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
129 refcount_t cdt_ref; /**< cdt refcount */
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 timeout_t cdt_loop_period; /**< llog scan period */
150 timeout_t cdt_grace_delay; /**< request grace
152 timeout_t cdt_active_req_timeout; /**< request timeout */
153 __u32 cdt_default_archive_id; /**< archive id used
156 u64 cdt_max_requests; /**< max count of started
158 /** Current count of active requests */
159 atomic_t cdt_request_count; /** total */
160 atomic_t cdt_archive_count;
161 atomic_t cdt_restore_count;
162 atomic_t cdt_remove_count;
164 /* started requests (struct cdt_agent_req:car_cookie_hash)
165 * indexed by cookie */
166 struct cfs_hash *cdt_request_cookie_hash;
167 /* started requests (struct cdt_agent_req:car_request_list) */
168 struct list_head cdt_request_list;
169 struct list_head cdt_agents; /**< list of register
171 struct rhashtable cdt_restore_hash; /* rhashtable for
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,
273 unsigned int mo_dom_lock;
275 /* mdt state flags */
276 unsigned long mdt_state;
278 /* transaction callbacks */
279 struct dt_txn_callback mdt_txn_cb;
281 /* these values should be updated from lov if necessary.
282 * or should be placed somewhere else. */
287 /* Max modify RPCs, replaces max_mod_rpcs_per_client module param */
288 unsigned int mdt_max_mod_rpcs_in_flight;
290 /* preferred BRW size, decided by storage type and capability */
293 struct upcall_cache *mdt_identity_cache;
295 unsigned int mdt_evict_tgt_nids:1,
297 mdt_migrate_hsm_allowed:1,
298 mdt_enable_strict_som:1,
299 /* Enable remote dir on non-MDT0 */
300 mdt_enable_dir_migration:1,
301 mdt_enable_dir_restripe:1,
302 mdt_enable_dir_auto_split:1,
303 mdt_enable_parallel_rename_dir:1,
304 mdt_enable_parallel_rename_file:1,
305 mdt_enable_parallel_rename_crossdir: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,
313 /* this is enabled by default, but once an
314 * old client joins, disable this to handle
315 * inherited default LMV on server.
317 mdt_enable_dmv_implicit_inherit:1,
318 /* set dmv by setxattr, off by default */
319 mdt_enable_dmv_xattr:1;
321 /* user with gid can create remote/striped
322 * dir, and set default dir stripe */
323 gid_t mdt_enable_remote_dir_gid;
324 /* user with this gid can change projid */
325 gid_t mdt_enable_chprojid_gid;
326 kernel_cap_t mdt_enable_cap_mask;
328 /* lock for osfs and md_root */
331 /* statfs optimization: we cache a bit */
332 struct mdt_statfs_cache mdt_sum_osfs;
333 struct mdt_statfs_cache mdt_osfs;
336 struct root_squash_info mdt_squash;
338 struct rename_stats mdt_rename_stats;
339 struct lu_fid mdt_md_root_fid;
341 /* connection to quota master */
342 struct obd_export *mdt_qmt_exp;
343 /* quota master device associated with this MDT */
344 struct lu_device *mdt_qmt_dev;
346 struct coordinator mdt_coordinator;
348 /* inter-MDT connection count */
349 atomic_t mdt_mds_mds_conns;
351 /* MDT device async commit count, used for debug and sanity test */
352 atomic_t mdt_async_commit_count;
354 struct mdt_object *mdt_md_root;
356 struct mdt_dir_restriper mdt_restriper;
358 /* count of old clients that doesn't support DMV implicite inherit */
359 atomic_t mdt_dmv_old_client_count;
361 /* name of xattr used to store jobid in mdt inode */
362 char mdt_job_xattr[XATTR_JOB_MAX_LEN];
365 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
366 #define MDT_COS_DEFAULT (0)
368 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
371 struct lu_object_header mot_header;
372 struct lu_object mot_obj;
373 unsigned int mot_lov_created:1, /* lov object created */
374 mot_cache_attr:1, /* enable remote object
376 mot_restriping:1, /* dir restriping */
377 /* dir auto-split disabled */
378 mot_auto_split_disabled:1,
379 mot_lsom_inited:1; /* lsom was inited */
381 spinlock_t mot_write_lock;
382 /* Lock to protect create_data */
383 struct mutex mot_lov_mutex;
384 /* Lock to protect object's SOM update. */
385 struct mutex mot_som_mutex;
387 __u64 mot_lsom_blocks;
388 /* lock to protect read/write stages for Data-on-MDT files */
389 struct rw_semaphore mot_dom_sem;
390 /* Lock to protect lease open.
