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 cfs_list_t typ_chain;
194 struct obd_ops *typ_dt_ops;
195 struct md_ops *typ_md_ops;
196 cfs_proc_dir_entry_t *typ_procroot;
199 struct lu_device_type *typ_lu;
200 spinlock_t obd_type_lock;
212 LLOG_CONFIG_ORIG_CTXT = 0,
213 LLOG_CONFIG_REPL_CTXT,
214 LLOG_MDS_OST_ORIG_CTXT,
215 LLOG_MDS_OST_REPL_CTXT,
222 LLOG_LOVEA_ORIG_CTXT,
223 LLOG_LOVEA_REPL_CTXT,
224 LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */
225 LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */
226 LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */
227 LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */
231 struct timeout_item {
232 enum timeout_event ti_event;
233 cfs_time_t ti_timeout;
236 cfs_list_t ti_obd_list;
240 #define OSC_MAX_RIF_DEFAULT 8
241 #define MDS_OSC_MAX_RIF_DEFAULT 50
242 #define OSC_MAX_RIF_MAX 256
243 #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
244 #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
245 #define OSC_DEFAULT_RESENDS 10
247 /* possible values for fo_sync_lock_cancel */
249 NEVER_SYNC_ON_CANCEL = 0,
250 BLOCKING_SYNC_ON_CANCEL = 1,
251 ALWAYS_SYNC_ON_CANCEL = 2,
252 NUM_SYNC_ON_CANCEL_STATES
255 #define MDC_MAX_RIF_DEFAULT 8
256 #define MDC_MAX_RIF_MAX 512
261 struct rw_semaphore cl_sem;
262 struct obd_uuid cl_target_uuid;
263 struct obd_import *cl_import; /* ptlrpc connection state */
265 /* max_mds_easize is purely a performance thing so we don't have to
266 * call obd_size_diskmd() all the time. */
267 int cl_default_mds_easize;
268 int cl_max_mds_easize;
269 int cl_default_mds_cookiesize;
270 int cl_max_mds_cookiesize;
272 enum lustre_sec_part cl_sp_me;
273 enum lustre_sec_part cl_sp_to;
274 struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
276 /* the grant values are protected by loi_list_lock below */
277 long cl_dirty; /* all _dirty_ in bytes */
278 long cl_dirty_max; /* allowed w/o rpc */
279 long cl_dirty_transit; /* dirty synchronous */
280 long cl_avail_grant; /* bytes of credit for ost */
281 long cl_lost_grant; /* lost credits (trunc) */
283 /* since we allocate grant by blocks, we don't know how many grant will
284 * be used to add a page into cache. As a solution, we reserve maximum
285 * grant before trying to dirty a page and unreserve the rest.
286 * See osc_{reserve|unreserve}_grant for details. */
287 long cl_reserved_grant;
288 cfs_list_t cl_cache_waiters; /* waiting for cache/grant */
289 cfs_time_t cl_next_shrink_grant; /* jiffies */
290 cfs_list_t cl_grant_shrink_list; /* Timeout event list */
291 int cl_grant_shrink_interval; /* seconds */
293 /* A chunk is an optimal size used by osc_extent to determine
294 * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */
297 int cl_extent_tax; /* extent overhead, by bytes */
299 /* keep track of objects that have lois that contain pages which
300 * have been queued for async brw. this lock also protects the
301 * lists of osc_client_pages that hang off of the loi */
303 * ->cl_loi_list_lock protects consistency of
304 * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
305 * ->ap_completion() call-backs are executed under this lock. As we
306 * cannot guarantee that these call-backs never block on all platforms
307 * (as a matter of fact they do block on Mac OS X), type of
308 * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
309 * and blocking mutex on Mac OS X. (Alternative is to make this lock
310 * blocking everywhere, but we don't want to slow down fast-path of
311 * our main platform.)
313 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
314 * with client_obd_list_{un,}lock() and
315 * client_obd_list_lock_{init,done}() functions.
317 * NB by Jinshan: though field names are still _loi_, but actually
318 * osc_object{}s are in the list.
