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 /* preferred BRW size, decided by storage type and capability */
294 struct upcall_cache *mdt_identity_cache;
296 unsigned int mdt_capa_conf:1,
297 /* Enable remote dir on non-MDT0 */
298 mdt_enable_dir_migration:1,
299 mdt_enable_dir_restripe:1,
300 mdt_enable_dir_auto_split:1,
301 mdt_enable_parallel_rename_dir:1,
302 mdt_enable_parallel_rename_file:1,
303 mdt_enable_remote_dir:1,
304 mdt_enable_remote_rename:1,
305 mdt_enable_striped_dir:1,
308 /* dir restripe migrate dirent only */
309 mdt_dir_restripe_nsonly:1,
310 /* subdirectory mount of remote dir */
311 mdt_enable_remote_subdir_mount:1;
313 /* user with gid can create remote/striped
314 * dir, and set default dir stripe */
315 gid_t mdt_enable_remote_dir_gid;
316 /* user with this gid can change projid */
317 gid_t mdt_enable_chprojid_gid;
319 /* lock for osfs and md_root */
322 /* statfs optimization: we cache a bit */
323 struct mdt_statfs_cache mdt_sum_osfs;
324 struct mdt_statfs_cache mdt_osfs;
327 struct root_squash_info mdt_squash;
329 struct rename_stats mdt_rename_stats;
330 struct lu_fid mdt_md_root_fid;
332 /* connection to quota master */
333 struct obd_export *mdt_qmt_exp;
334 /* quota master device associated with this MDT */
335 struct lu_device *mdt_qmt_dev;
337 struct coordinator mdt_coordinator;
339 /* inter-MDT connection count */
340 atomic_t mdt_mds_mds_conns;
342 /* MDT device async commit count, used for debug and sanity test */
343 atomic_t mdt_async_commit_count;
345 struct mdt_object *mdt_md_root;
347 struct mdt_dir_restriper mdt_restriper;
350 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
351 #define MDT_COS_DEFAULT (0)
353 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
356 struct lu_object_header mot_header;
357 struct lu_object mot_obj;
358 unsigned int mot_lov_created:1, /* lov object created */
359 mot_cache_attr:1, /* enable remote object
361 mot_restriping:1, /* dir restriping */
362 /* dir auto-split disabled */
363 mot_auto_split_disabled:1,
364 mot_lsom_inited:1; /* lsom was inited */
366 spinlock_t mot_write_lock;
367 /* Lock to protect create_data */
368 struct mutex mot_lov_mutex;
369 /* Lock to protect object's SOM update. */
370 struct mutex mot_som_mutex;
372 __u64 mot_lsom_blocks;
373 /* lock to protect read/write stages for Data-on-MDT files */
374 struct rw_semaphore mot_dom_sem;
375 /* Lock to protect lease open.
