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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/mdt/mdt_internal.h
33 * Lustre Metadata Target (mdt) request handler
35 * Author: Peter Braam <braam@clusterfs.com>
36 * Author: Andreas Dilger <adilger@clusterfs.com>
37 * Author: Phil Schwan <phil@clusterfs.com>
38 * Author: Mike Shaver <shaver@clusterfs.com>
39 * Author: Nikita Danilov <nikita@clusterfs.com>
40 * Author: Huang Hua <huanghua@clusterfs.com>
43 #ifndef _MDT_INTERNAL_H
44 #define _MDT_INTERNAL_H
46 #include <libcfs/libcfs.h>
47 #include <libcfs/libcfs_hash.h>
48 #include <upcall_cache.h>
49 #include <obd_class.h>
50 #include <lustre_disk.h>
51 #include <lu_target.h>
52 #include <md_object.h>
53 #include <lustre_fid.h>
54 #include <lustre_fld.h>
55 #include <lustre_req_layout.h>
56 #include <lustre_sec.h>
57 #include <lustre_idmap.h>
58 #include <lustre_quota.h>
59 #include <lustre_linkea.h>
60 #include <lustre_lmv.h>
64 /* file data for open files on MDS */
65 struct mdt_file_data {
66 /** portals handle must be first */
67 struct portals_handle mfd_open_handle;
68 /* export data of portals_handle */
69 const struct mdt_export_data *mfd_owner;
70 /** open mode provided by client */
72 /** protected by med_open_lock */
73 struct list_head mfd_list;
74 /** xid of the open request */
76 /** old handle in replay case */
77 struct lustre_handle mfd_open_handle_old;
78 /** point to opened object */
79 struct mdt_object *mfd_object;
82 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
83 #define CDT_NORETRY_ACTION (1ULL << 1)
84 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
85 #define CDT_POLICY_SHIFT_COUNT 2
86 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
89 /* when adding a new policy, do not forget to update
90 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
92 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
94 /* Coordinator states. Keep the cdt_transition table in sync. */
95 enum cdt_states { CDT_STOPPED = 0,
104 static inline char *cdt_mdt_state2str(int state)
122 /* when multiple lock are needed, the lock order is
130 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
131 bool cdt_event; /**< coordinator event */
132 struct task_struct *cdt_task; /**< cdt thread handle */
133 struct lu_env cdt_env; /**< coordinator lustre
135 struct lu_context cdt_session; /** session for lu_ucred */
136 struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
137 struct completion cdt_kobj_unregister;
138 struct kobject cdt_hsm_kobj; /* hsm sysfs object */
139 __u64 cdt_policy; /**< policy flags */
140 enum cdt_states cdt_state; /**< state */
141 struct mutex cdt_state_lock; /**< cdt_state lock */
142 __u64 cdt_last_cookie; /**< last cookie
144 struct rw_semaphore cdt_llog_lock; /**< protect llog
146 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
147 struct rw_semaphore cdt_request_lock; /**< protect request
149 struct mutex cdt_restore_lock; /**< protect restore
151 timeout_t cdt_loop_period; /**< llog scan period */
152 timeout_t cdt_grace_delay; /**< request grace
154 timeout_t cdt_active_req_timeout; /**< request timeout */
155 __u32 cdt_default_archive_id; /**< archive id used
158 u64 cdt_max_requests; /**< max count of started
160 /** Current count of active requests */
161 atomic_t cdt_request_count; /** total */
162 atomic_t cdt_archive_count;
163 atomic_t cdt_restore_count;
164 atomic_t cdt_remove_count;
166 /* started requests (struct cdt_agent_req:car_cookie_hash)
167 * indexed by cookie */
168 struct cfs_hash *cdt_request_cookie_hash;
169 /* started requests (struct cdt_agent_req:car_request_list) */
170 struct list_head cdt_request_list;
171 struct list_head cdt_agents; /**< list of register
173 struct list_head cdt_restore_handle_list;
175 /* Hash of cookies to locations of record locations in agent
177 struct cfs_hash *cdt_agent_record_hash;
179 /* Bitmasks indexed by the HSMA_XXX constants. */
180 __u64 cdt_user_request_mask;
181 __u64 cdt_group_request_mask;
182 __u64 cdt_other_request_mask;
184 /* Remove archive on last unlink policy */
185 bool cdt_remove_archive_on_last_unlink;
187 bool cdt_wakeup_coordinator;
190 /* mdt state flag bits */
191 #define MDT_FL_CFGLOG 0
192 #define MDT_FL_SYNCED 1
194 /* possible values for mo_dom_lock */
196 NO_DOM_LOCK_ON_OPEN = 0,
197 TRYLOCK_DOM_ON_OPEN = 1,