320 client_obd_lock_t cl_loi_list_lock;
321 cfs_list_t cl_loi_ready_list;
322 cfs_list_t cl_loi_hp_ready_list;
323 cfs_list_t cl_loi_write_list;
324 cfs_list_t cl_loi_read_list;
327 /* just a sum of the loi/lop pending numbers to be exported by /proc */
328 atomic_t cl_pending_w_pages;
329 atomic_t cl_pending_r_pages;
330 __u32 cl_max_pages_per_rpc;
331 int cl_max_rpcs_in_flight;
332 struct obd_histogram cl_read_rpc_hist;
333 struct obd_histogram cl_write_rpc_hist;
334 struct obd_histogram cl_read_page_hist;
335 struct obd_histogram cl_write_page_hist;
336 struct obd_histogram cl_read_offset_hist;
337 struct obd_histogram cl_write_offset_hist;
339 /* lru for osc caching pages */
340 struct cl_client_cache *cl_cache;
341 cfs_list_t cl_lru_osc; /* member of cl_cache->ccc_lru */
342 atomic_t *cl_lru_left;
343 atomic_t cl_lru_busy;
344 atomic_t cl_lru_shrinkers;
345 atomic_t cl_lru_in_list;
346 cfs_list_t cl_lru_list; /* lru page list */
347 client_obd_lock_t cl_lru_list_lock; /* page list protector */
348 atomic_t cl_unstable_count;
350 /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
351 atomic_t cl_destroy_in_flight;
352 wait_queue_head_t cl_destroy_waitq;
354 struct mdc_rpc_lock *cl_rpc_lock;
355 struct mdc_rpc_lock *cl_close_lock;
358 struct semaphore cl_mgc_sem;
359 struct local_oid_storage *cl_mgc_los;
360 struct dt_object *cl_mgc_configs_dir;
361 atomic_t cl_mgc_refcount;
362 struct obd_export *cl_mgc_mgsexp;
364 /* checksumming for data sent over the network */
365 unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */
366 /* supported checksum types that are worked out at connect time */
367 __u32 cl_supp_cksum_types;
368 /* checksum algorithm to be used */
369 cksum_type_t cl_cksum_type;
371 /* also protected by the poorly named _loi_list_lock lock above */
372 struct osc_async_rc cl_ar;
374 /* used by quotacheck when the servers are older than 2.4 */
375 int cl_qchk_stat; /* quotacheck stat of the peer */
376 #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
377 #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
378 #warning "please consider removing quotacheck compatibility code"
381 /* sequence manager */
382 struct lu_client_seq *cl_seq;
384 atomic_t cl_resends; /* resend count */
386 /* ptlrpc work for writeback in ptlrpcd context */
387 void *cl_writeback_work;
389 /* hash tables for osc_quota_info */
390 cfs_hash_t *cl_quota_hash[MAXQUOTAS];
392 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
399 struct echo_client_obd {
400 struct obd_export *ec_exp; /* the local connection to osc/lov */
402 cfs_list_t ec_objects;
408 /* Generic subset of OSTs */
410 __u32 *op_array; /* array of index of
412 unsigned int op_count; /* number of OSTs in the array */
413 unsigned int op_size; /* allocated size of lp_array */
414 struct rw_semaphore op_rw_sem; /* to protect ost_pool use */
417 /* allow statfs data caching for 1 second */
418 #define OBD_STATFS_CACHE_SECONDS 1
420 struct lov_tgt_desc {
422 struct obd_uuid ltd_uuid;
423 struct obd_device *ltd_obd;
424 struct obd_export *ltd_exp;
426 __u32 ltd_index; /* index in lov_obd->tgts */
427 unsigned long ltd_active:1,/* is this target up for requests */
428 ltd_activate:1,/* should target be activated */
429 ltd_reap:1; /* should this target be deleted */
433 struct lov_desc desc;
434 struct lov_tgt_desc **lov_tgts; /* sparse array */
435 struct ost_pool lov_packed; /* all OSTs in a packed
437 struct mutex lov_lock;
438 struct obd_connect_data lov_ocd;
439 atomic_t lov_refcount;
440 __u32 lov_death_row; /* tgts scheduled to be deleted */
441 __u32 lov_tgt_size; /* size of tgts array */
444 cfs_hash_t *lov_pools_hash_body; /* used for key access */
445 cfs_list_t lov_pool_list; /* used for sequential access */
446 cfs_proc_dir_entry_t *lov_pool_proc_entry;
447 enum lustre_sec_part lov_sp_me;
449 /* Cached LRU and unstable data from upper layer */
452 struct rw_semaphore lov_notify_lock;
455 struct lmv_tgt_desc {
456 struct obd_uuid ltd_uuid;
457 struct obd_export *ltd_exp;
459 struct mutex ltd_fid_mutex;
460 unsigned long ltd_active:1; /* target up for requests */
463 enum placement_policy {
464 PLACEMENT_CHAR_POLICY = 0,
465 PLACEMENT_NID_POLICY = 1,
466 PLACEMENT_INVAL_POLICY = 2,
470 typedef enum placement_policy placement_policy_t;
474 struct lu_client_fld lmv_fld;
476 placement_policy_t lmv_placement;
477 struct lmv_desc desc;
478 struct obd_uuid cluuid;
479 struct obd_export *exp;
481 struct mutex init_mutex;
