS_POSIX_ACL
1176 struct posix_acl *posix_acl;
1178 struct mdt_remote_perm *remote_perm;
1179 struct obd_capa *mds_capa;
1180 struct obd_capa *oss_capa;
1184 struct md_open_data {
1185 struct obd_client_handle *mod_och;
1186 struct ptlrpc_request *mod_open_req;
1187 struct ptlrpc_request *mod_close_req;
1188 atomic_t mod_refcount;
1192 struct lookup_intent;
1196 /* Every operation from MD_STATS_FIRST_OP up to and including
1197 * MD_STATS_LAST_OP will be counted by EXP_MD_OP_INCREMENT()
1198 * and will appear in /proc/fs/lustre/{lmv,mdc}/.../md_stats.
1199 * Operations after MD_STATS_LAST_OP are excluded from stats.
1200 * There are a few reasons for doing this: we prune the 17
1201 * counters which will be of minimal use in understanding
1202 * metadata utilization, we save memory by allocating 15
1203 * instead of 32 counters, we save cycles by not counting.
1205 * MD_STATS_FIRST_OP must be the first member of md_ops.
1207 #define MD_STATS_FIRST_OP m_close
1208 int (*m_close)(struct obd_export *, struct md_op_data *,
1209 struct md_open_data *, struct ptlrpc_request **);
1211 int (*m_create)(struct obd_export *, struct md_op_data *,
1212 const void *, int, int, __u32, __u32, cfs_cap_t,
1213 __u64, struct ptlrpc_request **);
1215 int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
1216 struct lookup_intent *, struct md_op_data *,
1217 struct lustre_handle *, void *, int,
1218 struct ptlrpc_request **, __u64);
1220 int (*m_getattr)(struct obd_export *, struct md_op_data *,
1221 struct ptlrpc_request **);
1223 int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
1224 void *, int, struct lookup_intent *, int,
1225 struct ptlrpc_request **,
1226 ldlm_blocking_callback, __u64);
1228 int (*m_link)(struct obd_export *, struct md_op_data *,
1229 struct ptlrpc_request **);
1231 int (*m_rename)(struct obd_export *, struct md_op_data *,
1232 const char *, int, const char *, int,
1233 struct ptlrpc_request **);
1235 int (*m_setattr)(struct obd_export *, struct md_op_data *, void *,
1236 int , void *, int, struct ptlrpc_request **,
1237 struct md_open_data **mod);
1239 int (*m_fsync)(struct obd_export *, const struct lu_fid *,
1240 struct obd_capa *, struct ptlrpc_request **);
1242 int (*m_readpage)(struct obd_export *, struct md_op_data *,
1243 struct page **, struct ptlrpc_request **);
1245 int (*m_read_entry)(struct obd_export *, struct md_op_data *,
1246 struct md_callback *cb_op, struct lu_dirent **ld,
1247 struct page **ppage);
1249 int (*m_unlink)(struct obd_export *, struct md_op_data *,
1250 struct ptlrpc_request **);
1252 int (*m_setxattr)(struct obd_export *, const struct lu_fid *,
1253 struct obd_capa *, obd_valid, const char *,
1254 const char *, int, int, int, __u32,
1255 struct ptlrpc_request **);
1257 int (*m_getxattr)(struct obd_export *, const struct lu_fid *,
1258 struct obd_capa *, obd_valid, const char *,
1259 const char *, int, int, int,
1260 struct ptlrpc_request **);
1262 int (*m_intent_getattr_async)(struct obd_export *,
1263 struct md_enqueue_info *,
1264 struct ldlm_enqueue_info *);
1266 int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *,
1267 struct lu_fid *, __u64 *bits);
1268 #define MD_STATS_LAST_OP m_revalidate_lock
1270 int (*m_getstatus)(struct obd_export *, struct lu_fid *,
1271 struct obd_capa **);
1273 int (*m_null_inode)(struct obd_export *, const struct lu_fid *);
1275 int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *,
1276 ldlm_iterator_t, void *);
1278 int (*m_done_writing)(struct obd_export *, struct md_op_data *,
1279 struct md_open_data *);
1281 int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
1282 struct ptlrpc_request **);
1284 int (*m_is_subdir)(struct obd_export *, const struct lu_fid *,
1285 const struct lu_fid *,
1286 struct ptlrpc_request **);
1288 int (*m_init_ea_size)(struct obd_export *, int, int, int, int);
1290 int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *,
1291 struct obd_export *, struct obd_export *,
1292 struct lustre_md *);
1294 int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *);
1296 int (*m_merge_attr)(struct obd_export *,
1297 const struct lmv_stripe_md *lsm,
1298 struct cl_attr *attr);
1300 int (*m_update_lsm_md)(struct obd_export *, struct lmv_stripe_md *lsm,
