1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2011, 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
42 #if defined(__linux__)
43 #include <linux/obd.h>
44 #elif defined(__APPLE__)
45 #include <darwin/obd.h>
46 #elif defined(__WINNT__)
47 #include <winnt/obd.h>
49 #error Unsupported operating system.
52 #define IOC_OSC_TYPE 'h'
53 #define IOC_OSC_MIN_NR 20
54 #define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
55 #define IOC_OSC_MAX_NR 50
57 #define IOC_MDC_TYPE 'i'
58 #define IOC_MDC_MIN_NR 20
59 #define IOC_MDC_MAX_NR 50
61 #include <lustre/lustre_idl.h>
62 #include <lu_target.h>
64 #include <lustre_lib.h>
65 #include <lustre_export.h>
66 #include <lustre_quota.h>
67 #include <lustre_fld.h>
68 #include <lustre_capa.h>
70 #include <libcfs/bitmap.h>
73 #define MAX_OBD_DEVICES 8192
75 /* this is really local to the OSC */
76 struct loi_oap_pages {
77 cfs_list_t lop_pending;
78 cfs_list_t lop_urgent;
79 cfs_list_t lop_pending_group;
89 struct lov_oinfo { /* per-stripe data structure */
90 struct ost_id loi_oi; /* object ID/Sequence on the target OST */
91 int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */
92 int loi_ost_gen; /* generation of this loi_ost_idx */
94 /* used by the osc to keep track of what objects to build into rpcs */
95 struct loi_oap_pages loi_read_lop;
96 struct loi_oap_pages loi_write_lop;
97 cfs_list_t loi_ready_item;
98 cfs_list_t loi_hp_ready_item;
99 cfs_list_t loi_write_item;
100 cfs_list_t loi_read_item;
102 unsigned long loi_kms_valid:1;
103 __u64 loi_kms; /* known minimum size */
104 struct ost_lvb loi_lvb;
105 struct osc_async_rc loi_ar;
107 #define loi_id loi_oi.oi_id
108 #define loi_seq loi_oi.oi_seq
110 static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms)
112 oinfo->loi_kms = kms;
113 oinfo->loi_kms_valid = 1;
116 static inline void loi_init(struct lov_oinfo *loi)
118 CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending);
119 CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_urgent);
120 CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending_group);
121 CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending);
122 CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_urgent);
123 CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending_group);
124 CFS_INIT_LIST_HEAD(&loi->loi_ready_item);
125 CFS_INIT_LIST_HEAD(&loi->loi_hp_ready_item);
126 CFS_INIT_LIST_HEAD(&loi->loi_write_item);
127 CFS_INIT_LIST_HEAD(&loi->loi_read_item);
130 struct lov_stripe_md {
131 cfs_spinlock_t lsm_lock;
132 pid_t lsm_lock_owner; /* debugging */
134 /* maximum possible file size, might change as OSTs status changes,
135 * e.g. disconnected, deactivated */
138 /* Public members. */
139 __u64 lw_object_id; /* lov object id */
140 __u64 lw_object_seq; /* lov object seq */
142 /* LOV-private members start here -- only for use in lov/. */
144 __u32 lw_stripe_size; /* size of the stripe */
145 __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */
146 __u16 lw_stripe_count; /* number of objects being striped over */
147 __u16 lw_layout_gen; /* generation of the layout */
148 char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */
151 struct lov_oinfo *lsm_oinfo[0];
154 #define lsm_object_id lsm_wire.lw_object_id
155 #define lsm_object_seq lsm_wire.lw_object_seq
156 #define lsm_magic lsm_wire.lw_magic
157 #define lsm_layout_gen lsm_wire.lw_layout_gen
158 #define lsm_stripe_size lsm_wire.lw_stripe_size
159 #define lsm_pattern lsm_wire.lw_pattern
160 #define lsm_stripe_count lsm_wire.lw_stripe_count
161 #define lsm_pool_name lsm_wire.lw_pool_name
165 typedef int (*obd_enqueue_update_f)(void *cookie, int rc);
167 /* obd info for a particular level (lov, osc). */
169 /* Lock policy. It keeps an extent which is specific for a particular
170 * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy,
171 * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */
172 ldlm_policy_data_t oi_policy;
173 /* Flags used for set request specific flags:
174 - while lock handling, the flags obtained on the enqueue
175 request are set here.
176 - while stats, the flags used for control delay/resend.
177 - while setattr, the flags used for distinguish punch operation
180 /* Lock handle specific for every OSC lock. */
181 struct lustre_handle *oi_lockh;
182 /* lsm data specific for every OSC. */
183 struct lov_stripe_md *oi_md;
184 /* obdo data specific for every OSC, if needed at all. */
186 /* statfs data specific for every OSC, if needed at all. */
187 struct obd_statfs *oi_osfs;
188 /* An update callback which is called to update some data on upper
189 * level. E.g. it is used for update lsm->lsm_oinfo at every recieved
190 * request in osc level for enqueue requests. It is also possible to
191 * update some caller data from LOV layer if needed. */
192 obd_enqueue_update_f oi_cb_up;
193 /* oss capability, its type is obd_capa in client to avoid copy.
194 * in contrary its type is lustre_capa in OSS. */
198 /* compare all relevant fields. */
199 static inline int lov_stripe_md_cmp(struct lov_stripe_md *m1,
200 struct lov_stripe_md *m2)
203 * ->lsm_wire contains padding, but it should be zeroed out during
206 return memcmp(&m1->lsm_wire, &m2->lsm_wire, sizeof m1->lsm_wire);
209 static inline int lov_lum_lsm_cmp(struct lov_user_md *lum,
210 struct lov_stripe_md *lsm)
212 if (lsm->lsm_magic != lum->lmm_magic)
214 if ((lsm->lsm_stripe_count != 0) && (lum->lmm_stripe_count != 0) &&
215 (lsm->lsm_stripe_count != lum->lmm_stripe_count))
217 if ((lsm->lsm_stripe_size != 0) && (lum->lmm_stripe_size != 0) &&
218 (lsm->lsm_stripe_size != lum->lmm_stripe_size))
220 if ((lsm->lsm_pattern != 0) && (lum->lmm_pattern != 0) &&
221 (lsm->lsm_pattern != lum->lmm_pattern))
223 if ((lsm->lsm_magic == LOV_MAGIC_V3) &&
224 (strncmp(lsm->lsm_pool_name,
225 ((struct lov_user_md_v3 *)lum)->lmm_pool_name,
226 LOV_MAXPOOLNAME) != 0))
231 static inline int lov_lum_swab_if_needed(struct lov_user_md_v3 *lumv3,
233 struct lov_user_md *lum)
235 if (lum && cfs_copy_from_user(lumv3, lum,sizeof(struct lov_user_md_v1)))
238 *lmm_magic = lumv3->lmm_magic;
240 if (*lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
241 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lumv3);
242 *lmm_magic = LOV_USER_MAGIC_V1;
243 } else if (*lmm_magic == LOV_USER_MAGIC_V3) {
244 if (lum && cfs_copy_from_user(lumv3, lum, sizeof(*lumv3)))
246 } else if (*lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
247 if (lum && cfs_copy_from_user(lumv3, lum, sizeof(*lumv3)))
249 lustre_swab_lov_user_md_v3(lumv3);
250 *lmm_magic = LOV_USER_MAGIC_V3;