486 int max_def_cookiesize;
489 int tgts_size; /* size of tgts array */
490 struct lmv_tgt_desc **tgts;
492 struct obd_connect_data conn_data;
495 struct niobuf_local {
496 __u64 lnb_file_offset;
497 __u32 lnb_page_offset;
501 struct dentry *dentry;
506 #define LUSTRE_FLD_NAME "fld"
507 #define LUSTRE_SEQ_NAME "seq"
509 #define LUSTRE_MDD_NAME "mdd"
510 #define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs"
511 #define LUSTRE_OSD_ZFS_NAME "osd-zfs"
512 #define LUSTRE_VVP_NAME "vvp"
513 #define LUSTRE_LMV_NAME "lmv"
514 #define LUSTRE_SLP_NAME "slp"
515 #define LUSTRE_LOD_NAME "lod"
516 #define LUSTRE_OSP_NAME "osp"
517 #define LUSTRE_LWP_NAME "lwp"
519 /* obd device type names */
520 /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
521 #define LUSTRE_MDS_NAME "mds"
522 #define LUSTRE_MDT_NAME "mdt"
523 #define LUSTRE_MDC_NAME "mdc"
524 #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
525 #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
526 #define LUSTRE_OSC_NAME "osc"
527 #define LUSTRE_LOV_NAME "lov"
528 #define LUSTRE_MGS_NAME "mgs"
529 #define LUSTRE_MGC_NAME "mgc"
531 #define LUSTRE_ECHO_NAME "obdecho"
532 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
533 #define LUSTRE_QMT_NAME "qmt"
535 /* Constant obd names (post-rename) */
536 #define LUSTRE_MDS_OBDNAME "MDS"
537 #define LUSTRE_OSS_OBDNAME "OSS"
538 #define LUSTRE_MGS_OBDNAME "MGS"
539 #define LUSTRE_MGC_OBDNAME "MGC"
541 static inline int is_osp_on_mdt(char *name)
545 ptr = strrchr(name, '-');
547 CERROR("%s is not a obdname\n", name);
551 /* 1.8 OSC/OSP name on MDT is fsname-OSTxxxx-osc */
552 if (strncmp(ptr + 1, "osc", 3) == 0)
555 if (strncmp(ptr + 1, "MDT", 3) != 0)
558 while (*(--ptr) != '-' && ptr != name);
563 if (strncmp(ptr + 1, LUSTRE_OSP_NAME, strlen(LUSTRE_OSP_NAME)) != 0 &&
564 strncmp(ptr + 1, LUSTRE_OSC_NAME, strlen(LUSTRE_OSC_NAME)) != 0)
570 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
571 #define N_LOCAL_TEMP_PAGE 0x10000000
573 struct obd_trans_info {
576 /* Only used on the server side for tracking acks. */
577 struct oti_req_ack_lock {
578 struct lustre_handle lock;
582 struct llog_cookie oti_onecookie;
583 struct llog_cookie *oti_logcookies;
585 /** synchronous write is needed */
586 unsigned long oti_sync_write:1;
588 /* initial thread handling transaction */
589 struct ptlrpc_thread * oti_thread;
592 __u64 oti_pre_version;
596 struct obd_uuid *oti_ost_uuid;
599 static inline void oti_init(struct obd_trans_info *oti,
600 struct ptlrpc_request *req)
604 memset(oti, 0, sizeof(*oti));
609 oti->oti_xid = req->rq_xid;
610 /** VBR: take versions from request */
611 if (req->rq_reqmsg != NULL &&
612 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
613 __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
614 oti->oti_pre_version = pre_version ? pre_version[0] : 0;
615 oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg);
618 /** called from mds_create_objects */
619 if (req->rq_repmsg != NULL)
620 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
621 oti->oti_thread = req->rq_svc_thread;
622 if (req->rq_reqmsg != NULL)
623 oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
626 static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
631 if (num_cookies == 1)
632 oti->oti_logcookies = &oti->oti_onecookie;
634 OBD_ALLOC_LARGE(oti->oti_logcookies,
635 num_cookies * sizeof(oti->oti_onecookie));
637 oti->oti_numcookies = num_cookies;
640 static inline void oti_free_cookies(struct obd_trans_info *oti)
642 if (!oti || !oti->oti_logcookies)
645 if (oti->oti_logcookies == &oti->oti_onecookie)
646 LASSERT(oti->oti_numcookies == 1);
648 OBD_FREE_LARGE(oti->oti_logcookies,
649 oti->oti_numcookies*sizeof(oti->oti_onecookie));
650 oti->oti_logcookies = NULL;
651 oti->oti_numcookies = 0;
655 * Events signalled through obd_notify() upcall-chain.
657 enum obd_notify_event {
660 /* Device connect start */
662 /* Device activated */
664 /* Device deactivated */
666 /* Device disconnected */
668 /* Connect data for import were changed */
671 OBD_NOTIFY_SYNC_NONBLOCK,
673 /* Configuration event */
675 /* Administratively deactivate/activate event */
676 OBD_NOTIFY_DEACTIVATE,
680 /* bit-mask flags for config events */
682 CONFIG_LOG = 0x1, /* finished processing config log */
683 CONFIG_SYNC = 0x2, /* mdt synced 1 ost */
684 CONFIG_TARGET = 0x4 /* one target is added */
688 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
689 * and liblustre being main examples).
