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, 2016, 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_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_old_handle;
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 spinlock_t cdt_state_lock; /**< cdt_state lock */
139 atomic_t cdt_compound_id; /**< compound id
141 __u64 cdt_last_cookie; /**< last cookie
143 struct rw_semaphore cdt_llog_lock; /**< protect llog
145 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
146 struct rw_semaphore cdt_request_lock; /**< protect request
148 struct mutex cdt_restore_lock; /**< protect restore
150 time64_t cdt_loop_period; /**< llog scan period */
151 time64_t cdt_grace_delay; /**< request grace
153 time64_t cdt_active_req_timeout; /**< request timeout */
154 __u32 cdt_default_archive_id; /**< archive id used
157 __u64 cdt_max_requests; /**< max count of started
159 atomic_t cdt_request_count; /**< current count of
160 * started requests */
161 /* started requests (struct cdt_agent_req:car_cookie_hash)
162 * indexed by cookie */
163 struct cfs_hash *cdt_request_cookie_hash;
164 /* started requests (struct cdt_agent_req:car_request_list) */
165 struct list_head cdt_request_list;
166 struct list_head cdt_agents; /**< list of register
168 struct list_head cdt_restore_hdl; /**< list of restore lock
171 /* Hash of cookies to locations of record locations in agent
173 struct cfs_hash *cdt_agent_record_hash;
175 /* Bitmasks indexed by the HSMA_XXX constants. */
176 __u64 cdt_user_request_mask;
177 __u64 cdt_group_request_mask;
178 __u64 cdt_other_request_mask;
180 /* Remove archive on last unlink policy */
181 bool cdt_remove_archive_on_last_unlink;
183 bool cdt_wakeup_coordinator;
186 /* mdt state flag bits */
187 #define MDT_FL_CFGLOG 0
188 #define MDT_FL_SYNCED 1
192 struct lu_device mdt_lu_dev;
193 struct seq_server_site mdt_seq_site;
194 /* DLM name-space for meta-data locks maintained by this server */
195 struct ldlm_namespace *mdt_namespace;
196 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
197 struct ptlrpc_client *mdt_ldlm_client;
198 /* underlying device */
199 struct obd_export *mdt_child_exp;
200 struct md_device *mdt_child;
201 struct dt_device *mdt_bottom;
202 struct obd_export *mdt_bottom_exp;
204 struct lu_target mdt_lut;
206 * Options bit-fields.
209 unsigned int mo_user_xattr:1,
215 /* mdt state flags */
216 unsigned long mdt_state;
218 /* transaction callbacks */
219 struct dt_txn_callback mdt_txn_cb;
221 /* these values should be updated from lov if necessary.
222 * or should be placed somewhere else. */
227 /* preferred BRW size, decided by storage type and capability */
230 struct upcall_cache *mdt_identity_cache;
232 unsigned int mdt_capa_conf:1,
233 /* Enable remote dir on non-MDT0 */
234 mdt_enable_remote_dir:1,
237 gid_t mdt_enable_remote_dir_gid;
239 /* lock for osfs and md_root */
243 struct root_squash_info mdt_squash;
245 struct rename_stats mdt_rename_stats;
246 struct lu_fid mdt_md_root_fid;
248 /* connection to quota master */
249 struct obd_export *mdt_qmt_exp;
250 /* quota master device associated with this MDT */
251 struct lu_device *mdt_qmt_dev;
253 struct coordinator mdt_coordinator;
255 /* inter-MDT connection count */
256 atomic_t mdt_mds_mds_conns;
258 /* MDT device async commit count, used for debug and sanity test */
259 atomic_t mdt_async_commit_count;
261 struct mdt_object *mdt_md_root;
264 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
265 #define MDT_COS_DEFAULT (0)
267 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
270 struct lu_object_header mot_header;
271 struct lu_object mot_obj;
272 unsigned int mot_lov_created:1, /* lov object created */
273 mot_cache_attr:1; /* enable remote object
276 spinlock_t mot_write_lock;
277 /* Lock to protect create_data */
278 struct mutex mot_lov_mutex;
279 /* lock to protect read/write stages for Data-on-MDT files */
280 struct rw_semaphore mot_dom_sem;
281 /* Lock to protect lease open.
