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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_internal.h
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
44 #ifndef _MDT_INTERNAL_H
45 #define _MDT_INTERNAL_H
47 #include <libcfs/libcfs.h>
48 #include <libcfs/libcfs_hash.h>
49 #include <upcall_cache.h>
50 #include <obd_class.h>
51 #include <lustre_disk.h>
52 #include <lu_target.h>
53 #include <md_object.h>
54 #include <lustre_fid.h>
55 #include <lustre_fld.h>
56 #include <lustre_req_layout.h>
57 #include <lustre_sec.h>
58 #include <lustre_idmap.h>
59 #include <lustre_quota.h>
60 #include <lustre_linkea.h>
61 #include <lustre_lmv.h>
65 /* file data for open files on MDS */
66 struct mdt_file_data {
67 /** portals handle must be first */
68 struct portals_handle mfd_open_handle;
69 /* export data of portals_handle */
70 const struct mdt_export_data *mfd_owner;
71 /** open mode provided by client */
73 /** protected by med_open_lock */
74 struct list_head mfd_list;
75 /** xid of the open request */
77 /** old handle in replay case */
78 struct lustre_handle mfd_open_handle_old;
79 /** point to opened object */
80 struct mdt_object *mfd_object;
83 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
84 #define CDT_NORETRY_ACTION (1ULL << 1)
85 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
86 #define CDT_POLICY_SHIFT_COUNT 2
87 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
90 /* when adding a new policy, do not forget to update
91 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
93 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
95 /* Coordinator states. Keep the cdt_transition table in sync. */
96 enum cdt_states { CDT_STOPPED = 0,
105 static inline char *cdt_mdt_state2str(int state)
123 /* when multiple lock are needed, the lock order is
131 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
132 bool cdt_event; /**< coordinator event */
133 struct task_struct *cdt_task; /**< cdt thread handle */
134 struct lu_env cdt_env; /**< coordinator lustre
136 struct lu_context cdt_session; /** session for lu_ucred */
137 struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
138 struct completion cdt_kobj_unregister;
139 struct kobject cdt_hsm_kobj; /* hsm sysfs object */
140 __u64 cdt_policy; /**< policy flags */
141 enum cdt_states cdt_state; /**< state */
142 struct mutex cdt_state_lock; /**< cdt_state lock */
143 __u64 cdt_last_cookie; /**< last cookie
145 struct rw_semaphore cdt_llog_lock; /**< protect llog
147 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
148 struct rw_semaphore cdt_request_lock; /**< protect request
150 struct mutex cdt_restore_lock; /**< protect restore
152 timeout_t cdt_loop_period; /**< llog scan period */
153 timeout_t cdt_grace_delay; /**< request grace
155 timeout_t cdt_active_req_timeout; /**< request timeout */
156 __u32 cdt_default_archive_id; /**< archive id used
159 u64 cdt_max_requests; /**< max count of started
161 /** Current count of active requests */
162 atomic_t cdt_request_count; /** total */
163 atomic_t cdt_archive_count;
164 atomic_t cdt_restore_count;
165 atomic_t cdt_remove_count;
167 /* started requests (struct cdt_agent_req:car_cookie_hash)
168 * indexed by cookie */
169 struct cfs_hash *cdt_request_cookie_hash;
170 /* started requests (struct cdt_agent_req:car_request_list) */
171 struct list_head cdt_request_list;
172 struct list_head cdt_agents; /**< list of register
174 struct list_head cdt_restore_handle_list;
176 /* Hash of cookies to locations of record locations in agent
178 struct cfs_hash *cdt_agent_record_hash;
180 /* Bitmasks indexed by the HSMA_XXX constants. */
181 __u64 cdt_user_request_mask;
182 __u64 cdt_group_request_mask;
183 __u64 cdt_other_request_mask;
185 /* Remove archive on last unlink policy */
186 bool cdt_remove_archive_on_last_unlink;
188 bool cdt_wakeup_coordinator;
191 /* mdt state flag bits */
192 #define MDT_FL_CFGLOG 0
193 #define MDT_FL_SYNCED 1
195 /* possible values for mo_dom_lock */
197 NO_DOM_LOCK_ON_OPEN = 0,
198 TRYLOCK_DOM_ON_OPEN = 1,
199 /* not used anymore, left here for compatibility */
200 ALWAYS_DOM_LOCK_ON_OPEN = 2,
201 NUM_DOM_LOCK_ON_OPEN_MODES
204 struct mdt_statfs_cache {