251 } else if (*lmm_magic != LOV_USER_MAGIC_V1) {
253 "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
254 *lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3);
260 void lov_stripe_lock(struct lov_stripe_md *md);
261 void lov_stripe_unlock(struct lov_stripe_md *md);
264 cfs_list_t typ_chain;
265 struct obd_ops *typ_dt_ops;
266 struct md_ops *typ_md_ops;
267 cfs_proc_dir_entry_t *typ_procroot;
270 struct lu_device_type *typ_lu;
271 cfs_spinlock_t obd_type_lock;
281 /* Individual type definitions */
283 struct ost_server_data;
285 struct osd_properties {
286 size_t osd_max_ea_size;
289 #define OBT_MAGIC 0xBDDECEAE
290 /* hold common fields for "target" device */
291 struct obd_device_target {
294 struct super_block *obt_sb;
295 /** last_rcvd file */
296 struct file *obt_rcvd_filp;
297 struct lu_target *obt_lut;
298 __u64 obt_mount_count;
299 cfs_semaphore_t obt_quotachecking;
300 struct lustre_quota_ctxt obt_qctxt;
301 lustre_quota_version_t obt_qfmt;
302 cfs_rw_semaphore_t obt_rwsem;
303 struct vfsmount *obt_vfsmnt;
304 struct file *obt_health_check_filp;
305 struct osd_properties obt_osd_properties;
310 LLOG_CONFIG_ORIG_CTXT = 0,
311 LLOG_CONFIG_REPL_CTXT,
312 LLOG_MDS_OST_ORIG_CTXT,
313 LLOG_MDS_OST_REPL_CTXT,
320 LLOG_LOVEA_ORIG_CTXT,
321 LLOG_LOVEA_REPL_CTXT,
322 LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */
323 LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */
324 LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */
328 #define FILTER_SUBDIR_COUNT 32 /* set to zero for no subdirs */
330 struct filter_subdirs {
331 cfs_dentry_t *dentry[FILTER_SUBDIR_COUNT];
341 /* NB this field MUST be first */
342 struct obd_device_target fo_obt;
343 const char *fo_fstype;
346 cfs_dentry_t *fo_dentry_O;
347 cfs_dentry_t **fo_dentry_O_groups;
348 struct filter_subdirs *fo_dentry_O_sub;
349 cfs_semaphore_t fo_init_lock; /* group initialization lock */
350 int fo_committed_group;
352 cfs_spinlock_t fo_objidlock; /* protect fo_lastobjid */
354 unsigned long fo_destroys_in_progress;
355 cfs_semaphore_t fo_create_locks[FILTER_SUBDIR_COUNT];
357 cfs_list_t fo_export_list;
360 obd_size fo_tot_dirty; /* protected by obd_osfs_lock */
361 obd_size fo_tot_granted; /* all values in bytes */
362 obd_size fo_tot_pending;
363 int fo_tot_granted_clients;
365 obd_size fo_readcache_max_filesize;
366 cfs_spinlock_t fo_flags_lock;
367 unsigned int fo_read_cache:1, /**< enable read-only cache */
368 fo_writethrough_cache:1,/**< read cache writes */
369 fo_mds_ost_sync:1, /**< MDS-OST orphan recovery*/
370 fo_raid_degraded:1;/**< RAID device degraded */
372 struct obd_import *fo_mdc_imp;
373 struct obd_uuid fo_mdc_uuid;
374 struct lustre_handle fo_mdc_conn;
375 struct file **fo_last_objid_files;
376 __u64 *fo_last_objids; /* last created objid for groups,
377 * protected by fo_objidlock */
379 cfs_semaphore_t fo_alloc_lock;
381 cfs_atomic_t fo_r_in_flight;
382 cfs_atomic_t fo_w_in_flight;
385 * per-filter pool of kiobuf's allocated by filter_common_setup() and
386 * torn down by filter_cleanup(). Contains OST_NUM_THREADS elements of
387 * which ->fo_iobuf_count were allocated.
389 * This pool contains kiobuf used by
390 * filter_{prep,commit}rw_{read,write}() and is shared by all OST
393 * Locking: none, each OST thread uses only one element, determined by
394 * its "ordinal number", ->t_id.
396 struct filter_iobuf **fo_iobuf_pool;
399 cfs_list_t fo_llog_list;
400 cfs_spinlock_t fo_llog_list_lock;
402 struct brw_stats fo_filter_stats;
403 struct lustre_quota_ctxt fo_quota_ctxt;
404 cfs_spinlock_t fo_quotacheck_lock;
405 cfs_atomic_t fo_quotachecking;
407 int fo_fmd_max_num; /* per exp filter_mod_data */
408 int fo_fmd_max_age; /* jiffies to fmd expiry */
409 unsigned long fo_syncjournal:1, /* sync journal on writes */
410 fo_sync_lock_cancel:2;/* sync on lock cancel */
414 cfs_rwlock_t fo_sptlrpc_lock;
415 struct sptlrpc_rule_set fo_sptlrpc_rset;
417 /* capability related */
418 unsigned int fo_fl_oss_capa;
419 cfs_list_t fo_capa_keys;
420 cfs_hlist_head_t *fo_capa_hash;
421 struct llog_commit_master *fo_lcm;
425 struct timeout_item {
426 enum timeout_event ti_event;
427 cfs_time_t ti_timeout;
430 cfs_list_t ti_obd_list;
434 #define OSC_MAX_RIF_DEFAULT 8
435 #define OSC_MAX_RIF_MAX 256
436 #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
437 #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
438 #define OSC_DEFAULT_RESENDS 10
440 /* possible values for fo_sync_lock_cancel */
442 NEVER_SYNC_ON_CANCEL = 0,
443 BLOCKING_SYNC_ON_CANCEL = 1,
444 ALWAYS_SYNC_ON_CANCEL = 2,
445 NUM_SYNC_ON_CANCEL_STATES
448 #define MDC_MAX_RIF_DEFAULT 8
449 #define MDC_MAX_RIF_MAX 512
454 cfs_rw_semaphore_t cl_sem;
455 struct obd_uuid cl_target_uuid;
456 struct obd_import *cl_import; /* ptlrpc connection state */
458 /* max_mds_easize is purely a performance thing so we don't have to
459 * call obd_size_diskmd() all the time. */
460 int cl_default_mds_easize;
461 int cl_max_mds_easize;
462 int cl_max_mds_cookiesize;
464 enum lustre_sec_part cl_sp_me;
465 enum lustre_sec_part cl_sp_to;
466 struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
468 //struct llog_canceld_ctxt *cl_llcd; /* it's included by obd_llog_ctxt */
469 void *cl_llcd_offset;
471 /* the grant values are protected by loi_list_lock below */
472 long cl_dirty; /* all _dirty_ in bytes */
473 long cl_dirty_max; /* allowed w/o rpc */
474 long cl_dirty_transit; /* dirty synchronous */
475 long cl_avail_grant; /* bytes of credit for ost */
476 long cl_lost_grant; /* lost credits (trunc) */
477 cfs_list_t cl_cache_waiters; /* waiting for cache/grant */
478 cfs_time_t cl_next_shrink_grant; /* jiffies */
479 cfs_list_t cl_grant_shrink_list; /* Timeout event list */
480 cfs_semaphore_t cl_grant_sem; /*grant shrink list cfs_semaphore*/
481 int cl_grant_shrink_interval; /* seconds */
483 /* keep track of objects that have lois that contain pages which
484 * have been queued for async brw. this lock also protects the
485 * lists of osc_client_pages that hang off of the loi */
487 * ->cl_loi_list_lock protects consistency of
488 * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
489 * ->ap_completion() call-backs are executed under this lock. As we
490 * cannot guarantee that these call-backs never block on all platforms
491 * (as a matter of fact they do block on Mac OS X), type of
492 * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
493 * and blocking mutex on Mac OS X. (Alternative is to make this lock
494 * blocking everywhere, but we don't want to slow down fast-path of
495 * our main platform.)