1301 struct mdt_body *, ldlm_blocking_callback);
1303 int (*m_set_open_replay_data)(struct obd_export *,
1304 struct obd_client_handle *,
1305 struct lookup_intent *);
1307 int (*m_clear_open_replay_data)(struct obd_export *,
1308 struct obd_client_handle *);
1310 int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
1312 ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64,
1313 const struct lu_fid *, ldlm_type_t,
1314 ldlm_policy_data_t *, ldlm_mode_t,
1315 struct lustre_handle *);
1317 int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *,
1318 ldlm_policy_data_t *, ldlm_mode_t,
1319 ldlm_cancel_flags_t flags, void *opaque);
1321 int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc,
1322 renew_capa_cb_t cb);
1324 int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *,
1325 const struct req_msg_field *, struct obd_capa **);
1327 int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *,
1328 struct obd_capa *, __u32,
1329 struct ptlrpc_request **);
1332 struct lsm_operations {
1333 void (*lsm_free)(struct lov_stripe_md *);
1334 int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa,
1335 struct obd_export *md_exp);
1336 void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, obd_off *,
1338 void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *,
1340 int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes,
1341 __u16 *stripe_count);
1342 int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm,
1343 struct lov_mds_md *lmm);
1346 extern const struct lsm_operations lsm_v1_ops;
1347 extern const struct lsm_operations lsm_v3_ops;
1348 static inline const struct lsm_operations *lsm_op_find(int magic)
1356 CERROR("Cannot recognize lsm_magic %08x\n", magic);
1361 /* Requests for obd_extent_calc() */
1362 #define OBD_CALC_STRIPE_START 1
1363 #define OBD_CALC_STRIPE_END 2
1365 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
1367 return oinfo->oi_capa;
1370 static inline struct md_open_data *obd_mod_alloc(void)
1372 struct md_open_data *mod;
1376 atomic_set(&mod->mod_refcount, 1);
1380 #define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
1381 #define obd_mod_put(mod) \
1383 if (atomic_dec_and_test(&(mod)->mod_refcount)) { \
1384 if ((mod)->mod_open_req) \
1385 ptlrpc_req_finished((mod)->mod_open_req); \
1386 OBD_FREE_PTR(mod); \
1390 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
1391 void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent);
1393 /* return 1 if client should be resend request */
1394 static inline int client_should_resend(int resend, struct client_obd *cli)
1396 return atomic_read(&cli->cl_resends) ?
1397 atomic_read(&cli->cl_resends) > resend : 1;
1401 * Return device name for this device
1403 * XXX: lu_device is declared before obd_device, while a pointer pointing
1404 * back to obd_device in lu_device, so this helper function defines here
1405 * instead of in lu_object.h
1407 static inline const char *lu_dev_name(const struct lu_device *lu_dev)
1409 return lu_dev->ld_obd->obd_name;
1412 static inline bool filename_is_volatile(const char *name, int namelen, int *idx)
1417 if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0)
1420 /* caller does not care of idx */
1424 /* volatile file, the MDT can be set from name */
1425 /* name format is LUSTRE_VOLATILE_HDR:[idx]: */
1426 /* if no MDT is specified, use std way */
1427 if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2)
1429 /* test for no MDT idx case */
1430 if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') &&
1431 (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) {
1435 /* we have an idx, read it */
1436 start = name + LUSTRE_VOLATILE_HDR_LEN + 1;
1437 *idx = strtoul(start, &end, 16);
1439 * no digit, no trailing :, negative value
1441 if (((*idx == 0) && (end == start)) ||
1442 (*end != ':') || (*idx < 0))
1447 /* bad format of mdt idx, we cannot return an error
1448 * to caller so we use hash algo */
1449 CERROR("Bad volatile file name format: %s\n",
1450 name + LUSTRE_VOLATILE_HDR_LEN);
1454 static inline int cli_brw_size(struct obd_device *obd)
1456 LASSERT(obd != NULL);
1457 return obd->u.cli.cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
1460 #endif /* __OBD_H */