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 enum mdt_rename_type {
209 RENAME_SAMEDIR_SIZE = 0,
210 RENAME_CROSSDIR_SRC_SIZE,
211 RENAME_CROSSDIR_TGT_SIZE,
215 struct rename_stats {
217 struct obd_histogram rs_hist[RENAME_LAST];
220 /* split directory automatically when sub file count exceeds 50k */
221 #define DIR_SPLIT_COUNT_DEFAULT 50000
223 /* directory auto-split allocate delta new stripes each time */
224 #define DIR_SPLIT_DELTA_DEFAULT 4
226 struct mdt_dir_restriper {
227 struct lu_env mdr_env;
228 struct lu_context mdr_session;
229 struct task_struct *mdr_task;
230 /* lock for below fields */
232 /* auto split when plain dir/shard sub files exceed threshold */
233 u64 mdr_dir_split_count;
234 /* auto split growth delta */
235 u32 mdr_dir_split_delta;
236 /* directories to split */
237 struct list_head mdr_auto_splitting;
238 /* directories under which sub files are migrating */
239 struct list_head mdr_migrating;
240 /* directories waiting to update layout after migration */
241 struct list_head mdr_updating;
242 /* time to update directory layout after migration */
243 time64_t mdr_update_time;
244 /* lum used in split/migrate/layout_change */
245 union lmv_mds_md mdr_lmv;
246 /* page used in readdir */
247 struct page *mdr_page;
252 struct lu_device mdt_lu_dev;
253 struct seq_server_site mdt_seq_site;
254 /* DLM name-space for meta-data locks maintained by this server */
255 struct ldlm_namespace *mdt_namespace;
256 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
257 struct ptlrpc_client *mdt_ldlm_client;
258 /* underlying device */
259 struct obd_export *mdt_child_exp;
260 struct md_device *mdt_child;
261 struct dt_device *mdt_bottom;
262 struct obd_export *mdt_bottom_exp;
263 struct local_oid_storage *mdt_los;
265 struct lu_target mdt_lut;
267 * Options bit-fields.
270 unsigned int mo_user_xattr:1,
275 mo_migrate_hsm_allowed:1,
276 mo_enable_strict_som:1;
277 unsigned int mo_dom_lock;
279 /* mdt state flags */
280 unsigned long mdt_state;
282 /* transaction callbacks */
283 struct dt_txn_callback mdt_txn_cb;
285 /* these values should be updated from lov if necessary.
286 * or should be placed somewhere else. */
291 /* Max modify RPCs, replaces max_mod_rpcs_per_client module param */
292 unsigned int mdt_max_mod_rpcs_in_flight;
294 /* preferred BRW size, decided by storage type and capability */
297 struct upcall_cache *mdt_identity_cache;
299 unsigned int mdt_capa_conf:1,
300 /* Enable remote dir on non-MDT0 */
301 mdt_enable_dir_migration:1,
302 mdt_enable_dir_restripe:1,
303 mdt_enable_dir_auto_split:1,
304 mdt_enable_parallel_rename_dir:1,
305 mdt_enable_parallel_rename_file:1,
306 mdt_enable_remote_dir:1,
307 mdt_enable_remote_rename:1,
308 mdt_enable_striped_dir:1,
311 /* dir restripe migrate dirent only */
312 mdt_dir_restripe_nsonly:1;
314 /* user with gid can create remote/striped
315 * dir, and set default dir stripe */
316 gid_t mdt_enable_remote_dir_gid;
317 /* user with this gid can change projid */
318 gid_t mdt_enable_chprojid_gid;
320 /* lock for osfs and md_root */
323 /* statfs optimization: we cache a bit */
324 struct mdt_statfs_cache mdt_sum_osfs;
325 struct mdt_statfs_cache mdt_osfs;
328 struct root_squash_info mdt_squash;
330 struct rename_stats mdt_rename_stats;
331 struct lu_fid mdt_md_root_fid;
333 /* connection to quota master */
334 struct obd_export *mdt_qmt_exp;
335 /* quota master device associated with this MDT */
336 struct lu_device *mdt_qmt_dev;
338 struct coordinator mdt_coordinator;
340 /* inter-MDT connection count */
341 atomic_t mdt_mds_mds_conns;
343 /* MDT device async commit count, used for debug and sanity test */
344 atomic_t mdt_async_commit_count;
346 struct mdt_object *mdt_md_root;
348 struct mdt_dir_restriper mdt_restriper;
351 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
352 #define MDT_COS_DEFAULT (0)
354 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
357 struct lu_object_header mot_header;
358 struct lu_object mot_obj;
359 unsigned int mot_lov_created:1, /* lov object created */
360 mot_cache_attr:1, /* enable remote object
362 mot_restriping:1, /* dir restriping */
363 /* dir auto-split disabled */
364 mot_auto_split_disabled:1,
365 mot_lsom_inited:1; /* lsom was inited */
367 spinlock_t mot_write_lock;
368 /* Lock to protect create_data */
369 struct mutex mot_lov_mutex;
370 /* Lock to protect object's SOM update. */
371 struct mutex mot_som_mutex;
373 __u64 mot_lsom_blocks;
374 /* lock to protect read/write stages for Data-on-MDT files */
375 struct rw_semaphore mot_dom_sem;
376 /* Lock to protect lease open.
