4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_internal.h
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
44 #ifndef _MDT_INTERNAL_H
45 #define _MDT_INTERNAL_H
47 #include <libcfs/libcfs.h>
48 #include <libcfs/libcfs_hash.h>
49 #include <upcall_cache.h>
50 #include <obd_class.h>
51 #include <lustre_disk.h>
52 #include <lu_target.h>
53 #include <md_object.h>
54 #include <lustre_fid.h>
55 #include <lustre_fld.h>
56 #include <lustre_req_layout.h>
57 #include <lustre_sec.h>
58 #include <lustre_idmap.h>
59 #include <lustre_eacl.h>
60 #include <lustre_quota.h>
61 #include <lustre_linkea.h>
65 /* file data for open files on MDS */
66 struct mdt_file_data {
67 /** portals handle must be first */
68 struct portals_handle mfd_open_handle;
69 /** open mode provided by client */
71 /** protected by med_open_lock */
72 struct list_head mfd_list;
73 /** xid of the open request */
75 /** old handle in replay case */
76 struct lustre_handle mfd_open_handle_old;
77 /** point to opened object */
78 struct mdt_object *mfd_object;
81 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
82 #define CDT_NORETRY_ACTION (1ULL << 1)
83 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
84 #define CDT_POLICY_SHIFT_COUNT 2
85 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
88 /* when adding a new policy, do not forget to update
89 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
91 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
93 /* Coordinator states. Keep the cdt_transition table in sync. */
94 enum cdt_states { CDT_STOPPED = 0,
103 static inline char *cdt_mdt_state2str(int state)
121 /* when multiple lock are needed, the lock order is
129 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
130 bool cdt_event; /**< coordinator event */
131 struct task_struct *cdt_task; /**< cdt thread handle */
132 struct lu_env cdt_env; /**< coordinator lustre
134 struct lu_context cdt_session; /** session for lu_ucred */
135 struct proc_dir_entry *cdt_proc_dir; /**< cdt /proc directory */
136 __u64 cdt_policy; /**< policy flags */
137 enum cdt_states cdt_state; /**< state */
138 struct mutex cdt_state_lock; /**< cdt_state lock */
139 __u64 cdt_last_cookie; /**< last cookie
141 struct rw_semaphore cdt_llog_lock; /**< protect llog
143 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
144 struct rw_semaphore cdt_request_lock; /**< protect request
146 struct mutex cdt_restore_lock; /**< protect restore
148 time64_t cdt_loop_period; /**< llog scan period */
149 time64_t cdt_grace_delay; /**< request grace
151 time64_t cdt_active_req_timeout; /**< request timeout */
152 __u32 cdt_default_archive_id; /**< archive id used
155 __u64 cdt_max_requests; /**< max count of started
157 /** Current count of active requests */
158 atomic_t cdt_request_count; /** total */
159 atomic_t cdt_archive_count;
160 atomic_t cdt_restore_count;
161 atomic_t cdt_remove_count;
163 /* started requests (struct cdt_agent_req:car_cookie_hash)
164 * indexed by cookie */
165 struct cfs_hash *cdt_request_cookie_hash;
166 /* started requests (struct cdt_agent_req:car_request_list) */
167 struct list_head cdt_request_list;
168 struct list_head cdt_agents; /**< list of register
170 struct list_head cdt_restore_handle_list;
172 /* Hash of cookies to locations of record locations in agent
174 struct cfs_hash *cdt_agent_record_hash;
176 /* Bitmasks indexed by the HSMA_XXX constants. */
177 __u64 cdt_user_request_mask;
178 __u64 cdt_group_request_mask;
179 __u64 cdt_other_request_mask;
181 /* Remove archive on last unlink policy */
182 bool cdt_remove_archive_on_last_unlink;
184 bool cdt_wakeup_coordinator;
187 /* mdt state flag bits */
188 #define MDT_FL_CFGLOG 0
189 #define MDT_FL_SYNCED 1
191 /* possible values for mo_dom_lock */
193 NO_DOM_LOCK_ON_OPEN = 0,
194 TRYLOCK_DOM_ON_OPEN = 1,
195 ALWAYS_DOM_LOCK_ON_OPEN = 2,
196 NUM_DOM_LOCK_ON_OPEN_MODES
199 struct mdt_statfs_cache {
200 struct obd_statfs msf_osfs;
206 struct lu_device mdt_lu_dev;
207 struct seq_server_site mdt_seq_site;
208 /* DLM name-space for meta-data locks maintained by this server */
209 struct ldlm_namespace *mdt_namespace;
210 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
211 struct ptlrpc_client *mdt_ldlm_client;
212 /* underlying device */
213 struct obd_export *mdt_child_exp;
214 struct md_device *mdt_child;
215 struct dt_device *mdt_bottom;
216 struct obd_export *mdt_bottom_exp;
217 struct local_oid_storage *mdt_los;
219 struct lu_target mdt_lut;
221 * Options bit-fields.
