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_eacl.h>
60 #include <lustre_quota.h>
61 #include <lustre_linkea.h>
62 #include <lustre_lmv.h>
66 /* file data for open files on MDS */
67 struct mdt_file_data {
68 /** portals handle must be first */
69 struct portals_handle mfd_open_handle;
70 /* export data of portals_handle */
71 const struct mdt_export_data *mfd_owner;
72 /** open mode provided by client */
74 /** protected by med_open_lock */
75 struct list_head mfd_list;
76 /** xid of the open request */
78 /** old handle in replay case */
79 struct lustre_handle mfd_open_handle_old;
80 /** point to opened object */
81 struct mdt_object *mfd_object;
84 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
85 #define CDT_NORETRY_ACTION (1ULL << 1)
86 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
87 #define CDT_POLICY_SHIFT_COUNT 2
88 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
91 /* when adding a new policy, do not forget to update
92 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
94 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
96 /* Coordinator states. Keep the cdt_transition table in sync. */
97 enum cdt_states { CDT_STOPPED = 0,
106 static inline char *cdt_mdt_state2str(int state)
124 /* when multiple lock are needed, the lock order is
132 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
133 bool cdt_event; /**< coordinator event */
134 struct task_struct *cdt_task; /**< cdt thread handle */
135 struct lu_env cdt_env; /**< coordinator lustre
137 struct lu_context cdt_session; /** session for lu_ucred */
138 struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
139 struct completion cdt_kobj_unregister;
140 struct kobject cdt_hsm_kobj; /* hsm sysfs object */
141 __u64 cdt_policy; /**< policy flags */
142 enum cdt_states cdt_state; /**< state */
143 struct mutex cdt_state_lock; /**< cdt_state lock */
144 __u64 cdt_last_cookie; /**< last cookie
146 struct rw_semaphore cdt_llog_lock; /**< protect llog
148 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
149 struct rw_semaphore cdt_request_lock; /**< protect request
151 struct mutex cdt_restore_lock; /**< protect restore
153 timeout_t cdt_loop_period; /**< llog scan period */
154 timeout_t cdt_grace_delay; /**< request grace
156 timeout_t cdt_active_req_timeout; /**< request timeout */
157 __u32 cdt_default_archive_id; /**< archive id used
160 u64 cdt_max_requests; /**< max count of started
162 /** Current count of active requests */
163 atomic_t cdt_request_count; /** total */
164 atomic_t cdt_archive_count;
165 atomic_t cdt_restore_count;
166 atomic_t cdt_remove_count;
168 /* started requests (struct cdt_agent_req:car_cookie_hash)
169 * indexed by cookie */
170 struct cfs_hash *cdt_request_cookie_hash;
171 /* started requests (struct cdt_agent_req:car_request_list) */
172 struct list_head cdt_request_list;
173 struct list_head cdt_agents; /**< list of register
175 struct list_head cdt_restore_handle_list;
177 /* Hash of cookies to locations of record locations in agent
179 struct cfs_hash *cdt_agent_record_hash;
181 /* Bitmasks indexed by the HSMA_XXX constants. */
182 __u64 cdt_user_request_mask;
183 __u64 cdt_group_request_mask;
184 __u64 cdt_other_request_mask;
186 /* Remove archive on last unlink policy */
187 bool cdt_remove_archive_on_last_unlink;
189 bool cdt_wakeup_coordinator;
192 /* mdt state flag bits */
193 #define MDT_FL_CFGLOG 0
194 #define MDT_FL_SYNCED 1
196 /* possible values for mo_dom_lock */
198 NO_DOM_LOCK_ON_OPEN = 0,
199 TRYLOCK_DOM_ON_OPEN = 1,
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;
297 /* user with gid can create remote/striped
298 * dir, and set default dir stripe */
299 gid_t mdt_enable_remote_dir_gid;
300 /* user with this gid can change projid */
301 gid_t mdt_enable_chprojid_gid;
303 /* lock for osfs and md_root */
306 /* statfs optimization: we cache a bit */
307 struct mdt_statfs_cache mdt_sum_osfs;
308 struct mdt_statfs_cache mdt_osfs;
311 struct root_squash_info mdt_squash;
313 struct rename_stats mdt_rename_stats;
314 struct lu_fid mdt_md_root_fid;
316 /* connection to quota master */
317 struct obd_export *mdt_qmt_exp;
318 /* quota master device associated with this MDT */
319 struct lu_device *mdt_qmt_dev;
321 struct coordinator mdt_coordinator;
323 /* inter-MDT connection count */
324 atomic_t mdt_mds_mds_conns;
326 /* MDT device async commit count, used for debug and sanity test */
327 atomic_t mdt_async_commit_count;
329 struct mdt_object *mdt_md_root;
331 struct mdt_dir_restriper mdt_restriper;
334 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
335 #define MDT_COS_DEFAULT (0)
337 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
340 struct lu_object_header mot_header;
341 struct lu_object mot_obj;
342 unsigned int mot_lov_created:1, /* lov object created */
343 mot_cache_attr:1, /* enable remote object
345 mot_restriping:1, /* dir restriping */
346 /* dir auto-split disabled */
347 mot_auto_split_disabled:1;
349 spinlock_t mot_write_lock;
350 /* Lock to protect create_data */
351 struct mutex mot_lov_mutex;
352 /* Lock to protect object's SOM update. */
353 struct mutex mot_som_mutex;
354 /* lock to protect read/write stages for Data-on-MDT files */
355 struct rw_semaphore mot_dom_sem;
356 /* Lock to protect lease open.