377 * Lease open acquires write lock; normal open acquires read lock */
378 struct rw_semaphore mot_open_sem;
379 atomic_t mot_lease_count;
380 atomic_t mot_open_count;
381 /* directory offset, used in sub file migration in dir restripe */
382 loff_t mot_restripe_offset;
383 /* link to mdt_restriper auto_splitting/migrating/updating */
384 struct list_head mot_restripe_linkage;
387 struct mdt_lock_handle {
388 /* Lock type, reg for cross-ref use or pdo lock. */
392 struct lustre_handle mlh_reg_lh;
393 enum ldlm_mode mlh_reg_mode;
397 struct lustre_handle mlh_pdo_lh;
398 enum ldlm_mode mlh_pdo_mode;
399 unsigned int mlh_pdo_hash;
401 /* Remote regular lock */
402 struct lustre_handle mlh_rreg_lh;
403 enum ldlm_mode mlh_rreg_mode;
407 MDT_LH_PARENT, /* parent lockh */
408 MDT_LH_CHILD, /* child lockh */
409 MDT_LH_OLD, /* old lockh for rename */
410 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
411 MDT_LH_NEW, /* new lockh for rename */
412 MDT_LH_RMT, /* used for return lh to caller */
413 MDT_LH_LOCAL, /* local lock never return to client */
414 MDT_LH_LOOKUP, /* lookup lock for source object in rename/migrate if
415 * it's remote object */
424 /* Special magical errno for communicaiton between mdt_reint_open()
425 * and mdt_intent_reint() which means return the lock to the client
426 * for subsequent cross ref open. Previously we used plain -EREMOTE
427 * but other functions called in that path might return it too and
428 * confuse us. This is not returned to the client. See LU-5370. */
429 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
431 struct mdt_reint_record {
432 enum mds_reint_op rr_opcode;
433 const struct lustre_handle *rr_open_handle;
434 const struct lustre_handle *rr_lease_handle;
435 const struct lu_fid *rr_fid1;
436 const struct lu_fid *rr_fid2;
437 struct lu_name rr_name;
438 struct lu_name rr_tgt_name;
445 enum mdt_reint_flag {
446 MRF_OPEN_TRUNC = BIT(0),
447 MRF_OPEN_RESEND = BIT(1),
451 * Common data shared by mdt-level handlers. This is allocated per-thread to
452 * reduce stack consumption.
454 struct mdt_thread_info {
457 * The following members will be filled explicitly
458 * with specific data in mdt_thread_info_init().
460 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
461 * request handling may migrate from one server thread to another.
463 struct req_capsule *mti_pill;
466 * SUB request pill in a batch request.
468 struct req_capsule mti_sub_pill;
470 /* although we have export in req, there are cases when it is not
471 * available, e.g. closing files upon export destroy */
472 struct obd_export *mti_exp;
474 * A couple of lock handles.
476 struct mdt_lock_handle mti_lh[MDT_LH_NR];
478 struct mdt_device *mti_mdt;
479 const struct lu_env *mti_env;
481 /* transaction number of current request */
486 * The following members will be filled expilictly
487 * with zero in mdt_thread_info_init(). These members may be used
494 struct md_attr mti_attr;
495 struct md_attr mti_attr2; /* mdt_lvb.c */
497 * Body for "habeo corpus" operations.
499 const struct mdt_body *mti_body;
501 * Host object. This is released at the end of mdt_handler().
503 struct mdt_object *mti_object;
505 * Lock request for "habeo clavis" operations.
507 const struct ldlm_request *mti_dlm_req;
509 __u32 mti_cross_ref:1,
510 /* big_lmm buffer was used and must be used in reply */
514 /* Batch processing environment */
517 /* opdata for mdt_reint_open(), has the same as
518 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
519 * value onto disk for recovery when mdt_trans_stop_cb() is called.