391 * Lease open acquires write lock; normal open acquires read lock */
392 struct rw_semaphore mot_open_sem;
393 atomic_t mot_lease_count;
394 atomic_t mot_open_count;
395 /* directory offset, used in sub file migration in dir restripe */
396 loff_t mot_restripe_offset;
397 /* link to mdt_restriper auto_splitting/migrating/updating */
398 struct list_head mot_restripe_linkage;
401 struct mdt_lock_handle {
402 /* Lock type, reg for cross-ref use or pdo lock. */
406 struct lustre_handle mlh_reg_lh;
407 enum ldlm_mode mlh_reg_mode;
411 struct lustre_handle mlh_pdo_lh;
412 enum ldlm_mode mlh_pdo_mode;
413 unsigned int mlh_pdo_hash;
414 unsigned int mlh_pdo_remote:1;
416 /* Remote regular lock */
417 struct lustre_handle mlh_rreg_lh;
418 enum ldlm_mode mlh_rreg_mode;
422 MDT_LH_PARENT, /* parent lockh */
423 MDT_LH_CHILD, /* child lockh */
424 MDT_LH_OLD, /* old lockh for rename */
425 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
426 MDT_LH_NEW, /* new lockh for rename */
427 MDT_LH_RMT, /* used for return lh to caller */
428 MDT_LH_LOCAL, /* local lock never return to client */
429 MDT_LH_LOOKUP, /* lookup lock for source object in rename/migrate if
430 * it's remote object */
439 /* Special magical errno for communicaiton between mdt_reint_open()
440 * and mdt_intent_reint() which means return the lock to the client
441 * for subsequent cross ref open. Previously we used plain -EREMOTE
442 * but other functions called in that path might return it too and
443 * confuse us. This is not returned to the client. See LU-5370. */
444 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
446 struct mdt_reint_record {
447 enum mds_reint_op rr_opcode;
448 const struct lustre_handle *rr_open_handle;
449 const struct lustre_handle *rr_lease_handle;
450 const struct lu_fid *rr_fid1;
451 const struct lu_fid *rr_fid2;
452 struct lu_name rr_name;
453 struct lu_name rr_tgt_name;
460 enum mdt_reint_flag {
461 MRF_OPEN_TRUNC = BIT(0),
462 MRF_OPEN_RESEND = BIT(1),
466 * Common data shared by mdt-level handlers. This is allocated per-thread to
467 * reduce stack consumption.
469 struct mdt_thread_info {
472 * The following members will be filled explicitly
473 * with specific data in mdt_thread_info_init().
475 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
476 * request handling may migrate from one server thread to another.
478 struct req_capsule *mti_pill;
481 * SUB request pill in a batch request.
483 struct req_capsule mti_sub_pill;
485 /* although we have export in req, there are cases when it is not
486 * available, e.g. closing files upon export destroy */
487 struct obd_export *mti_exp;
489 * A couple of lock handles.
491 struct mdt_lock_handle mti_lh[MDT_LH_NR];
493 struct mdt_device *mti_mdt;
494 const struct lu_env *mti_env;
496 /* transaction number of current request */
501 * The following members will be filled expilictly
502 * with zero in mdt_thread_info_init(). These members may be used
509 struct md_attr mti_attr;
510 struct md_attr mti_attr2; /* mdt_lvb.c */
512 * Body for "habeo corpus" operations.
514 const struct mdt_body *mti_body;
516 * Host object. This is released at the end of mdt_handler().
518 struct mdt_object *mti_object;
520 * Lock request for "habeo clavis" operations.
522 const struct ldlm_request *mti_dlm_req;
524 __u32 mti_cross_ref:1,
525 /* big_lmm buffer was used and must be used in reply */
529 /* Batch processing environment */
532 /* opdata for mdt_reint_open(), has the same as
533 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
534 * value onto disk for recovery when mdt_trans_stop_cb() is called.
540 * The following members will be filled explicitly
541 * with zero in mdt_reint_unpack(), because they are only used
542 * by reint requests (including mdt_reint_open()).
546 * reint record. contains information for reint operations.
548 struct mdt_reint_record mti_rr;
550 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
552 * Operation specification (currently create and lookup)
554 struct md_op_spec mti_spec;
558 * The following members will _NOT_ be initialized at all.
559 * DO NOT expect them to contain any valid value.
560 * They should be initialized explicitly by the user themselves.