357 * Lease open acquires write lock; normal open acquires read lock */
358 struct rw_semaphore mot_open_sem;
359 atomic_t mot_lease_count;
360 atomic_t mot_open_count;
361 /* directory offset, used in sub file migration in dir restripe */
362 loff_t mot_restripe_offset;
363 /* link to mdt_restriper auto_splitting/migrating/updating */
364 struct list_head mot_restripe_linkage;
367 struct mdt_lock_handle {
368 /* Lock type, reg for cross-ref use or pdo lock. */
372 struct lustre_handle mlh_reg_lh;
373 enum ldlm_mode mlh_reg_mode;
376 struct lustre_handle mlh_pdo_lh;
377 enum ldlm_mode mlh_pdo_mode;
378 unsigned int mlh_pdo_hash;
380 /* Remote regular lock */
381 struct lustre_handle mlh_rreg_lh;
382 enum ldlm_mode mlh_rreg_mode;
386 MDT_LH_PARENT, /* parent lockh */
387 MDT_LH_CHILD, /* child lockh */
388 MDT_LH_OLD, /* old lockh for rename */
389 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
390 MDT_LH_NEW, /* new lockh for rename */
391 MDT_LH_RMT, /* used for return lh to caller */
392 MDT_LH_LOCAL, /* local lock never return to client */
401 /* Special magical errno for communicaiton between mdt_reint_open()
402 * and mdt_intent_reint() which means return the lock to the client
403 * for subsequent cross ref open. Previously we used plain -EREMOTE
404 * but other functions called in that path might return it too and
405 * confuse us. This is not returned to the client. See LU-5370. */
406 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
408 struct mdt_reint_record {
409 enum mds_reint_op rr_opcode;
410 const struct lustre_handle *rr_open_handle;
411 const struct lustre_handle *rr_lease_handle;
412 const struct lu_fid *rr_fid1;
413 const struct lu_fid *rr_fid2;
414 struct lu_name rr_name;
415 struct lu_name rr_tgt_name;
422 enum mdt_reint_flag {
423 MRF_OPEN_TRUNC = BIT(0),
427 * Common data shared by mdt-level handlers. This is allocated per-thread to
428 * reduce stack consumption.
430 struct mdt_thread_info {
433 * The following members will be filled explicitly
434 * with specific data in mdt_thread_info_init().
436 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
437 * request handling may migrate from one server thread to another.
439 struct req_capsule *mti_pill;
441 /* although we have export in req, there are cases when it is not
442 * available, e.g. closing files upon export destroy */
443 struct obd_export *mti_exp;
445 * A couple of lock handles.
447 struct mdt_lock_handle mti_lh[MDT_LH_NR];
449 struct mdt_device *mti_mdt;
450 const struct lu_env *mti_env;
452 /* transaction number of current request */
457 * The following members will be filled expilictly
458 * with zero in mdt_thread_info_init(). These members may be used
465 struct md_attr mti_attr;
466 struct md_attr mti_attr2; /* mdt_lvb.c */
468 * Body for "habeo corpus" operations.
470 const struct mdt_body *mti_body;
472 * Host object. This is released at the end of mdt_handler().
474 struct mdt_object *mti_object;
476 * Lock request for "habeo clavis" operations.