525 * The following members will be filled explicitly
526 * with zero in mdt_reint_unpack(), because they are only used
527 * by reint requests (including mdt_reint_open()).
531 * reint record. contains information for reint operations.
533 struct mdt_reint_record mti_rr;
535 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
537 * Operation specification (currently create and lookup)
539 struct md_op_spec mti_spec;
543 * The following members will _NOT_ be initialized at all.
544 * DO NOT expect them to contain any valid value.
545 * They should be initialized explicitly by the user themselves.
548 /* XXX: If something is in a union, make sure they do not conflict */
549 struct lu_fid mti_tmp_fid1;
550 struct lu_fid mti_tmp_fid2;
551 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
552 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
554 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
555 char ns_name[48];/* for mdt_init0() */
556 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
557 struct obd_statfs osfs; /* for mdt_statfs() */
559 /* for mdt_readpage() */
560 struct lu_rdpg mti_rdpg;
570 struct lustre_handle mti_open_handle;
572 struct lu_buf mti_buf;
573 struct lu_buf mti_big_buf;
575 /* Ops object filename */
576 struct lu_name mti_name;
577 char mti_filename[NAME_MAX + 1];
578 /* per-thread values, can be re-used, may be vmalloc'd */
583 /* should be enough to fit lustre_mdt_attrs */
584 char mti_xattr_buf[128];
585 struct ldlm_enqueue_info mti_einfo;
586 /* einfo used by mdt_remote_object_lock_try() */
587 struct ldlm_enqueue_info mti_remote_einfo;
588 struct tg_reply_data *mti_reply_data;
590 /* FLR: layout change API */
591 struct md_layout_change mti_mlc;
593 struct lu_seq_range mti_range;
596 extern struct lu_context_key mdt_thread_key;
598 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
600 return lu_env_info(env, &mdt_thread_key);
603 struct cdt_req_progress {
604 spinlock_t crp_lock; /**< protect tree */
605 struct interval_tree_root crp_root; /**< tree to track extent
610 struct cdt_agent_req {
611 struct hlist_node car_cookie_hash; /**< find req by cookie */
612 struct list_head car_request_list; /**< to chain all the req. */
613 atomic_t car_refcount; /**< reference counter */
614 __u64 car_flags; /**< request original flags */
615 struct obd_uuid car_uuid; /**< agent doing the req. */
616 __u32 car_archive_id; /**< archive id */
617 int car_canceled; /**< request was canceled */
618 time64_t car_req_start; /**< start time */
619 time64_t car_req_update; /**< last update time */
620 struct hsm_action_item *car_hai; /**< req. to the agent */
621 struct cdt_req_progress car_progress; /**< track data mvt
624 extern struct kmem_cache *mdt_hsm_car_kmem;
627 struct list_head ha_list; /**< to chain the agents */
628 struct obd_uuid ha_uuid; /**< agent uuid */
629 __u32 *ha_archive_id; /**< archive id */
630 int ha_archive_cnt; /**< number of archive entries
631 * 0 means any archive */
632 atomic_t ha_requests; /**< current request count */
633 atomic_t ha_success; /**< number of successful
635 atomic_t ha_failure; /**< number of failed actions */
638 struct cdt_restore_handle {
639 struct list_head crh_list; /**< to chain the handle */
640 struct lu_fid crh_fid; /**< fid of the object */
641 struct ldlm_extent crh_extent; /**< extent of the restore */
642 struct mdt_lock_handle crh_lh; /**< lock handle */
644 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
646 struct hsm_record_update {
648 enum agent_req_status status;
651 static inline const struct md_device_operations *
652 mdt_child_ops(struct mdt_device * m)
654 LASSERT(m->mdt_child);
655 return m->mdt_child->md_ops;
658 static inline struct md_object *mdt_object_child(struct mdt_object *o)
661 return lu2md(lu_object_next(&o->mot_obj));
664 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
666 return info->mti_pill ? info->mti_pill->rc_req : NULL;
669 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
671 LASSERT(info->mti_exp);
672 return exp_connect_flags(info->mti_exp);
675 static inline void mdt_object_get(const struct lu_env *env,
676 struct mdt_object *o)
679 lu_object_get(&o->mot_obj);
683 static inline void mdt_object_put(const struct lu_env *env,
684 struct mdt_object *o)
687 lu_object_put(env, &o->mot_obj);
691 static inline int mdt_object_exists(const struct mdt_object *o)
693 return lu_object_exists(&o->mot_obj);
696 static inline int mdt_object_remote(const struct mdt_object *o)
698 return lu_object_remote(&o->mot_obj);
701 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
703 return lu_object_fid(&o->mot_obj);
706 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
708 return mdt->mdt_lu_dev.ld_site;
711 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
713 return &mdt->mdt_seq_site;
716 static inline void mdt_export_evict(struct obd_export *exp)
718 class_fail_export(exp);
721 /* Here we use LVB_TYPE to check dne client, because it is
722 * also landed on 2.4. */
723 static inline bool mdt_is_dne_client(struct obd_export *exp)
725 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
728 static inline bool mdt_is_striped_client(struct obd_export *exp)
730 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