198 /* not used anymore, left here for compatibility */
199 ALWAYS_DOM_LOCK_ON_OPEN = 2,
200 NUM_DOM_LOCK_ON_OPEN_MODES
203 struct mdt_statfs_cache {
204 struct obd_statfs msf_osfs;
208 /* split directory automatically when sub file count exceeds 50k */
209 #define DIR_SPLIT_COUNT_DEFAULT 50000
211 /* directory auto-split allocate delta new stripes each time */
212 #define DIR_SPLIT_DELTA_DEFAULT 4
214 struct mdt_dir_restriper {
215 struct lu_env mdr_env;
216 struct lu_context mdr_session;
217 struct task_struct *mdr_task;
218 /* lock for below fields */
220 /* auto split when plain dir/shard sub files exceed threshold */
221 u64 mdr_dir_split_count;
222 /* auto split growth delta */
223 u32 mdr_dir_split_delta;
224 /* directories to split */
225 struct list_head mdr_auto_splitting;
226 /* directories under which sub files are migrating */
227 struct list_head mdr_migrating;
228 /* directories waiting to update layout after migration */
229 struct list_head mdr_updating;
230 /* time to update directory layout after migration */
231 time64_t mdr_update_time;
232 /* lum used in split/migrate/layout_change */
233 union lmv_mds_md mdr_lmv;
234 /* page used in readdir */
235 struct page *mdr_page;
240 struct lu_device mdt_lu_dev;
241 struct seq_server_site mdt_seq_site;
242 /* DLM name-space for meta-data locks maintained by this server */
243 struct ldlm_namespace *mdt_namespace;
244 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
245 struct ptlrpc_client *mdt_ldlm_client;
246 /* underlying device */
247 struct obd_export *mdt_child_exp;
248 struct md_device *mdt_child;
249 struct dt_device *mdt_bottom;
250 struct obd_export *mdt_bottom_exp;
251 struct local_oid_storage *mdt_los;
253 struct lu_target mdt_lut;
255 * Options bit-fields.
258 unsigned int mo_user_xattr:1,
263 mo_migrate_hsm_allowed:1;
264 unsigned int mo_dom_lock;
266 /* mdt state flags */
267 unsigned long mdt_state;
269 /* transaction callbacks */
270 struct dt_txn_callback mdt_txn_cb;
272 /* these values should be updated from lov if necessary.
273 * or should be placed somewhere else. */
278 /* preferred BRW size, decided by storage type and capability */
281 struct upcall_cache *mdt_identity_cache;
283 unsigned int mdt_capa_conf:1,
284 /* Enable remote dir on non-MDT0 */
285 mdt_enable_remote_dir:1,
286 mdt_enable_striped_dir:1,
287 mdt_enable_dir_migration:1,
288 mdt_enable_dir_restripe:1,
289 mdt_enable_dir_auto_split:1,
290 mdt_enable_remote_rename:1,
293 /* dir restripe migrate dirent only */
294 mdt_dir_restripe_nsonly:1,
295 /* subdirectory mount of remote dir */
296 mdt_enable_remote_subdir_mount:1;
298 /* user with gid can create remote/striped
299 * dir, and set default dir stripe */
300 gid_t mdt_enable_remote_dir_gid;
301 /* user with this gid can change projid */
302 gid_t mdt_enable_chprojid_gid;
304 /* lock for osfs and md_root */
307 /* statfs optimization: we cache a bit */
308 struct mdt_statfs_cache mdt_sum_osfs;
309 struct mdt_statfs_cache mdt_osfs;
312 struct root_squash_info mdt_squash;
314 struct rename_stats mdt_rename_stats;
315 struct lu_fid mdt_md_root_fid;
317 /* connection to quota master */
318 struct obd_export *mdt_qmt_exp;
319 /* quota master device associated with this MDT */
320 struct lu_device *mdt_qmt_dev;
322 struct coordinator mdt_coordinator;
324 /* inter-MDT connection count */
325 atomic_t mdt_mds_mds_conns;
327 /* MDT device async commit count, used for debug and sanity test */
328 atomic_t mdt_async_commit_count;
330 struct mdt_object *mdt_md_root;
332 struct mdt_dir_restriper mdt_restriper;
335 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
336 #define MDT_COS_DEFAULT (0)
338 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
341 struct lu_object_header mot_header;
342 struct lu_object mot_obj;
343 unsigned int mot_lov_created:1, /* lov object created */
344 mot_cache_attr:1, /* enable remote object
346 mot_restriping:1, /* dir restriping */
347 /* dir auto-split disabled */
348 mot_auto_split_disabled:1;
350 spinlock_t mot_write_lock;
351 /* Lock to protect create_data */
352 struct mutex mot_lov_mutex;
353 /* Lock to protect object's SOM update. */
354 struct mutex mot_som_mutex;
355 /* lock to protect read/write stages for Data-on-MDT files */
356 struct rw_semaphore mot_dom_sem;
357 /* Lock to protect lease open.