478 const struct ldlm_request *mti_dlm_req;
480 __u32 mti_has_trans:1, /* has txn already? */
482 /* big_lmm buffer was used and must be used in reply */
487 /* opdata for mdt_reint_open(), has the same as
488 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
489 * value onto disk for recovery when mdt_trans_stop_cb() is called.
495 * The following members will be filled explicitly
496 * with zero in mdt_reint_unpack(), because they are only used
497 * by reint requests (including mdt_reint_open()).
501 * reint record. contains information for reint operations.
503 struct mdt_reint_record mti_rr;
505 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
507 * Operation specification (currently create and lookup)
509 struct md_op_spec mti_spec;
513 * The following members will _NOT_ be initialized at all.
514 * DO NOT expect them to contain any valid value.
515 * They should be initialized explicitly by the user themselves.
518 /* XXX: If something is in a union, make sure they do not conflict */
519 struct lu_fid mti_tmp_fid1;
520 struct lu_fid mti_tmp_fid2;
521 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
522 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
524 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
525 char ns_name[48];/* for mdt_init0() */
526 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
527 struct obd_statfs osfs; /* for mdt_statfs() */
529 /* for mdt_readpage() */
530 struct lu_rdpg mti_rdpg;
540 struct lustre_handle mti_open_handle;
542 struct lu_buf mti_buf;
543 struct lu_buf mti_big_buf;
545 /* Ops object filename */
546 struct lu_name mti_name;
547 char mti_filename[NAME_MAX + 1];
548 /* per-thread values, can be re-used, may be vmalloc'd */
553 /* should be enough to fit lustre_mdt_attrs */
554 char mti_xattr_buf[128];
555 struct ldlm_enqueue_info mti_einfo[2];
556 /* einfo used by mdt_remote_object_lock_try() */
557 struct ldlm_enqueue_info mti_remote_einfo;
558 struct tg_reply_data *mti_reply_data;
560 /* FLR: layout change API */
561 struct md_layout_change mti_mlc;
563 struct lu_seq_range mti_range;
566 extern struct lu_context_key mdt_thread_key;
568 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
570 return lu_env_info(env, &mdt_thread_key);
573 struct cdt_req_progress {
574 struct mutex crp_lock; /**< protect tree */
575 struct interval_node *crp_root; /**< tree to track extent
577 struct interval_node **crp_node; /**< buffer for tree nodes
578 * vector of fixed size
580 int crp_cnt; /**< # of used nodes */
581 int crp_max; /**< # of allocated nodes */
584 struct cdt_agent_req {
585 struct hlist_node car_cookie_hash; /**< find req by cookie */
586 struct list_head car_request_list; /**< to chain all the req. */
587 atomic_t car_refcount; /**< reference counter */
588 __u64 car_flags; /**< request original flags */
589 struct obd_uuid car_uuid; /**< agent doing the req. */
590 __u32 car_archive_id; /**< archive id */
591 int car_canceled; /**< request was canceled */
592 time64_t car_req_start; /**< start time */
593 time64_t car_req_update; /**< last update time */
594 struct hsm_action_item *car_hai; /**< req. to the agent */
595 struct cdt_req_progress car_progress; /**< track data mvt
598 extern struct kmem_cache *mdt_hsm_car_kmem;
601 struct list_head ha_list; /**< to chain the agents */
602 struct obd_uuid ha_uuid; /**< agent uuid */
603 __u32 *ha_archive_id; /**< archive id */
604 int ha_archive_cnt; /**< number of archive entries
605 * 0 means any archive */
606 atomic_t ha_requests; /**< current request count */
607 atomic_t ha_success; /**< number of successful
609 atomic_t ha_failure; /**< number of failed actions */
612 struct cdt_restore_handle {
613 struct list_head crh_list; /**< to chain the handle */
614 struct lu_fid crh_fid; /**< fid of the object */
615 struct ldlm_extent crh_extent; /**< extent of the restore */
616 struct mdt_lock_handle crh_lh; /**< lock handle */
618 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
620 struct hsm_record_update {
622 enum agent_req_status status;
625 static inline const struct md_device_operations *
626 mdt_child_ops(struct mdt_device * m)
628 LASSERT(m->mdt_child);
629 return m->mdt_child->md_ops;
632 static inline struct md_object *mdt_object_child(struct mdt_object *o)
635 return lu2md(lu_object_next(&o->mot_obj));
638 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
640 return info->mti_pill ? info->mti_pill->rc_req : NULL;
643 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
645 LASSERT(info->mti_exp);
646 return exp_connect_flags(info->mti_exp);
649 static inline void mdt_object_get(const struct lu_env *env,
650 struct mdt_object *o)
653 lu_object_get(&o->mot_obj);
657 static inline void mdt_object_put(const struct lu_env *env,
658 struct mdt_object *o)
661 lu_object_put(env, &o->mot_obj);
665 static inline int mdt_object_exists(const struct mdt_object *o)
667 return lu_object_exists(&o->mot_obj);
670 static inline int mdt_object_remote(const struct mdt_object *o)
672 return lu_object_remote(&o->mot_obj);
675 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
677 return lu_object_fid(&o->mot_obj);
680 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
682 return mdt->mdt_lu_dev.ld_site;
685 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
687 return &mdt->mdt_seq_site;
690 static inline void mdt_export_evict(struct obd_export *exp)
692 class_fail_export(exp);
695 /* Here we use LVB_TYPE to check dne client, because it is
696 * also landed on 2.4. */
697 static inline bool mdt_is_dne_client(struct obd_export *exp)