733 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
735 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
739 mdt_lmm_dom_entry_check(lmm, &dom_only);
743 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
745 return mdt_lmm_dom_entry_check(lmm, NULL);
748 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
750 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
752 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
753 le16_to_cpu(lcm->lcm_mirror_count) > 0;
756 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
758 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
759 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
760 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
765 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
767 struct lov_comp_md_v1 *comp_v1;
768 struct lov_mds_md *v1;
772 comp_v1 = (struct lov_comp_md_v1 *)lmm;
774 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
775 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
776 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
778 if (lmm_is_overstriping(v1))
785 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
787 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
788 return mdt_lmm_comp_overstriping(lmm);
790 return lmm_is_overstriping(lmm);
793 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
795 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
796 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
799 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
800 void mdt_set_disposition(struct mdt_thread_info *info,
801 struct ldlm_reply *rep, __u64 op_flag);
802 void mdt_clear_disposition(struct mdt_thread_info *info,
803 struct ldlm_reply *rep, __u64 op_flag);
805 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
806 const struct lu_name *lname);
808 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
809 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
811 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
812 struct mdt_lock_handle *lh);
814 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
815 struct mdt_lock_handle *lhc);
817 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *obj,
818 struct mdt_lock_handle *lh, __u64 ibits,
819 enum ldlm_mode mode, bool cos_incompat);
820 int mdt_parent_lock(struct mdt_thread_info *info, struct mdt_object *o,
821 struct mdt_lock_handle *lh, const struct lu_name *lname,
822 enum ldlm_mode mode, bool cos_incompat);
823 int mdt_object_stripes_lock(struct mdt_thread_info *info,
824 struct mdt_object *pobj, struct mdt_object *o,
825 struct mdt_lock_handle *lh,
826 struct ldlm_enqueue_info *einfo, __u64 ibits,
827 enum ldlm_mode mode, bool cos_incompat);
828 int mdt_object_check_lock(struct mdt_thread_info *info,
829 struct mdt_object *parent, struct mdt_object *child,
830 struct mdt_lock_handle *lh, __u64 ibits,
831 enum ldlm_mode mode, bool cos_incompat);
832 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
833 struct mdt_lock_handle *lh, __u64 *ibits,
834 __u64 trybits, enum ldlm_mode mode, bool cos_incompat);
836 /* below three lock functions are used internally */
837 int mdt_object_lock_internal(struct mdt_thread_info *info,
838 struct mdt_object *obj, const struct lu_fid *fid,
839 struct mdt_lock_handle *lh, __u64 *ibits,
840 __u64 trybits, bool cache, bool cos_incompat);
841 int mdt_object_pdo_lock(struct mdt_thread_info *info, struct mdt_object *obj,
842 struct mdt_lock_handle *lh, const struct lu_name *name,
843 enum ldlm_mode mode, bool pdo_lock, bool cos_incompat);
844 int mdt_object_lookup_lock(struct mdt_thread_info *info,
845 struct mdt_object *pobj, struct mdt_object *obj,
846 struct mdt_lock_handle *lh, enum ldlm_mode mode,
849 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
850 struct mdt_lock_handle *lh, int decref);
851 void mdt_object_stripes_unlock(struct mdt_thread_info *info,
852 struct mdt_object *o, struct mdt_lock_handle *lh,
853 struct ldlm_enqueue_info *einfo, int decref);
855 struct mdt_object *mdt_object_new(const struct lu_env *env,
857 const struct lu_fid *);
858 struct mdt_object *mdt_object_find(const struct lu_env *,
860 const struct lu_fid *);
861 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
862 const struct lu_fid *f,
863 struct mdt_lock_handle *lh,
864 __u64 ibits, enum ldlm_mode mode);
865 void mdt_object_unlock_put(struct mdt_thread_info *info,
866 struct mdt_object *o,
867 struct mdt_lock_handle *lh,
870 void mdt_client_compatibility(struct mdt_thread_info *info);
872 enum mdt_name_flags {
876 int mdt_name_unpack(struct req_capsule *pill,
877 const struct req_msg_field *field,
879 enum mdt_name_flags flags);
880 int mdt_close_unpack(struct mdt_thread_info *info);
881 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
882 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
883 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
884 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
885 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
886 struct mdt_object *o, struct lu_nodemap *nodemap);
888 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
889 const struct lu_attr *attr, const struct lu_fid *fid);
890 int mdt_pack_size2body(struct mdt_thread_info *info,