205 struct obd_statfs msf_osfs;
209 /* split directory automatically when sub file count exceeds 50k */
210 #define DIR_SPLIT_COUNT_DEFAULT 50000
212 /* directory auto-split allocate delta new stripes each time */
213 #define DIR_SPLIT_DELTA_DEFAULT 4
215 struct mdt_dir_restriper {
216 struct lu_env mdr_env;
217 struct lu_context mdr_session;
218 struct task_struct *mdr_task;
219 /* lock for below fields */
221 /* auto split when plain dir/shard sub files exceed threshold */
222 u64 mdr_dir_split_count;
223 /* auto split growth delta */
224 u32 mdr_dir_split_delta;
225 /* directories to split */
226 struct list_head mdr_auto_splitting;
227 /* directories under which sub files are migrating */
228 struct list_head mdr_migrating;
229 /* directories waiting to update layout after migration */
230 struct list_head mdr_updating;
231 /* time to update directory layout after migration */
232 time64_t mdr_update_time;
233 /* lum used in split/migrate/layout_change */
234 union lmv_mds_md mdr_lmv;
235 /* page used in readdir */
236 struct page *mdr_page;
241 struct lu_device mdt_lu_dev;
242 struct seq_server_site mdt_seq_site;
243 /* DLM name-space for meta-data locks maintained by this server */
244 struct ldlm_namespace *mdt_namespace;
245 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
246 struct ptlrpc_client *mdt_ldlm_client;
247 /* underlying device */
248 struct obd_export *mdt_child_exp;
249 struct md_device *mdt_child;
250 struct dt_device *mdt_bottom;
251 struct obd_export *mdt_bottom_exp;
252 struct local_oid_storage *mdt_los;
254 struct lu_target mdt_lut;
256 * Options bit-fields.
259 unsigned int mo_user_xattr:1,
264 mo_migrate_hsm_allowed:1;
265 unsigned int mo_dom_lock;
267 /* mdt state flags */
268 unsigned long mdt_state;
270 /* transaction callbacks */
271 struct dt_txn_callback mdt_txn_cb;
273 /* these values should be updated from lov if necessary.
274 * or should be placed somewhere else. */
279 /* preferred BRW size, decided by storage type and capability */
282 struct upcall_cache *mdt_identity_cache;
284 unsigned int mdt_capa_conf:1,
285 /* Enable remote dir on non-MDT0 */
286 mdt_enable_remote_dir:1,
287 mdt_enable_striped_dir:1,
288 mdt_enable_dir_migration:1,
289 mdt_enable_dir_restripe:1,
290 mdt_enable_dir_auto_split:1,
291 mdt_enable_remote_rename:1,
294 /* dir restripe migrate dirent only */
295 mdt_dir_restripe_nsonly:1,
296 /* subdirectory mount of remote dir */
297 mdt_enable_remote_subdir_mount:1;
299 /* user with gid can create remote/striped
300 * dir, and set default dir stripe */
301 gid_t mdt_enable_remote_dir_gid;
302 /* user with this gid can change projid */
303 gid_t mdt_enable_chprojid_gid;
305 /* lock for osfs and md_root */
308 /* statfs optimization: we cache a bit */
309 struct mdt_statfs_cache mdt_sum_osfs;
310 struct mdt_statfs_cache mdt_osfs;
313 struct root_squash_info mdt_squash;
315 struct rename_stats mdt_rename_stats;
316 struct lu_fid mdt_md_root_fid;
318 /* connection to quota master */
319 struct obd_export *mdt_qmt_exp;
320 /* quota master device associated with this MDT */
321 struct lu_device *mdt_qmt_dev;
323 struct coordinator mdt_coordinator;
325 /* inter-MDT connection count */
326 atomic_t mdt_mds_mds_conns;
328 /* MDT device async commit count, used for debug and sanity test */
329 atomic_t mdt_async_commit_count;
331 struct mdt_object *mdt_md_root;
333 struct mdt_dir_restriper mdt_restriper;
336 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
337 #define MDT_COS_DEFAULT (0)
339 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
342 struct lu_object_header mot_header;
343 struct lu_object mot_obj;
344 unsigned int mot_lov_created:1, /* lov object created */
345 mot_cache_attr:1, /* enable remote object
347 mot_restriping:1, /* dir restriping */
348 /* dir auto-split disabled */
349 mot_auto_split_disabled:1;
351 spinlock_t mot_write_lock;
352 /* Lock to protect create_data */
353 struct mutex mot_lov_mutex;
354 /* Lock to protect object's SOM update. */
355 struct mutex mot_som_mutex;
356 /* lock to protect read/write stages for Data-on-MDT files */
357 struct rw_semaphore mot_dom_sem;
358 /* Lock to protect lease open.