282 * Lease open acquires write lock; normal open acquires read lock */
283 struct rw_semaphore mot_open_sem;
284 atomic_t mot_lease_count;
285 atomic_t mot_open_count;
288 struct mdt_lock_handle {
289 /* Lock type, reg for cross-ref use or pdo lock. */
293 struct lustre_handle mlh_reg_lh;
294 enum ldlm_mode mlh_reg_mode;
297 struct lustre_handle mlh_pdo_lh;
298 enum ldlm_mode mlh_pdo_mode;
299 unsigned int mlh_pdo_hash;
301 /* Remote regular lock */
302 struct lustre_handle mlh_rreg_lh;
303 enum ldlm_mode mlh_rreg_mode;
307 MDT_LH_PARENT, /* parent lockh */
308 MDT_LH_CHILD, /* child lockh */
309 MDT_LH_OLD, /* old lockh for rename */
310 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
311 MDT_LH_NEW, /* new lockh for rename */
312 MDT_LH_RMT, /* used for return lh to caller */
313 MDT_LH_LOCAL, /* local lock never return to client */
322 /* Special magical errno for communicaiton between mdt_reint_open()
323 * and mdt_intent_reint() which means return the lock to the client
324 * for subsequent cross ref open. Previously we used plain -EREMOTE
325 * but other functions called in that path might return it too and
326 * confuse us. This is not returned to the client. See LU-5370. */
327 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
329 struct mdt_reint_record {
330 enum mds_reint_op rr_opcode;
331 const struct lustre_handle *rr_handle;
332 const struct lu_fid *rr_fid1;
333 const struct lu_fid *rr_fid2;
334 struct lu_name rr_name;
335 struct lu_name rr_tgt_name;
341 enum mdt_reint_flag {
342 MRF_OPEN_TRUNC = 1 << 0,
346 * Common data shared by mdt-level handlers. This is allocated per-thread to
347 * reduce stack consumption.
349 struct mdt_thread_info {
352 * The following members will be filled explicitly
353 * with specific data in mdt_thread_info_init().
355 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
356 * request handling may migrate from one server thread to another.
358 struct req_capsule *mti_pill;
360 /* although we have export in req, there are cases when it is not
361 * available, e.g. closing files upon export destroy */
362 struct obd_export *mti_exp;
364 * A couple of lock handles.
366 struct mdt_lock_handle mti_lh[MDT_LH_NR];
368 struct mdt_device *mti_mdt;
369 const struct lu_env *mti_env;
371 /* transaction number of current request */
377 * The following members will be filled expilictly
378 * with zero in mdt_thread_info_init(). These members may be used
385 struct md_attr mti_attr;
387 * Body for "habeo corpus" operations.
389 const struct mdt_body *mti_body;
391 * Host object. This is released at the end of mdt_handler().
393 struct mdt_object *mti_object;
395 * Lock request for "habeo clavis" operations.
397 const struct ldlm_request *mti_dlm_req;
399 __u32 mti_has_trans:1, /* has txn already? */
401 /* big_lmm buffer was used and must be used in reply */
405 /* opdata for mdt_reint_open(), has the same as
406 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
407 * value onto disk for recovery when mdt_trans_stop_cb() is called.
413 * The following members will be filled explicitly
414 * with zero in mdt_reint_unpack(), because they are only used
415 * by reint requests (including mdt_reint_open()).
419 * reint record. contains information for reint operations.
421 struct mdt_reint_record mti_rr;
423 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
425 * Operation specification (currently create and lookup)
427 struct md_op_spec mti_spec;
431 * The following members will _NOT_ be initialized at all.
432 * DO NOT expect them to contain any valid value.
433 * They should be initialized explicitly by the user themselves.