891 const struct lu_fid *fid, struct lustre_handle *lh);
892 int mdt_getxattr(struct mdt_thread_info *info);
893 int mdt_reint_setxattr(struct mdt_thread_info *info,
894 struct mdt_lock_handle *lh);
896 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
897 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
898 struct mdt_lock_handle *lhc);
900 extern void target_recovery_fini(struct obd_device *obd);
901 extern void target_recovery_init(struct lu_target *lut,
902 svc_handler_t handler);
904 int mdt_export_stats_init(struct obd_device *obd,
905 struct obd_export *exp,
908 int mdt_lock_new_child(struct mdt_thread_info *info,
909 struct mdt_object *o,
910 struct mdt_lock_handle *child_lockh);
911 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
912 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
913 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
914 const struct lustre_handle *open_handle,
916 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
917 struct mdt_object *pobj,
918 struct mdt_object *obj);
920 int mdt_get_info(struct tgt_session_info *tsi);
921 int mdt_attr_get_complex(struct mdt_thread_info *info,
922 struct mdt_object *o, struct md_attr *ma);
923 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
925 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
926 struct md_attr *ma, const char *name);
927 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
928 struct md_attr *ma, const char *name);
929 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
930 struct lu_fid *pfid);
931 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
932 struct lu_fid *pfid, struct lu_name *lname);
933 int mdt_write_get(struct mdt_object *o);
934 void mdt_write_put(struct mdt_object *o);
935 int mdt_write_read(struct mdt_object *o);
936 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
937 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
938 void mdt_mfd_free(struct mdt_file_data *mfd);
939 int mdt_close(struct tgt_session_info *tsi);
940 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
942 int mdt_fix_reply(struct mdt_thread_info *info);
943 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
945 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
946 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
947 struct mdt_lock_handle *lhc,
948 struct md_layout_change *spec);
949 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
950 struct mdt_object *parent, struct mdt_object *child);
951 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
953 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
954 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
955 const void *area, ssize_t len);
957 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
958 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
960 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
961 int mdt_check_ucred(struct mdt_thread_info *);
962 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
963 int mdt_init_ucred_reint(struct mdt_thread_info *);
964 void mdt_exit_ucred(struct mdt_thread_info *);
965 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
966 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
967 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
969 int mdt_lookup_version_check(struct mdt_thread_info *info,
970 struct mdt_object *p,
971 const struct lu_name *lname,
972 struct lu_fid *fid, int idx);
973 void mdt_thread_info_reset(struct mdt_thread_info *info);
974 void mdt_thread_info_init(struct ptlrpc_request *req,
975 struct mdt_thread_info *mti);
976 void mdt_thread_info_fini(struct mdt_thread_info *mti);
977 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
978 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
979 struct ldlm_lock *new_lock,
980 struct mdt_lock_handle *lh, __u64 flags);
981 int mdt_intent_lock_replace(struct mdt_thread_info *info,
982 struct ldlm_lock **lockp,
983 struct mdt_lock_handle *lh,
984 __u64 flags, int result);
986 int hsm_init_ucred(struct lu_ucred *uc);
987 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
988 const struct md_hsm *mh);
990 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
991 void *data, int flag);
992 int mdt_links_read(struct mdt_thread_info *info,
993 struct mdt_object *mdt_obj,
994 struct linkea_data *ldata);
995 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
996 struct mdt_body *repbody);
997 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
998 struct mdt_object *child);
999 int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
1000 struct mdt_object *child);
1002 static inline struct mdt_device *mdt_dev(struct lu_device *d)
1004 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
1007 static inline struct mdt_object *mdt_obj(struct lu_object *o)
1009 return container_of_safe(o, struct mdt_object, mot_obj);
1012 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
1014 struct lu_object *lo;
1015 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
1017 lo = lu_object_locate(mo->mot_obj.lo_header,
1018 mdt->mdt_bottom->dd_lu_dev.ld_type);
1023 static inline bool agent_req_in_final_state(enum agent_req_status ars)
1025 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