224 unsigned int mo_user_xattr:1,
229 mo_migrate_hsm_allowed:1;
230 unsigned int mo_dom_lock;
232 /* mdt state flags */
233 unsigned long mdt_state;
235 /* transaction callbacks */
236 struct dt_txn_callback mdt_txn_cb;
238 /* these values should be updated from lov if necessary.
239 * or should be placed somewhere else. */
244 /* preferred BRW size, decided by storage type and capability */
247 struct upcall_cache *mdt_identity_cache;
249 unsigned int mdt_capa_conf:1,
250 /* Enable remote dir on non-MDT0 */
251 mdt_enable_remote_dir:1,
254 gid_t mdt_enable_remote_dir_gid;
256 /* lock for osfs and md_root */
259 /* statfs optimization: we cache a bit */
260 struct mdt_statfs_cache mdt_sum_osfs;
261 struct mdt_statfs_cache mdt_osfs;
264 struct root_squash_info mdt_squash;
266 struct rename_stats mdt_rename_stats;
267 struct lu_fid mdt_md_root_fid;
269 /* connection to quota master */
270 struct obd_export *mdt_qmt_exp;
271 /* quota master device associated with this MDT */
272 struct lu_device *mdt_qmt_dev;
274 struct coordinator mdt_coordinator;
276 /* inter-MDT connection count */
277 atomic_t mdt_mds_mds_conns;
279 /* MDT device async commit count, used for debug and sanity test */
280 atomic_t mdt_async_commit_count;
282 struct mdt_object *mdt_md_root;
285 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
286 #define MDT_COS_DEFAULT (0)
288 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
291 struct lu_object_header mot_header;
292 struct lu_object mot_obj;
293 unsigned int mot_lov_created:1, /* lov object created */
294 mot_cache_attr:1; /* enable remote object
297 spinlock_t mot_write_lock;
298 /* Lock to protect object's SOM update. */
299 struct mutex mot_som_mutex;
300 /* Lock to protect create_data */
301 struct mutex mot_lov_mutex;
302 /* lock to protect read/write stages for Data-on-MDT files */
303 struct rw_semaphore mot_dom_sem;
304 /* Lock to protect lease open.
305 * Lease open acquires write lock; normal open acquires read lock */
306 struct rw_semaphore mot_open_sem;
307 atomic_t mot_lease_count;
308 atomic_t mot_open_count;
311 struct mdt_lock_handle {
312 /* Lock type, reg for cross-ref use or pdo lock. */
316 struct lustre_handle mlh_reg_lh;
317 enum ldlm_mode mlh_reg_mode;
320 struct lustre_handle mlh_pdo_lh;
321 enum ldlm_mode mlh_pdo_mode;
322 unsigned int mlh_pdo_hash;
324 /* Remote regular lock */
325 struct lustre_handle mlh_rreg_lh;
326 enum ldlm_mode mlh_rreg_mode;
330 MDT_LH_PARENT, /* parent lockh */
331 MDT_LH_CHILD, /* child lockh */
332 MDT_LH_OLD, /* old lockh for rename */
333 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
334 MDT_LH_NEW, /* new lockh for rename */
335 MDT_LH_RMT, /* used for return lh to caller */
336 MDT_LH_LOCAL, /* local lock never return to client */
345 /* Special magical errno for communicaiton between mdt_reint_open()
346 * and mdt_intent_reint() which means return the lock to the client
347 * for subsequent cross ref open. Previously we used plain -EREMOTE
348 * but other functions called in that path might return it too and
349 * confuse us. This is not returned to the client. See LU-5370. */
350 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
352 struct mdt_reint_record {
353 enum mds_reint_op rr_opcode;
354 const struct lustre_handle *rr_open_handle;
355 const struct lustre_handle *rr_lease_handle;
356 const struct lu_fid *rr_fid1;
357 const struct lu_fid *rr_fid2;
358 struct lu_name rr_name;
359 struct lu_name rr_tgt_name;
366 enum mdt_reint_flag {
367 MRF_OPEN_TRUNC = 1 << 0,
371 * Common data shared by mdt-level handlers. This is allocated per-thread to
372 * reduce stack consumption.