699 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
702 static inline bool mdt_is_striped_client(struct obd_export *exp)
704 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
707 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
709 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
713 mdt_lmm_dom_entry_check(lmm, &dom_only);
717 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
719 return mdt_lmm_dom_entry_check(lmm, NULL);
722 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
724 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
726 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
727 le16_to_cpu(lcm->lcm_mirror_count) > 0;
730 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
732 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
733 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
734 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
739 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
741 struct lov_comp_md_v1 *comp_v1;
742 struct lov_mds_md *v1;
746 comp_v1 = (struct lov_comp_md_v1 *)lmm;
748 for (i = 1; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
749 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
750 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
752 if (lmm_is_overstriping(v1))
759 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
761 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
762 return mdt_lmm_comp_overstriping(lmm);
764 return lmm_is_overstriping(lmm);
767 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
769 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
770 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
773 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
774 void mdt_set_disposition(struct mdt_thread_info *info,
775 struct ldlm_reply *rep, __u64 op_flag);
776 void mdt_clear_disposition(struct mdt_thread_info *info,
777 struct ldlm_reply *rep, __u64 op_flag);
779 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
780 const struct lu_name *lname);
782 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
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_reint_striped_lock(struct mdt_thread_info *info,
828 struct mdt_object *o,
829 struct mdt_lock_handle *lh,
831 struct ldlm_enqueue_info *einfo,
833 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
834 struct mdt_object *o,
835 struct mdt_lock_handle *lh,
836 struct ldlm_enqueue_info *einfo, int decref);
838 enum mdt_name_flags {
842 int mdt_name_unpack(struct req_capsule *pill,
843 const struct req_msg_field *field,
845 enum mdt_name_flags flags);
846 int mdt_close_unpack(struct mdt_thread_info *info);
847 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
848 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
849 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
850 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
851 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
852 struct mdt_object *o, struct lu_nodemap *nodemap);
854 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
855 const struct lu_attr *attr, const struct lu_fid *fid);
856 int mdt_pack_size2body(struct mdt_thread_info *info,
857 const struct lu_fid *fid, struct lustre_handle *lh);
858 int mdt_getxattr(struct mdt_thread_info *info);
859 int mdt_reint_setxattr(struct mdt_thread_info *info,
860 struct mdt_lock_handle *lh);
862 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
863 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
865 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
866 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
867 struct mdt_lock_handle *lhc);
869 extern void target_recovery_fini(struct obd_device *obd);
870 extern void target_recovery_init(struct lu_target *lut,
871 svc_handler_t handler);
872 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
873 struct obd_device *, struct lustre_sb_info *lsi);
874 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
876 int mdt_export_stats_init(struct obd_device *obd,
877 struct obd_export *exp,
880 int mdt_lock_new_child(struct mdt_thread_info *info,
881 struct mdt_object *o,
882 struct mdt_lock_handle *child_lockh);
883 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
884 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
885 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
886 const struct lustre_handle *open_handle,
888 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
889 struct mdt_object *pobj,
890 struct mdt_object *obj);
892 int mdt_get_info(struct tgt_session_info *tsi);
893 int mdt_attr_get_complex(struct mdt_thread_info *info,
894 struct mdt_object *o, struct md_attr *ma);
895 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
897 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
898 struct md_attr *ma, const char *name);
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_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
902 struct lu_fid *pfid);
903 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
904 struct lu_fid *pfid, struct lu_name *lname);
905 int mdt_write_get(struct mdt_object *o);
906 void mdt_write_put(struct mdt_object *o);
907 int mdt_write_read(struct mdt_object *o);
908 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
909 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
910 void mdt_mfd_free(struct mdt_file_data *mfd);
911 int mdt_close(struct tgt_session_info *tsi);
912 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
914 int mdt_fix_reply(struct mdt_thread_info *info);