1026 (ars == ARS_CANCELED));
1029 /* mdt/mdt_identity.c */
1030 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1032 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1034 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1036 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1038 void mdt_flush_identity(struct upcall_cache *, int);
1040 __u32 mdt_identity_get_perm(struct md_identity *identity, struct lnet_nid *nid);
1042 /* mdt/mdt_recovery.c */
1043 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1045 /* mdt/mdt_batch.c */
1046 int mdt_batch(struct tgt_session_info *tsi);
1049 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1050 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1051 int mdt_hsm_action(struct tgt_session_info *tsi);
1052 int mdt_hsm_progress(struct tgt_session_info *tsi);
1053 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1054 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1055 int mdt_hsm_request(struct tgt_session_info *tsi);
1057 /* mdt/mdt_hsm_cdt_actions.c */
1058 extern const struct file_operations mdt_hsm_actions_fops;
1059 void dump_llog_agent_req_rec(const char *prefix,
1060 const struct llog_agent_req_rec *larr);
1061 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1062 llog_cb_t cb, void *data, u32 start_cat_idx,
1063 u32 start_rec_idx, int rw);
1064 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1065 __u32 archive_id, __u64 flags,
1066 struct hsm_action_item *hai);
1067 int mdt_agent_record_update(struct mdt_thread_info *mti,
1068 struct hsm_record_update *updates,
1069 unsigned int updates_count);
1070 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1072 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1073 u32 *cat_idt, u32 *rec_idx);
1074 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1076 /* mdt/mdt_hsm_cdt_agent.c */
1077 extern const struct file_operations mdt_hsm_agent_fops;
1078 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1079 const struct obd_uuid *uuid,
1080 int nr_archives, __u32 *archive_num);
1081 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1082 const struct obd_uuid *uuid,
1083 __u32 archive_mask);
1084 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1085 const struct obd_uuid *uuid);
1086 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1087 int succ_rq, int fail_rq, int new_rq,
1088 const struct obd_uuid *uuid);
1089 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1090 struct obd_uuid *uuid);
1091 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1093 /* mdt/mdt_hsm_cdt_client.c */
1094 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1095 struct hsm_action_list *hal);
1096 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1097 const struct lu_fid *fid,
1098 enum hsm_copytool_action *action,
1099 enum agent_req_status *status,
1100 struct hsm_extent *extent);
1101 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1102 const struct lu_fid *fid);
1103 /* mdt/mdt_hsm_cdt_requests.c */
1104 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1105 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1106 extern const struct file_operations mdt_hsm_active_requests_fops;
1107 void dump_requests(char *prefix, struct coordinator *cdt);
1108 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1109 struct obd_uuid *uuid,
1110 struct hsm_action_item *hai);
1111 void mdt_cdt_free_request(struct cdt_agent_req *car);
1112 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1113 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1114 void mdt_cdt_get_request(struct cdt_agent_req *car);
1115 void mdt_cdt_put_request(struct cdt_agent_req *car);
1116 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1117 const struct hsm_progress_kernel *pgs);
1118 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1119 /* mdt/mdt_coordinator.c */
1120 void mdt_hsm_dump_hal(int level, const char *prefix,
1121 struct hsm_action_list *hal);
1122 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1123 const struct lu_fid *fid,
1124 const struct hsm_extent *he);
1125 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1126 const struct lu_fid *fid);
1127 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1128 struct coordinator *cdt, const struct lu_fid *fid);
1129 /* coordinator management */
1130 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1131 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1132 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1135 * Signal the coordinator has work to do
1136 * \param cdt [IN] coordinator
1138 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1140 cdt->cdt_event = true;
1143 /* coordinator control sysfs interface */
1144 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1146 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1147 const char *buffer, size_t count);
1148 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1149 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1150 /* md_hsm helpers */
1151 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1152 const struct lu_fid *fid,
1153 struct md_hsm *hsm);
1154 /* actions/request helpers */
1155 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1156 struct hsm_action_list *hal, struct obd_uuid *uuid);