376 * Lease open acquires write lock; normal open acquires read lock */
377 struct rw_semaphore mot_open_sem;
378 atomic_t mot_lease_count;
379 atomic_t mot_open_count;
380 /* directory offset, used in sub file migration in dir restripe */
381 loff_t mot_restripe_offset;
382 /* link to mdt_restriper auto_splitting/migrating/updating */
383 struct list_head mot_restripe_linkage;
386 struct mdt_lock_handle {
387 /* Lock type, reg for cross-ref use or pdo lock. */
391 struct lustre_handle mlh_reg_lh;
392 enum ldlm_mode mlh_reg_mode;
396 struct lustre_handle mlh_pdo_lh;
397 enum ldlm_mode mlh_pdo_mode;
398 unsigned int mlh_pdo_hash;
400 /* Remote regular lock */
401 struct lustre_handle mlh_rreg_lh;
402 enum ldlm_mode mlh_rreg_mode;
406 MDT_LH_PARENT, /* parent lockh */
407 MDT_LH_CHILD, /* child lockh */
408 MDT_LH_OLD, /* old lockh for rename */
409 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
410 MDT_LH_NEW, /* new lockh for rename */
411 MDT_LH_RMT, /* used for return lh to caller */
412 MDT_LH_LOCAL, /* local lock never return to client */
421 /* Special magical errno for communicaiton between mdt_reint_open()
422 * and mdt_intent_reint() which means return the lock to the client
423 * for subsequent cross ref open. Previously we used plain -EREMOTE
424 * but other functions called in that path might return it too and
425 * confuse us. This is not returned to the client. See LU-5370. */
426 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
428 struct mdt_reint_record {
429 enum mds_reint_op rr_opcode;
430 const struct lustre_handle *rr_open_handle;
431 const struct lustre_handle *rr_lease_handle;
432 const struct lu_fid *rr_fid1;
433 const struct lu_fid *rr_fid2;
434 struct lu_name rr_name;
435 struct lu_name rr_tgt_name;
442 enum mdt_reint_flag {
443 MRF_OPEN_TRUNC = BIT(0),
444 MRF_OPEN_RESEND = BIT(1),
448 * Common data shared by mdt-level handlers. This is allocated per-thread to
449 * reduce stack consumption.
451 struct mdt_thread_info {
454 * The following members will be filled explicitly
455 * with specific data in mdt_thread_info_init().
457 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
458 * request handling may migrate from one server thread to another.
460 struct req_capsule *mti_pill;
462 /* although we have export in req, there are cases when it is not
463 * available, e.g. closing files upon export destroy */
464 struct obd_export *mti_exp;
466 * A couple of lock handles.
468 struct mdt_lock_handle mti_lh[MDT_LH_NR];
470 struct mdt_device *mti_mdt;
471 const struct lu_env *mti_env;
473 /* transaction number of current request */
478 * The following members will be filled expilictly
479 * with zero in mdt_thread_info_init(). These members may be used
486 struct md_attr mti_attr;
487 struct md_attr mti_attr2; /* mdt_lvb.c */
489 * Body for "habeo corpus" operations.
491 const struct mdt_body *mti_body;
493 * Host object. This is released at the end of mdt_handler().
495 struct mdt_object *mti_object;
497 * Lock request for "habeo clavis" operations.
499 const struct ldlm_request *mti_dlm_req;
501 __u32 mti_has_trans:1, /* has txn already? */
503 /* big_lmm buffer was used and must be used in reply */
508 /* opdata for mdt_reint_open(), has the same as
509 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
510 * value onto disk for recovery when mdt_trans_stop_cb() is called.
516 * The following members will be filled explicitly
517 * with zero in mdt_reint_unpack(), because they are only used
518 * by reint requests (including mdt_reint_open()).
522 * reint record. contains information for reint operations.
524 struct mdt_reint_record mti_rr;
526 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
528 * Operation specification (currently create and lookup)
530 struct md_op_spec mti_spec;
534 * The following members will _NOT_ be initialized at all.
535 * DO NOT expect them to contain any valid value.
536 * They should be initialized explicitly by the user themselves.