691 struct obd_notify_upcall {
692 int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
693 enum obd_notify_event ev, void *owner, void *data);
694 /* Opaque datum supplied by upper layer listener */
698 struct target_recovery_data {
699 svc_handler_t trd_recovery_handler;
700 pid_t trd_processing_task;
701 struct completion trd_starting;
702 struct completion trd_finishing;
705 struct obd_llog_group {
707 struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS];
708 wait_queue_head_t olg_waitq;
710 struct mutex olg_cat_processing;
713 /* corresponds to one of the obd's */
714 #define OBD_DEVICE_MAGIC 0XAB5CD6EF
715 #define OBD_DEV_BY_DEVNAME 0xffffd0de
718 struct obd_type *obd_type;
721 /* common and UUID name of this device */
722 char obd_name[MAX_OBD_NAME];
723 struct obd_uuid obd_uuid;
725 struct lu_device *obd_lu_dev;
727 /* bitfield modification is protected by obd_dev_lock */
729 obd_attached:1, /* finished attach */
730 obd_set_up:1, /* finished setup */
731 obd_recovering:1, /* there are recoverable clients */
732 obd_abort_recovery:1, /* recovery expired */
733 obd_version_recov:1, /* obd uses version checking */
734 obd_replayable:1, /* recovery is enabled;
736 obd_no_transno:1, /* no committed-transno notification */
737 obd_no_recov:1, /* fail instead of retry messages */
738 obd_stopping:1, /* started cleanup */
739 obd_starting:1, /* started setup */
740 obd_force:1, /* cleanup with > 0 obd refcount */
741 obd_fail:1, /* cleanup with failover */
742 obd_async_recov:1, /* allow asynchronous orphan cleanup */
743 obd_no_conn:1, /* deny new connections */
744 obd_inactive:1, /* device active/inactive
745 * (for /proc/status only!!) */
746 obd_no_ir:1, /* no imperative recovery. */
747 obd_process_conf:1, /* device is processing mgs config */
748 obd_uses_nid_stats:1; /* maintain per-client OBD stats */
750 /* use separate field as it is set in interrupt to don't mess with
751 * protection of other bits using _bh lock */
752 unsigned long obd_recovery_expired:1;
753 /* uuid-export hash body */
754 cfs_hash_t *obd_uuid_hash;
755 /* nid-export hash body */
756 cfs_hash_t *obd_nid_hash;
758 cfs_hash_t *obd_nid_stats_hash;
759 cfs_list_t obd_nid_stats;
760 atomic_t obd_refcount;
761 cfs_list_t obd_exports;
762 cfs_list_t obd_unlinked_exports;
763 cfs_list_t obd_delayed_exports;
764 struct list_head obd_lwp_list;
766 spinlock_t obd_nid_lock;
767 struct ldlm_namespace *obd_namespace;
768 struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
769 /* a spinlock is OK for what we do now, may need a semaphore later */
770 spinlock_t obd_dev_lock; /* protect OBD bitfield above */
771 struct mutex obd_dev_mutex;
772 __u64 obd_last_committed;
773 spinlock_t obd_osfs_lock;
774 struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */
776 struct lvfs_run_ctxt obd_lvfs_ctxt;
777 struct obd_llog_group obd_olg; /* default llog group */
778 struct obd_device *obd_observer;
779 struct rw_semaphore obd_observer_link_sem;
780 struct obd_notify_upcall obd_upcall;
781 struct obd_export *obd_self_export;
782 struct obd_export *obd_lwp_export;
783 /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
784 cfs_list_t obd_exports_timed;
785 time_t obd_eviction_timer; /* for ping evictor */
787 int obd_max_recoverable_clients;
788 atomic_t obd_connected_clients;
789 int obd_stale_clients;
790 int obd_delayed_clients;
791 /* this lock protects all recovery list_heads, timer and
792 * obd_next_recovery_transno value */
793 spinlock_t obd_recovery_task_lock;
794 __u64 obd_next_recovery_transno;
795 int obd_replayed_requests;
796 int obd_requests_queued_for_recovery;
797 wait_queue_head_t obd_next_transno_waitq;
798 /* protected by obd_recovery_task_lock */
799 struct timer_list obd_recovery_timer;
800 time_t obd_recovery_start; /* seconds */
801 time_t obd_recovery_end; /* seconds, for lprocfs_status */
802 int obd_recovery_time_hard;
803 int obd_recovery_timeout;
804 int obd_recovery_ir_factor;
806 /* new recovery stuff from CMD2 */
807 struct target_recovery_data obd_recovery_data;
808 int obd_replayed_locks;
809 atomic_t obd_req_replay_clients;
810 atomic_t obd_lock_replay_clients;
811 /* all lists are protected by obd_recovery_task_lock */
812 cfs_list_t obd_req_replay_queue;
813 cfs_list_t obd_lock_replay_queue;
814 cfs_list_t obd_final_req_queue;
817 #ifdef HAVE_SERVER_SUPPORT
818 struct obd_device_target obt;
819 struct filter_obd filter;
821 struct echo_obd echo;
823 struct client_obd cli;
824 struct echo_client_obd echo_client;
828 /* Fields used by LProcFS */
829 unsigned int obd_cntr_base;
830 struct lprocfs_stats *obd_stats;
832 unsigned int obd_md_cntr_base;
833 struct lprocfs_stats *obd_md_stats;
835 struct proc_dir_entry *obd_proc_entry;
836 struct proc_dir_entry *obd_proc_exports_entry;
837 void *obd_proc_private; /* type private PDEs */
838 struct proc_dir_entry *obd_svc_procroot;
839 struct lprocfs_stats *obd_svc_stats;
840 struct lprocfs_seq_vars *obd_vars;
841 atomic_t obd_evict_inprogress;
842 wait_queue_head_t obd_evict_inprogress_waitq;
843 cfs_list_t obd_evict_list; /* protected with pet_lock */
846 * Ldlm pool part. Save last calculated SLV and Limit.