359 * Lease open acquires write lock; normal open acquires read lock */
360 struct rw_semaphore mot_open_sem;
361 atomic_t mot_lease_count;
362 atomic_t mot_open_count;
363 /* directory offset, used in sub file migration in dir restripe */
364 loff_t mot_restripe_offset;
365 /* link to mdt_restriper auto_splitting/migrating/updating */
366 struct list_head mot_restripe_linkage;
369 struct mdt_lock_handle {
370 /* Lock type, reg for cross-ref use or pdo lock. */
374 struct lustre_handle mlh_reg_lh;
375 enum ldlm_mode mlh_reg_mode;
379 struct lustre_handle mlh_pdo_lh;
380 enum ldlm_mode mlh_pdo_mode;
381 unsigned int mlh_pdo_hash;
383 /* Remote regular lock */
384 struct lustre_handle mlh_rreg_lh;
385 enum ldlm_mode mlh_rreg_mode;
389 MDT_LH_PARENT, /* parent lockh */
390 MDT_LH_CHILD, /* child lockh */
391 MDT_LH_OLD, /* old lockh for rename */
392 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
393 MDT_LH_NEW, /* new lockh for rename */
394 MDT_LH_RMT, /* used for return lh to caller */
395 MDT_LH_LOCAL, /* local lock never return to client */
404 /* Special magical errno for communicaiton between mdt_reint_open()
405 * and mdt_intent_reint() which means return the lock to the client
406 * for subsequent cross ref open. Previously we used plain -EREMOTE
407 * but other functions called in that path might return it too and
408 * confuse us. This is not returned to the client. See LU-5370. */
409 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
411 struct mdt_reint_record {
412 enum mds_reint_op rr_opcode;
413 const struct lustre_handle *rr_open_handle;
414 const struct lustre_handle *rr_lease_handle;
415 const struct lu_fid *rr_fid1;
416 const struct lu_fid *rr_fid2;
417 struct lu_name rr_name;
418 struct lu_name rr_tgt_name;
425 enum mdt_reint_flag {
426 MRF_OPEN_TRUNC = BIT(0),
430 * Common data shared by mdt-level handlers. This is allocated per-thread to
431 * reduce stack consumption.
433 struct mdt_thread_info {
436 * The following members will be filled explicitly
437 * with specific data in mdt_thread_info_init().
439 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
440 * request handling may migrate from one server thread to another.
442 struct req_capsule *mti_pill;
444 /* although we have export in req, there are cases when it is not
445 * available, e.g. closing files upon export destroy */
446 struct obd_export *mti_exp;
448 * A couple of lock handles.
450 struct mdt_lock_handle mti_lh[MDT_LH_NR];
452 struct mdt_device *mti_mdt;
453 const struct lu_env *mti_env;
455 /* transaction number of current request */
460 * The following members will be filled expilictly
461 * with zero in mdt_thread_info_init(). These members may be used
468 struct md_attr mti_attr;
469 struct md_attr mti_attr2; /* mdt_lvb.c */
471 * Body for "habeo corpus" operations.
473 const struct mdt_body *mti_body;
475 * Host object. This is released at the end of mdt_handler().
477 struct mdt_object *mti_object;
479 * Lock request for "habeo clavis" operations.
481 const struct ldlm_request *mti_dlm_req;
483 __u32 mti_has_trans:1, /* has txn already? */
485 /* big_lmm buffer was used and must be used in reply */
490 /* opdata for mdt_reint_open(), has the same as
491 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
492 * value onto disk for recovery when mdt_trans_stop_cb() is called.
498 * The following members will be filled explicitly
499 * with zero in mdt_reint_unpack(), because they are only used
500 * by reint requests (including mdt_reint_open()).
504 * reint record. contains information for reint operations.
506 struct mdt_reint_record mti_rr;
508 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
510 * Operation specification (currently create and lookup)
512 struct md_op_spec mti_spec;
516 * The following members will _NOT_ be initialized at all.
517 * DO NOT expect them to contain any valid value.
518 * They should be initialized explicitly by the user themselves.