374 struct mdt_thread_info {
377 * The following members will be filled explicitly
378 * with specific data in mdt_thread_info_init().
380 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
381 * request handling may migrate from one server thread to another.
383 struct req_capsule *mti_pill;
385 /* although we have export in req, there are cases when it is not
386 * available, e.g. closing files upon export destroy */
387 struct obd_export *mti_exp;
389 * A couple of lock handles.
391 struct mdt_lock_handle mti_lh[MDT_LH_NR];
393 struct mdt_device *mti_mdt;
394 const struct lu_env *mti_env;
396 /* transaction number of current request */
402 * The following members will be filled expilictly
403 * with zero in mdt_thread_info_init(). These members may be used
410 struct md_attr mti_attr;
411 struct md_attr mti_attr2; /* mdt_lvb.c */
413 * Body for "habeo corpus" operations.
415 const struct mdt_body *mti_body;
417 * Host object. This is released at the end of mdt_handler().
419 struct mdt_object *mti_object;
421 * Lock request for "habeo clavis" operations.
423 const struct ldlm_request *mti_dlm_req;
425 __u32 mti_has_trans:1, /* has txn already? */
427 /* big_lmm buffer was used and must be used in reply */
432 /* opdata for mdt_reint_open(), has the same as
433 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
434 * value onto disk for recovery when mdt_trans_stop_cb() is called.
440 * The following members will be filled explicitly
441 * with zero in mdt_reint_unpack(), because they are only used
442 * by reint requests (including mdt_reint_open()).
446 * reint record. contains information for reint operations.
448 struct mdt_reint_record mti_rr;
450 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
452 * Operation specification (currently create and lookup)
454 struct md_op_spec mti_spec;
458 * The following members will _NOT_ be initialized at all.
459 * DO NOT expect them to contain any valid value.
460 * They should be initialized explicitly by the user themselves.
463 /* XXX: If something is in a union, make sure they do not conflict */
464 struct lu_fid mti_tmp_fid1;
465 struct lu_fid mti_tmp_fid2;
466 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
467 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
469 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
470 char ns_name[48];/* for mdt_init0() */
471 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
472 struct obd_statfs osfs; /* for mdt_statfs() */
474 /* for mdt_readpage() */
475 struct lu_rdpg mti_rdpg;
476 /* for mdt_sendpage() */
477 struct l_wait_info mti_wait_info;
487 struct lustre_handle mti_open_handle;
489 struct lu_buf mti_buf;
490 struct lu_buf mti_big_buf;
492 /* Ops object filename */
493 struct lu_name mti_name;
494 char mti_filename[NAME_MAX + 1];
495 /* per-thread values, can be re-used, may be vmalloc'd */
500 /* should be enough to fit lustre_mdt_attrs */
501 char mti_xattr_buf[128];
502 struct ldlm_enqueue_info mti_einfo[2];
503 /* einfo used by mdt_remote_object_lock_try() */
504 struct ldlm_enqueue_info mti_remote_einfo;
505 struct tg_reply_data *mti_reply_data;
507 /* FLR: layout change API */
508 struct md_layout_change mti_layout;
511 extern struct lu_context_key mdt_thread_key;
513 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
515 struct mdt_thread_info *mti;
517 lu_env_refill((void *)env);
518 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
523 struct cdt_req_progress {
524 struct mutex crp_lock; /**< protect tree */
525 struct interval_node *crp_root; /**< tree to track extent
527 struct interval_node **crp_node; /**< buffer for tree nodes
528 * vector of fixed size
530 int crp_cnt; /**< # of used nodes */
531 int crp_max; /**< # of allocated nodes */
534 struct cdt_agent_req {
535 struct hlist_node car_cookie_hash; /**< find req by cookie */
536 struct list_head car_request_list; /**< to chain all the req. */
537 atomic_t car_refcount; /**< reference counter */
538 __u64 car_flags; /**< request original flags */
539 struct obd_uuid car_uuid; /**< agent doing the req. */
540 __u32 car_archive_id; /**< archive id */
541 int car_canceled; /**< request was canceled */
542 time64_t car_req_start; /**< start time */
543 time64_t car_req_update; /**< last update time */
544 struct hsm_action_item *car_hai; /**< req. to the agent */
545 struct cdt_req_progress car_progress; /**< track data mvt
548 extern struct kmem_cache *mdt_hsm_car_kmem;
551 struct list_head ha_list; /**< to chain the agents */
552 struct obd_uuid ha_uuid; /**< agent uuid */
553 __u32 *ha_archive_id; /**< archive id */
554 int ha_archive_cnt; /**< number of archive entries
555 * 0 means any archive */