358 * Lease open acquires write lock; normal open acquires read lock */
359 struct rw_semaphore mot_open_sem;
360 atomic_t mot_lease_count;
361 atomic_t mot_open_count;
362 /* directory offset, used in sub file migration in dir restripe */
363 loff_t mot_restripe_offset;
364 /* link to mdt_restriper auto_splitting/migrating/updating */
365 struct list_head mot_restripe_linkage;
368 struct mdt_lock_handle {
369 /* Lock type, reg for cross-ref use or pdo lock. */
373 struct lustre_handle mlh_reg_lh;
374 enum ldlm_mode mlh_reg_mode;
378 struct lustre_handle mlh_pdo_lh;
379 enum ldlm_mode mlh_pdo_mode;
380 unsigned int mlh_pdo_hash;
382 /* Remote regular lock */
383 struct lustre_handle mlh_rreg_lh;
384 enum ldlm_mode mlh_rreg_mode;
388 MDT_LH_PARENT, /* parent lockh */
389 MDT_LH_CHILD, /* child lockh */
390 MDT_LH_OLD, /* old lockh for rename */
391 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
392 MDT_LH_NEW, /* new lockh for rename */
393 MDT_LH_RMT, /* used for return lh to caller */
394 MDT_LH_LOCAL, /* local lock never return to client */
403 /* Special magical errno for communicaiton between mdt_reint_open()
404 * and mdt_intent_reint() which means return the lock to the client
405 * for subsequent cross ref open. Previously we used plain -EREMOTE
406 * but other functions called in that path might return it too and
407 * confuse us. This is not returned to the client. See LU-5370. */
408 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
410 struct mdt_reint_record {
411 enum mds_reint_op rr_opcode;
412 const struct lustre_handle *rr_open_handle;
413 const struct lustre_handle *rr_lease_handle;
414 const struct lu_fid *rr_fid1;
415 const struct lu_fid *rr_fid2;
416 struct lu_name rr_name;
417 struct lu_name rr_tgt_name;
424 enum mdt_reint_flag {
425 MRF_OPEN_TRUNC = BIT(0),
429 * Common data shared by mdt-level handlers. This is allocated per-thread to
430 * reduce stack consumption.
432 struct mdt_thread_info {
435 * The following members will be filled explicitly
436 * with specific data in mdt_thread_info_init().
438 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
439 * request handling may migrate from one server thread to another.
441 struct req_capsule *mti_pill;
443 /* although we have export in req, there are cases when it is not
444 * available, e.g. closing files upon export destroy */
445 struct obd_export *mti_exp;
447 * A couple of lock handles.
449 struct mdt_lock_handle mti_lh[MDT_LH_NR];
451 struct mdt_device *mti_mdt;
452 const struct lu_env *mti_env;
454 /* transaction number of current request */
459 * The following members will be filled expilictly
460 * with zero in mdt_thread_info_init(). These members may be used
467 struct md_attr mti_attr;
468 struct md_attr mti_attr2; /* mdt_lvb.c */
470 * Body for "habeo corpus" operations.
472 const struct mdt_body *mti_body;
474 * Host object. This is released at the end of mdt_handler().
476 struct mdt_object *mti_object;
478 * Lock request for "habeo clavis" operations.
480 const struct ldlm_request *mti_dlm_req;
482 __u32 mti_has_trans:1, /* has txn already? */
484 /* big_lmm buffer was used and must be used in reply */
489 /* opdata for mdt_reint_open(), has the same as
490 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
491 * value onto disk for recovery when mdt_trans_stop_cb() is called.
497 * The following members will be filled explicitly
498 * with zero in mdt_reint_unpack(), because they are only used
499 * by reint requests (including mdt_reint_open()).
503 * reint record. contains information for reint operations.
505 struct mdt_reint_record mti_rr;
507 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
509 * Operation specification (currently create and lookup)
511 struct md_op_spec mti_spec;
515 * The following members will _NOT_ be initialized at all.
516 * DO NOT expect them to contain any valid value.