563 /* XXX: If something is in a union, make sure they do not conflict */
564 struct lu_fid mti_tmp_fid1;
565 struct lu_fid mti_tmp_fid2;
566 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
567 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
569 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
570 char ns_name[48];/* for mdt_init0() */
571 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
572 struct obd_statfs osfs; /* for mdt_statfs() */
574 /* for mdt_readpage() */
575 struct lu_rdpg mti_rdpg;
585 struct lustre_handle mti_open_handle;
587 struct lu_buf mti_buf;
588 struct lu_buf mti_big_buf;
590 /* Ops object filename */
591 struct lu_name mti_name;
592 char mti_filename[NAME_MAX + 1];
593 /* per-thread values, can be re-used, may be vmalloc'd */
598 /* should be enough to fit lustre_mdt_attrs */
599 char mti_xattr_buf[128];
600 struct ldlm_enqueue_info mti_einfo;
601 /* einfo used by mdt_remote_object_lock_try() */
602 struct ldlm_enqueue_info mti_remote_einfo;
603 struct tg_reply_data *mti_reply_data;
605 /* FLR: layout change API */
606 struct md_layout_change mti_mlc;
608 struct lu_seq_range mti_range;
611 extern struct lu_context_key mdt_thread_key;
613 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
615 return lu_env_info(env, &mdt_thread_key);
618 struct cdt_req_progress {
619 spinlock_t crp_lock; /**< protect tree */
620 struct interval_tree_root crp_root; /**< tree to track extent
625 struct cdt_agent_req {
626 struct hlist_node car_cookie_hash; /**< find req by cookie */
627 struct list_head car_request_list; /**< to chain all the req. */
628 struct kref car_refcount; /**< reference counter */
629 __u64 car_flags; /**< request original flags */
630 struct obd_uuid car_uuid; /**< agent doing the req. */
631 __u32 car_archive_id; /**< archive id */
632 int car_canceled; /**< request was canceled */
633 time64_t car_req_start; /**< start time */
634 time64_t car_req_update; /**< last update time */
635 struct hsm_action_item *car_hai; /**< req. to the agent */
636 struct cdt_req_progress car_progress; /**< track data mvt
639 extern struct kmem_cache *mdt_hsm_car_kmem;
642 struct list_head ha_list; /**< to chain the agents */
643 struct obd_uuid ha_uuid; /**< agent uuid */
644 __u32 *ha_archive_id; /**< archive id */
645 int ha_archive_cnt; /**< number of archive entries
646 * 0 means any archive */
647 atomic_t ha_requests; /**< current request count */
648 atomic_t ha_success; /**< number of successful
650 atomic_t ha_failure; /**< number of failed actions */
653 struct cdt_restore_handle {
654 struct rhash_head crh_hash; /**< link to cdt_restore_hash */
655 struct lu_fid crh_fid; /**< fid of the object */
656 struct ldlm_extent crh_extent; /**< extent of the restore */
657 struct mdt_lock_handle crh_lh; /**< lock handle */
658 atomic_t crh_refc; /**< crh ref counter */
659 struct rcu_head crh_rcu; /**< crh rcu head */
661 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
663 struct hsm_record_update {
665 enum agent_req_status status;
668 static inline const struct md_device_operations *
669 mdt_child_ops(struct mdt_device * m)
671 LASSERT(m->mdt_child);
672 return m->mdt_child->md_ops;
675 static inline struct md_object *mdt_object_child(struct mdt_object *o)
678 return lu2md(lu_object_next(&o->mot_obj));
681 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
683 return info->mti_pill ? info->mti_pill->rc_req : NULL;
686 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
688 LASSERT(info->mti_exp);
689 return exp_connect_flags(info->mti_exp);
692 static inline void mdt_object_get(const struct lu_env *env,
693 struct mdt_object *o)
696 lu_object_get(&o->mot_obj);
700 static inline void mdt_object_put(const struct lu_env *env,
701 struct mdt_object *o)
704 lu_object_put(env, &o->mot_obj);
708 static inline int mdt_object_exists(const struct mdt_object *o)
710 return lu_object_exists(&o->mot_obj);
713 static inline int mdt_object_remote(const struct mdt_object *o)
715 return lu_object_remote(&o->mot_obj);
718 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
720 return lu_object_fid(&o->mot_obj);
723 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
725 return mdt->mdt_lu_dev.ld_site;
728 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
730 return &mdt->mdt_seq_site;
733 static inline u32 mdt_node_id(const struct mdt_device *mdt)
735 return mdt->mdt_seq_site.ss_node_id;
738 static inline void mdt_export_evict(struct obd_export *exp)
740 class_fail_export(exp);
743 /* Here we use LVB_TYPE to check dne client, because it is
744 * also landed on 2.4. */
745 static inline bool mdt_is_dne_client(struct obd_export *exp)
747 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
750 static inline bool mdt_is_striped_client(struct obd_export *exp)
752 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
755 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
757 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
761 mdt_lmm_dom_entry_check(lmm, &dom_only);
765 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
767 return mdt_lmm_dom_entry_check(lmm, NULL);
770 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