556 atomic_t ha_requests; /**< current request count */
557 atomic_t ha_success; /**< number of successful
559 atomic_t ha_failure; /**< number of failed actions */
562 struct cdt_restore_handle {
563 struct list_head crh_list; /**< to chain the handle */
564 struct lu_fid crh_fid; /**< fid of the object */
565 struct ldlm_extent crh_extent; /**< extent of the restore */
566 struct mdt_lock_handle crh_lh; /**< lock handle */
568 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
570 struct hsm_record_update {
572 enum agent_req_status status;
575 static inline const struct md_device_operations *
576 mdt_child_ops(struct mdt_device * m)
578 LASSERT(m->mdt_child);
579 return m->mdt_child->md_ops;
582 static inline struct md_object *mdt_object_child(struct mdt_object *o)
585 return lu2md(lu_object_next(&o->mot_obj));
588 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
590 return info->mti_pill ? info->mti_pill->rc_req : NULL;
593 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
595 LASSERT(info->mti_exp);
596 return exp_connect_flags(info->mti_exp);
599 static inline void mdt_object_get(const struct lu_env *env,
600 struct mdt_object *o)
603 lu_object_get(&o->mot_obj);
607 static inline void mdt_object_put(const struct lu_env *env,
608 struct mdt_object *o)
611 lu_object_put(env, &o->mot_obj);
615 static inline int mdt_object_exists(const struct mdt_object *o)
617 return lu_object_exists(&o->mot_obj);
620 static inline int mdt_object_remote(const struct mdt_object *o)
622 return lu_object_remote(&o->mot_obj);
625 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
627 return lu_object_fid(&o->mot_obj);
630 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
632 return mdt->mdt_lu_dev.ld_site;
635 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
637 return &mdt->mdt_seq_site;
640 static inline void mdt_export_evict(struct obd_export *exp)
642 class_fail_export(exp);
645 /* Here we use LVB_TYPE to check dne client, because it is
646 * also landed on 2.4. */
647 static inline bool mdt_is_dne_client(struct obd_export *exp)
649 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
652 static inline bool mdt_is_striped_client(struct obd_export *exp)
654 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
663 /* XXX Look into layout in MDT layer. This must be done in LOD. */
664 static inline int mdt_lmm_dom_entry(struct lov_mds_md *lmm)
666 struct lov_comp_md_v1 *comp_v1;
667 struct lov_mds_md *v1;
671 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
674 comp_v1 = (struct lov_comp_md_v1 *)lmm;
675 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
676 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
678 /* DoM entry is the first entry always */
679 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) != LOV_PATTERN_MDT)
682 for (i = 1; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
685 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
686 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
688 for (j = 0; j < le16_to_cpu(v1->lmm_stripe_count); j++) {
689 /* if there is any object on OST */
690 if (le32_to_cpu(v1->lmm_objects[j].l_ost_idx) !=
698 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
700 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
702 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
703 le16_to_cpu(lcm->lcm_mirror_count) > 0;
706 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
708 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
709 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
712 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
713 void mdt_set_disposition(struct mdt_thread_info *info,
714 struct ldlm_reply *rep, __u64 op_flag);
715 void mdt_clear_disposition(struct mdt_thread_info *info,
716 struct ldlm_reply *rep, __u64 op_flag);
718 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
719 const struct lu_name *lname);
721 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
723 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
724 struct mdt_lock_handle *lh);
726 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
727 struct mdt_lock_handle *lhc);
729 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
730 struct mdt_lock_handle *lh, __u64 ibits);
732 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
733 struct mdt_lock_handle *lh, __u64 ibits,
736 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
737 struct mdt_lock_handle *lh, __u64 *ibits,
738 __u64 trybits, bool cos_incompat);
740 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
741 struct mdt_lock_handle *lh, int decref);
742 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
743 enum ldlm_mode mode, int decref);