915 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
917 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
918 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
919 struct mdt_lock_handle *lhc,
920 struct md_layout_change *spec);
921 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
923 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
924 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
925 const void *area, ssize_t len);
927 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
928 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
930 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
931 int mdt_check_ucred(struct mdt_thread_info *);
932 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
933 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
934 int mdt_init_ucred_reint(struct mdt_thread_info *);
935 void mdt_exit_ucred(struct mdt_thread_info *);
936 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
937 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
938 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
940 int mdt_lookup_version_check(struct mdt_thread_info *info,
941 struct mdt_object *p,
942 const struct lu_name *lname,
943 struct lu_fid *fid, int idx);
944 void mdt_thread_info_init(struct ptlrpc_request *req,
945 struct mdt_thread_info *mti);
946 void mdt_thread_info_fini(struct mdt_thread_info *mti);
947 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
948 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
949 struct ldlm_lock *new_lock,
950 struct mdt_lock_handle *lh, __u64 flags);
951 int mdt_intent_lock_replace(struct mdt_thread_info *info,
952 struct ldlm_lock **lockp,
953 struct mdt_lock_handle *lh,
954 __u64 flags, int result);
956 int hsm_init_ucred(struct lu_ucred *uc);
957 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
958 const struct md_hsm *mh);
960 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
961 void *data, int flag);
962 int mdt_links_read(struct mdt_thread_info *info,
963 struct mdt_object *mdt_obj,
964 struct linkea_data *ldata);
965 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
966 struct mdt_body *repbody);
967 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
968 struct mdt_object *child);
970 static inline struct mdt_device *mdt_dev(struct lu_device *d)
972 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
975 static inline struct mdt_object *mdt_obj(struct lu_object *o)
977 return container_of_safe(o, struct mdt_object, mot_obj);
980 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
982 struct lu_object *lo;
983 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
985 lo = lu_object_locate(mo->mot_obj.lo_header,
986 mdt->mdt_bottom->dd_lu_dev.ld_type);
991 static inline bool agent_req_in_final_state(enum agent_req_status ars)
993 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
994 (ars == ARS_CANCELED));
997 /* mdt/mdt_identity.c */
998 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1000 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1002 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1004 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1006 void mdt_flush_identity(struct upcall_cache *, int);
1008 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
1010 /* mdt/mdt_recovery.c */
1011 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1014 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1015 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1016 int mdt_hsm_action(struct tgt_session_info *tsi);
1017 int mdt_hsm_progress(struct tgt_session_info *tsi);
1018 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1019 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1020 int mdt_hsm_request(struct tgt_session_info *tsi);
1022 /* mdt/mdt_hsm_cdt_actions.c */
1023 extern const struct file_operations mdt_hsm_actions_fops;
1024 void dump_llog_agent_req_rec(const char *prefix,
1025 const struct llog_agent_req_rec *larr);
1026 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1027 llog_cb_t cb, void *data, u32 start_cat_idx,
1028 u32 start_rec_idx, int rw);
1029 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1030 __u32 archive_id, __u64 flags,
1031 struct hsm_action_item *hai);
1032 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
1033 struct hsm_record_update *updates,
1034 unsigned int updates_count);
1035 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1037 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1038 u32 *cat_idt, u32 *rec_idx);
1039 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1041 /* mdt/mdt_hsm_cdt_agent.c */
1042 extern const struct file_operations mdt_hsm_agent_fops;
1043 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1044 const struct obd_uuid *uuid,
1045 int nr_archives, __u32 *archive_num);
1046 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1047 const struct obd_uuid *uuid,
1048 __u32 archive_mask);
1049 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1050 const struct obd_uuid *uuid);
1051 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1052 int succ_rq, int fail_rq, int new_rq,
1053 const struct obd_uuid *uuid);
1054 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1055 struct obd_uuid *uuid);
1056 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1058 /* mdt/mdt_hsm_cdt_client.c */
1059 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1060 struct hsm_action_list *hal);
1061 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1062 const struct lu_fid *fid,
1063 enum hsm_copytool_action *action,