772 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
774 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
775 le16_to_cpu(lcm->lcm_mirror_count) > 0;
778 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
780 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
781 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
782 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
787 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
789 struct lov_comp_md_v1 *comp_v1;
790 struct lov_mds_md *v1;
794 comp_v1 = (struct lov_comp_md_v1 *)lmm;
796 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
797 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
798 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
800 if (lmm_is_overstriping(v1))
807 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
809 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
810 return mdt_lmm_comp_overstriping(lmm);
812 return lmm_is_overstriping(lmm);
815 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
817 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
818 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
821 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
822 void mdt_set_disposition(struct mdt_thread_info *info,
823 struct ldlm_reply *rep, __u64 op_flag);
824 void mdt_clear_disposition(struct mdt_thread_info *info,
825 struct ldlm_reply *rep, __u64 op_flag);
827 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
828 const struct lu_name *lname);
830 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
831 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
833 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
834 struct mdt_lock_handle *lh);
836 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
837 struct mdt_lock_handle *lhc);
839 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *obj,
840 struct mdt_lock_handle *lh, __u64 ibits,
841 enum ldlm_mode mode);
842 int mdt_parent_lock(struct mdt_thread_info *info, struct mdt_object *o,
843 struct mdt_lock_handle *lh, const struct lu_name *lname,
844 enum ldlm_mode mode);
845 int mdt_object_stripes_lock(struct mdt_thread_info *info,
846 struct mdt_object *pobj, struct mdt_object *o,
847 struct mdt_lock_handle *lh,
848 struct ldlm_enqueue_info *einfo, __u64 ibits,
849 enum ldlm_mode mode);
850 int mdt_object_check_lock(struct mdt_thread_info *info,
851 struct mdt_object *parent, struct mdt_object *child,
852 struct mdt_lock_handle *lh, __u64 ibits,
853 enum ldlm_mode mode);
854 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
855 struct mdt_lock_handle *lh, __u64 *ibits,
856 __u64 trybits, enum ldlm_mode mode);
858 /* below three lock functions are used internally */
859 int mdt_object_lock_internal(struct mdt_thread_info *info,
860 struct mdt_object *obj, const struct lu_fid *fid,
861 struct mdt_lock_handle *lh, __u64 *ibits,
862 __u64 trybits, bool cache);
863 int mdt_object_pdo_lock(struct mdt_thread_info *info, struct mdt_object *obj,
864 struct mdt_lock_handle *lh, const struct lu_name *name,
865 enum ldlm_mode mode, bool pdo_lock);
866 int mdt_object_lookup_lock(struct mdt_thread_info *info,
867 struct mdt_object *pobj, struct mdt_object *obj,
868 struct mdt_lock_handle *lh, enum ldlm_mode mode);
870 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
871 struct mdt_lock_handle *lh, int decref);
872 void mdt_object_stripes_unlock(struct mdt_thread_info *info,
873 struct mdt_object *o, struct mdt_lock_handle *lh,
874 struct ldlm_enqueue_info *einfo, int decref);
876 struct mdt_object *mdt_object_new(const struct lu_env *env,
878 const struct lu_fid *);
879 struct mdt_object *mdt_object_find(const struct lu_env *,
881 const struct lu_fid *);
882 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
883 const struct lu_fid *f,
884 struct mdt_lock_handle *lh,
885 __u64 ibits, enum ldlm_mode mode);
886 void mdt_object_unlock_put(struct mdt_thread_info *info,
887 struct mdt_object *o,
888 struct mdt_lock_handle *lh,
891 void mdt_client_compatibility(struct mdt_thread_info *info);
893 enum mdt_name_flags {
897 int mdt_name_unpack(struct req_capsule *pill,
898 const struct req_msg_field *field,
900 enum mdt_name_flags flags);
901 int mdt_close_unpack(struct mdt_thread_info *info);
902 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
903 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
904 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
905 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
906 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
907 struct mdt_object *o, struct lu_nodemap *nodemap);
909 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
910 const struct lu_attr *attr, const struct lu_fid *fid);
911 int mdt_pack_size2body(struct mdt_thread_info *info,
912 const struct lu_fid *fid, struct lustre_handle *lh);
913 int mdt_getxattr(struct mdt_thread_info *info);
914 int mdt_reint_setxattr(struct mdt_thread_info *info,
915 struct mdt_lock_handle *lh);
917 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
918 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
919 struct mdt_lock_handle *lhc);
921 extern void target_recovery_fini(struct obd_device *obd);