521 /* XXX: If something is in a union, make sure they do not conflict */
522 struct lu_fid mti_tmp_fid1;
523 struct lu_fid mti_tmp_fid2;
524 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
525 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
527 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
528 char ns_name[48];/* for mdt_init0() */
529 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
530 struct obd_statfs osfs; /* for mdt_statfs() */
532 /* for mdt_readpage() */
533 struct lu_rdpg mti_rdpg;
543 struct lustre_handle mti_open_handle;
545 struct lu_buf mti_buf;
546 struct lu_buf mti_big_buf;
548 /* Ops object filename */
549 struct lu_name mti_name;
550 char mti_filename[NAME_MAX + 1];
551 /* per-thread values, can be re-used, may be vmalloc'd */
556 /* should be enough to fit lustre_mdt_attrs */
557 char mti_xattr_buf[128];
558 struct ldlm_enqueue_info mti_einfo[2];
559 /* einfo used by mdt_remote_object_lock_try() */
560 struct ldlm_enqueue_info mti_remote_einfo;
561 struct tg_reply_data *mti_reply_data;
563 /* FLR: layout change API */
564 struct md_layout_change mti_mlc;
566 struct lu_seq_range mti_range;
569 extern struct lu_context_key mdt_thread_key;
571 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
573 return lu_env_info(env, &mdt_thread_key);
576 struct cdt_req_progress {
577 spinlock_t crp_lock; /**< protect tree */
578 struct interval_tree_root crp_root; /**< tree to track extent
583 struct cdt_agent_req {
584 struct hlist_node car_cookie_hash; /**< find req by cookie */
585 struct list_head car_request_list; /**< to chain all the req. */
586 atomic_t car_refcount; /**< reference counter */
587 __u64 car_flags; /**< request original flags */
588 struct obd_uuid car_uuid; /**< agent doing the req. */
589 __u32 car_archive_id; /**< archive id */
590 int car_canceled; /**< request was canceled */
591 time64_t car_req_start; /**< start time */
592 time64_t car_req_update; /**< last update time */
593 struct hsm_action_item *car_hai; /**< req. to the agent */
594 struct cdt_req_progress car_progress; /**< track data mvt
597 extern struct kmem_cache *mdt_hsm_car_kmem;
600 struct list_head ha_list; /**< to chain the agents */
601 struct obd_uuid ha_uuid; /**< agent uuid */
602 __u32 *ha_archive_id; /**< archive id */
603 int ha_archive_cnt; /**< number of archive entries
604 * 0 means any archive */
605 atomic_t ha_requests; /**< current request count */
606 atomic_t ha_success; /**< number of successful
608 atomic_t ha_failure; /**< number of failed actions */
611 struct cdt_restore_handle {
612 struct list_head crh_list; /**< to chain the handle */
613 struct lu_fid crh_fid; /**< fid of the object */
614 struct ldlm_extent crh_extent; /**< extent of the restore */
615 struct mdt_lock_handle crh_lh; /**< lock handle */
617 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
619 struct hsm_record_update {
621 enum agent_req_status status;
624 static inline const struct md_device_operations *
625 mdt_child_ops(struct mdt_device * m)
627 LASSERT(m->mdt_child);
628 return m->mdt_child->md_ops;
631 static inline struct md_object *mdt_object_child(struct mdt_object *o)
634 return lu2md(lu_object_next(&o->mot_obj));
637 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
639 return info->mti_pill ? info->mti_pill->rc_req : NULL;
642 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
644 LASSERT(info->mti_exp);
645 return exp_connect_flags(info->mti_exp);
648 static inline void mdt_object_get(const struct lu_env *env,
649 struct mdt_object *o)
652 lu_object_get(&o->mot_obj);
656 static inline void mdt_object_put(const struct lu_env *env,
657 struct mdt_object *o)
660 lu_object_put(env, &o->mot_obj);
664 static inline int mdt_object_exists(const struct mdt_object *o)
666 return lu_object_exists(&o->mot_obj);
669 static inline int mdt_object_remote(const struct mdt_object *o)
671 return lu_object_remote(&o->mot_obj);
674 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
676 return lu_object_fid(&o->mot_obj);
679 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
681 return mdt->mdt_lu_dev.ld_site;
684 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
686 return &mdt->mdt_seq_site;
689 static inline void mdt_export_evict(struct obd_export *exp)
691 class_fail_export(exp);
694 /* Here we use LVB_TYPE to check dne client, because it is
695 * also landed on 2.4. */
696 static inline bool mdt_is_dne_client(struct obd_export *exp)
698 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
701 static inline bool mdt_is_striped_client(struct obd_export *exp)
703 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
706 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
708 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
712 mdt_lmm_dom_entry_check(lmm, &dom_only);
716 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
718 return mdt_lmm_dom_entry_check(lmm, NULL);
721 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
723 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
725 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
726 le16_to_cpu(lcm->lcm_mirror_count) > 0;
729 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
731 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
732 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
733 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
738 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
740 struct lov_comp_md_v1 *comp_v1;
741 struct lov_mds_md *v1;
745 comp_v1 = (struct lov_comp_md_v1 *)lmm;
747 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
748 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