539 /* XXX: If something is in a union, make sure they do not conflict */
540 struct lu_fid mti_tmp_fid1;
541 struct lu_fid mti_tmp_fid2;
542 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
543 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
545 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
546 char ns_name[48];/* for mdt_init0() */
547 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
548 struct obd_statfs osfs; /* for mdt_statfs() */
550 /* for mdt_readpage() */
551 struct lu_rdpg mti_rdpg;
561 struct lustre_handle mti_open_handle;
563 struct lu_buf mti_buf;
564 struct lu_buf mti_big_buf;
566 /* Ops object filename */
567 struct lu_name mti_name;
568 char mti_filename[NAME_MAX + 1];
569 /* per-thread values, can be re-used, may be vmalloc'd */
574 /* should be enough to fit lustre_mdt_attrs */
575 char mti_xattr_buf[128];
576 struct ldlm_enqueue_info mti_einfo[2];
577 /* einfo used by mdt_remote_object_lock_try() */
578 struct ldlm_enqueue_info mti_remote_einfo;
579 struct tg_reply_data *mti_reply_data;
581 /* FLR: layout change API */
582 struct md_layout_change mti_mlc;
584 struct lu_seq_range mti_range;
587 extern struct lu_context_key mdt_thread_key;
589 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
591 return lu_env_info(env, &mdt_thread_key);
594 struct cdt_req_progress {
595 spinlock_t crp_lock; /**< protect tree */
596 struct interval_tree_root crp_root; /**< tree to track extent
601 struct cdt_agent_req {
602 struct hlist_node car_cookie_hash; /**< find req by cookie */
603 struct list_head car_request_list; /**< to chain all the req. */
604 atomic_t car_refcount; /**< reference counter */
605 __u64 car_flags; /**< request original flags */
606 struct obd_uuid car_uuid; /**< agent doing the req. */
607 __u32 car_archive_id; /**< archive id */
608 int car_canceled; /**< request was canceled */
609 time64_t car_req_start; /**< start time */
610 time64_t car_req_update; /**< last update time */
611 struct hsm_action_item *car_hai; /**< req. to the agent */
612 struct cdt_req_progress car_progress; /**< track data mvt
615 extern struct kmem_cache *mdt_hsm_car_kmem;
618 struct list_head ha_list; /**< to chain the agents */
619 struct obd_uuid ha_uuid; /**< agent uuid */
620 __u32 *ha_archive_id; /**< archive id */
621 int ha_archive_cnt; /**< number of archive entries
622 * 0 means any archive */
623 atomic_t ha_requests; /**< current request count */
624 atomic_t ha_success; /**< number of successful
626 atomic_t ha_failure; /**< number of failed actions */
629 struct cdt_restore_handle {
630 struct list_head crh_list; /**< to chain the handle */
631 struct lu_fid crh_fid; /**< fid of the object */
632 struct ldlm_extent crh_extent; /**< extent of the restore */
633 struct mdt_lock_handle crh_lh; /**< lock handle */
635 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
637 struct hsm_record_update {
639 enum agent_req_status status;
642 static inline const struct md_device_operations *
643 mdt_child_ops(struct mdt_device * m)
645 LASSERT(m->mdt_child);
646 return m->mdt_child->md_ops;
649 static inline struct md_object *mdt_object_child(struct mdt_object *o)
652 return lu2md(lu_object_next(&o->mot_obj));
655 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
657 return info->mti_pill ? info->mti_pill->rc_req : NULL;
660 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
662 LASSERT(info->mti_exp);
663 return exp_connect_flags(info->mti_exp);
666 static inline void mdt_object_get(const struct lu_env *env,
667 struct mdt_object *o)
670 lu_object_get(&o->mot_obj);
674 static inline void mdt_object_put(const struct lu_env *env,
675 struct mdt_object *o)
678 lu_object_put(env, &o->mot_obj);
682 static inline int mdt_object_exists(const struct mdt_object *o)
684 return lu_object_exists(&o->mot_obj);
687 static inline int mdt_object_remote(const struct mdt_object *o)
689 return lu_object_remote(&o->mot_obj);
692 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
694 return lu_object_fid(&o->mot_obj);
697 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
699 return mdt->mdt_lu_dev.ld_site;
702 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
704 return &mdt->mdt_seq_site;
707 static inline void mdt_export_evict(struct obd_export *exp)
709 class_fail_export(exp);
712 /* Here we use LVB_TYPE to check dne client, because it is
713 * also landed on 2.4. */
714 static inline bool mdt_is_dne_client(struct obd_export *exp)
716 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
719 static inline bool mdt_is_striped_client(struct obd_export *exp)
721 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
724 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
726 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
730 mdt_lmm_dom_entry_check(lmm, &dom_only);
734 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
736 return mdt_lmm_dom_entry_check(lmm, NULL);