497 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
498 * with client_obd_list_{un,}lock() and
499 * client_obd_list_lock_{init,done}() functions.
501 client_obd_lock_t cl_loi_list_lock;
502 cfs_list_t cl_loi_ready_list;
503 cfs_list_t cl_loi_hp_ready_list;
504 cfs_list_t cl_loi_write_list;
505 cfs_list_t cl_loi_read_list;
508 /* just a sum of the loi/lop pending numbers to be exported by /proc */
509 int cl_pending_w_pages;
510 int cl_pending_r_pages;
511 int cl_max_pages_per_rpc;
512 int cl_max_rpcs_in_flight;
513 struct obd_histogram cl_read_rpc_hist;
514 struct obd_histogram cl_write_rpc_hist;
515 struct obd_histogram cl_read_page_hist;
516 struct obd_histogram cl_write_page_hist;
517 struct obd_histogram cl_read_offset_hist;
518 struct obd_histogram cl_write_offset_hist;
520 /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
521 cfs_atomic_t cl_destroy_in_flight;
522 cfs_waitq_t cl_destroy_waitq;
524 struct mdc_rpc_lock *cl_rpc_lock;
525 struct mdc_rpc_lock *cl_close_lock;
526 struct osc_creator cl_oscc;
529 cfs_semaphore_t cl_mgc_sem;
530 struct vfsmount *cl_mgc_vfsmnt;
531 struct dentry *cl_mgc_configs_dir;
532 cfs_atomic_t cl_mgc_refcount;
533 struct obd_export *cl_mgc_mgsexp;
535 /* checksumming for data sent over the network */
536 unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */
537 /* supported checksum types that are worked out at connect time */
538 __u32 cl_supp_cksum_types;
539 /* checksum algorithm to be used */
540 cksum_type_t cl_cksum_type;
542 /* also protected by the poorly named _loi_list_lock lock above */
543 struct osc_async_rc cl_ar;
545 /* used by quotacheck */
546 int cl_qchk_stat; /* quotacheck stat of the peer */
548 /* sequence manager */
549 struct lu_client_seq *cl_seq;
551 cfs_atomic_t cl_resends; /* resend count */
553 /* ptlrpc work for writeback in ptlrpcd context */
554 void *cl_writeback_work;
556 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
558 #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
561 struct obd_device_target mgs_obt;
562 struct ptlrpc_service *mgs_service;
563 struct vfsmount *mgs_vfsmnt;
564 struct super_block *mgs_sb;
565 struct dentry *mgs_configs_dir;
566 cfs_list_t mgs_fs_db_list;
567 cfs_semaphore_t mgs_sem;
568 cfs_proc_dir_entry_t *mgs_proc_live;
569 cfs_time_t mgs_start_time;
573 /* NB this field MUST be first */
574 struct obd_device_target mds_obt;
575 struct ptlrpc_service *mds_service;
576 struct ptlrpc_service *mds_setattr_service;
577 struct ptlrpc_service *mds_readpage_service;
579 int mds_max_cookiesize;
581 unsigned long mds_atime_diff;
582 cfs_semaphore_t mds_epoch_sem;
583 struct ll_fid mds_rootfid;
584 cfs_dentry_t *mds_pending_dir;
585 cfs_dentry_t *mds_logs_dir;
586 cfs_dentry_t *mds_objects_dir;
587 struct llog_handle *mds_cfg_llh;
588 struct obd_device *mds_lov_obd;
589 struct obd_uuid mds_lov_uuid;
591 struct obd_export *mds_lov_exp;
592 struct lov_desc mds_lov_desc;
595 /* mark pages dirty for write. */
596 cfs_bitmap_t *mds_lov_page_dirty;
597 /* array for store pages with obd_id */
598 void **mds_lov_page_array;
599 /* file for store objid */
600 struct file *mds_lov_objid_filp;
601 __u32 mds_lov_objid_count;
602 __u32 mds_lov_objid_max_index;
603 __u32 mds_lov_objid_lastpage;
604 __u32 mds_lov_objid_lastidx;
607 struct lustre_quota_info mds_quota_info;
608 cfs_rw_semaphore_t mds_qonoff_sem;
609 cfs_semaphore_t mds_health_sem;
610 unsigned long mds_fl_user_xattr:1,
612 mds_evict_ost_nids:1,
616 mds_fl_target:1; /* mds have one or
619 struct upcall_cache *mds_identity_cache;
621 /* for capability keys update */
622 struct lustre_capa_key *mds_capa_keys;
623 cfs_rw_semaphore_t mds_notify_lock;
627 extern __u32 mds_max_ost_index;
629 #define MDS_LOV_ALLOC_SIZE (CFS_PAGE_SIZE)
631 #define OBJID_PER_PAGE() (MDS_LOV_ALLOC_SIZE / sizeof(obd_id))
633 #define MDS_LOV_OBJID_PAGES_COUNT (mds_max_ost_index/OBJID_PER_PAGE())
635 extern int mds_lov_init_objids(struct obd_device *obd);
636 extern void mds_lov_destroy_objids(struct obd_device *obd);
646 struct obd_device_target eo_obt;
648 cfs_spinlock_t eo_lock;
650 struct lustre_handle eo_nl_lock;
651 cfs_atomic_t eo_prep;
655 struct ptlrpc_service *ost_service;
656 struct ptlrpc_service *ost_create_service;
657 struct ptlrpc_service *ost_io_service;
658 cfs_semaphore_t ost_health_sem;
661 struct echo_client_obd {
662 struct obd_export *ec_exp; /* the local connection to osc/lov */
663 cfs_spinlock_t ec_lock;
664 cfs_list_t ec_objects;
671 struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */
672 cfs_list_t lqo_oss_list; /* link to lov_qos */
673 __u64 lqo_bavail; /* total bytes avail on OSS */
674 __u64 lqo_penalty; /* current penalty */
675 __u64 lqo_penalty_per_obj;/* penalty decrease every obj*/
676 time_t lqo_used; /* last used time, seconds */
677 __u32 lqo_ost_count; /* number of osts on this oss */
681 struct lov_qos_oss *ltq_oss; /* oss info */
682 __u64 ltq_penalty; /* current penalty */
683 __u64 ltq_penalty_per_obj; /* penalty decrease every obj*/
684 __u64 ltq_weight; /* net weighting */
685 time_t ltq_used; /* last used time, seconds */
686 unsigned int ltq_usable:1; /* usable for striping */
689 /* Generic subset of OSTs */
691 __u32 *op_array; /* array of index of
693 unsigned int op_count; /* number of OSTs in the array */
694 unsigned int op_size; /* allocated size of lp_array */
695 cfs_rw_semaphore_t op_rw_sem; /* to protect ost_pool use */
698 /* Round-robin allocator data */
700 __u32 lqr_start_idx; /* start index of new inode */
701 __u32 lqr_offset_idx; /* aliasing for start_idx */
702 int lqr_start_count; /* reseed counter */
703 struct ost_pool lqr_pool; /* round-robin optimized list */
704 unsigned long lqr_dirty:1; /* recalc round-robin list */
707 /* allow statfs data caching for 1 second */
708 #define OBD_STATFS_CACHE_SECONDS 1
710 struct lov_statfs_data {
711 struct obd_info lsd_oi;
712 struct obd_statfs lsd_statfs;
714 /* Stripe placement optimization */
716 cfs_list_t lq_oss_list; /* list of OSSs that targets use */
717 cfs_rw_semaphore_t lq_rw_sem;
718 __u32 lq_active_oss_count;
719 unsigned int lq_prio_free; /* priority for free space */
720 unsigned int lq_threshold_rr;/* priority for rr */
721 struct lov_qos_rr lq_rr; /* round robin qos data */
722 unsigned long lq_dirty:1, /* recalc qos data */
723 lq_same_space:1,/* the ost's all have approx.