848 rwlock_t obd_pool_lock;
853 * A list of outstanding class_incref()'s against this obd. For
856 struct lu_ref obd_reference;
858 int obd_conn_inprogress;
861 #define OBD_LLOG_FL_SENDNOW 0x0001
862 #define OBD_LLOG_FL_EXIT 0x0002
864 enum obd_cleanup_stage {
865 /* Special case hack for MDS LOVs */
867 /* can be directly mapped to .ldto_device_fini() */
871 /* get/set_info keys */
872 #define KEY_ASYNC "async"
873 #define KEY_BLOCKSIZE_BITS "blocksize_bits"
874 #define KEY_BLOCKSIZE "blocksize"
875 #define KEY_CAPA_KEY "capa_key"
876 #define KEY_CHANGELOG_CLEAR "changelog_clear"
877 #define KEY_FID2PATH "fid2path"
878 #define KEY_CHECKSUM "checksum"
879 #define KEY_CLEAR_FS "clear_fs"
880 #define KEY_CONN_DATA "conn_data"
881 #define KEY_EVICT_BY_NID "evict_by_nid"
882 #define KEY_FIEMAP "fiemap"
883 #define KEY_FLUSH_CTX "flush_ctx"
884 #define KEY_GRANT_SHRINK "grant_shrink"
885 #define KEY_HSM_COPYTOOL_SEND "hsm_send"
886 #define KEY_INIT_RECOV_BACKUP "init_recov_bk"
887 #define KEY_INIT_RECOV "initial_recov"
888 #define KEY_INTERMDS "inter_mds"
889 #define KEY_LAST_ID "last_id"
890 #define KEY_LAST_FID "last_fid"
891 #define KEY_LOCK_TO_STRIPE "lock_to_stripe"
892 #define KEY_LOVDESC "lovdesc"
893 #define KEY_LOV_IDX "lov_idx"
894 #define KEY_MAX_EASIZE "max_easize"
895 #define KEY_DEFAULT_EASIZE "default_easize"
896 #define KEY_MAX_COOKIESIZE "max_cookiesize"
897 #define KEY_DEFAULT_COOKIESIZE "default_cookiesize"
898 #define KEY_MDS_CONN "mds_conn"
899 #define KEY_MGSSEC "mgssec"
900 #define KEY_NEXT_ID "next_id"
901 #define KEY_READ_ONLY "read-only"
902 #define KEY_REGISTER_TARGET "register_target"
903 #define KEY_SET_FS "set_fs"
904 #define KEY_TGT_COUNT "tgt_count"
905 /* KEY_SET_INFO in lustre_idl.h */
906 #define KEY_SPTLRPC_CONF "sptlrpc_conf"
907 #define KEY_CONNECT_FLAG "connect_flags"
908 #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
910 #define KEY_CACHE_SET "cache_set"
911 #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
912 #define KEY_CHANGELOG_INDEX "changelog_index"
913 #define KEY_OSP_CONNECTED "osp_connected"
917 /* /!\ must be coherent with include/linux/namei.h on patched kernel */
918 #define IT_OPEN (1 << 0)
919 #define IT_CREAT (1 << 1)
920 #define IT_READDIR (1 << 2)
921 #define IT_GETATTR (1 << 3)
922 #define IT_LOOKUP (1 << 4)
923 #define IT_UNLINK (1 << 5)
924 #define IT_TRUNC (1 << 6)
925 #define IT_GETXATTR (1 << 7)
926 #define IT_EXEC (1 << 8)
927 #define IT_PIN (1 << 9)
928 #define IT_LAYOUT (1 << 10)
929 #define IT_QUOTA_DQACQ (1 << 11)
930 #define IT_QUOTA_CONN (1 << 12)
931 #define IT_SETXATTR (1 << 13)
933 static inline int it_to_lock_mode(struct lookup_intent *it)
935 /* CREAT needs to be tested before open (both could be set) */
936 if (it->it_op & IT_CREAT)
938 else if (it->it_op & (IT_GETATTR | IT_OPEN | IT_LOOKUP |
941 else if (it->it_op & IT_READDIR)
943 else if (it->it_op & IT_GETXATTR)
945 else if (it->it_op & IT_SETXATTR)
948 LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
953 struct lu_fid op_fid1; /* operation fid1 (usualy parent) */
954 struct lu_fid op_fid2; /* operation fid2 (usualy child) */
955 struct lu_fid op_fid3; /* 2 extra fids to find conflicting */
956 struct lu_fid op_fid4; /* to the operation locks. */
957 mdsno_t op_mds; /* what mds server open will go to */
958 struct lustre_handle op_handle;
959 obd_time op_mod_time;
963 struct lmv_stripe_md *op_mea1;
964 struct lmv_stripe_md *op_mea2;
965 __u32 op_suppgids[2];
971 /* iattr fields and blocks. */
972 struct iattr op_attr;
974 unsigned int op_attr_flags;
977 loff_t op_attr_blocks;
979 /* Size-on-MDS epoch and flags. */
984 struct obd_capa *op_capa1;
985 struct obd_capa *op_capa2;
987 /* Various operation flags. */
988 enum mds_op_bias op_bias;
990 /* Used by readdir */
991 __u64 op_hash_offset;
993 /* Used by readdir */
996 /* used to transfer info between the stacks of MD client
997 * see enum op_cli_flags */
1000 /* File object data version for HSM release, on client */
1001 __u64 op_data_version;
1002 struct lustre_handle op_lease_handle;
1005 #define op_stripe_offset op_ioepoch
1006 #define op_max_pages op_valid
1008 struct md_callback {
1009 int (*md_blocking_ast)(struct ldlm_lock *lock,
1010 struct ldlm_lock_desc *desc,
1011 void *data, int flag);
1014 struct md_enqueue_info;
1015 /* metadata stat-ahead */
1016 typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req,
1017 struct md_enqueue_info *minfo,
1020 struct md_enqueue_info {
1021 struct md_op_data mi_data;
1022 struct lookup_intent mi_it;
1023 struct lustre_handle mi_lockh;
1024 struct inode *mi_dir;
1025 md_enqueue_cb_t mi_cb;
1027 unsigned int mi_generation;
1031 struct module *o_owner;
1032 int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
1033 void *karg, void *uarg);