739 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
741 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
743 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
744 le16_to_cpu(lcm->lcm_mirror_count) > 0;
747 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
749 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
750 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
751 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
756 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
758 struct lov_comp_md_v1 *comp_v1;
759 struct lov_mds_md *v1;
763 comp_v1 = (struct lov_comp_md_v1 *)lmm;
765 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
766 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
767 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
769 if (lmm_is_overstriping(v1))
776 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
778 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
779 return mdt_lmm_comp_overstriping(lmm);
781 return lmm_is_overstriping(lmm);
784 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
786 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
787 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
790 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
791 void mdt_set_disposition(struct mdt_thread_info *info,
792 struct ldlm_reply *rep, __u64 op_flag);
793 void mdt_clear_disposition(struct mdt_thread_info *info,
794 struct ldlm_reply *rep, __u64 op_flag);
796 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
797 const struct lu_name *lname);
799 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
800 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
802 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
803 struct mdt_lock_handle *lh);
805 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
806 struct mdt_lock_handle *lhc);
808 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
809 struct mdt_lock_handle *lh, __u64 ibits);
811 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
812 struct mdt_lock_handle *lh, __u64 ibits,
815 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
816 struct mdt_lock_handle *lh, __u64 *ibits,
817 __u64 trybits, bool cos_incompat);
819 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
820 struct mdt_lock_handle *lh, int decref);
821 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
822 enum ldlm_mode mode, int decref);
824 struct mdt_object *mdt_object_new(const struct lu_env *env,
826 const struct lu_fid *);
827 struct mdt_object *mdt_object_find(const struct lu_env *,
829 const struct lu_fid *);
830 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
831 const struct lu_fid *,
832 struct mdt_lock_handle *,
834 void mdt_object_unlock_put(struct mdt_thread_info *,
836 struct mdt_lock_handle *,
839 void mdt_client_compatibility(struct mdt_thread_info *info);
841 int mdt_remote_object_lock(struct mdt_thread_info *mti,
842 struct mdt_object *o, const struct lu_fid *fid,
843 struct lustre_handle *lh,
844 enum ldlm_mode mode, __u64 ibits, bool cache);
845 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
846 struct mdt_lock_handle *lh, __u64 *ibits,
847 __u64 trybits, bool cos_incompat);
848 int mdt_reint_striped_lock(struct mdt_thread_info *info,
849 struct mdt_object *o,
850 struct mdt_lock_handle *lh,
852 struct ldlm_enqueue_info *einfo,
854 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
855 struct mdt_object *o,
856 struct mdt_lock_handle *lh,
857 struct ldlm_enqueue_info *einfo, int decref);
859 enum mdt_name_flags {
863 int mdt_name_unpack(struct req_capsule *pill,
864 const struct req_msg_field *field,
866 enum mdt_name_flags flags);
867 int mdt_close_unpack(struct mdt_thread_info *info);
868 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
869 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
870 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
871 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
872 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
873 struct mdt_object *o, struct lu_nodemap *nodemap);
875 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
876 const struct lu_attr *attr, const struct lu_fid *fid);
877 int mdt_pack_size2body(struct mdt_thread_info *info,
878 const struct lu_fid *fid, struct lustre_handle *lh);
879 int mdt_getxattr(struct mdt_thread_info *info);
880 int mdt_reint_setxattr(struct mdt_thread_info *info,
881 struct mdt_lock_handle *lh);
883 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
884 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
886 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
887 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
888 struct mdt_lock_handle *lhc);
890 extern void target_recovery_fini(struct obd_device *obd);
891 extern void target_recovery_init(struct lu_target *lut,
892 svc_handler_t handler);
893 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
894 struct obd_device *, struct lustre_sb_info *lsi);