1064 enum agent_req_status *status,
1065 struct hsm_extent *extent);
1066 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1067 const struct lu_fid *fid);
1068 /* mdt/mdt_hsm_cdt_requests.c */
1069 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1070 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1071 extern const struct file_operations mdt_hsm_active_requests_fops;
1072 void dump_requests(char *prefix, struct coordinator *cdt);
1073 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1074 struct obd_uuid *uuid,
1075 struct hsm_action_item *hai);
1076 void mdt_cdt_free_request(struct cdt_agent_req *car);
1077 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1078 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1079 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
1080 void mdt_cdt_get_request(struct cdt_agent_req *car);
1081 void mdt_cdt_put_request(struct cdt_agent_req *car);
1082 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1083 const struct hsm_progress_kernel *pgs);
1084 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1085 /* mdt/mdt_coordinator.c */
1086 void mdt_hsm_dump_hal(int level, const char *prefix,
1087 struct hsm_action_list *hal);
1088 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1089 const struct lu_fid *fid,
1090 const struct hsm_extent *he);
1091 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1092 const struct lu_fid *fid);
1093 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1094 struct coordinator *cdt, const struct lu_fid *fid);
1095 /* coordinator management */
1096 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1097 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1098 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1101 * Signal the coordinator has work to do
1102 * \param cdt [IN] coordinator
1104 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1106 cdt->cdt_event = true;
1109 /* coordinator control sysfs interface */
1110 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1112 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1113 const char *buffer, size_t count);
1114 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1115 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1116 /* md_hsm helpers */
1117 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1118 const struct lu_fid *fid,
1119 struct md_hsm *hsm);
1120 /* actions/request helpers */
1121 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1122 struct hsm_action_list *hal, struct obd_uuid *uuid);
1123 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1124 u32 archive_id, u64 rq_flags,
1125 const struct md_hsm *hsm);
1126 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1127 struct hsm_progress_kernel *pgs);
1129 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1130 struct mdt_object *o, struct md_attr *ma);
1132 extern struct lu_context_key mdt_thread_key;
1134 /* debug issues helper starts here*/
1135 static inline int mdt_fail_write(const struct lu_env *env,
1136 struct dt_device *dd, int id)
1138 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1139 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1141 return dt_ro(env, dd);
1142 /* We set FAIL_ONCE because we never "un-fail" a device */
1148 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1150 return &req->rq_export->exp_mdt_data;
1153 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1155 return mdt_dev(exp->exp_obd->obd_lu_dev);
1158 static inline bool mdt_rdonly(struct obd_export *exp)
1160 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1161 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1162 mdt_exp2dev(exp)->mdt_readonly);
1165 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1166 struct mdt_lock_handle *lhc);
1167 static inline int mdt_check_resent(struct mdt_thread_info *info,
1168 mdt_reconstruct_t reconstruct,
1169 struct mdt_lock_handle *lhc)
1171 struct ptlrpc_request *req = mdt_info_req(info);
1175 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1176 OBD_ALLOC_PTR(info->mti_reply_data);
1177 if (info->mti_reply_data == NULL)
1180 rc = req_can_reconstruct(req, info->mti_reply_data);
1182 reconstruct(info, lhc);
1184 DEBUG_REQ(D_HA, req,
1185 "no reply data found for RESENT req, rc = %d",
1188 OBD_FREE_PTR(info->mti_reply_data);
1189 info->mti_reply_data = NULL;
1194 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1195 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1197 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1199 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1202 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1204 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1206 return -ELDLM_NO_LOCK_DATA;
1209 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1210 static inline int mdt_fid_lock(const struct lu_env *env,
1211 struct ldlm_namespace *ns,
1212 struct lustre_handle *lh, enum ldlm_mode mode,
1213 union ldlm_policy_data *policy,
1214 const struct ldlm_res_id *res_id,
1215 __u64 flags, const __u64 *client_cookie)
1218 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1220 LASSERT(ns != NULL);
1221 LASSERT(lh != NULL);
1223 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1224 mode, &flags, mdt_blocking_ast,
1225 ldlm_completion_ast,
1226 glimpse ? mdt_dom_glimpse_ast : NULL,
1227 NULL, 0, LVB_T_NONE, client_cookie, lh);
1228 return rc == ELDLM_OK ? 0 : -EIO;
1231 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1233 ldlm_lock_decref(lh, mode);