1034 int (*o_get_info)(const struct lu_env *env, struct obd_export *,
1035 __u32 keylen, void *key, __u32 *vallen, void *val,
1036 struct lov_stripe_md *lsm);
1037 int (*o_set_info_async)(const struct lu_env *, struct obd_export *,
1038 __u32 keylen, void *key,
1039 __u32 vallen, void *val,
1040 struct ptlrpc_request_set *set);
1041 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
1042 int (*o_detach)(struct obd_device *dev);
1043 int (*o_setup) (struct obd_device *dev, struct lustre_cfg *cfg);
1044 int (*o_precleanup)(struct obd_device *dev,
1045 enum obd_cleanup_stage cleanup_stage);
1046 int (*o_cleanup)(struct obd_device *dev);
1047 int (*o_process_config)(struct obd_device *dev, obd_count len,
1049 int (*o_postrecov)(struct obd_device *dev);
1050 int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid,
1052 int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid);
1053 /* connect to the target device with given connection
1054 * data. @ocd->ocd_connect_flags is modified to reflect flags actually
1055 * granted by the target, which are guaranteed to be a subset of flags
1056 * asked for. If @ocd == NULL, use default parameters. */
1057 int (*o_connect)(const struct lu_env *env,
1058 struct obd_export **exp, struct obd_device *src,
1059 struct obd_uuid *cluuid, struct obd_connect_data *ocd,
1061 int (*o_reconnect)(const struct lu_env *env,
1062 struct obd_export *exp, struct obd_device *src,
1063 struct obd_uuid *cluuid,
1064 struct obd_connect_data *ocd,
1066 int (*o_disconnect)(struct obd_export *exp);
1068 /* Initialize/finalize fids infrastructure. */
1069 int (*o_fid_init)(struct obd_device *obd,
1070 struct obd_export *exp, enum lu_cli_type type);
1071 int (*o_fid_fini)(struct obd_device *obd);
1073 /* Allocate new fid according to passed @hint. */
1074 int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
1075 struct md_op_data *op_data);
1078 * Object with @fid is getting deleted, we may want to do something
1081 int (*o_statfs)(const struct lu_env *, struct obd_export *exp,
1082 struct obd_statfs *osfs, __u64 max_age, __u32 flags);
1083 int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo,
1084 __u64 max_age, struct ptlrpc_request_set *set);
1085 int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
1086 struct lov_stripe_md *mem_src);
1087 int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
1088 struct lov_mds_md *disk_src, int disk_len);
1089 int (*o_create)(const struct lu_env *env, struct obd_export *exp,
1090 struct obdo *oa, struct lov_stripe_md **ea,
1091 struct obd_trans_info *oti);
1092 int (*o_create_async)(struct obd_export *exp, struct obd_info *oinfo,
1093 struct lov_stripe_md **ea,
1094 struct obd_trans_info *oti);
1095 int (*o_destroy)(const struct lu_env *env, struct obd_export *exp,
1096 struct obdo *oa, struct lov_stripe_md *ea,
1097 struct obd_trans_info *oti, struct obd_export *md_exp,
1099 int (*o_setattr)(const struct lu_env *, struct obd_export *exp,
1100 struct obd_info *oinfo, struct obd_trans_info *oti);
1101 int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1102 struct obd_trans_info *oti,
1103 struct ptlrpc_request_set *rqset);
1104 int (*o_getattr)(const struct lu_env *env, struct obd_export *exp,
1105 struct obd_info *oinfo);
1106 int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1107 struct ptlrpc_request_set *set);
1108 int (*o_preprw)(const struct lu_env *env, int cmd,
1109 struct obd_export *exp, struct obdo *oa, int objcount,
1110 struct obd_ioobj *obj, struct niobuf_remote *remote,
1111 int *nr_pages, struct niobuf_local *local,
1112 struct obd_trans_info *oti, struct lustre_capa *capa);
1113 int (*o_commitrw)(const struct lu_env *env, int cmd,
1114 struct obd_export *exp, struct obdo *oa,
1115 int objcount, struct obd_ioobj *obj,
1116 struct niobuf_remote *remote, int pages,
1117 struct niobuf_local *local,
1118 struct obd_trans_info *oti, int rc);
1119 int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *,
1120 ldlm_iterator_t it, void *data);
1121 int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *,
1122 ldlm_iterator_t it, void *data);
1123 int (*o_init_export)(struct obd_export *exp);
1124 int (*o_destroy_export)(struct obd_export *exp);
1126 /* llog related obd_methods */
1127 int (*o_llog_init)(struct obd_device *obd, struct obd_llog_group *grp,
1128 struct obd_device *disk_obd, int *idx);
1129 int (*o_llog_finish)(struct obd_device *obd, int count);
1130 int (*o_llog_connect)(struct obd_export *, struct llogd_conn_body *);
1132 /* metadata-only methods */
1133 int (*o_pin)(struct obd_export *, const struct lu_fid *fid,
1134 struct obd_capa *, struct obd_client_handle *, int flag);
1135 int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
1137 int (*o_import_event)(struct obd_device *, struct obd_import *,
1138 enum obd_import_event);