922 extern void target_recovery_init(struct lu_target *lut,
923 svc_handler_t handler);
925 int mdt_export_stats_init(struct obd_device *obd,
926 struct obd_export *exp,
929 int mdt_lock_new_child(struct mdt_thread_info *info,
930 struct mdt_object *o,
931 struct mdt_lock_handle *child_lockh);
932 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
933 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
934 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
935 const struct lustre_handle *open_handle,
937 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
938 struct mdt_object *pobj,
939 struct mdt_object *obj);
941 int mdt_get_info(struct tgt_session_info *tsi);
942 int mdt_attr_get_complex(struct mdt_thread_info *info,
943 struct mdt_object *o, struct md_attr *ma);
944 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
946 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
947 struct md_attr *ma, const char *name);
948 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
949 struct md_attr *ma, const char *name);
950 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
951 struct lu_fid *pfid);
952 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
953 struct lu_fid *pfid, struct lu_name *lname);
954 int mdt_write_get(struct mdt_object *o);
955 void mdt_write_put(struct mdt_object *o);
956 int mdt_write_read(struct mdt_object *o);
957 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
958 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
959 void mdt_mfd_free(struct mdt_file_data *mfd);
960 int mdt_close(struct tgt_session_info *tsi);
961 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
963 int mdt_fix_reply(struct mdt_thread_info *info);
964 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
966 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
967 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
968 struct mdt_lock_handle *lhc,
969 struct md_layout_change *spec);
970 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
971 struct mdt_object *parent, struct mdt_object *child);
972 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
974 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
975 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
976 const void *area, ssize_t len);
978 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
979 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
981 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
982 int mdt_check_ucred(struct mdt_thread_info *);
983 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
984 int mdt_init_ucred_reint(struct mdt_thread_info *);
985 void mdt_exit_ucred(struct mdt_thread_info *);
986 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
987 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
988 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
990 int mdt_lookup_version_check(struct mdt_thread_info *info,
991 struct mdt_object *p,
992 const struct lu_name *lname,
993 struct lu_fid *fid, int idx);
994 void mdt_thread_info_reset(struct mdt_thread_info *info);
995 void mdt_thread_info_init(struct ptlrpc_request *req,
996 struct mdt_thread_info *mti);
997 void mdt_thread_info_fini(struct mdt_thread_info *mti);
998 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
999 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
1000 struct ldlm_lock *new_lock,
1001 struct mdt_lock_handle *lh, __u64 flags);
1002 int mdt_intent_lock_replace(struct mdt_thread_info *info,
1003 struct ldlm_lock **lockp,
1004 struct mdt_lock_handle *lh,
1005 __u64 flags, int result);
1007 int hsm_init_ucred(struct lu_ucred *uc);
1008 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
1009 const struct md_hsm *mh);
1011 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1012 void *data, int flag);
1013 int mdt_links_read(struct mdt_thread_info *info,
1014 struct mdt_object *mdt_obj,
1015 struct linkea_data *ldata);
1016 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
1017 struct mdt_body *repbody);
1018 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
1019 struct mdt_object *child);
1020 int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
1021 struct mdt_object *child);
1022 void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
1023 struct mdt_object *obj, struct md_attr *ma,
1026 static inline struct mdt_device *mdt_dev(struct lu_device *d)
1028 return container_of_safe(d, struct mdt_device, mdt_lu_dev);
1031 static inline struct mdt_object *mdt_obj(struct lu_object *o)
1033 return container_of_safe(o, struct mdt_object, mot_obj);
1036 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
1038 struct lu_object *lo;
1039 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
1041 lo = lu_object_locate(mo->mot_obj.lo_header,
1042 mdt->mdt_bottom->dd_lu_dev.ld_type);
1047 static inline bool agent_req_in_final_state(enum agent_req_status ars)
1049 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
1050 (ars == ARS_CANCELED));
1053 /* mdt/mdt_identity.c */
1054 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
1055 #define UC_IDCACHE_HASH_SIZE 128
1056 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