1157 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1158 u32 archive_id, u64 rq_flags,
1159 const struct md_hsm *hsm);
1160 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1161 struct hsm_progress_kernel *pgs);
1163 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1164 struct mdt_object *o, struct md_attr *ma);
1166 extern struct lu_context_key mdt_thread_key;
1168 /* debug issues helper starts here*/
1169 static inline int mdt_fail_write(const struct lu_env *env,
1170 struct dt_device *dd, int id)
1172 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1173 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1175 return dt_ro(env, dd);
1176 /* We set FAIL_ONCE because we never "un-fail" a device */
1182 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1184 return &req->rq_export->exp_mdt_data;
1187 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1189 return mdt_dev(exp->exp_obd->obd_lu_dev);
1192 static inline bool mdt_rdonly(struct obd_export *exp)
1194 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1195 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1196 mdt_exp2dev(exp)->mdt_readonly);
1199 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1200 struct mdt_lock_handle *lhc);
1201 static inline int mdt_check_resent(struct mdt_thread_info *info,
1202 mdt_reconstruct_t reconstruct,
1203 struct mdt_lock_handle *lhc)
1205 struct ptlrpc_request *req = mdt_info_req(info);
1209 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1210 OBD_ALLOC_PTR(info->mti_reply_data);
1211 if (info->mti_reply_data == NULL)
1214 rc = req_can_reconstruct(req, info->mti_reply_data);
1216 reconstruct(info, lhc);
1218 DEBUG_REQ(D_HA, req,
1219 "no reply data found for RESENT req, rc = %d",
1222 OBD_FREE_PTR(info->mti_reply_data);
1223 info->mti_reply_data = NULL;
1228 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1229 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1231 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1233 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1236 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1238 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1240 return -ELDLM_NO_LOCK_DATA;
1243 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1244 static inline int mdt_fid_lock(const struct lu_env *env,
1245 struct ldlm_namespace *ns,
1246 struct lustre_handle *lh, enum ldlm_mode mode,
1247 union ldlm_policy_data *policy,
1248 const struct ldlm_res_id *res_id,
1249 __u64 flags, const __u64 *client_cookie)
1252 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1254 LASSERT(ns != NULL);
1255 LASSERT(lh != NULL);
1257 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1258 mode, &flags, mdt_blocking_ast,
1259 ldlm_completion_ast,
1260 glimpse ? mdt_dom_glimpse_ast : NULL,
1261 NULL, 0, LVB_T_NONE, client_cookie, lh);
1262 return rc == ELDLM_OK ? 0 : -EIO;
1265 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1267 ldlm_lock_decref(lh, mode);
1270 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1272 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1275 extern mdl_mode_t mdt_mdl_lock_modes[];
1276 extern enum ldlm_mode mdt_dlm_lock_modes[];
1278 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1280 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1282 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1283 return mdt_mdl_lock_modes[mode];
1286 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1288 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1289 return mdt_dlm_lock_modes[mode];
1293 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1294 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1295 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1296 struct md_attr *ma);
1297 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1298 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1302 extern struct ldlm_valblock_ops mdt_lvbo;
1303 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1304 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1305 struct ptlrpc_request *req, bool increase_only);
1307 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1308 int mdt_cos_is_enabled(struct mdt_device *);
1326 LPROC_MDT_RENAME_SAMEDIR,
1327 LPROC_MDT_RENAME_PAR_FILE,
1328 LPROC_MDT_RENAME_PAR_DIR,
1329 LPROC_MDT_RENAME_CROSSDIR,
1332 LPROC_MDT_IO_READ_BYTES,
1333 LPROC_MDT_IO_WRITE_BYTES,
1336 LPROC_MDT_FALLOCATE,
1340 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1341 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset,
1342 enum lprocfs_counter_config cntr_umask);
1343 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1344 void mdt_tunables_fini(struct mdt_device *mdt);
1346 /* lustre/mdt_mdt_lproc.c */
1347 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1349 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1350 struct mdt_device *mdt,
1351 struct ptlrpc_request *req,
1352 struct mdt_object *src, struct mdt_object *tgt,
1353 enum mdt_stat_idx msi, s64 count);
1355 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1357 return mdt->mdt_lu_dev.ld_obd;
1360 extern const struct lu_device_operations mdt_lu_ops;
1362 static inline char *mdt_obd_name(struct mdt_device *mdt)