745 struct mdt_object *mdt_object_new(const struct lu_env *env,
747 const struct lu_fid *);
748 struct mdt_object *mdt_object_find(const struct lu_env *,
750 const struct lu_fid *);
751 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
752 const struct lu_fid *,
753 struct mdt_lock_handle *,
755 void mdt_object_unlock_put(struct mdt_thread_info *,
757 struct mdt_lock_handle *,
760 void mdt_client_compatibility(struct mdt_thread_info *info);
762 int mdt_remote_object_lock(struct mdt_thread_info *mti,
763 struct mdt_object *o, const struct lu_fid *fid,
764 struct lustre_handle *lh,
765 enum ldlm_mode mode, __u64 ibits, bool cache);
766 int mdt_reint_striped_lock(struct mdt_thread_info *info,
767 struct mdt_object *o,
768 struct mdt_lock_handle *lh,
770 struct ldlm_enqueue_info *einfo,
772 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
773 struct mdt_object *o,
774 struct mdt_lock_handle *lh,
775 struct ldlm_enqueue_info *einfo, int decref);
777 enum mdt_name_flags {
781 int mdt_name_unpack(struct req_capsule *pill,
782 const struct req_msg_field *field,
784 enum mdt_name_flags flags);
785 int mdt_close_unpack(struct mdt_thread_info *info);
786 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
787 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
788 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
789 #ifdef CONFIG_FS_POSIX_ACL
790 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
791 struct mdt_object *o, struct lu_nodemap *nodemap);
793 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
794 const struct lu_attr *attr, const struct lu_fid *fid);
795 int mdt_pack_size2body(struct mdt_thread_info *info,
796 const struct lu_fid *fid, struct lustre_handle *lh);
797 int mdt_getxattr(struct mdt_thread_info *info);
798 int mdt_reint_setxattr(struct mdt_thread_info *info,
799 struct mdt_lock_handle *lh);
801 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
802 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
804 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
805 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
806 struct mdt_lock_handle *lhc);
808 extern void target_recovery_fini(struct obd_device *obd);
809 extern void target_recovery_init(struct lu_target *lut,
810 svc_handler_t handler);
811 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
812 struct obd_device *, struct lustre_sb_info *lsi);
813 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
815 int mdt_export_stats_init(struct obd_device *obd,
816 struct obd_export *exp,
819 int mdt_lock_new_child(struct mdt_thread_info *info,
820 struct mdt_object *o,
821 struct mdt_lock_handle *child_lockh);
822 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
823 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
824 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
825 const struct lustre_handle *open_handle,
828 int mdt_get_info(struct tgt_session_info *tsi);
829 int mdt_attr_get_complex(struct mdt_thread_info *info,
830 struct mdt_object *o, struct md_attr *ma);
831 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
833 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
834 struct md_attr *ma, const char *name);
835 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
836 struct lu_fid *pfid);
837 int mdt_write_get(struct mdt_object *o);
838 void mdt_write_put(struct mdt_object *o);
839 int mdt_write_read(struct mdt_object *o);
840 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
841 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
842 void mdt_mfd_free(struct mdt_file_data *mfd);
843 int mdt_close(struct tgt_session_info *tsi);
844 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
846 int mdt_fix_reply(struct mdt_thread_info *info);
847 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
849 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
850 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
851 struct md_layout_change *spec);
852 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
854 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
855 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
856 const void *area, ssize_t len);
858 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
859 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
861 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
862 int mdt_check_ucred(struct mdt_thread_info *);
863 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
864 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
865 int mdt_init_ucred_reint(struct mdt_thread_info *);
866 void mdt_exit_ucred(struct mdt_thread_info *);
867 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
868 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