1058 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
1060 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
1062 void mdt_flush_identity(struct upcall_cache *, int);
1064 __u32 mdt_identity_get_perm(struct md_identity *identity, struct lnet_nid *nid);
1066 /* mdt/mdt_recovery.c */
1067 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
1069 /* mdt/mdt_batch.c */
1070 int mdt_batch(struct tgt_session_info *tsi);
1073 int mdt_hsm_state_get(struct tgt_session_info *tsi);
1074 int mdt_hsm_state_set(struct tgt_session_info *tsi);
1075 int mdt_hsm_action(struct tgt_session_info *tsi);
1076 int mdt_hsm_progress(struct tgt_session_info *tsi);
1077 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
1078 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
1079 int mdt_hsm_request(struct tgt_session_info *tsi);
1081 /* mdt/mdt_hsm_cdt_actions.c */
1082 extern const struct file_operations mdt_hsm_actions_fops;
1083 void dump_llog_agent_req_rec(const char *prefix,
1084 const struct llog_agent_req_rec *larr);
1085 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
1086 llog_cb_t cb, void *data, u32 start_cat_idx,
1087 u32 start_rec_idx, int rw);
1088 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
1089 __u32 archive_id, __u64 flags,
1090 struct hsm_action_item *hai);
1091 int mdt_agent_record_update(struct mdt_thread_info *mti,
1092 struct hsm_record_update *updates,
1093 unsigned int updates_count);
1094 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
1096 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
1097 u32 *cat_idt, u32 *rec_idx);
1098 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
1100 /* mdt/mdt_hsm_cdt_agent.c */
1101 extern const struct file_operations mdt_hsm_agent_fops;
1102 int mdt_hsm_agent_register(struct mdt_thread_info *info,
1103 const struct obd_uuid *uuid,
1104 int nr_archives, __u32 *archive_num);
1105 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
1106 const struct obd_uuid *uuid,
1107 __u32 archive_mask);
1108 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
1109 const struct obd_uuid *uuid);
1110 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
1111 int succ_rq, int fail_rq, int new_rq,
1112 const struct obd_uuid *uuid);
1113 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1114 struct obd_uuid *uuid);
1115 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1117 /* mdt/mdt_hsm_cdt_client.c */
1118 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1119 struct hsm_action_list *hal);
1120 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1121 const struct lu_fid *fid,
1122 enum hsm_copytool_action *action,
1123 enum agent_req_status *status,
1124 struct hsm_extent *extent);
1125 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1126 const struct lu_fid *fid);
1127 /* mdt/mdt_hsm_cdt_requests.c */
1128 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1129 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1130 extern const struct file_operations mdt_hsm_active_requests_fops;
1131 void dump_requests(char *prefix, struct coordinator *cdt);
1132 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1133 struct obd_uuid *uuid,
1134 struct hsm_action_item *hai);
1135 void mdt_cdt_free_request(struct cdt_agent_req *car);
1136 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1137 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1138 void mdt_cdt_get_request(struct cdt_agent_req *car);
1139 void mdt_cdt_put_request(struct cdt_agent_req *car);
1140 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1141 const struct hsm_progress_kernel *pgs);
1142 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1143 /* mdt/mdt_coordinator.c */
1144 void mdt_hsm_dump_hal(int level, const char *prefix,
1145 struct hsm_action_list *hal);
1146 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1147 const struct lu_fid *fid,
1148 const struct hsm_extent *he);
1149 bool cdt_restore_handle_exists(struct coordinator *cdt,
1150 const struct lu_fid *fid);
1151 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1152 struct coordinator *cdt, const struct lu_fid *fid);
1153 int cdt_getref_try(struct coordinator *cdt);
1154 void cdt_putref(struct coordinator *cdt);
1155 /* coordinator management */
1156 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1157 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1158 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1161 * Signal the coordinator has work to do
1162 * \param cdt [IN] coordinator
1164 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1166 cdt->cdt_event = true;
1169 /* coordinator control sysfs interface */
1170 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1172 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1173 const char *buffer, size_t count);
1174 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1175 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1176 /* md_hsm helpers */
1177 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1178 const struct lu_fid *fid,
1179 struct md_hsm *hsm);
1180 /* actions/request helpers */
1181 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1182 struct hsm_action_list *hal, struct obd_uuid *uuid);