724 the same space avail */
725 lq_reset:1, /* zero current penalties */
726 lq_statfs_in_progress:1; /* statfs op in
728 /* qos statfs data */
729 struct lov_statfs_data *lq_statfs_data;
730 cfs_waitq_t lq_statfs_waitq; /* waitqueue to notify statfs
731 * requests completion */
734 struct lov_tgt_desc {
736 struct obd_uuid ltd_uuid;
737 struct obd_device *ltd_obd;
738 struct obd_export *ltd_exp;
739 struct ltd_qos ltd_qos; /* qos info per target */
741 __u32 ltd_index; /* index in lov_obd->tgts */
742 unsigned long ltd_active:1,/* is this target up for requests */
743 ltd_activate:1,/* should target be activated */
744 ltd_reap:1; /* should this target be deleted */
748 #define pool_tgt_size(_p) _p->pool_obds.op_size
749 #define pool_tgt_count(_p) _p->pool_obds.op_count
750 #define pool_tgt_array(_p) _p->pool_obds.op_array
751 #define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem
752 #define pool_tgt(_p, _i) _p->pool_lov->lov_tgts[_p->pool_obds.op_array[_i]]
755 char pool_name[LOV_MAXPOOLNAME + 1]; /* name of pool */
756 struct ost_pool pool_obds; /* pool members */
757 cfs_atomic_t pool_refcount; /* pool ref. counter */
758 struct lov_qos_rr pool_rr; /* round robin qos */
759 cfs_hlist_node_t pool_hash; /* access by poolname */
760 cfs_list_t pool_list; /* serial access */
761 cfs_proc_dir_entry_t *pool_proc_entry; /* file in /proc */
762 struct lov_obd *pool_lov; /* lov obd to which this
767 struct lov_desc desc;
768 struct lov_tgt_desc **lov_tgts; /* sparse array */
769 struct ost_pool lov_packed; /* all OSTs in a packed
771 cfs_semaphore_t lov_lock;
772 struct obd_connect_data lov_ocd;
773 struct lov_qos lov_qos; /* qos info per lov */
774 cfs_atomic_t lov_refcount;
775 __u32 lov_tgt_count; /* how many OBD's */
776 __u32 lov_active_tgt_count; /* how many active */
777 __u32 lov_death_row;/* tgts scheduled to be deleted */
778 __u32 lov_tgt_size; /* size of tgts array */
781 cfs_hash_t *lov_pools_hash_body; /* used for key access */
782 cfs_list_t lov_pool_list; /* used for sequential access */
783 cfs_proc_dir_entry_t *lov_pool_proc_entry;
784 enum lustre_sec_part lov_sp_me;
787 struct lmv_tgt_desc {
788 struct obd_uuid ltd_uuid;
789 struct obd_export *ltd_exp;
790 int ltd_active; /* is this target up for requests */
792 cfs_semaphore_t ltd_fid_sem;
795 enum placement_policy {
796 PLACEMENT_CHAR_POLICY = 0,
797 PLACEMENT_NID_POLICY = 1,
798 PLACEMENT_INVAL_POLICY = 2,
802 typedef enum placement_policy placement_policy_t;
806 struct lu_client_fld lmv_fld;
807 cfs_spinlock_t lmv_lock;
808 placement_policy_t lmv_placement;
809 struct lmv_desc desc;
810 struct obd_uuid cluuid;
811 struct obd_export *exp;
818 cfs_semaphore_t init_sem;
820 struct lmv_tgt_desc *tgts;
823 struct obd_connect_data *datas;
826 struct obd_connect_data conn_data;
829 struct niobuf_local {
834 cfs_dentry_t *dentry;
839 #define LUSTRE_FLD_NAME "fld"
840 #define LUSTRE_SEQ_NAME "seq"
842 #define LUSTRE_CMM_NAME "cmm"
843 #define LUSTRE_MDD_NAME "mdd"
844 #define LUSTRE_OSD_NAME "osd-ldiskfs"
845 #define LUSTRE_VVP_NAME "vvp"
846 #define LUSTRE_LMV_NAME "lmv"
847 #define LUSTRE_CMM_MDC_NAME "cmm-mdc"
848 #define LUSTRE_SLP_NAME "slp"
850 /* obd device type names */
851 /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
852 #define LUSTRE_MDS_NAME "mds"
853 #define LUSTRE_MDT_NAME "mdt"
854 #define LUSTRE_MDC_NAME "mdc"
855 #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
856 #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
857 #define LUSTRE_OSC_NAME "osc"
858 #define LUSTRE_LOV_NAME "lov"
859 #define LUSTRE_MGS_NAME "mgs"
860 #define LUSTRE_MGC_NAME "mgc"
862 #define LUSTRE_CACHEOBD_NAME "cobd"
863 #define LUSTRE_ECHO_NAME "obdecho"
864 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
866 /* Constant obd names (post-rename) */
867 #define LUSTRE_MDS_OBDNAME "MDS"
868 #define LUSTRE_OSS_OBDNAME "OSS"
869 #define LUSTRE_MGS_OBDNAME "MGS"
870 #define LUSTRE_MGC_OBDNAME "MGC"
872 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
873 #define N_LOCAL_TEMP_PAGE 0x10000000
875 struct obd_trans_info {
878 /* Only used on the server side for tracking acks. */
879 struct oti_req_ack_lock {
880 struct lustre_handle lock;
884 struct llog_cookie oti_onecookie;
885 struct llog_cookie *oti_logcookies;
888 /* initial thread handling transaction */
889 struct ptlrpc_thread * oti_thread;
892 __u64 oti_pre_version;
894 struct obd_uuid *oti_ost_uuid;
897 static inline void oti_init(struct obd_trans_info *oti,
898 struct ptlrpc_request *req)
902 memset(oti, 0, sizeof(*oti));
907 oti->oti_xid = req->rq_xid;
908 /** VBR: take versions from request */
909 if (req->rq_reqmsg != NULL &&
910 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
911 __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
912 oti->oti_pre_version = pre_version ? pre_version[0] : 0;
913 oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg);
916 /** called from mds_create_objects */
917 if (req->rq_repmsg != NULL)
918 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
919 oti->oti_thread = req->rq_svc_thread;
920 if (req->rq_reqmsg != NULL)
921 oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
924 static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
929 if (num_cookies == 1)
930 oti->oti_logcookies = &oti->oti_onecookie;
932 OBD_ALLOC_LARGE(oti->oti_logcookies,
933 num_cookies * sizeof(oti->oti_onecookie));
935 oti->oti_numcookies = num_cookies;
938 static inline void oti_free_cookies(struct obd_trans_info *oti)
940 if (!oti || !oti->oti_logcookies)
943 if (oti->oti_logcookies == &oti->oti_onecookie)
944 LASSERT(oti->oti_numcookies == 1);
946 OBD_FREE_LARGE(oti->oti_logcookies,
947 oti->oti_numcookies*sizeof(oti->oti_onecookie));
948 oti->oti_logcookies = NULL;
949 oti->oti_numcookies = 0;
953 * Events signalled through obd_notify() upcall-chain.