895 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
897 int mdt_export_stats_init(struct obd_device *obd,
898 struct obd_export *exp,
901 int mdt_lock_new_child(struct mdt_thread_info *info,
902 struct mdt_object *o,
903 struct mdt_lock_handle *child_lockh);
904 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
905 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
906 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
907 const struct lustre_handle *open_handle,
909 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
910 struct mdt_object *pobj,
911 struct mdt_object *obj);
913 int mdt_get_info(struct tgt_session_info *tsi);
914 int mdt_attr_get_complex(struct mdt_thread_info *info,
915 struct mdt_object *o, struct md_attr *ma);
916 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
918 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
919 struct md_attr *ma, const char *name);
920 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
921 struct md_attr *ma, const char *name);
922 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
923 struct lu_fid *pfid);
924 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
925 struct lu_fid *pfid, struct lu_name *lname);
926 int mdt_write_get(struct mdt_object *o);
927 void mdt_write_put(struct mdt_object *o);
928 int mdt_write_read(struct mdt_object *o);
929 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
930 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
931 void mdt_mfd_free(struct mdt_file_data *mfd);
932 int mdt_close(struct tgt_session_info *tsi);
933 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
935 int mdt_fix_reply(struct mdt_thread_info *info);
936 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
938 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
939 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
940 struct mdt_lock_handle *lhc,
941 struct md_layout_change *spec);
942 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
943 struct mdt_object *parent, struct mdt_object *child);
944 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
946 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
947 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
948 const void *area, ssize_t len);
950 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
951 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
953 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
954 int mdt_check_ucred(struct mdt_thread_info *);
955 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
956 int mdt_init_ucred_reint(struct mdt_thread_info *);
957 void mdt_exit_ucred(struct mdt_thread_info *);
958 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
959 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
960 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
962 int mdt_lookup_version_check(struct mdt_thread_info *info,
963 struct mdt_object *p,
964 const struct lu_name *lname,
965 struct lu_fid *fid, int idx);
966 void mdt_thread_info_init(struct ptlrpc_request *req,
967 struct mdt_thread_info *mti);
968 void mdt_thread_info_fini(struct mdt_thread_info *mti);
969 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
970 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
971 struct ldlm_lock *new_lock,
972 struct mdt_lock_handle *lh, __u64 flags);
973 int mdt_intent_lock_replace(struct mdt_thread_info *info,
974 struct ldlm_lock **lockp,
975 struct mdt_lock_handle *lh,
976 __u64 flags, int result);
978 int hsm_init_ucred(struct lu_ucred *uc);
979 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
980 const struct md_hsm *mh);
982 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
983 void *data, int flag);
984 int mdt_links_read(struct mdt_thread_info *info,
985 struct mdt_object *mdt_obj,
986 struct linkea_data *ldata);
987 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
988 struct mdt_body *repbody);
989 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
990 struct mdt_object *child);
991 int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
992 struct mdt_object *child);
994 static inline struct mdt_device *mdt_dev(struct lu_device *d)
996 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
999 static inline struct mdt_object *mdt_obj(struct lu_object *o)
1001 return container_of_safe(o, struct mdt_object, mot_obj);
1004 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
1006 struct lu_object *lo;
1007 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
1009 lo = lu_object_locate(mo->mot_obj.lo_header,
1010 mdt->mdt_bottom->dd_lu_dev.ld_type);
1015 static inline bool agent_req_in_final_state(enum agent_req_status ars)
1017 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
1018 (ars == ARS_CANCELED));
1021 /* mdt/mdt_identity.c */