869 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
871 void mdt_thread_info_init(struct ptlrpc_request *req,
872 struct mdt_thread_info *mti);
873 void mdt_thread_info_fini(struct mdt_thread_info *mti);
874 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
875 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
876 struct ldlm_lock *new_lock,
877 struct mdt_lock_handle *lh, __u64 flags);
878 int mdt_intent_lock_replace(struct mdt_thread_info *info,
879 struct ldlm_lock **lockp,
880 struct mdt_lock_handle *lh,
881 __u64 flags, int result);
883 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
884 const struct md_hsm *mh);
886 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
887 void *data, int flag);
888 int mdt_links_read(struct mdt_thread_info *info,
889 struct mdt_object *mdt_obj,
890 struct linkea_data *ldata);
891 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
892 struct mdt_body *repbody);
893 int mdt_remote_dir_permission(struct mdt_thread_info *info);
895 static inline struct mdt_device *mdt_dev(struct lu_device *d)
897 return container_of0(d, struct mdt_device, mdt_lu_dev);
900 static inline struct mdt_object *mdt_obj(struct lu_object *o)
902 return container_of0(o, struct mdt_object, mot_obj);
905 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
907 struct lu_object *lo;
908 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
910 lo = lu_object_locate(mo->mot_obj.lo_header,
911 mdt->mdt_bottom->dd_lu_dev.ld_type);
916 static inline bool agent_req_in_final_state(enum agent_req_status ars)
918 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
919 (ars == ARS_CANCELED));
922 /* mdt/mdt_identity.c */
923 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
925 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
927 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
929 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
931 void mdt_flush_identity(struct upcall_cache *, int);
933 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
935 /* mdt/mdt_recovery.c */
936 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
939 int mdt_hsm_state_get(struct tgt_session_info *tsi);
940 int mdt_hsm_state_set(struct tgt_session_info *tsi);
941 int mdt_hsm_action(struct tgt_session_info *tsi);
942 int mdt_hsm_progress(struct tgt_session_info *tsi);
943 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
944 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
945 int mdt_hsm_request(struct tgt_session_info *tsi);
947 /* mdt/mdt_hsm_cdt_actions.c */
948 extern const struct file_operations mdt_hsm_actions_fops;
949 void dump_llog_agent_req_rec(const char *prefix,
950 const struct llog_agent_req_rec *larr);
951 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
952 llog_cb_t cb, void *data, u32 start_cat_idx,
953 u32 start_rec_idx, int rw);
954 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
955 __u32 archive_id, __u64 flags,
956 struct hsm_action_item *hai);
957 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
958 struct hsm_record_update *updates,
959 unsigned int updates_count);
960 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
962 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
963 u32 *cat_idt, u32 *rec_idx);
964 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
966 /* mdt/mdt_hsm_cdt_agent.c */
967 extern const struct file_operations mdt_hsm_agent_fops;
968 int mdt_hsm_agent_register(struct mdt_thread_info *info,
969 const struct obd_uuid *uuid,
970 int nr_archives, __u32 *archive_num);
971 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
972 const struct obd_uuid *uuid,
974 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
975 const struct obd_uuid *uuid);
976 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
977 int succ_rq, int fail_rq, int new_rq,
978 const struct obd_uuid *uuid);
979 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
980 struct obd_uuid *uuid);
981 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
983 /* mdt/mdt_hsm_cdt_client.c */
984 int mdt_hsm_add_actions(struct mdt_thread_info *info,
985 struct hsm_action_list *hal);
986 int mdt_hsm_get_action(struct mdt_thread_info *mti,
987 const struct lu_fid *fid,
988 enum hsm_copytool_action *action,
989 enum agent_req_status *status,
990 struct hsm_extent *extent);
991 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
992 const struct lu_fid *fid);
993 /* mdt/mdt_hsm_cdt_requests.c */
994 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
995 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
996 extern const struct file_operations mdt_hsm_active_requests_fops;
997 void dump_requests(char *prefix, struct coordinator *cdt);