955 enum obd_notify_event {
958 /* Device connect start */
960 /* Device activated */
962 /* Device deactivated */
964 /* Device disconnected */
966 /* Connect data for import were changed */
969 OBD_NOTIFY_SYNC_NONBLOCK,
971 /* Configuration event */
973 /* Trigger quota recovery */
975 /* Administratively deactivate/activate event */
976 OBD_NOTIFY_DEACTIVATE,
980 /* bit-mask flags for config events */
982 CONFIG_LOG = 0x1, /* finished processing config log */
983 CONFIG_SYNC = 0x2, /* mdt synced 1 ost */
984 CONFIG_TARGET = 0x4 /* one target is added */
988 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
989 * and liblustre being main examples).
991 struct obd_notify_upcall {
992 int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
993 enum obd_notify_event ev, void *owner, void *data);
994 /* Opaque datum supplied by upper layer listener */
998 struct target_recovery_data {
999 svc_handler_t trd_recovery_handler;
1000 pid_t trd_processing_task;
1001 cfs_completion_t trd_starting;
1002 cfs_completion_t trd_finishing;
1006 * In HEAD for CMD, the object is created in group number which is 3>=
1007 * or indexing starts from 3. To test this assertions are added to disallow
1008 * group 0. But to run 2.0 mds server on 1.8.x disk format (i.e. interop_mode)
1009 * object in group 0 needs to be allowed.
1010 * So for interop mode following changes needs to be done:
1011 * 1. No need to assert on group 0 or allow group 0
1012 * 2. The group number indexing starts from 0 instead of 3
1015 #define LASSERT_SEQ_IS_MDT(seq) LASSERT(fid_seq_is_mdt(seq))
1017 static inline __u64 objseq_to_mdsno(obd_seq seq)
1019 LASSERT_SEQ_IS_MDT(seq);
1020 if (seq == FID_SEQ_OST_MDT0)
1022 return seq - FID_SEQ_OST_MDT1 + 1;
1025 static inline int mdt_to_obd_objseq(int mdtid)
1028 * MDS0 uses seq 0 pre FID-on-OST, other MDSes will use seq from
1032 return FID_SEQ_OST_MDT1 + mdtid - 1;
1036 struct obd_llog_group {
1037 cfs_list_t olg_list;
1039 struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS];
1040 cfs_waitq_t olg_waitq;
1041 cfs_spinlock_t olg_lock;
1042 struct obd_export *olg_exp;
1043 int olg_initializing;
1044 cfs_semaphore_t olg_cat_processing;
1047 /* corresponds to one of the obd's */
1048 #define OBD_DEVICE_MAGIC 0XAB5CD6EF
1049 #define OBD_DEV_BY_DEVNAME 0xffffd0de
1052 struct obd_type *obd_type;
1055 /* common and UUID name of this device */
1056 char obd_name[MAX_OBD_NAME];
1057 struct obd_uuid obd_uuid;
1059 struct lu_device *obd_lu_dev;
1062 /* bitfield modification is protected by obd_dev_lock */
1063 unsigned long obd_attached:1, /* finished attach */
1064 obd_set_up:1, /* finished setup */
1065 obd_recovering:1, /* there are recoverable clients */
1066 obd_abort_recovery:1,/* recovery expired */
1067 obd_version_recov:1, /* obd uses version checking */
1068 obd_replayable:1, /* recovery is enabled; inform clients */
1069 obd_no_transno:1, /* no committed-transno notification */
1070 obd_no_recov:1, /* fail instead of retry messages */
1071 obd_stopping:1, /* started cleanup */
1072 obd_starting:1, /* started setup */
1073 obd_force:1, /* cleanup with > 0 obd refcount */
1074 obd_fail:1, /* cleanup with failover */
1075 obd_async_recov:1, /* allow asynchronous orphan cleanup */
1076 obd_no_conn:1, /* deny new connections */
1077 obd_inactive:1, /* device active/inactive
1078 * (for /proc/status only!!) */
1079 obd_no_ir:1, /* no imperative recovery. */
1080 obd_process_conf:1; /* device is processing mgs config */
1081 /* use separate field as it is set in interrupt to don't mess with
1082 * protection of other bits using _bh lock */
1083 unsigned long obd_recovery_expired:1;
1084 /* uuid-export hash body */
1085 cfs_hash_t *obd_uuid_hash;
1086 /* nid-export hash body */
1087 cfs_hash_t *obd_nid_hash;
1088 /* nid stats body */
1089 cfs_hash_t *obd_nid_stats_hash;
1090 cfs_list_t obd_nid_stats;
1091 cfs_atomic_t obd_refcount;
1092 cfs_waitq_t obd_refcount_waitq;
1093 cfs_list_t obd_exports;
1094 cfs_list_t obd_unlinked_exports;
1095 cfs_list_t obd_delayed_exports;
1096 int obd_num_exports;
1097 cfs_spinlock_t obd_nid_lock;
1098 struct ldlm_namespace *obd_namespace;
1099 struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
1100 /* a spinlock is OK for what we do now, may need a semaphore later */
1101 cfs_spinlock_t obd_dev_lock; /* protects obd bitfield above */
1102 cfs_semaphore_t obd_dev_sem;
1103 __u64 obd_last_committed;
1104 struct fsfilt_operations *obd_fsops;
1105 cfs_spinlock_t obd_osfs_lock;
1106 struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */
1108 struct lvfs_run_ctxt obd_lvfs_ctxt;
1109 struct obd_llog_group obd_olg; /* default llog group */
1110 struct obd_device *obd_observer;
1111 cfs_rw_semaphore_t obd_observer_link_sem;
1112 struct obd_notify_upcall obd_upcall;
1113 struct obd_export *obd_self_export;
1114 /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
1115 cfs_list_t obd_exports_timed;
1116 time_t obd_eviction_timer; /* for ping evictor */
1118 int obd_max_recoverable_clients;
1119 cfs_atomic_t obd_connected_clients;
1120 int obd_stale_clients;
1121 int obd_delayed_clients;
1122 /* this lock protects all recovery list_heads, timer and
1123 * obd_next_recovery_transno value */
1124 cfs_spinlock_t obd_recovery_task_lock;
1125 __u64 obd_next_recovery_transno;
1126 int obd_replayed_requests;
1127 int obd_requests_queued_for_recovery;
1128 cfs_waitq_t obd_next_transno_waitq;
1129 /* protected by obd_recovery_task_lock */
1130 cfs_timer_t obd_recovery_timer;
1131 time_t obd_recovery_start; /* seconds */
1132 time_t obd_recovery_end; /* seconds, for lprocfs_status */
1133 int obd_recovery_time_hard;
1134 int obd_recovery_timeout;
1135 int obd_recovery_ir_factor;
1137 /* new recovery stuff from CMD2 */
1138 struct target_recovery_data obd_recovery_data;
1139 int obd_replayed_locks;
1140 cfs_atomic_t obd_req_replay_clients;
1141 cfs_atomic_t obd_lock_replay_clients;
1142 /* all lists are protected by obd_recovery_task_lock */
1143 cfs_list_t obd_req_replay_queue;
1144 cfs_list_t obd_lock_replay_queue;
1145 cfs_list_t obd_final_req_queue;
1146 int obd_recovery_stage;
1149 struct obd_device_target obt;
1150 struct filter_obd filter;
1152 struct client_obd cli;
1154 struct echo_client_obd echo_client;
1155 struct echo_obd echo;
1160 /* Fields used by LProcFS */
1161 unsigned int obd_cntr_base;
1162 struct lprocfs_stats *obd_stats;
1164 unsigned int md_cntr_base;
1165 struct lprocfs_stats *md_stats;
1167 cfs_proc_dir_entry_t *obd_proc_entry;
1168 cfs_proc_dir_entry_t *obd_proc_exports_entry;
1169 cfs_proc_dir_entry_t *obd_svc_procroot;
1170 struct lprocfs_stats *obd_svc_stats;
1171 cfs_atomic_t obd_evict_inprogress;
1172 cfs_waitq_t obd_evict_inprogress_waitq;
1173 cfs_list_t obd_evict_list; /* protected with pet_lock */
1176 * Ldlm pool part. Save last calculated SLV and Limit.