1022 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1024 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1026 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1028 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1030 void mdt_flush_identity(struct upcall_cache *, int);
1032 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
1034 /* mdt/mdt_recovery.c */
1035 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1038 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1039 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1040 int mdt_hsm_action(struct tgt_session_info *tsi);
1041 int mdt_hsm_progress(struct tgt_session_info *tsi);
1042 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1043 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1044 int mdt_hsm_request(struct tgt_session_info *tsi);
1046 /* mdt/mdt_hsm_cdt_actions.c */
1047 extern const struct file_operations mdt_hsm_actions_fops;
1048 void dump_llog_agent_req_rec(const char *prefix,
1049 const struct llog_agent_req_rec *larr);
1050 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1051 llog_cb_t cb, void *data, u32 start_cat_idx,
1052 u32 start_rec_idx, int rw);
1053 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1054 __u32 archive_id, __u64 flags,
1055 struct hsm_action_item *hai);
1056 int mdt_agent_record_update(struct mdt_thread_info *mti,
1057 struct hsm_record_update *updates,
1058 unsigned int updates_count);
1059 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1061 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1062 u32 *cat_idt, u32 *rec_idx);
1063 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1065 /* mdt/mdt_hsm_cdt_agent.c */
1066 extern const struct file_operations mdt_hsm_agent_fops;
1067 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1068 const struct obd_uuid *uuid,
1069 int nr_archives, __u32 *archive_num);
1070 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1071 const struct obd_uuid *uuid,
1072 __u32 archive_mask);
1073 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1074 const struct obd_uuid *uuid);
1075 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1076 int succ_rq, int fail_rq, int new_rq,
1077 const struct obd_uuid *uuid);
1078 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1079 struct obd_uuid *uuid);
1080 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1082 /* mdt/mdt_hsm_cdt_client.c */
1083 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1084 struct hsm_action_list *hal);
1085 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1086 const struct lu_fid *fid,
1087 enum hsm_copytool_action *action,
1088 enum agent_req_status *status,
1089 struct hsm_extent *extent);
1090 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1091 const struct lu_fid *fid);
1092 /* mdt/mdt_hsm_cdt_requests.c */
1093 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1094 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1095 extern const struct file_operations mdt_hsm_active_requests_fops;
1096 void dump_requests(char *prefix, struct coordinator *cdt);
1097 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1098 struct obd_uuid *uuid,
1099 struct hsm_action_item *hai);
1100 void mdt_cdt_free_request(struct cdt_agent_req *car);
1101 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1102 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1103 void mdt_cdt_get_request(struct cdt_agent_req *car);
1104 void mdt_cdt_put_request(struct cdt_agent_req *car);
1105 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1106 const struct hsm_progress_kernel *pgs);
1107 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1108 /* mdt/mdt_coordinator.c */
1109 void mdt_hsm_dump_hal(int level, const char *prefix,
1110 struct hsm_action_list *hal);
1111 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1112 const struct lu_fid *fid,
1113 const struct hsm_extent *he);
1114 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1115 const struct lu_fid *fid);
1116 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1117 struct coordinator *cdt, const struct lu_fid *fid);
1118 /* coordinator management */
1119 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1120 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1121 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1124 * Signal the coordinator has work to do
1125 * \param cdt [IN] coordinator
1127 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1129 cdt->cdt_event = true;
1132 /* coordinator control sysfs interface */
1133 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1135 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1136 const char *buffer, size_t count);
1137 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1138 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1139 /* md_hsm helpers */
1140 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1141 const struct lu_fid *fid,
1142 struct md_hsm *hsm);
1143 /* actions/request helpers */
1144 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1145 struct hsm_action_list *hal, struct obd_uuid *uuid);