517 * They should be initialized explicitly by the user themselves.
520 /* XXX: If something is in a union, make sure they do not conflict */
521 struct lu_fid mti_tmp_fid1;
522 struct lu_fid mti_tmp_fid2;
523 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
524 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
526 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
527 char ns_name[48];/* for mdt_init0() */
528 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
529 struct obd_statfs osfs; /* for mdt_statfs() */
531 /* for mdt_readpage() */
532 struct lu_rdpg mti_rdpg;
542 struct lustre_handle mti_open_handle;
544 struct lu_buf mti_buf;
545 struct lu_buf mti_big_buf;
547 /* Ops object filename */
548 struct lu_name mti_name;
549 char mti_filename[NAME_MAX + 1];
550 /* per-thread values, can be re-used, may be vmalloc'd */
555 /* should be enough to fit lustre_mdt_attrs */
556 char mti_xattr_buf[128];
557 struct ldlm_enqueue_info mti_einfo[2];
558 /* einfo used by mdt_remote_object_lock_try() */
559 struct ldlm_enqueue_info mti_remote_einfo;
560 struct tg_reply_data *mti_reply_data;
562 /* FLR: layout change API */
563 struct md_layout_change mti_mlc;
565 struct lu_seq_range mti_range;
568 extern struct lu_context_key mdt_thread_key;
570 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
572 return lu_env_info(env, &mdt_thread_key);
575 struct cdt_req_progress {
576 spinlock_t crp_lock; /**< protect tree */
577 struct interval_tree_root crp_root; /**< tree to track extent
582 struct cdt_agent_req {
583 struct hlist_node car_cookie_hash; /**< find req by cookie */
584 struct list_head car_request_list; /**< to chain all the req. */
585 atomic_t car_refcount; /**< reference counter */
586 __u64 car_flags; /**< request original flags */
587 struct obd_uuid car_uuid; /**< agent doing the req. */
588 __u32 car_archive_id; /**< archive id */
589 int car_canceled; /**< request was canceled */
590 time64_t car_req_start; /**< start time */
591 time64_t car_req_update; /**< last update time */
592 struct hsm_action_item *car_hai; /**< req. to the agent */
593 struct cdt_req_progress car_progress; /**< track data mvt
596 extern struct kmem_cache *mdt_hsm_car_kmem;
599 struct list_head ha_list; /**< to chain the agents */
600 struct obd_uuid ha_uuid; /**< agent uuid */
601 __u32 *ha_archive_id; /**< archive id */
602 int ha_archive_cnt; /**< number of archive entries
603 * 0 means any archive */
604 atomic_t ha_requests; /**< current request count */
605 atomic_t ha_success; /**< number of successful
607 atomic_t ha_failure; /**< number of failed actions */
610 struct cdt_restore_handle {
611 struct list_head crh_list; /**< to chain the handle */
612 struct lu_fid crh_fid; /**< fid of the object */
613 struct ldlm_extent crh_extent; /**< extent of the restore */
614 struct mdt_lock_handle crh_lh; /**< lock handle */
616 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
618 struct hsm_record_update {
620 enum agent_req_status status;
623 static inline const struct md_device_operations *
624 mdt_child_ops(struct mdt_device * m)
626 LASSERT(m->mdt_child);
627 return m->mdt_child->md_ops;
630 static inline struct md_object *mdt_object_child(struct mdt_object *o)
633 return lu2md(lu_object_next(&o->mot_obj));
636 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
638 return info->mti_pill ? info->mti_pill->rc_req : NULL;
641 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
643 LASSERT(info->mti_exp);
644 return exp_connect_flags(info->mti_exp);
647 static inline void mdt_object_get(const struct lu_env *env,
648 struct mdt_object *o)
651 lu_object_get(&o->mot_obj);
655 static inline void mdt_object_put(const struct lu_env *env,
656 struct mdt_object *o)
659 lu_object_put(env, &o->mot_obj);
663 static inline int mdt_object_exists(const struct mdt_object *o)
665 return lu_object_exists(&o->mot_obj);
668 static inline int mdt_object_remote(const struct mdt_object *o)
670 return lu_object_remote(&o->mot_obj);
673 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
675 return lu_object_fid(&o->mot_obj);
678 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
680 return mdt->mdt_lu_dev.ld_site;
683 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
685 return &mdt->mdt_seq_site;
688 static inline void mdt_export_evict(struct obd_export *exp)
690 class_fail_export(exp);
693 /* Here we use LVB_TYPE to check dne client, because it is
694 * also landed on 2.4. */
695 static inline bool mdt_is_dne_client(struct obd_export *exp)
697 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
700 static inline bool mdt_is_striped_client(struct obd_export *exp)
702 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
705 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
707 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
711 mdt_lmm_dom_entry_check(lmm, &dom_only);
715 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
717 return mdt_lmm_dom_entry_check(lmm, NULL);
720 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
722 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
724 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
725 le16_to_cpu(lcm->lcm_mirror_count) > 0;
728 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
730 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
731 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
732 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
737 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
739 struct lov_comp_md_v1 *comp_v1;
740 struct lov_mds_md *v1;
744 comp_v1 = (struct lov_comp_md_v1 *)lmm;
746 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
747 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