1178 cfs_rwlock_t obd_pool_lock;
1183 * A list of outstanding class_incref()'s against this obd. For
1186 struct lu_ref obd_reference;
1189 #define OBD_LLOG_FL_SENDNOW 0x0001
1191 enum obd_cleanup_stage {
1192 /* Special case hack for MDS LOVs */
1194 /* can be directly mapped to .ldto_device_fini() */
1195 OBD_CLEANUP_EXPORTS,
1198 /* get/set_info keys */
1199 #define KEY_ASYNC "async"
1200 #define KEY_BLOCKSIZE_BITS "blocksize_bits"
1201 #define KEY_BLOCKSIZE "blocksize"
1202 #define KEY_CAPA_KEY "capa_key"
1203 #define KEY_CHANGELOG_CLEAR "changelog_clear"
1204 #define KEY_FID2PATH "fid2path"
1205 #define KEY_CHECKSUM "checksum"
1206 #define KEY_CLEAR_FS "clear_fs"
1207 #define KEY_CONN_DATA "conn_data"
1208 #define KEY_EVICT_BY_NID "evict_by_nid"
1209 #define KEY_FIEMAP "fiemap"
1210 #define KEY_FLUSH_CTX "flush_ctx"
1211 #define KEY_GRANT_SHRINK "grant_shrink"
1212 #define KEY_HSM_COPYTOOL_SEND "hsm_send"
1213 #define KEY_INIT_RECOV_BACKUP "init_recov_bk"
1214 #define KEY_INIT_RECOV "initial_recov"
1215 #define KEY_INTERMDS "inter_mds"
1216 #define KEY_LAST_ID "last_id"
1217 #define KEY_LOCK_TO_STRIPE "lock_to_stripe"
1218 #define KEY_LOVDESC "lovdesc"
1219 #define KEY_LOV_IDX "lov_idx"
1220 #define KEY_MAX_EASIZE "max_easize"
1221 #define KEY_MDS_CONN "mds_conn"
1222 #define KEY_MGSSEC "mgssec"
1223 #define KEY_NEXT_ID "next_id"
1224 #define KEY_READ_ONLY "read-only"
1225 #define KEY_REGISTER_TARGET "register_target"
1226 #define KEY_REVIMP_UPD "revimp_update"
1227 #define KEY_SET_FS "set_fs"
1228 #define KEY_TGT_COUNT "tgt_count"
1229 /* KEY_SET_INFO in lustre_idl.h */
1230 #define KEY_SPTLRPC_CONF "sptlrpc_conf"
1231 #define KEY_CONNECT_FLAG "connect_flags"
1232 #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
1236 /* /!\ must be coherent with include/linux/namei.h on patched kernel */
1237 #define IT_OPEN (1 << 0)
1238 #define IT_CREAT (1 << 1)
1239 #define IT_READDIR (1 << 2)
1240 #define IT_GETATTR (1 << 3)
1241 #define IT_LOOKUP (1 << 4)
1242 #define IT_UNLINK (1 << 5)
1243 #define IT_TRUNC (1 << 6)
1244 #define IT_GETXATTR (1 << 7)
1245 #define IT_EXEC (1 << 8)
1246 #define IT_PIN (1 << 9)
1247 #define IT_LAYOUT (1 << 10)
1249 static inline int it_to_lock_mode(struct lookup_intent *it)
1251 /* CREAT needs to be tested before open (both could be set) */
1252 if (it->it_op & IT_CREAT)
1254 else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP |
1258 LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
1263 struct lu_fid op_fid1; /* operation fid1 (usualy parent) */
1264 struct lu_fid op_fid2; /* operation fid2 (usualy child) */
1265 struct lu_fid op_fid3; /* 2 extra fids to find conflicting */
1266 struct lu_fid op_fid4; /* to the operation locks. */
1267 mdsno_t op_mds; /* what mds server open will go to */
1268 struct lustre_handle op_handle;
1269 obd_time op_mod_time;
1270 const char *op_name;
1273 struct lmv_stripe_md *op_mea1;
1274 struct lmv_stripe_md *op_mea2;
1275 __u32 op_suppgids[2];
1281 /* iattr fields and blocks. */
1282 struct iattr op_attr;
1284 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
1285 unsigned int op_attr_flags;
1289 loff_t op_attr_blocks;
1291 /* Size-on-MDS epoch and flags. */
1296 struct obd_capa *op_capa1;
1297 struct obd_capa *op_capa2;
1299 /* Various operation flags. */
1302 /* Operation type */
1305 /* Used by readdir */
1310 struct md_enqueue_info;
1311 /* metadata stat-ahead */
1312 typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req,
1313 struct md_enqueue_info *minfo,
1316 struct md_enqueue_info {
1317 struct md_op_data mi_data;
1318 struct lookup_intent mi_it;
1319 struct lustre_handle mi_lockh;
1320 struct inode *mi_dir;
1321 md_enqueue_cb_t mi_cb;
1323 unsigned int mi_generation;
1327 cfs_module_t *o_owner;
1328 int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
1329 void *karg, void *uarg);
1330 int (*o_get_info)(struct obd_export *, __u32 keylen, void *key,
1331 __u32 *vallen, void *val, struct lov_stripe_md *lsm);
1332 int (*o_set_info_async)(struct obd_export *, __u32 keylen, void *key,
1333 __u32 vallen, void *val,
1334 struct ptlrpc_request_set *set);
1335 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
1336 int (*o_detach)(struct obd_device *dev);
1337 int (*o_setup) (struct obd_device *dev, struct lustre_cfg *cfg);
1338 int (*o_precleanup)(struct obd_device *dev,
1339 enum obd_cleanup_stage cleanup_stage);
1340 int (*o_cleanup)(struct obd_device *dev);
1341 int (*o_process_config)(struct obd_device *dev, obd_count len,
1343 int (*o_postrecov)(struct obd_device *dev);
1344 int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid,
1346 int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid);
1347 /* connect to the target device with given connection
1348 * data. @ocd->ocd_connect_flags is modified to reflect flags actually
1349 * granted by the target, which are guaranteed to be a subset of flags
1350 * asked for. If @ocd == NULL, use default parameters. */
1351 int (*o_connect)(const struct lu_env *env,
1352 struct obd_export **exp, struct obd_device *src,
1353 struct obd_uuid *cluuid, struct obd_connect_data *ocd,
1355 int (*o_reconnect)(const struct lu_env *env,
1356 struct obd_export *exp, struct obd_device *src,
1357 struct obd_uuid *cluuid,
1358 struct obd_connect_data *ocd,
1360 int (*o_disconnect)(struct obd_export *exp);
1362 /* Initialize/finalize fids infrastructure. */
1363 int (*o_fid_init)(struct obd_export *exp);
1364 int (*o_fid_fini)(struct obd_export *exp);
1366 /* Allocate new fid according to passed @hint. */
1367 int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
1368 struct md_op_data *op_data);
1371 * Object with @fid is getting deleted, we may want to do something
1374 int (*o_fid_delete)(struct obd_export *exp, const struct lu_fid *fid);
1376 int (*o_statfs)(struct obd_device *obd, struct obd_statfs *osfs,
1377 __u64 max_age, __u32 flags);
1378 int (*o_statfs_async)(struct obd_device *obd, struct obd_info *oinfo,
1379 __u64 max_age, struct ptlrpc_request_set *set);
1380 int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
1381 struct lov_stripe_md *mem_src);
1382 int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
1383 struct lov_mds_md *disk_src, int disk_len);
1384 int (*o_preallocate)(struct lustre_handle *, obd_count *req,
1386 /* FIXME: add fid capability support for create & destroy! */
1387 int (*o_precreate)(struct obd_export *exp);
1388 int (*o_create)(struct obd_export *exp, struct obdo *oa,