749 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
751 if (lmm_is_overstriping(v1))
758 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
760 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
761 return mdt_lmm_comp_overstriping(lmm);
763 return lmm_is_overstriping(lmm);
766 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
768 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
769 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
772 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
773 void mdt_set_disposition(struct mdt_thread_info *info,
774 struct ldlm_reply *rep, __u64 op_flag);
775 void mdt_clear_disposition(struct mdt_thread_info *info,
776 struct ldlm_reply *rep, __u64 op_flag);
778 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
779 const struct lu_name *lname);
781 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
782 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
784 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
785 struct mdt_lock_handle *lh);
787 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
788 struct mdt_lock_handle *lhc);
790 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
791 struct mdt_lock_handle *lh, __u64 ibits);
793 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
794 struct mdt_lock_handle *lh, __u64 ibits,
797 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
798 struct mdt_lock_handle *lh, __u64 *ibits,
799 __u64 trybits, bool cos_incompat);
801 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
802 struct mdt_lock_handle *lh, int decref);
803 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
804 enum ldlm_mode mode, int decref);
806 struct mdt_object *mdt_object_new(const struct lu_env *env,
808 const struct lu_fid *);
809 struct mdt_object *mdt_object_find(const struct lu_env *,
811 const struct lu_fid *);
812 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
813 const struct lu_fid *,
814 struct mdt_lock_handle *,
816 void mdt_object_unlock_put(struct mdt_thread_info *,
818 struct mdt_lock_handle *,
821 void mdt_client_compatibility(struct mdt_thread_info *info);
823 int mdt_remote_object_lock(struct mdt_thread_info *mti,
824 struct mdt_object *o, const struct lu_fid *fid,
825 struct lustre_handle *lh,
826 enum ldlm_mode mode, __u64 ibits, bool cache);
827 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
828 struct mdt_lock_handle *lh, __u64 *ibits,
829 __u64 trybits, bool cos_incompat);
830 int mdt_reint_striped_lock(struct mdt_thread_info *info,
831 struct mdt_object *o,
832 struct mdt_lock_handle *lh,
834 struct ldlm_enqueue_info *einfo,
836 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
837 struct mdt_object *o,
838 struct mdt_lock_handle *lh,
839 struct ldlm_enqueue_info *einfo, int decref);
841 enum mdt_name_flags {
845 int mdt_name_unpack(struct req_capsule *pill,
846 const struct req_msg_field *field,
848 enum mdt_name_flags flags);
849 int mdt_close_unpack(struct mdt_thread_info *info);
850 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
851 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
852 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
853 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
854 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
855 struct mdt_object *o, struct lu_nodemap *nodemap);
857 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
858 const struct lu_attr *attr, const struct lu_fid *fid);
859 int mdt_pack_size2body(struct mdt_thread_info *info,
860 const struct lu_fid *fid, struct lustre_handle *lh);
861 int mdt_getxattr(struct mdt_thread_info *info);
862 int mdt_reint_setxattr(struct mdt_thread_info *info,
863 struct mdt_lock_handle *lh);
865 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
866 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
868 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
869 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
870 struct mdt_lock_handle *lhc);
872 extern void target_recovery_fini(struct obd_device *obd);
873 extern void target_recovery_init(struct lu_target *lut,
874 svc_handler_t handler);
875 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
876 struct obd_device *, struct lustre_sb_info *lsi);
877 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
879 int mdt_export_stats_init(struct obd_device *obd,
880 struct obd_export *exp,
883 int mdt_lock_new_child(struct mdt_thread_info *info,
884 struct mdt_object *o,
885 struct mdt_lock_handle *child_lockh);
886 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
887 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
888 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
889 const struct lustre_handle *open_handle,
891 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
892 struct mdt_object *pobj,
893 struct mdt_object *obj);
895 int mdt_get_info(struct tgt_session_info *tsi);
896 int mdt_attr_get_complex(struct mdt_thread_info *info,
897 struct mdt_object *o, struct md_attr *ma);
898 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
900 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
901 struct md_attr *ma, const char *name);
902 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
903 struct md_attr *ma, const char *name);
904 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
905 struct lu_fid *pfid);
906 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
907 struct lu_fid *pfid, struct lu_name *lname);
908 int mdt_write_get(struct mdt_object *o);
909 void mdt_write_put(struct mdt_object *o);
910 int mdt_write_read(struct mdt_object *o);
911 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