1183 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1184 u32 archive_id, u64 rq_flags,
1185 const struct md_hsm *hsm);
1186 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1187 struct hsm_progress_kernel *pgs);
1189 extern struct lu_context_key mdt_thread_key;
1191 /* debug issues helper starts here*/
1192 static inline int mdt_fail_write(const struct lu_env *env,
1193 struct dt_device *dd, int id)
1195 if (CFS_FAIL_CHECK_ORSET(id, CFS_FAIL_ONCE)) {
1196 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1198 return dt_ro(env, dd);
1199 /* We set FAIL_ONCE because we never "un-fail" a device */
1205 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1207 return &req->rq_export->exp_mdt_data;
1210 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1212 return mdt_dev(exp->exp_obd->obd_lu_dev);
1215 static inline bool mdt_rdonly(struct obd_export *exp)
1217 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1218 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1219 mdt_exp2dev(exp)->mdt_readonly);
1222 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1223 struct mdt_lock_handle *lhc);
1224 static inline int mdt_check_resent(struct mdt_thread_info *info,
1225 mdt_reconstruct_t reconstruct,
1226 struct mdt_lock_handle *lhc)
1228 struct ptlrpc_request *req = mdt_info_req(info);
1232 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1233 OBD_ALLOC_PTR(info->mti_reply_data);
1234 if (info->mti_reply_data == NULL)
1237 rc = req_can_reconstruct(req, info->mti_reply_data);
1239 reconstruct(info, lhc);
1241 DEBUG_REQ(D_HA, req,
1242 "no reply data found for RESENT req, rc = %d",
1245 OBD_FREE_PTR(info->mti_reply_data);
1246 info->mti_reply_data = NULL;
1251 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1252 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1254 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1256 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1259 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1261 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1263 return -ELDLM_NO_LOCK_DATA;
1266 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1267 static inline int mdt_fid_lock(const struct lu_env *env,
1268 struct ldlm_namespace *ns,
1269 struct lustre_handle *lh, enum ldlm_mode mode,
1270 union ldlm_policy_data *policy,
1271 const struct ldlm_res_id *res_id,
1272 __u64 flags, const __u64 *client_cookie)
1275 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1277 LASSERT(ns != NULL);
1278 LASSERT(lh != NULL);
1280 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1281 mode, &flags, mdt_blocking_ast,
1282 ldlm_completion_ast,
1283 glimpse ? mdt_dom_glimpse_ast : NULL,
1284 NULL, 0, LVB_T_NONE, client_cookie, lh);
1285 return rc == ELDLM_OK ? 0 : -EIO;
1288 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1290 ldlm_lock_decref(lh, mode);
1293 /* this is identical to say this is a DNE system */
1294 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1296 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1299 extern mdl_mode_t mdt_mdl_lock_modes[];
1300 extern enum ldlm_mode mdt_dlm_lock_modes[];
1302 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1304 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1306 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1307 return mdt_mdl_lock_modes[mode];
1310 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1312 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1313 return mdt_dlm_lock_modes[mode];
1317 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1318 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1319 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1320 struct md_attr *ma);
1321 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1322 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1326 extern struct ldlm_valblock_ops mdt_lvbo;
1327 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1328 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1329 struct ptlrpc_request *req, bool increase_only);
1331 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1332 int mdt_cos_is_enabled(struct mdt_device *);
1350 LPROC_MDT_RENAME_SAMEDIR,
1351 LPROC_MDT_RENAME_PAR_FILE,
1352 LPROC_MDT_RENAME_PAR_DIR,
1353 LPROC_MDT_RENAME_CROSSDIR,
1356 LPROC_MDT_IO_READ_BYTES,
1357 LPROC_MDT_IO_WRITE_BYTES,
1360 LPROC_MDT_FALLOCATE,
1364 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
1365 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset,
1366 enum lprocfs_counter_config cntr_umask);
1367 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1368 void mdt_tunables_fini(struct mdt_device *mdt);
1370 /* lustre/mdt_mdt_lproc.c */
1371 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1373 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1374 struct mdt_device *mdt,
1375 struct ptlrpc_request *req,
1376 struct mdt_object *src, struct mdt_object *tgt,
1377 enum mdt_stat_idx msi, s64 count);
1379 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1381 return mdt->mdt_lu_dev.ld_obd;
1384 extern const struct lu_device_operations mdt_lu_ops;
1386 static inline char *mdt_obd_name(struct mdt_device *mdt)
1388 return mdt->mdt_lu_dev.ld_obd->obd_name;