998 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
999 struct obd_uuid *uuid,
1000 struct hsm_action_item *hai);
1001 void mdt_cdt_free_request(struct cdt_agent_req *car);
1002 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1003 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1004 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
1005 void mdt_cdt_get_request(struct cdt_agent_req *car);
1006 void mdt_cdt_put_request(struct cdt_agent_req *car);
1007 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1008 const struct hsm_progress_kernel *pgs);
1009 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1010 /* mdt/mdt_coordinator.c */
1011 void mdt_hsm_dump_hal(int level, const char *prefix,
1012 struct hsm_action_list *hal);
1013 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1014 const struct lu_fid *fid,
1015 const struct hsm_extent *he);
1016 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1017 const struct lu_fid *fid);
1018 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1019 struct coordinator *cdt, const struct lu_fid *fid);
1020 /* coordinator management */
1021 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1022 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1023 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1026 * Signal the coordinator has work to do
1027 * \param cdt [IN] coordinator
1029 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1031 cdt->cdt_event = true;
1034 /* coordinator control /proc interface */
1035 ssize_t mdt_hsm_cdt_control_seq_write(struct file *file,
1036 const char __user *buffer,
1037 size_t count, loff_t *off);
1038 int mdt_hsm_cdt_control_seq_show(struct seq_file *m, void *data);
1039 int hsm_cdt_procfs_init(struct mdt_device *mdt);
1040 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
1041 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
1042 /* md_hsm helpers */
1043 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1044 const struct lu_fid *fid,
1045 struct md_hsm *hsm);
1046 /* actions/request helpers */
1047 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1048 struct hsm_action_list *hal, struct obd_uuid *uuid);
1049 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1050 u32 archive_id, u64 rq_flags,
1051 const struct md_hsm *hsm);
1052 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1053 struct hsm_progress_kernel *pgs);
1055 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1056 struct mdt_object *o, struct md_attr *ma);
1058 extern struct lu_context_key mdt_thread_key;
1060 /* debug issues helper starts here*/
1061 static inline int mdt_fail_write(const struct lu_env *env,
1062 struct dt_device *dd, int id)
1064 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1065 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1067 return dt_ro(env, dd);
1068 /* We set FAIL_ONCE because we never "un-fail" a device */
1074 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1076 return &req->rq_export->exp_mdt_data;
1079 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1081 return mdt_dev(exp->exp_obd->obd_lu_dev);
1084 static inline bool mdt_rdonly(struct obd_export *exp)
1086 if (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1087 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly)
1092 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1093 struct mdt_lock_handle *lhc);
1094 static inline int mdt_check_resent(struct mdt_thread_info *info,
1095 mdt_reconstruct_t reconstruct,
1096 struct mdt_lock_handle *lhc)
1098 struct ptlrpc_request *req = mdt_info_req(info);
1102 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1103 OBD_ALLOC_PTR(info->mti_reply_data);
1104 if (info->mti_reply_data == NULL)
1107 if (req_can_reconstruct(req, info->mti_reply_data)) {
1108 reconstruct(info, lhc);
1111 DEBUG_REQ(D_HA, req,
1112 "no reply data found for RESENT req");
1115 OBD_FREE_PTR(info->mti_reply_data);
1116 info->mti_reply_data = NULL;
1121 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1122 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1124 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1126 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1129 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1131 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1133 return -ELDLM_NO_LOCK_DATA;
1136 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1137 static inline int mdt_fid_lock(const struct lu_env *env,
1138 struct ldlm_namespace *ns,
1139 struct lustre_handle *lh, enum ldlm_mode mode,
1140 union ldlm_policy_data *policy,
1141 const struct ldlm_res_id *res_id,
1142 __u64 flags, const __u64 *client_cookie)
1145 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1147 LASSERT(ns != NULL);