912 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
913 void mdt_mfd_free(struct mdt_file_data *mfd);
914 int mdt_close(struct tgt_session_info *tsi);
915 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
917 int mdt_fix_reply(struct mdt_thread_info *info);
918 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
920 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
921 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
922 struct mdt_lock_handle *lhc,
923 struct md_layout_change *spec);
924 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
926 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
927 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
928 const void *area, ssize_t len);
930 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
931 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
933 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
934 int mdt_check_ucred(struct mdt_thread_info *);
935 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
936 int mdt_init_ucred_reint(struct mdt_thread_info *);
937 void mdt_exit_ucred(struct mdt_thread_info *);
938 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
939 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
940 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
942 int mdt_lookup_version_check(struct mdt_thread_info *info,
943 struct mdt_object *p,
944 const struct lu_name *lname,
945 struct lu_fid *fid, int idx);
946 void mdt_thread_info_init(struct ptlrpc_request *req,
947 struct mdt_thread_info *mti);
948 void mdt_thread_info_fini(struct mdt_thread_info *mti);
949 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
950 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
951 struct ldlm_lock *new_lock,
952 struct mdt_lock_handle *lh, __u64 flags);
953 int mdt_intent_lock_replace(struct mdt_thread_info *info,
954 struct ldlm_lock **lockp,
955 struct mdt_lock_handle *lh,
956 __u64 flags, int result);
958 int hsm_init_ucred(struct lu_ucred *uc);
959 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
960 const struct md_hsm *mh);
962 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
963 void *data, int flag);
964 int mdt_links_read(struct mdt_thread_info *info,
965 struct mdt_object *mdt_obj,
966 struct linkea_data *ldata);
967 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
968 struct mdt_body *repbody);
969 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
970 struct mdt_object *child);
971 int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
972 struct mdt_object *child);
974 static inline struct mdt_device *mdt_dev(struct lu_device *d)
976 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
979 static inline struct mdt_object *mdt_obj(struct lu_object *o)
981 return container_of_safe(o, struct mdt_object, mot_obj);
984 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
986 struct lu_object *lo;
987 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
989 lo = lu_object_locate(mo->mot_obj.lo_header,
990 mdt->mdt_bottom->dd_lu_dev.ld_type);
995 static inline bool agent_req_in_final_state(enum agent_req_status ars)
997 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
998 (ars == ARS_CANCELED));
1001 /* mdt/mdt_identity.c */
1002 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1004 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1006 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1008 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1010 void mdt_flush_identity(struct upcall_cache *, int);
1012 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
1014 /* mdt/mdt_recovery.c */
1015 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1018 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1019 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1020 int mdt_hsm_action(struct tgt_session_info *tsi);
1021 int mdt_hsm_progress(struct tgt_session_info *tsi);
1022 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1023 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1024 int mdt_hsm_request(struct tgt_session_info *tsi);
1026 /* mdt/mdt_hsm_cdt_actions.c */
1027 extern const struct file_operations mdt_hsm_actions_fops;
1028 void dump_llog_agent_req_rec(const char *prefix,
1029 const struct llog_agent_req_rec *larr);
1030 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1031 llog_cb_t cb, void *data, u32 start_cat_idx,
1032 u32 start_rec_idx, int rw);
1033 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1034 __u32 archive_id, __u64 flags,
1035 struct hsm_action_item *hai);
1036 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
1037 struct hsm_record_update *updates,
1038 unsigned int updates_count);
1039 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1041 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1042 u32 *cat_idt, u32 *rec_idx);
1043 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1045 /* mdt/mdt_hsm_cdt_agent.c */
1046 extern const struct file_operations mdt_hsm_agent_fops;
1047 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1048 const struct obd_uuid *uuid,
1049 int nr_archives, __u32 *archive_num);
1050 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1051 const struct obd_uuid *uuid,
1052 __u32 archive_mask);
1053 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1054 const struct obd_uuid *uuid);
1055 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1056 int succ_rq, int fail_rq, int new_rq,
1057 const struct obd_uuid *uuid);
1058 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1059 struct obd_uuid *uuid);
1060 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1062 /* mdt/mdt_hsm_cdt_client.c */