748 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
750 if (lmm_is_overstriping(v1))
757 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
759 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
760 return mdt_lmm_comp_overstriping(lmm);
762 return lmm_is_overstriping(lmm);
765 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
767 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
768 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
771 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
772 void mdt_set_disposition(struct mdt_thread_info *info,
773 struct ldlm_reply *rep, __u64 op_flag);
774 void mdt_clear_disposition(struct mdt_thread_info *info,
775 struct ldlm_reply *rep, __u64 op_flag);
777 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
778 const struct lu_name *lname);
780 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
781 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
783 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
784 struct mdt_lock_handle *lh);
786 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
787 struct mdt_lock_handle *lhc);
789 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
790 struct mdt_lock_handle *lh, __u64 ibits);
792 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
793 struct mdt_lock_handle *lh, __u64 ibits,
796 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
797 struct mdt_lock_handle *lh, __u64 *ibits,
798 __u64 trybits, bool cos_incompat);
800 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
801 struct mdt_lock_handle *lh, int decref);
802 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
803 enum ldlm_mode mode, int decref);
805 struct mdt_object *mdt_object_new(const struct lu_env *env,
807 const struct lu_fid *);
808 struct mdt_object *mdt_object_find(const struct lu_env *,
810 const struct lu_fid *);
811 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
812 const struct lu_fid *,
813 struct mdt_lock_handle *,
815 void mdt_object_unlock_put(struct mdt_thread_info *,
817 struct mdt_lock_handle *,
820 void mdt_client_compatibility(struct mdt_thread_info *info);
822 int mdt_remote_object_lock(struct mdt_thread_info *mti,
823 struct mdt_object *o, const struct lu_fid *fid,
824 struct lustre_handle *lh,
825 enum ldlm_mode mode, __u64 ibits, bool cache);
826 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
827 struct mdt_lock_handle *lh, __u64 *ibits,
828 __u64 trybits, bool cos_incompat);
829 int mdt_reint_striped_lock(struct mdt_thread_info *info,
830 struct mdt_object *o,
831 struct mdt_lock_handle *lh,
833 struct ldlm_enqueue_info *einfo,
835 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
836 struct mdt_object *o,
837 struct mdt_lock_handle *lh,
838 struct ldlm_enqueue_info *einfo, int decref);
840 enum mdt_name_flags {
844 int mdt_name_unpack(struct req_capsule *pill,
845 const struct req_msg_field *field,
847 enum mdt_name_flags flags);
848 int mdt_close_unpack(struct mdt_thread_info *info);
849 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
850 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
851 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
852 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
853 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
854 struct mdt_object *o, struct lu_nodemap *nodemap);
856 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
857 const struct lu_attr *attr, const struct lu_fid *fid);
858 int mdt_pack_size2body(struct mdt_thread_info *info,
859 const struct lu_fid *fid, struct lustre_handle *lh);
860 int mdt_getxattr(struct mdt_thread_info *info);
861 int mdt_reint_setxattr(struct mdt_thread_info *info,
862 struct mdt_lock_handle *lh);
864 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
865 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
867 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
868 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
869 struct mdt_lock_handle *lhc);
871 extern void target_recovery_fini(struct obd_device *obd);
872 extern void target_recovery_init(struct lu_target *lut,
873 svc_handler_t handler);
874 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
875 struct obd_device *, struct lustre_sb_info *lsi);
876 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
878 int mdt_export_stats_init(struct obd_device *obd,
879 struct obd_export *exp,
882 int mdt_lock_new_child(struct mdt_thread_info *info,
883 struct mdt_object *o,
884 struct mdt_lock_handle *child_lockh);
885 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
886 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
887 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
888 const struct lustre_handle *open_handle,
890 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
891 struct mdt_object *pobj,
892 struct mdt_object *obj);
894 int mdt_get_info(struct tgt_session_info *tsi);
895 int mdt_attr_get_complex(struct mdt_thread_info *info,
896 struct mdt_object *o, struct md_attr *ma);
897 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
899 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
900 struct md_attr *ma, const char *name);
901 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
902 struct md_attr *ma, const char *name);
903 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
904 struct lu_fid *pfid);
905 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
906 struct lu_fid *pfid, struct lu_name *lname);
907 int mdt_write_get(struct mdt_object *o);
908 void mdt_write_put(struct mdt_object *o);
909 int mdt_write_read(struct mdt_object *o);
910 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
911 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