1364 return mdt->mdt_lu_dev.ld_obd->obd_name;
1367 int mds_mod_init(void);
1368 void mds_mod_exit(void);
1370 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1372 struct obd_export *exp = req->rq_export;
1375 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1376 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1383 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1384 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1386 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1387 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1388 struct niobuf_remote *rnb, int *nr_local,
1389 struct niobuf_local *lnb);
1391 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1392 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1393 struct niobuf_remote *rnb, int npages,
1394 struct niobuf_local *lnb, int old_rc, int nob,
1396 int mdt_punch_hdl(struct tgt_session_info *tsi);
1397 int mdt_fallocate_hdl(struct tgt_session_info *tsi);
1398 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1399 struct ldlm_lock **lockp, __u64 flags);
1400 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1401 struct ldlm_lock **lockp, __u64 flags);
1402 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1403 struct lustre_handle *lh);
1404 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1405 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1406 struct ldlm_resource *res, bool increase_only);
1407 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1408 struct obdo *oa, bool increase_only);
1409 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1411 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1412 struct mdt_object *mo)
1414 return lu_object_is_dying(&mo->mot_header) &&
1415 S_ISREG(lu_object_attr(&mo->mot_obj));
1418 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1419 const struct lu_fid *fid, struct mdt_body *mb,
1421 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1422 const struct lu_fid *fid);
1423 void mdt_hp_brw(struct tgt_session_info *tsi);
1424 void mdt_hp_punch(struct tgt_session_info *tsi);
1425 int mdt_data_version_get(struct tgt_session_info *tsi);
1426 int mdt_io_set_info(struct tgt_session_info *tsi);
1429 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1430 u64 want, bool conservative);
1431 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1433 static inline bool mdt_changelog_allow(struct mdt_thread_info *info)
1435 struct lu_ucred *uc = NULL;
1439 if (info == NULL || info->mti_body == NULL)
1440 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1441 /* return true in case old client did not send mdt body */
1447 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1451 uc = mdt_ucred(info);
1452 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1453 cap_raised(uc->uc_cap, CAP_SYS_ADMIN) &&
1454 uc->uc_rbac_chlg_ops);
1456 mdt_exit_ucred(info);
1461 /* We forbid operations from encryption-unaware clients if they try to
1462 * manipulate encrypted files/directories.
1464 static inline int mdt_check_enc(struct mdt_thread_info *info,
1465 struct mdt_object *obj)
1467 struct obd_export *exp;
1468 struct md_attr ma = { 0 };
1471 if (!mdt_info_req(info))
1472 /* no req, so cannot tell about client connection flags:
1476 exp = mdt_info_req(info)->rq_export;
1477 if (exp_connect_encrypt(exp))
1478 /* client is encryption aware: fine */
1481 ma.ma_need = MA_INODE;
1482 mdt_attr_get_complex(info, obj, &ma);
1483 if (ma.ma_attr.la_valid & LA_FLAGS &&
1484 ma.ma_attr.la_flags & LUSTRE_ENCRYPT_FL)
1488 CDEBUG(D_SEC, "%s: operation on encrypted "DFID
1489 " from encryption-unaware client %s: %d\n",
1490 mdt_obd_name(info->mti_mdt),
1491 PFID(lu_object_fid(&obj->mot_obj)),
1492 libcfs_nidstr(&exp->exp_connection->c_peer.nid), rc);
1497 int mdt_fids_different_target(struct mdt_thread_info *info,
1498 const struct lu_fid *fid1,
1499 const struct lu_fid *fid2);
1501 int mdt_reint_migrate(struct mdt_thread_info *info,
1502 struct mdt_lock_handle *unused);
1503 int mdt_dir_layout_update(struct mdt_thread_info *info);
1505 /* directory restripe */
1506 int mdt_restripe_internal(struct mdt_thread_info *info,
1507 struct mdt_object *parent,
1508 struct mdt_object *child,
1509 const struct lu_name *lname,
1510 struct lu_fid *tfid,
1511 struct md_op_spec *spec,
1512 struct md_attr *ma);
1513 int mdt_restriper_start(struct mdt_device *mdt);
1514 void mdt_restriper_stop(struct mdt_device *mdt);
1515 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1516 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1517 struct mdt_object *o);
1518 void mdt_restripe_update_add(struct mdt_thread_info *info,
1519 struct mdt_object *o);
1520 int mdt_is_remote_object(struct mdt_thread_info *info,
1521 struct mdt_object *parent,
1522 struct mdt_object *child);
1524 static unsigned int max_mod_rpcs_per_client = OBD_MAX_RIF_DEFAULT;
1525 #if OBD_OCD_VERSION(3, 0, 53, 0) > LUSTRE_VERSION_CODE
1526 static inline bool mdt_max_mod_rpcs_changed(struct mdt_device *mdt)
1528 return max_mod_rpcs_per_client != OBD_MAX_RIF_DEFAULT &&
1529 mdt->mdt_max_mod_rpcs_in_flight == OBD_MAX_RIF_DEFAULT;
1532 #define mdt_max_mod_rpcs_changed(mdt) false
1535 #endif /* _MDT_INTERNAL_H */