1140 int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
1141 enum obd_notify_event ev, void *data);
1143 int (*o_health_check)(const struct lu_env *env, struct obd_device *);
1144 struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
1147 int (*o_quotacheck)(struct obd_device *, struct obd_export *,
1148 struct obd_quotactl *);
1149 int (*o_quotactl)(struct obd_device *, struct obd_export *,
1150 struct obd_quotactl *);
1152 int (*o_ping)(const struct lu_env *, struct obd_export *exp);
1155 int (*o_pool_new)(struct obd_device *obd, char *poolname);
1156 int (*o_pool_del)(struct obd_device *obd, char *poolname);
1157 int (*o_pool_add)(struct obd_device *obd, char *poolname,
1159 int (*o_pool_rem)(struct obd_device *obd, char *poolname,
1161 void (*o_getref)(struct obd_device *obd);
1162 void (*o_putref)(struct obd_device *obd);
1164 * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
1165 * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
1166 * Also, add a wrapper function in include/linux/obd_class.h. */
1169 /* lmv structures */
1171 struct mdt_body *body;
1172 struct lov_stripe_md *lsm;
1173 struct lmv_stripe_md *lmv;
1174 #ifdef CONFIG_FS_POSIX_ACL
1175 struct posix_acl *posix_acl;
1177 struct mdt_remote_perm *remote_perm;
1178 struct obd_capa *mds_capa;
1179 struct obd_capa *oss_capa;
1183 struct md_open_data {
1184 struct obd_client_handle *mod_och;
1185 struct ptlrpc_request *mod_open_req;
1186 struct ptlrpc_request *mod_close_req;
1187 atomic_t mod_refcount;
1191 struct lookup_intent;
1195 /* Every operation from MD_STATS_FIRST_OP up to and including
1196 * MD_STATS_LAST_OP will be counted by EXP_MD_OP_INCREMENT()
1197 * and will appear in /proc/fs/lustre/{lmv,mdc}/.../md_stats.
1198 * Operations after MD_STATS_LAST_OP are excluded from stats.
1199 * There are a few reasons for doing this: we prune the 17
1200 * counters which will be of minimal use in understanding
1201 * metadata utilization, we save memory by allocating 15
1202 * instead of 32 counters, we save cycles by not counting.
1204 * MD_STATS_FIRST_OP must be the first member of md_ops.
1206 #define MD_STATS_FIRST_OP m_close
1207 int (*m_close)(struct obd_export *, struct md_op_data *,
1208 struct md_open_data *, struct ptlrpc_request **);
1210 int (*m_create)(struct obd_export *, struct md_op_data *,
1211 const void *, int, int, __u32, __u32, cfs_cap_t,
1212 __u64, struct ptlrpc_request **);
1214 int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
1215 struct lookup_intent *, struct md_op_data *,
1216 struct lustre_handle *, void *, int,
1217 struct ptlrpc_request **, __u64);
1219 int (*m_getattr)(struct obd_export *, struct md_op_data *,
1220 struct ptlrpc_request **);
1222 int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
1223 void *, int, struct lookup_intent *, int,
1224 struct ptlrpc_request **,
1225 ldlm_blocking_callback, __u64);
1227 int (*m_link)(struct obd_export *, struct md_op_data *,
1228 struct ptlrpc_request **);
1230 int (*m_rename)(struct obd_export *, struct md_op_data *,
1231 const char *, int, const char *, int,
1232 struct ptlrpc_request **);
1234 int (*m_setattr)(struct obd_export *, struct md_op_data *, void *,
1235 int , void *, int, struct ptlrpc_request **,
1236 struct md_open_data **mod);
1238 int (*m_fsync)(struct obd_export *, const struct lu_fid *,
1239 struct obd_capa *, struct ptlrpc_request **);
1241 int (*m_readpage)(struct obd_export *, struct md_op_data *,
1242 struct page **, struct ptlrpc_request **);
1244 int (*m_read_entry)(struct obd_export *, struct md_op_data *,
1245 struct md_callback *cb_op, struct lu_dirent **ld,
1246 struct page **ppage);
1248 int (*m_unlink)(struct obd_export *, struct md_op_data *,
1249 struct ptlrpc_request **);
1251 int (*m_setxattr)(struct obd_export *, const struct lu_fid *,
1252 struct obd_capa *, obd_valid, const char *,
1253 const char *, int, int, int, __u32,
1254 struct ptlrpc_request **);
1256 int (*m_getxattr)(struct obd_export *, const struct lu_fid *,
1257 struct obd_capa *, obd_valid, const char *,
1258 const char *, int, int, int,
1259 struct ptlrpc_request **);
1261 int (*m_intent_getattr_async)(struct obd_export *,
1262 struct md_enqueue_info *,
1263 struct ldlm_enqueue_info *);
1265 int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *,
1266 struct lu_fid *, __u64 *bits);
1267 #define MD_STATS_LAST_OP m_revalidate_lock
1269 int (*m_getstatus)(struct obd_export *, struct lu_fid *,
1270 struct obd_capa **);
1272 int (*m_null_inode)(struct obd_export *, const struct lu_fid *);
1274 int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *,
1275 ldlm_iterator_t, void *);
1277 int (*m_done_writing)(struct obd_export *, struct md_op_data *,
1278 struct md_open_data *);
1280 int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