912 void mdt_mfd_free(struct mdt_file_data *mfd);
913 int mdt_close(struct tgt_session_info *tsi);
914 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
916 int mdt_fix_reply(struct mdt_thread_info *info);
917 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
919 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
920 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
921 struct mdt_lock_handle *lhc,
922 struct md_layout_change *spec);
923 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
924 struct mdt_object *parent, struct mdt_object *child,
926 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
928 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
929 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
930 const void *area, ssize_t len);
932 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
933 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
935 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
936 int mdt_check_ucred(struct mdt_thread_info *);
937 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
938 int mdt_init_ucred_reint(struct mdt_thread_info *);
939 void mdt_exit_ucred(struct mdt_thread_info *);
940 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
941 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
942 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
944 int mdt_lookup_version_check(struct mdt_thread_info *info,
945 struct mdt_object *p,
946 const struct lu_name *lname,
947 struct lu_fid *fid, int idx);
948 void mdt_thread_info_init(struct ptlrpc_request *req,
949 struct mdt_thread_info *mti);
950 void mdt_thread_info_fini(struct mdt_thread_info *mti);
951 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
952 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
953 struct ldlm_lock *new_lock,
954 struct mdt_lock_handle *lh, __u64 flags);
955 int mdt_intent_lock_replace(struct mdt_thread_info *info,
956 struct ldlm_lock **lockp,
957 struct mdt_lock_handle *lh,
958 __u64 flags, int result);
960 int hsm_init_ucred(struct lu_ucred *uc);
961 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
962 const struct md_hsm *mh);
964 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
965 void *data, int flag);
966 int mdt_links_read(struct mdt_thread_info *info,
967 struct mdt_object *mdt_obj,
968 struct linkea_data *ldata);
969 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
970 struct mdt_body *repbody);
971 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
972 struct mdt_object *child);
973 int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
974 struct mdt_object *child);
976 static inline struct mdt_device *mdt_dev(struct lu_device *d)
978 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
981 static inline struct mdt_object *mdt_obj(struct lu_object *o)
983 return container_of_safe(o, struct mdt_object, mot_obj);
986 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
988 struct lu_object *lo;
989 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
991 lo = lu_object_locate(mo->mot_obj.lo_header,
992 mdt->mdt_bottom->dd_lu_dev.ld_type);
997 static inline bool agent_req_in_final_state(enum agent_req_status ars)
999 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
1000 (ars == ARS_CANCELED));
1003 /* mdt/mdt_identity.c */
1004 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1006 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1008 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1010 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1012 void mdt_flush_identity(struct upcall_cache *, int);
1014 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
1016 /* mdt/mdt_recovery.c */
1017 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1020 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1021 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1022 int mdt_hsm_action(struct tgt_session_info *tsi);
1023 int mdt_hsm_progress(struct tgt_session_info *tsi);
1024 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1025 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1026 int mdt_hsm_request(struct tgt_session_info *tsi);
1028 /* mdt/mdt_hsm_cdt_actions.c */
1029 extern const struct file_operations mdt_hsm_actions_fops;
1030 void dump_llog_agent_req_rec(const char *prefix,
1031 const struct llog_agent_req_rec *larr);
1032 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1033 llog_cb_t cb, void *data, u32 start_cat_idx,
1034 u32 start_rec_idx, int rw);
1035 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1036 __u32 archive_id, __u64 flags,
1037 struct hsm_action_item *hai);
1038 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
1039 struct hsm_record_update *updates,
1040 unsigned int updates_count);
1041 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1043 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1044 u32 *cat_idt, u32 *rec_idx);
1045 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1047 /* mdt/mdt_hsm_cdt_agent.c */
1048 extern const struct file_operations mdt_hsm_agent_fops;
1049 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1050 const struct obd_uuid *uuid,
1051 int nr_archives, __u32 *archive_num);
1052 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1053 const struct obd_uuid *uuid,
1054 __u32 archive_mask);
1055 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1056 const struct obd_uuid *uuid);
1057 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1058 int succ_rq, int fail_rq, int new_rq,
1059 const struct obd_uuid *uuid);
1060 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1061 struct obd_uuid *uuid);
1062 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1064 /* mdt/mdt_hsm_cdt_client.c */