1389 struct lov_stripe_md **ea, struct obd_trans_info *oti);
1390 int (*o_create_async)(struct obd_export *exp, struct obd_info *oinfo,
1391 struct lov_stripe_md **ea,
1392 struct obd_trans_info *oti);
1393 int (*o_destroy)(struct obd_export *exp, struct obdo *oa,
1394 struct lov_stripe_md *ea, struct obd_trans_info *oti,
1395 struct obd_export *md_exp, void *capa);
1396 int (*o_setattr)(struct obd_export *exp, struct obd_info *oinfo,
1397 struct obd_trans_info *oti);
1398 int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1399 struct obd_trans_info *oti,
1400 struct ptlrpc_request_set *rqset);
1401 int (*o_getattr)(struct obd_export *exp, struct obd_info *oinfo);
1402 int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo,
1403 struct ptlrpc_request_set *set);
1404 int (*o_brw)(int rw, struct obd_export *exp, struct obd_info *oinfo,
1405 obd_count oa_bufs, struct brw_page *pgarr,
1406 struct obd_trans_info *oti);
1407 int (*o_merge_lvb)(struct obd_export *exp, struct lov_stripe_md *lsm,
1408 struct ost_lvb *lvb, int kms_only);
1409 int (*o_adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm,
1410 obd_off size, int shrink);
1411 int (*o_punch)(struct obd_export *exp, struct obd_info *oinfo,
1412 struct obd_trans_info *oti,
1413 struct ptlrpc_request_set *rqset);
1414 int (*o_sync)(struct obd_export *exp, struct obd_info *oinfo,
1415 obd_size start, obd_size end,
1416 struct ptlrpc_request_set *set);
1417 int (*o_migrate)(struct lustre_handle *conn, struct lov_stripe_md *dst,
1418 struct lov_stripe_md *src, obd_size start,
1419 obd_size end, struct obd_trans_info *oti);
1420 int (*o_copy)(struct lustre_handle *dstconn, struct lov_stripe_md *dst,
1421 struct lustre_handle *srconn, struct lov_stripe_md *src,
1422 obd_size start, obd_size end, struct obd_trans_info *);
1423 int (*o_iterate)(struct lustre_handle *conn,
1424 int (*)(obd_id, obd_seq, void *),
1425 obd_id *startid, obd_seq seq, void *data);
1426 int (*o_preprw)(int cmd, struct obd_export *exp, struct obdo *oa,
1427 int objcount, struct obd_ioobj *obj,
1428 struct niobuf_remote *remote, int *nr_pages,
1429 struct niobuf_local *local,
1430 struct obd_trans_info *oti,
1431 struct lustre_capa *capa);
1432 int (*o_commitrw)(int cmd, struct obd_export *exp, struct obdo *oa,
1433 int objcount, struct obd_ioobj *obj,
1434 struct niobuf_remote *remote, int pages,
1435 struct niobuf_local *local,
1436 struct obd_trans_info *oti, int rc);
1437 int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo,
1438 struct ldlm_enqueue_info *einfo,
1439 struct ptlrpc_request_set *rqset);
1440 int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *,
1441 ldlm_iterator_t it, void *data);
1442 int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *,
1443 ldlm_iterator_t it, void *data);
1444 int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md,
1445 __u32 mode, struct lustre_handle *);
1446 int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *,
1447 ldlm_cancel_flags_t flags, void *opaque);
1448 int (*o_init_export)(struct obd_export *exp);
1449 int (*o_destroy_export)(struct obd_export *exp);
1450 int (*o_extent_calc)(struct obd_export *, struct lov_stripe_md *,
1451 int cmd, obd_off *);
1453 /* llog related obd_methods */
1454 int (*o_llog_init)(struct obd_device *obd, struct obd_llog_group *grp,
1455 struct obd_device *disk_obd, int *idx);
1456 int (*o_llog_finish)(struct obd_device *obd, int count);
1457 int (*o_llog_connect)(struct obd_export *, struct llogd_conn_body *);
1459 /* metadata-only methods */
1460 int (*o_pin)(struct obd_export *, const struct lu_fid *fid,
1461 struct obd_capa *, struct obd_client_handle *, int flag);
1462 int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
1464 int (*o_import_event)(struct obd_device *, struct obd_import *,
1465 enum obd_import_event);
1467 int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
1468 enum obd_notify_event ev, void *data);
1470 int (*o_health_check)(struct obd_device *);
1471 struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
1474 int (*o_quotacheck)(struct obd_device *, struct obd_export *,
1475 struct obd_quotactl *);
1476 int (*o_quotactl)(struct obd_device *, struct obd_export *,
1477 struct obd_quotactl *);
1478 int (*o_quota_adjust_qunit)(struct obd_export *exp,
1479 struct quota_adjust_qunit *oqaq,
1480 struct lustre_quota_ctxt *qctxt,
1481 struct ptlrpc_request_set *rqset);
1484 int (*o_ping)(struct obd_export *exp);
1487 int (*o_pool_new)(struct obd_device *obd, char *poolname);
1488 int (*o_pool_del)(struct obd_device *obd, char *poolname);
1489 int (*o_pool_add)(struct obd_device *obd, char *poolname,
1491 int (*o_pool_rem)(struct obd_device *obd, char *poolname,
1493 void (*o_getref)(struct obd_device *obd);
1494 void (*o_putref)(struct obd_device *obd);
1496 * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
1497 * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
1498 * Also, add a wrapper function in include/linux/obd_class.h. */
1502 LUSTRE_OPC_MKDIR = (1 << 0),
1503 LUSTRE_OPC_SYMLINK = (1 << 1),
1504 LUSTRE_OPC_MKNOD = (1 << 2),
1505 LUSTRE_OPC_CREATE = (1 << 3),
1506 LUSTRE_OPC_ANY = (1 << 4)
1509 /* lmv structures */
1510 #define MEA_MAGIC_LAST_CHAR 0xb2221ca1
1511 #define MEA_MAGIC_ALL_CHARS 0xb222a11c
1512 #define MEA_MAGIC_HASH_SEGMENT 0xb222a11b
1514 #define MAX_HASH_SIZE_32 0x7fffffffUL
1515 #define MAX_HASH_SIZE 0x7fffffffffffffffULL
1516 #define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL
1519 struct mdt_body *body;
1520 struct lov_stripe_md *lsm;
1521 struct lmv_stripe_md *mea;
1522 #ifdef CONFIG_FS_POSIX_ACL
1523 struct posix_acl *posix_acl;
1525 struct mdt_remote_perm *remote_perm;
1526 struct obd_capa *mds_capa;
1527 struct obd_capa *oss_capa;
1530 struct md_open_data {
1531 struct obd_client_handle *mod_och;
1532 struct ptlrpc_request *mod_open_req;
1533 struct ptlrpc_request *mod_close_req;
1534 cfs_atomic_t mod_refcount;
1537 struct lookup_intent;
1540 int (*m_getstatus)(struct obd_export *, struct lu_fid *,
1541 struct obd_capa **);
1542 int (*m_change_cbdata)(struct obd_export *, const struct lu_fid *,
1543 ldlm_iterator_t, void *);
1544 int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *,
1545 ldlm_iterator_t, void *);
1546 int (*m_close)(struct obd_export *, struct md_op_data *,
1547 struct md_open_data *, struct ptlrpc_request **);
1548 int (*m_create)(struct obd_export *, struct md_op_data *,
1549 const void *, int, int, __u32, __u32, cfs_cap_t,