1391 int mds_mod_init(void);
1392 void mds_mod_exit(void);
1394 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1396 struct obd_export *exp = req->rq_export;
1399 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1400 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1407 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1408 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1410 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1411 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1412 struct niobuf_remote *rnb, int *nr_local,
1413 struct niobuf_local *lnb);
1415 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1416 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1417 struct niobuf_remote *rnb, int npages,
1418 struct niobuf_local *lnb, int old_rc, int nob,
1420 int mdt_punch_hdl(struct tgt_session_info *tsi);
1421 int mdt_fallocate_hdl(struct tgt_session_info *tsi);
1422 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1423 struct ldlm_lock **lockp, __u64 flags);
1424 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1425 struct ldlm_lock **lockp, __u64 flags);
1426 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1427 struct lustre_handle *lh);
1428 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1429 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1430 struct ldlm_resource *res, bool increase_only);
1431 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1432 struct obdo *oa, bool increase_only);
1433 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1435 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1436 struct mdt_object *mo)
1438 return lu_object_is_dying(&mo->mot_header) &&
1439 S_ISREG(lu_object_attr(&mo->mot_obj));
1442 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1443 const struct lu_fid *fid, struct mdt_body *mb,
1445 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1446 const struct lu_fid *fid);
1447 void mdt_hp_brw(struct tgt_session_info *tsi);
1448 void mdt_hp_punch(struct tgt_session_info *tsi);
1449 int mdt_data_version_get(struct tgt_session_info *tsi);
1450 int mdt_io_set_info(struct tgt_session_info *tsi);
1453 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1454 u64 want, bool conservative);
1455 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1457 static inline bool mdt_changelog_allow(struct mdt_thread_info *info)
1459 struct lu_ucred *uc = NULL;
1463 if (info == NULL || info->mti_body == NULL)
1464 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1465 /* return true in case old client did not send mdt body */
1471 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1475 uc = mdt_ucred(info);
1476 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1477 cap_raised(uc->uc_cap, CAP_SYS_ADMIN) &&
1478 uc->uc_rbac_chlg_ops);
1480 mdt_exit_ucred(info);
1485 /* We forbid operations from encryption-unaware clients if they try to
1486 * manipulate encrypted files/directories.
1488 static inline int mdt_check_enc(struct mdt_thread_info *info,
1489 struct mdt_object *obj)
1491 struct obd_export *exp;
1492 struct md_attr ma = { 0 };
1495 if (!mdt_info_req(info))
1496 /* no req, so cannot tell about client connection flags:
1500 exp = mdt_info_req(info)->rq_export;
1501 if (exp_connect_encrypt(exp))
1502 /* client is encryption aware: fine */
1505 ma.ma_need = MA_INODE;
1506 mdt_attr_get_complex(info, obj, &ma);
1507 if (ma.ma_attr.la_valid & LA_FLAGS &&
1508 ma.ma_attr.la_flags & LUSTRE_ENCRYPT_FL)
1512 CDEBUG(D_SEC, "%s: operation on encrypted "DFID
1513 " from encryption-unaware client %s: %d\n",
1514 mdt_obd_name(info->mti_mdt),
1515 PFID(lu_object_fid(&obj->mot_obj)),
1516 libcfs_nidstr(&exp->exp_connection->c_peer.nid), rc);
1521 int mdt_fids_different_target(struct mdt_thread_info *info,
1522 const struct lu_fid *fid1,
1523 const struct lu_fid *fid2);
1525 int mdt_reint_migrate(struct mdt_thread_info *info,
1526 struct mdt_lock_handle *unused);
1527 int mdt_dir_layout_update(struct mdt_thread_info *info);
1529 /* directory restripe */
1530 int mdt_restripe_internal(struct mdt_thread_info *info,
1531 struct mdt_object *parent,
1532 struct mdt_object *child,
1533 const struct lu_name *lname,
1534 struct lu_fid *tfid,
1535 struct md_op_spec *spec,
1536 struct md_attr *ma);
1537 int mdt_restriper_start(struct mdt_device *mdt);
1538 void mdt_restriper_stop(struct mdt_device *mdt);
1539 void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
1540 void mdt_restripe_migrate_add(struct mdt_thread_info *info,
1541 struct mdt_object *o);
1542 void mdt_restripe_update_add(struct mdt_thread_info *info,
1543 struct mdt_object *o);
1544 int mdt_is_remote_object(struct mdt_thread_info *info,
1545 struct mdt_object *parent,
1546 struct mdt_object *child);
1548 static unsigned int max_mod_rpcs_per_client = OBD_MAX_RIF_DEFAULT;
1549 #if OBD_OCD_VERSION(3, 0, 53, 0) > LUSTRE_VERSION_CODE
1550 static inline bool mdt_max_mod_rpcs_changed(struct mdt_device *mdt)
1552 return max_mod_rpcs_per_client != OBD_MAX_RIF_DEFAULT &&
1553 mdt->mdt_max_mod_rpcs_in_flight == OBD_MAX_RIF_DEFAULT;
1556 #define mdt_max_mod_rpcs_changed(mdt) false
1559 #endif /* _MDT_INTERNAL_H */