1065 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1066 struct hsm_action_list *hal);
1067 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1068 const struct lu_fid *fid,
1069 enum hsm_copytool_action *action,
1070 enum agent_req_status *status,
1071 struct hsm_extent *extent);
1072 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1073 const struct lu_fid *fid);
1074 /* mdt/mdt_hsm_cdt_requests.c */
1075 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1076 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1077 extern const struct file_operations mdt_hsm_active_requests_fops;
1078 void dump_requests(char *prefix, struct coordinator *cdt);
1079 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1080 struct obd_uuid *uuid,
1081 struct hsm_action_item *hai);
1082 void mdt_cdt_free_request(struct cdt_agent_req *car);
1083 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1084 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1085 void mdt_cdt_get_request(struct cdt_agent_req *car);
1086 void mdt_cdt_put_request(struct cdt_agent_req *car);
1087 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1088 const struct hsm_progress_kernel *pgs);
1089 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1090 /* mdt/mdt_coordinator.c */
1091 void mdt_hsm_dump_hal(int level, const char *prefix,
1092 struct hsm_action_list *hal);
1093 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1094 const struct lu_fid *fid,
1095 const struct hsm_extent *he);
1096 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1097 const struct lu_fid *fid);
1098 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1099 struct coordinator *cdt, const struct lu_fid *fid);
1100 /* coordinator management */
1101 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1102 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1103 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1106 * Signal the coordinator has work to do
1107 * \param cdt [IN] coordinator
1109 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1111 cdt->cdt_event = true;
1114 /* coordinator control sysfs interface */
1115 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1117 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1118 const char *buffer, size_t count);
1119 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1120 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1121 /* md_hsm helpers */
1122 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1123 const struct lu_fid *fid,
1124 struct md_hsm *hsm);
1125 /* actions/request helpers */
1126 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1127 struct hsm_action_list *hal, struct obd_uuid *uuid);
1128 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1129 u32 archive_id, u64 rq_flags,
1130 const struct md_hsm *hsm);
1131 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1132 struct hsm_progress_kernel *pgs);
1134 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1135 struct mdt_object *o, struct md_attr *ma);
1137 extern struct lu_context_key mdt_thread_key;
1139 /* debug issues helper starts here*/
1140 static inline int mdt_fail_write(const struct lu_env *env,
1141 struct dt_device *dd, int id)
1143 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1144 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1146 return dt_ro(env, dd);
1147 /* We set FAIL_ONCE because we never "un-fail" a device */
1153 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1155 return &req->rq_export->exp_mdt_data;
1158 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1160 return mdt_dev(exp->exp_obd->obd_lu_dev);
1163 static inline bool mdt_rdonly(struct obd_export *exp)
1165 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1166 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1167 mdt_exp2dev(exp)->mdt_readonly);
1170 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1171 struct mdt_lock_handle *lhc);
1172 static inline int mdt_check_resent(struct mdt_thread_info *info,
1173 mdt_reconstruct_t reconstruct,
1174 struct mdt_lock_handle *lhc)
1176 struct ptlrpc_request *req = mdt_info_req(info);
1180 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1181 OBD_ALLOC_PTR(info->mti_reply_data);
1182 if (info->mti_reply_data == NULL)
1185 rc = req_can_reconstruct(req, info->mti_reply_data);
1187 reconstruct(info, lhc);
1189 DEBUG_REQ(D_HA, req,
1190 "no reply data found for RESENT req, rc = %d",
1193 OBD_FREE_PTR(info->mti_reply_data);
1194 info->mti_reply_data = NULL;
1199 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1200 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1202 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1204 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1207 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1209 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1211 return -ELDLM_NO_LOCK_DATA;
1214 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1215 static inline int mdt_fid_lock(const struct lu_env *env,
1216 struct ldlm_namespace *ns,
1217 struct lustre_handle *lh, enum ldlm_mode mode,
1218 union ldlm_policy_data *policy,
1219 const struct ldlm_res_id *res_id,
1220 __u64 flags, const __u64 *client_cookie)
1223 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1225 LASSERT(ns != NULL);
1226 LASSERT(lh != NULL);
1228 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1229 mode, &flags, mdt_blocking_ast,
1230 ldlm_completion_ast,
1231 glimpse ? mdt_dom_glimpse_ast : NULL,
1232 NULL, 0, LVB_T_NONE, client_cookie, lh);
1233 return rc == ELDLM_OK ? 0 : -EIO;
1236 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1238 ldlm_lock_decref(lh, mode);