1063 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1064 struct hsm_action_list *hal);
1065 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1066 const struct lu_fid *fid,
1067 enum hsm_copytool_action *action,
1068 enum agent_req_status *status,
1069 struct hsm_extent *extent);
1070 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1071 const struct lu_fid *fid);
1072 /* mdt/mdt_hsm_cdt_requests.c */
1073 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1074 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1075 extern const struct file_operations mdt_hsm_active_requests_fops;
1076 void dump_requests(char *prefix, struct coordinator *cdt);
1077 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1078 struct obd_uuid *uuid,
1079 struct hsm_action_item *hai);
1080 void mdt_cdt_free_request(struct cdt_agent_req *car);
1081 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1082 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1083 void mdt_cdt_get_request(struct cdt_agent_req *car);
1084 void mdt_cdt_put_request(struct cdt_agent_req *car);
1085 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1086 const struct hsm_progress_kernel *pgs);
1087 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1088 /* mdt/mdt_coordinator.c */
1089 void mdt_hsm_dump_hal(int level, const char *prefix,
1090 struct hsm_action_list *hal);
1091 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1092 const struct lu_fid *fid,
1093 const struct hsm_extent *he);
1094 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1095 const struct lu_fid *fid);
1096 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1097 struct coordinator *cdt, const struct lu_fid *fid);
1098 /* coordinator management */
1099 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1100 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1101 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1104 * Signal the coordinator has work to do
1105 * \param cdt [IN] coordinator
1107 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1109 cdt->cdt_event = true;
1112 /* coordinator control sysfs interface */
1113 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1115 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1116 const char *buffer, size_t count);
1117 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1118 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1119 /* md_hsm helpers */
1120 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1121 const struct lu_fid *fid,
1122 struct md_hsm *hsm);
1123 /* actions/request helpers */
1124 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1125 struct hsm_action_list *hal, struct obd_uuid *uuid);
1126 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1127 u32 archive_id, u64 rq_flags,
1128 const struct md_hsm *hsm);
1129 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1130 struct hsm_progress_kernel *pgs);
1132 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1133 struct mdt_object *o, struct md_attr *ma);
1135 extern struct lu_context_key mdt_thread_key;
1137 /* debug issues helper starts here*/
1138 static inline int mdt_fail_write(const struct lu_env *env,
1139 struct dt_device *dd, int id)
1141 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1142 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1144 return dt_ro(env, dd);
1145 /* We set FAIL_ONCE because we never "un-fail" a device */
1151 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1153 return &req->rq_export->exp_mdt_data;
1156 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1158 return mdt_dev(exp->exp_obd->obd_lu_dev);
1161 static inline bool mdt_rdonly(struct obd_export *exp)
1163 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1164 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1165 mdt_exp2dev(exp)->mdt_readonly);
1168 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1169 struct mdt_lock_handle *lhc);
1170 static inline int mdt_check_resent(struct mdt_thread_info *info,
1171 mdt_reconstruct_t reconstruct,
1172 struct mdt_lock_handle *lhc)
1174 struct ptlrpc_request *req = mdt_info_req(info);
1178 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1179 OBD_ALLOC_PTR(info->mti_reply_data);
1180 if (info->mti_reply_data == NULL)
1183 rc = req_can_reconstruct(req, info->mti_reply_data);
1185 reconstruct(info, lhc);
1187 DEBUG_REQ(D_HA, req,
1188 "no reply data found for RESENT req, rc = %d",
1191 OBD_FREE_PTR(info->mti_reply_data);
1192 info->mti_reply_data = NULL;
1197 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1198 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1200 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1202 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1205 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1207 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1209 return -ELDLM_NO_LOCK_DATA;
1212 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1213 static inline int mdt_fid_lock(const struct lu_env *env,
1214 struct ldlm_namespace *ns,
1215 struct lustre_handle *lh, enum ldlm_mode mode,
1216 union ldlm_policy_data *policy,
1217 const struct ldlm_res_id *res_id,
1218 __u64 flags, const __u64 *client_cookie)
1221 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1223 LASSERT(ns != NULL);
1224 LASSERT(lh != NULL);
1226 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1227 mode, &flags, mdt_blocking_ast,
1228 ldlm_completion_ast,
1229 glimpse ? mdt_dom_glimpse_ast : NULL,
1230 NULL, 0, LVB_T_NONE, client_cookie, lh);
1231 return rc == ELDLM_OK ? 0 : -EIO;
1234 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1236 ldlm_lock_decref(lh, mode);