1236 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1238 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1241 extern mdl_mode_t mdt_mdl_lock_modes[];
1242 extern enum ldlm_mode mdt_dlm_lock_modes[];
1244 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1246 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1248 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1249 return mdt_mdl_lock_modes[mode];
1252 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1254 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1255 return mdt_dlm_lock_modes[mode];
1259 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1260 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1261 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1262 struct md_attr *ma);
1263 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1264 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1268 extern struct ldlm_valblock_ops mdt_lvbo;
1269 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1270 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1271 struct ptlrpc_request *req, bool increase_only);
1273 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1274 int mdt_cos_is_enabled(struct mdt_device *);
1292 LPROC_MDT_SAMEDIR_RENAME,
1293 LPROC_MDT_CROSSDIR_RENAME,
1301 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1302 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset);
1303 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1304 void mdt_tunables_fini(struct mdt_device *mdt);
1306 /* lustre/mdt_mdt_lproc.c */
1307 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1309 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1310 struct mdt_device *mdt,
1311 struct ptlrpc_request *req,
1312 struct mdt_object *src, struct mdt_object *tgt,
1315 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1317 return mdt->mdt_lu_dev.ld_obd;
1320 extern const struct lu_device_operations mdt_lu_ops;
1322 static inline char *mdt_obd_name(struct mdt_device *mdt)
1324 return mdt->mdt_lu_dev.ld_obd->obd_name;
1327 int mds_mod_init(void);
1328 void mds_mod_exit(void);
1330 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1332 struct obd_export *exp = req->rq_export;
1335 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1336 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1343 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1344 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1346 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1347 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1348 struct niobuf_remote *rnb, int *nr_local,
1349 struct niobuf_local *lnb);
1351 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1352 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1353 struct niobuf_remote *rnb, int npages,
1354 struct niobuf_local *lnb, int old_rc);
1355 int mdt_punch_hdl(struct tgt_session_info *tsi);
1356 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1357 struct ldlm_lock **lockp, __u64 flags);
1358 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1359 struct ldlm_lock **lockp, __u64 flags);
1360 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1361 struct lustre_handle *lh);
1362 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1363 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1364 struct ldlm_resource *res, bool increase_only);
1365 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1366 bool increase_only);
1367 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1369 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1370 struct mdt_object *mo)
1372 return lu_object_is_dying(&mo->mot_header) &&
1373 S_ISREG(lu_object_attr(&mo->mot_obj));
1376 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1377 const struct lu_fid *fid, struct mdt_body *mb,
1379 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1380 const struct lu_fid *fid);
1381 void mdt_hp_brw(struct tgt_session_info *tsi);
1382 void mdt_hp_punch(struct tgt_session_info *tsi);
1383 int mdt_data_version_get(struct tgt_session_info *tsi);
1386 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1387 u64 want, bool conservative);
1388 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1390 static inline bool mdt_is_rootadmin(struct mdt_thread_info *info)
1392 struct lu_ucred *uc = NULL;
1396 if (info == NULL || info->mti_body == NULL)
1397 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1398 /* return true in case old client did not send mdt body */
1404 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1408 uc = mdt_ucred(info);
1409 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1410 md_capable(uc, CFS_CAP_SYS_ADMIN));
1412 mdt_exit_ucred(info);
1417 int mdt_reint_migrate(struct mdt_thread_info *info,
1418 struct mdt_lock_handle *unused);
1419 int mdt_dir_layout_update(struct mdt_thread_info *info);
1421 /* directory restripe */
1422 int mdt_restripe_internal(struct mdt_thread_info *info,
1423 struct mdt_object *parent,
1424 struct mdt_object *child,
1425 const struct lu_name *lname,
1426 struct lu_fid *tfid,
1427 struct md_op_spec *spec,
1428 struct md_attr *ma);
1429 int mdt_restriper_start(struct mdt_device *mdt);
1430 void mdt_restriper_stop(struct mdt_device *mdt);
1431 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1432 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1433 struct mdt_object *o);
1434 void mdt_restripe_update_add(struct mdt_thread_info *info,
1435 struct mdt_object *o);
1436 int mdt_is_remote_object(struct mdt_thread_info *info,
1437 struct mdt_object *parent,
1438 struct mdt_object *child);
1440 #endif /* _MDT_INTERNAL_H */