1550 __u64, struct ptlrpc_request **);
1551 int (*m_done_writing)(struct obd_export *, struct md_op_data *,
1552 struct md_open_data *);
1553 int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
1554 struct lookup_intent *, struct md_op_data *,
1555 struct lustre_handle *, void *, int,
1556 struct ptlrpc_request **, int);
1557 int (*m_getattr)(struct obd_export *, struct md_op_data *,
1558 struct ptlrpc_request **);
1559 int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
1560 struct ptlrpc_request **);
1561 int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
1562 void *, int, struct lookup_intent *, int,
1563 struct ptlrpc_request **,
1564 ldlm_blocking_callback, int);
1565 int (*m_link)(struct obd_export *, struct md_op_data *,
1566 struct ptlrpc_request **);
1567 int (*m_rename)(struct obd_export *, struct md_op_data *,
1568 const char *, int, const char *, int,
1569 struct ptlrpc_request **);
1570 int (*m_is_subdir)(struct obd_export *, const struct lu_fid *,
1571 const struct lu_fid *,
1572 struct ptlrpc_request **);
1573 int (*m_setattr)(struct obd_export *, struct md_op_data *, void *,
1574 int , void *, int, struct ptlrpc_request **,
1575 struct md_open_data **mod);
1576 int (*m_sync)(struct obd_export *, const struct lu_fid *,
1577 struct obd_capa *, struct ptlrpc_request **);
1578 int (*m_readpage)(struct obd_export *, struct md_op_data *,
1579 struct page **, struct ptlrpc_request **);
1581 int (*m_unlink)(struct obd_export *, struct md_op_data *,
1582 struct ptlrpc_request **);
1584 int (*m_setxattr)(struct obd_export *, const struct lu_fid *,
1585 struct obd_capa *, obd_valid, const char *,
1586 const char *, int, int, int, __u32,
1587 struct ptlrpc_request **);
1589 int (*m_getxattr)(struct obd_export *, const struct lu_fid *,
1590 struct obd_capa *, obd_valid, const char *,
1591 const char *, int, int, int,
1592 struct ptlrpc_request **);
1594 int (*m_init_ea_size)(struct obd_export *, int, int, int);
1596 int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *,
1597 struct obd_export *, struct obd_export *,
1598 struct lustre_md *);
1600 int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *);
1602 int (*m_set_open_replay_data)(struct obd_export *,
1603 struct obd_client_handle *,
1604 struct ptlrpc_request *);
1605 int (*m_clear_open_replay_data)(struct obd_export *,
1606 struct obd_client_handle *);
1607 int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
1609 ldlm_mode_t (*m_lock_match)(struct obd_export *, int,
1610 const struct lu_fid *, ldlm_type_t,
1611 ldlm_policy_data_t *, ldlm_mode_t,
1612 struct lustre_handle *);
1614 int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *,
1615 ldlm_policy_data_t *, ldlm_mode_t,
1616 ldlm_cancel_flags_t flags, void *opaque);
1617 int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc,
1618 renew_capa_cb_t cb);
1619 int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *,
1620 const struct req_msg_field *, struct obd_capa **);
1622 int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *,
1623 struct obd_capa *, __u32,
1624 struct ptlrpc_request **);
1626 int (*m_intent_getattr_async)(struct obd_export *,
1627 struct md_enqueue_info *,
1628 struct ldlm_enqueue_info *);
1630 int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *,
1631 struct lu_fid *, __u64 *bits);
1634 * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to
1635 * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
1636 * wrapper function in include/linux/obd_class.h.
1640 struct lsm_operations {
1641 void (*lsm_free)(struct lov_stripe_md *);
1642 int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa,
1643 struct obd_export *md_exp);
1644 void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, obd_off *,
1646 void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *,
1648 int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes,
1649 __u16 *stripe_count);
1650 int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm,
1651 struct lov_mds_md *lmm);
1654 extern const struct lsm_operations lsm_v1_ops;
1655 extern const struct lsm_operations lsm_v3_ops;
1656 static inline const struct lsm_operations *lsm_op_find(int magic)
1664 CERROR("Cannot recognize lsm_magic %08x\n", magic);
1669 int lvfs_check_io_health(struct obd_device *obd, struct file *file);
1671 /* Requests for obd_extent_calc() */
1672 #define OBD_CALC_STRIPE_START 1
1673 #define OBD_CALC_STRIPE_END 2
1675 static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
1676 struct obd_export *exp, int error)
1679 CERROR("%s: transno "LPU64" commit error: %d\n",
1680 obd->obd_name, transno, error);
1683 if (exp && transno > exp->exp_last_committed) {
1684 CDEBUG(D_HA, "%s: transno "LPU64" committed\n",
1685 obd->obd_name, transno);
1686 exp->exp_last_committed = transno;
1687 ptlrpc_commit_replies(exp);
1689 CDEBUG(D_INFO, "%s: transno "LPU64" committed\n",
1690 obd->obd_name, transno);
1692 if (transno > obd->obd_last_committed)
1693 obd->obd_last_committed = transno;
1696 static inline void init_obd_quota_ops(quota_interface_t *interface,
1697 struct obd_ops *obd_ops)
1703 obd_ops->o_quotacheck = QUOTA_OP(interface, check);
1704 obd_ops->o_quotactl = QUOTA_OP(interface, ctl);
1705 obd_ops->o_quota_adjust_qunit = QUOTA_OP(interface, adjust_qunit);
1708 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
1710 return oinfo->oi_capa;
1713 static inline struct md_open_data *obd_mod_alloc(void)
1715 struct md_open_data *mod;
1719 cfs_atomic_set(&mod->mod_refcount, 1);
1723 #define obd_mod_get(mod) cfs_atomic_inc(&(mod)->mod_refcount)
1724 #define obd_mod_put(mod) \
1726 if (cfs_atomic_dec_and_test(&(mod)->mod_refcount)) { \
1727 if ((mod)->mod_open_req) \
1728 ptlrpc_req_finished((mod)->mod_open_req); \
1729 OBD_FREE_PTR(mod); \
1733 extern void obdo_from_inode(struct obdo *dst, struct inode *src,
1734 struct lu_fid *parent, obd_flag valid);
1736 /* return 1 if client should be resend request */
1737 static inline int client_should_resend(int resend, struct client_obd *cli)
1739 return cfs_atomic_read(&cli->cl_resends) ?
1740 cfs_atomic_read(&cli->cl_resends) > resend : 1;
1744 * Return device name for this device
1746 * XXX: lu_device is declared before obd_device, while a pointer pointing
1747 * back to obd_device in lu_device, so this helper function defines here
1748 * instead of in lu_object.h
1750 static inline const char *lu_dev_name(const struct lu_device *lu_dev)
1752 return lu_dev->ld_obd->obd_name;
1755 #endif /* __OBD_H */