1239 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1241 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1244 extern mdl_mode_t mdt_mdl_lock_modes[];
1245 extern enum ldlm_mode mdt_dlm_lock_modes[];
1247 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1249 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1251 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1252 return mdt_mdl_lock_modes[mode];
1255 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1257 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1258 return mdt_dlm_lock_modes[mode];
1262 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1263 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1264 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1265 struct md_attr *ma);
1266 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1267 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1271 extern struct ldlm_valblock_ops mdt_lvbo;
1272 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1273 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1274 struct ptlrpc_request *req, bool increase_only);
1276 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1277 int mdt_cos_is_enabled(struct mdt_device *);
1295 LPROC_MDT_SAMEDIR_RENAME,
1296 LPROC_MDT_CROSSDIR_RENAME,
1304 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1305 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset);
1306 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1307 void mdt_tunables_fini(struct mdt_device *mdt);
1309 /* lustre/mdt_mdt_lproc.c */
1310 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1312 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1313 struct mdt_device *mdt,
1314 struct ptlrpc_request *req,
1315 struct mdt_object *src, struct mdt_object *tgt,
1318 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1320 return mdt->mdt_lu_dev.ld_obd;
1323 extern const struct lu_device_operations mdt_lu_ops;
1325 static inline char *mdt_obd_name(struct mdt_device *mdt)
1327 return mdt->mdt_lu_dev.ld_obd->obd_name;
1330 int mds_mod_init(void);
1331 void mds_mod_exit(void);
1333 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1335 struct obd_export *exp = req->rq_export;
1338 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1339 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1346 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1347 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1349 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1350 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1351 struct niobuf_remote *rnb, int *nr_local,
1352 struct niobuf_local *lnb);
1354 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1355 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1356 struct niobuf_remote *rnb, int npages,
1357 struct niobuf_local *lnb, int old_rc);
1358 int mdt_punch_hdl(struct tgt_session_info *tsi);
1359 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1360 struct ldlm_lock **lockp, __u64 flags);
1361 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1362 struct ldlm_lock **lockp, __u64 flags);
1363 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1364 struct lustre_handle *lh);
1365 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1366 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1367 struct ldlm_resource *res, bool increase_only);
1368 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1369 bool increase_only);
1370 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1372 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1373 struct mdt_object *mo)
1375 return lu_object_is_dying(&mo->mot_header) &&
1376 S_ISREG(lu_object_attr(&mo->mot_obj));
1379 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1380 const struct lu_fid *fid, struct mdt_body *mb,
1382 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1383 const struct lu_fid *fid);
1384 void mdt_hp_brw(struct tgt_session_info *tsi);
1385 void mdt_hp_punch(struct tgt_session_info *tsi);
1386 int mdt_data_version_get(struct tgt_session_info *tsi);
1389 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1390 u64 want, bool conservative);
1391 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1393 static inline bool mdt_is_rootadmin(struct mdt_thread_info *info)
1395 struct lu_ucred *uc = NULL;
1399 if (info == NULL || info->mti_body == NULL)
1400 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1401 /* return true in case old client did not send mdt body */
1407 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1411 uc = mdt_ucred(info);
1412 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1413 md_capable(uc, CAP_SYS_ADMIN));
1415 mdt_exit_ucred(info);
1420 int mdt_reint_migrate(struct mdt_thread_info *info,
1421 struct mdt_lock_handle *unused);
1422 int mdt_dir_layout_update(struct mdt_thread_info *info);
1424 /* directory restripe */
1425 int mdt_restripe_internal(struct mdt_thread_info *info,
1426 struct mdt_object *parent,
1427 struct mdt_object *child,
1428 const struct lu_name *lname,
1429 struct lu_fid *tfid,
1430 struct md_op_spec *spec,
1431 struct md_attr *ma);
1432 int mdt_restriper_start(struct mdt_device *mdt);
1433 void mdt_restriper_stop(struct mdt_device *mdt);
1434 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1435 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1436 struct mdt_object *o);
1437 void mdt_restripe_update_add(struct mdt_thread_info *info,
1438 struct mdt_object *o);
1439 int mdt_is_remote_object(struct mdt_thread_info *info,
1440 struct mdt_object *parent,
1441 struct mdt_object *child);
1443 #endif /* _MDT_INTERNAL_H */