1146 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1147 u32 archive_id, u64 rq_flags,
1148 const struct md_hsm *hsm);
1149 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1150 struct hsm_progress_kernel *pgs);
1152 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1153 struct mdt_object *o, struct md_attr *ma);
1155 extern struct lu_context_key mdt_thread_key;
1157 /* debug issues helper starts here*/
1158 static inline int mdt_fail_write(const struct lu_env *env,
1159 struct dt_device *dd, int id)
1161 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1162 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1164 return dt_ro(env, dd);
1165 /* We set FAIL_ONCE because we never "un-fail" a device */
1171 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1173 return &req->rq_export->exp_mdt_data;
1176 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1178 return mdt_dev(exp->exp_obd->obd_lu_dev);
1181 static inline bool mdt_rdonly(struct obd_export *exp)
1183 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1184 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1185 mdt_exp2dev(exp)->mdt_readonly);
1188 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1189 struct mdt_lock_handle *lhc);
1190 static inline int mdt_check_resent(struct mdt_thread_info *info,
1191 mdt_reconstruct_t reconstruct,
1192 struct mdt_lock_handle *lhc)
1194 struct ptlrpc_request *req = mdt_info_req(info);
1198 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1199 OBD_ALLOC_PTR(info->mti_reply_data);
1200 if (info->mti_reply_data == NULL)
1203 rc = req_can_reconstruct(req, info->mti_reply_data);
1205 reconstruct(info, lhc);
1207 DEBUG_REQ(D_HA, req,
1208 "no reply data found for RESENT req, rc = %d",
1211 OBD_FREE_PTR(info->mti_reply_data);
1212 info->mti_reply_data = NULL;
1217 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1218 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1220 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1222 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1225 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1227 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1229 return -ELDLM_NO_LOCK_DATA;
1232 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1233 static inline int mdt_fid_lock(const struct lu_env *env,
1234 struct ldlm_namespace *ns,
1235 struct lustre_handle *lh, enum ldlm_mode mode,
1236 union ldlm_policy_data *policy,
1237 const struct ldlm_res_id *res_id,
1238 __u64 flags, const __u64 *client_cookie)
1241 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1243 LASSERT(ns != NULL);
1244 LASSERT(lh != NULL);
1246 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1247 mode, &flags, mdt_blocking_ast,
1248 ldlm_completion_ast,
1249 glimpse ? mdt_dom_glimpse_ast : NULL,
1250 NULL, 0, LVB_T_NONE, client_cookie, lh);
1251 return rc == ELDLM_OK ? 0 : -EIO;
1254 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1256 ldlm_lock_decref(lh, mode);
1259 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1261 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1264 extern mdl_mode_t mdt_mdl_lock_modes[];
1265 extern enum ldlm_mode mdt_dlm_lock_modes[];
1267 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1269 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1271 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1272 return mdt_mdl_lock_modes[mode];
1275 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1277 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1278 return mdt_dlm_lock_modes[mode];
1282 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1283 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1284 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1285 struct md_attr *ma);
1286 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1287 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1291 extern struct ldlm_valblock_ops mdt_lvbo;
1292 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1293 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1294 struct ptlrpc_request *req, bool increase_only);
1296 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1297 int mdt_cos_is_enabled(struct mdt_device *);
1315 LPROC_MDT_RENAME_SAMEDIR,
1316 LPROC_MDT_RENAME_PAR_FILE,
1317 LPROC_MDT_RENAME_PAR_DIR,
1318 LPROC_MDT_RENAME_CROSSDIR,
1321 LPROC_MDT_IO_READ_BYTES,
1322 LPROC_MDT_IO_WRITE_BYTES,
1325 LPROC_MDT_FALLOCATE,
1329 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1330 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset);
1331 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1332 void mdt_tunables_fini(struct mdt_device *mdt);
1334 /* lustre/mdt_mdt_lproc.c */
1335 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1337 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1338 struct mdt_device *mdt,
1339 struct ptlrpc_request *req,
1340 struct mdt_object *src, struct mdt_object *tgt,