1148 LASSERT(lh != NULL);
1150 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1151 mode, &flags, mdt_blocking_ast,
1152 ldlm_completion_ast,
1153 glimpse ? mdt_dom_glimpse_ast : NULL,
1154 NULL, 0, LVB_T_NONE, client_cookie, lh);
1155 return rc == ELDLM_OK ? 0 : -EIO;
1158 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1160 ldlm_lock_decref(lh, mode);
1163 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1165 return mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL;
1168 extern mdl_mode_t mdt_mdl_lock_modes[];
1169 extern enum ldlm_mode mdt_dlm_lock_modes[];
1171 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1173 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1175 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1176 return mdt_mdl_lock_modes[mode];
1179 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1181 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1182 return mdt_dlm_lock_modes[mode];
1186 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1187 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1188 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1189 struct md_attr *ma);
1190 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1191 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1195 extern struct ldlm_valblock_ops mdt_lvbo;
1196 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1197 int mdt_dom_lvbo_update(const struct lu_env *env, struct ldlm_resource *res,
1198 struct ldlm_lock *lock, struct ptlrpc_request *req,
1199 bool increase_only);
1201 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1202 int mdt_cos_is_enabled(struct mdt_device *);
1220 LPROC_MDT_SAMEDIR_RENAME,
1221 LPROC_MDT_CROSSDIR_RENAME,
1228 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1229 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1230 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1231 void mdt_procfs_fini(struct mdt_device *mdt);
1233 /* lustre/mdt_mdt_lproc.c */
1234 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1236 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1237 struct mdt_device *mdt,
1238 struct ptlrpc_request *req,
1239 struct mdt_object *src, struct mdt_object *tgt);
1241 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1243 return mdt->mdt_lu_dev.ld_obd;
1246 extern const struct lu_device_operations mdt_lu_ops;
1248 static inline char *mdt_obd_name(struct mdt_device *mdt)
1250 return mdt->mdt_lu_dev.ld_obd->obd_name;
1253 int mds_mod_init(void);
1254 void mds_mod_exit(void);
1256 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1258 struct obd_export *exp = req->rq_export;
1261 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1262 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1269 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1270 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1272 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1273 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1274 struct niobuf_remote *rnb, int *nr_local,
1275 struct niobuf_local *lnb);
1277 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1278 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1279 struct niobuf_remote *rnb, int npages,
1280 struct niobuf_local *lnb, int old_rc);
1281 int mdt_punch_hdl(struct tgt_session_info *tsi);
1282 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1283 struct ldlm_lock **lockp, __u64 flags);
1284 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1285 struct ldlm_lock **lockp, __u64 flags);
1286 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1287 struct lustre_handle *lh);
1288 void mdt_dom_discard_data(struct mdt_thread_info *info,
1289 const struct lu_fid *fid);
1290 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1291 struct ldlm_resource *res, bool increase_only);
1292 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1293 bool increase_only);
1294 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1296 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1297 struct mdt_object *mo)
1299 return lu_object_is_dying(&mo->mot_header) &&
1300 S_ISREG(lu_object_attr(&mo->mot_obj));
1303 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1304 const struct lu_fid *fid, struct mdt_body *mb,
1306 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1307 const struct lu_fid *fid);
1308 void mdt_hp_brw(struct tgt_session_info *tsi);
1309 void mdt_hp_punch(struct tgt_session_info *tsi);
1310 int mdt_data_version_get(struct tgt_session_info *tsi);
1313 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1314 u64 want, bool conservative);
1315 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1317 #endif /* _MDT_INTERNAL_H */