1281 struct ptlrpc_request **);
1283 int (*m_is_subdir)(struct obd_export *, const struct lu_fid *,
1284 const struct lu_fid *,
1285 struct ptlrpc_request **);
1287 int (*m_init_ea_size)(struct obd_export *, int, int, int, int);
1289 int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *,
1290 struct obd_export *, struct obd_export *,
1291 struct lustre_md *);
1293 int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *);
1295 int (*m_merge_attr)(struct obd_export *,
1296 const struct lmv_stripe_md *lsm,
1297 struct cl_attr *attr);
1299 int (*m_update_lsm_md)(struct obd_export *, struct lmv_stripe_md *lsm,
1300 struct mdt_body *, ldlm_blocking_callback);
1302 int (*m_set_open_replay_data)(struct obd_export *,
1303 struct obd_client_handle *,
1304 struct lookup_intent *);
1306 int (*m_clear_open_replay_data)(struct obd_export *,
1307 struct obd_client_handle *);
1309 int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
1311 ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64,
1312 const struct lu_fid *, ldlm_type_t,
1313 ldlm_policy_data_t *, ldlm_mode_t,
1314 struct lustre_handle *);
1316 int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *,
1317 ldlm_policy_data_t *, ldlm_mode_t,
1318 ldlm_cancel_flags_t flags, void *opaque);
1320 int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc,
1321 renew_capa_cb_t cb);
1323 int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *,
1324 const struct req_msg_field *, struct obd_capa **);
1326 int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *,
1327 struct obd_capa *, __u32,
1328 struct ptlrpc_request **);
1331 struct lsm_operations {
1332 void (*lsm_free)(struct lov_stripe_md *);
1333 int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa,
1334 struct obd_export *md_exp);
1335 void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, obd_off *,
1337 void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *,
1339 int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes,
1340 __u16 *stripe_count);
1341 int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm,
1342 struct lov_mds_md *lmm);
1345 extern const struct lsm_operations lsm_v1_ops;
1346 extern const struct lsm_operations lsm_v3_ops;
1347 static inline const struct lsm_operations *lsm_op_find(int magic)
1355 CERROR("Cannot recognize lsm_magic %08x\n", magic);
1360 /* Requests for obd_extent_calc() */
1361 #define OBD_CALC_STRIPE_START 1
1362 #define OBD_CALC_STRIPE_END 2
1364 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
1366 return oinfo->oi_capa;
1369 static inline struct md_open_data *obd_mod_alloc(void)
1371 struct md_open_data *mod;
1375 atomic_set(&mod->mod_refcount, 1);
1379 #define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
1380 #define obd_mod_put(mod) \
1382 if (atomic_dec_and_test(&(mod)->mod_refcount)) { \
1383 if ((mod)->mod_open_req) \
1384 ptlrpc_req_finished((mod)->mod_open_req); \
1385 OBD_FREE_PTR(mod); \
1389 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
1390 void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent);
1392 /* return 1 if client should be resend request */
1393 static inline int client_should_resend(int resend, struct client_obd *cli)
1395 return atomic_read(&cli->cl_resends) ?
1396 atomic_read(&cli->cl_resends) > resend : 1;
1400 * Return device name for this device
1402 * XXX: lu_device is declared before obd_device, while a pointer pointing
1403 * back to obd_device in lu_device, so this helper function defines here
1404 * instead of in lu_object.h
1406 static inline const char *lu_dev_name(const struct lu_device *lu_dev)
1408 return lu_dev->ld_obd->obd_name;
1411 static inline bool filename_is_volatile(const char *name, int namelen, int *idx)
1416 if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0)
1419 /* caller does not care of idx */
1423 /* volatile file, the MDT can be set from name */
1424 /* name format is LUSTRE_VOLATILE_HDR:[idx]: */
1425 /* if no MDT is specified, use std way */
1426 if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2)
1428 /* test for no MDT idx case */
1429 if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') &&
1430 (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) {
1434 /* we have an idx, read it */
1435 start = name + LUSTRE_VOLATILE_HDR_LEN + 1;
1436 *idx = strtoul(start, &end, 16);
1438 * no digit, no trailing :, negative value
1440 if (((*idx == 0) && (end == start)) ||
1441 (*end != ':') || (*idx < 0))
1446 /* bad format of mdt idx, we cannot return an error
1447 * to caller so we use hash algo */
1448 CERROR("Bad volatile file name format: %s\n",
1449 name + LUSTRE_VOLATILE_HDR_LEN);
1453 static inline int cli_brw_size(struct obd_device *obd)
1455 LASSERT(obd != NULL);
1456 return obd->u.cli.cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
1459 #endif /* __OBD_H */