1241 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1243 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1246 extern mdl_mode_t mdt_mdl_lock_modes[];
1247 extern enum ldlm_mode mdt_dlm_lock_modes[];
1249 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1251 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1253 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1254 return mdt_mdl_lock_modes[mode];
1257 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1259 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1260 return mdt_dlm_lock_modes[mode];
1264 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1265 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1266 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1267 struct md_attr *ma);
1268 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1269 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1273 extern struct ldlm_valblock_ops mdt_lvbo;
1274 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1275 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1276 struct ptlrpc_request *req, bool increase_only);
1278 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1279 int mdt_cos_is_enabled(struct mdt_device *);
1297 LPROC_MDT_SAMEDIR_RENAME,
1298 LPROC_MDT_CROSSDIR_RENAME,
1303 LPROC_MDT_FALLOCATE,
1307 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1308 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset);
1309 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1310 void mdt_tunables_fini(struct mdt_device *mdt);
1312 /* lustre/mdt_mdt_lproc.c */
1313 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1315 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1316 struct mdt_device *mdt,
1317 struct ptlrpc_request *req,
1318 struct mdt_object *src, struct mdt_object *tgt,
1321 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1323 return mdt->mdt_lu_dev.ld_obd;
1326 extern const struct lu_device_operations mdt_lu_ops;
1328 static inline char *mdt_obd_name(struct mdt_device *mdt)
1330 return mdt->mdt_lu_dev.ld_obd->obd_name;
1333 int mds_mod_init(void);
1334 void mds_mod_exit(void);
1336 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1338 struct obd_export *exp = req->rq_export;
1341 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1342 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1349 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1350 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1352 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1353 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1354 struct niobuf_remote *rnb, int *nr_local,
1355 struct niobuf_local *lnb);
1357 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1358 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1359 struct niobuf_remote *rnb, int npages,
1360 struct niobuf_local *lnb, int old_rc);
1361 int mdt_punch_hdl(struct tgt_session_info *tsi);
1362 int mdt_fallocate_hdl(struct tgt_session_info *tsi);
1363 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1364 struct ldlm_lock **lockp, __u64 flags);
1365 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1366 struct ldlm_lock **lockp, __u64 flags);
1367 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1368 struct lustre_handle *lh);
1369 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1370 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1371 struct ldlm_resource *res, bool increase_only);
1372 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1373 struct obdo *oa, bool increase_only);
1374 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1376 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1377 struct mdt_object *mo)
1379 return lu_object_is_dying(&mo->mot_header) &&
1380 S_ISREG(lu_object_attr(&mo->mot_obj));
1383 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1384 const struct lu_fid *fid, struct mdt_body *mb,
1386 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1387 const struct lu_fid *fid);
1388 void mdt_hp_brw(struct tgt_session_info *tsi);
1389 void mdt_hp_punch(struct tgt_session_info *tsi);
1390 int mdt_data_version_get(struct tgt_session_info *tsi);
1391 int mdt_io_set_info(struct tgt_session_info *tsi);
1394 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1395 u64 want, bool conservative);
1396 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1398 static inline bool mdt_is_rootadmin(struct mdt_thread_info *info)
1400 struct lu_ucred *uc = NULL;
1404 if (info == NULL || info->mti_body == NULL)
1405 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1406 /* return true in case old client did not send mdt body */
1412 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1416 uc = mdt_ucred(info);
1417 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1418 cap_raised(uc->uc_cap, CAP_SYS_ADMIN));
1420 mdt_exit_ucred(info);
1425 int mdt_reint_migrate(struct mdt_thread_info *info,
1426 struct mdt_lock_handle *unused);
1427 int mdt_dir_layout_update(struct mdt_thread_info *info);
1429 /* directory restripe */
1430 int mdt_restripe_internal(struct mdt_thread_info *info,
1431 struct mdt_object *parent,
1432 struct mdt_object *child,
1433 const struct lu_name *lname,
1434 struct lu_fid *tfid,
1435 struct md_op_spec *spec,
1436 struct md_attr *ma);
1437 int mdt_restriper_start(struct mdt_device *mdt);
1438 void mdt_restriper_stop(struct mdt_device *mdt);
1439 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1440 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1441 struct mdt_object *o);
1442 void mdt_restripe_update_add(struct mdt_thread_info *info,
1443 struct mdt_object *o);
1444 int mdt_is_remote_object(struct mdt_thread_info *info,
1445 struct mdt_object *parent,
1446 struct mdt_object *child);
1448 #endif /* _MDT_INTERNAL_H */