1341 enum mdt_stat_idx msi, s64 count);
1343 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1345 return mdt->mdt_lu_dev.ld_obd;
1348 extern const struct lu_device_operations mdt_lu_ops;
1350 static inline char *mdt_obd_name(struct mdt_device *mdt)
1352 return mdt->mdt_lu_dev.ld_obd->obd_name;
1355 int mds_mod_init(void);
1356 void mds_mod_exit(void);
1358 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1360 struct obd_export *exp = req->rq_export;
1363 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1364 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1371 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1372 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1374 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1375 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1376 struct niobuf_remote *rnb, int *nr_local,
1377 struct niobuf_local *lnb);
1379 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1380 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1381 struct niobuf_remote *rnb, int npages,
1382 struct niobuf_local *lnb, int old_rc, int nob,
1384 int mdt_punch_hdl(struct tgt_session_info *tsi);
1385 int mdt_fallocate_hdl(struct tgt_session_info *tsi);
1386 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1387 struct ldlm_lock **lockp, __u64 flags);
1388 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1389 struct ldlm_lock **lockp, __u64 flags);
1390 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1391 struct lustre_handle *lh);
1392 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1393 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1394 struct ldlm_resource *res, bool increase_only);
1395 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1396 struct obdo *oa, bool increase_only);
1397 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1399 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1400 struct mdt_object *mo)
1402 return lu_object_is_dying(&mo->mot_header) &&
1403 S_ISREG(lu_object_attr(&mo->mot_obj));
1406 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1407 const struct lu_fid *fid, struct mdt_body *mb,
1409 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1410 const struct lu_fid *fid);
1411 void mdt_hp_brw(struct tgt_session_info *tsi);
1412 void mdt_hp_punch(struct tgt_session_info *tsi);
1413 int mdt_data_version_get(struct tgt_session_info *tsi);
1414 int mdt_io_set_info(struct tgt_session_info *tsi);
1417 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1418 u64 want, bool conservative);
1419 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1421 static inline bool mdt_is_rootadmin(struct mdt_thread_info *info)
1423 struct lu_ucred *uc = NULL;
1427 if (info == NULL || info->mti_body == NULL)
1428 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1429 /* return true in case old client did not send mdt body */
1435 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1439 uc = mdt_ucred(info);
1440 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1441 cap_raised(uc->uc_cap, CAP_SYS_ADMIN));
1443 mdt_exit_ucred(info);
1448 /* We forbid operations from encryption-unaware clients if they try to
1449 * manipulate encrypted files/directories.
1451 static inline int mdt_check_enc(struct mdt_thread_info *info,
1452 struct mdt_object *obj)
1454 struct obd_export *exp;
1455 struct md_attr ma = { 0 };
1458 if (!mdt_info_req(info))
1459 /* no req, so cannot tell about client connection flags:
1463 exp = mdt_info_req(info)->rq_export;
1464 if (exp_connect_encrypt(exp))
1465 /* client is encryption aware: fine */
1468 ma.ma_need = MA_INODE;
1469 mdt_attr_get_complex(info, obj, &ma);
1470 if (ma.ma_attr.la_valid & LA_FLAGS &&
1471 ma.ma_attr.la_flags & LUSTRE_ENCRYPT_FL)
1475 CDEBUG(D_SEC, "%s: operation on encrypted "DFID
1476 " from encryption-unaware client %s: %d\n",
1477 mdt_obd_name(info->mti_mdt),
1478 PFID(lu_object_fid(&obj->mot_obj)),
1479 libcfs_nidstr(&exp->exp_connection->c_peer.nid), rc);
1484 int mdt_reint_migrate(struct mdt_thread_info *info,
1485 struct mdt_lock_handle *unused);
1486 int mdt_dir_layout_update(struct mdt_thread_info *info);
1488 /* directory restripe */
1489 int mdt_restripe_internal(struct mdt_thread_info *info,
1490 struct mdt_object *parent,
1491 struct mdt_object *child,
1492 const struct lu_name *lname,
1493 struct lu_fid *tfid,
1494 struct md_op_spec *spec,
1495 struct md_attr *ma);
1496 int mdt_restriper_start(struct mdt_device *mdt);
1497 void mdt_restriper_stop(struct mdt_device *mdt);
1498 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1499 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1500 struct mdt_object *o);
1501 void mdt_restripe_update_add(struct mdt_thread_info *info,
1502 struct mdt_object *o);
1503 int mdt_is_remote_object(struct mdt_thread_info *info,
1504 struct mdt_object *parent,
1505 struct mdt_object *child);
1507 #endif /* _MDT_INTERNAL_H */