436 /* XXX: If something is in a union, make sure they do not conflict */
437 struct lu_fid mti_tmp_fid1;
438 struct lu_fid mti_tmp_fid2;
439 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
440 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
442 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
443 char ns_name[48];/* for mdt_init0() */
444 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
445 struct obd_statfs osfs; /* for mdt_statfs() */
447 /* for mdt_readpage() */
448 struct lu_rdpg mti_rdpg;
449 /* for mdt_sendpage() */
450 struct l_wait_info mti_wait_info;
457 struct lustre_handle mti_close_handle;
459 struct lu_buf mti_buf;
460 struct lu_buf mti_big_buf;
462 /* Ops object filename */
463 struct lu_name mti_name;
464 /* per-thread values, can be re-used, may be vmalloc'd */
469 /* should be enough to fit lustre_mdt_attrs */
470 char mti_xattr_buf[128];
471 struct ldlm_enqueue_info mti_einfo;
472 struct tg_reply_data *mti_reply_data;
475 extern struct lu_context_key mdt_thread_key;
477 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
479 struct mdt_thread_info *mti;
481 lu_env_refill((void *)env);
482 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
487 struct cdt_req_progress {
488 struct mutex crp_lock; /**< protect tree */
489 struct interval_node *crp_root; /**< tree to track extent
491 struct interval_node **crp_node; /**< buffer for tree nodes
492 * vector of fixed size
494 int crp_cnt; /**< # of used nodes */
495 int crp_max; /**< # of allocated nodes */
498 struct cdt_agent_req {
499 struct hlist_node car_cookie_hash; /**< find req by cookie */
500 struct list_head car_request_list; /**< to chain all the req. */
501 atomic_t car_refcount; /**< reference counter */
502 __u64 car_compound_id; /**< compound id */
503 __u64 car_flags; /**< request original flags */
504 struct obd_uuid car_uuid; /**< agent doing the req. */
505 __u32 car_archive_id; /**< archive id */
506 int car_canceled; /**< request was canceled */
507 time64_t car_req_start; /**< start time */
508 time64_t car_req_update; /**< last update time */
509 struct hsm_action_item *car_hai; /**< req. to the agent */
510 struct cdt_req_progress car_progress; /**< track data mvt
513 extern struct kmem_cache *mdt_hsm_car_kmem;
516 struct list_head ha_list; /**< to chain the agents */
517 struct obd_uuid ha_uuid; /**< agent uuid */
518 __u32 *ha_archive_id; /**< archive id */
519 int ha_archive_cnt; /**< number of archive entries
520 * 0 means any archive */
521 atomic_t ha_requests; /**< current request count */
522 atomic_t ha_success; /**< number of successful
524 atomic_t ha_failure; /**< number of failed actions */
527 struct cdt_restore_handle {
528 struct list_head crh_list; /**< to chain the handle */
529 struct lu_fid crh_fid; /**< fid of the object */
530 struct ldlm_extent crh_extent; /**< extent of the restore */
531 struct mdt_lock_handle crh_lh; /**< lock handle */
533 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
535 struct hsm_record_update {
537 enum agent_req_status status;
540 static inline const struct md_device_operations *
541 mdt_child_ops(struct mdt_device * m)
543 LASSERT(m->mdt_child);
544 return m->mdt_child->md_ops;
547 static inline struct md_object *mdt_object_child(struct mdt_object *o)
550 return lu2md(lu_object_next(&o->mot_obj));
553 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
555 return info->mti_pill ? info->mti_pill->rc_req : NULL;
558 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
560 LASSERT(info->mti_exp);
561 return exp_connect_flags(info->mti_exp);
564 static inline void mdt_object_get(const struct lu_env *env,
565 struct mdt_object *o)
568 lu_object_get(&o->mot_obj);
572 static inline void mdt_object_put(const struct lu_env *env,
573 struct mdt_object *o)
576 lu_object_put(env, &o->mot_obj);
580 static inline int mdt_object_exists(const struct mdt_object *o)
582 return lu_object_exists(&o->mot_obj);
585 static inline int mdt_object_remote(const struct mdt_object *o)
587 return lu_object_remote(&o->mot_obj);
590 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
592 return lu_object_fid(&o->mot_obj);
595 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
597 return mdt->mdt_lu_dev.ld_site;
600 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
602 return &mdt->mdt_seq_site;
605 static inline void mdt_export_evict(struct obd_export *exp)
607 class_fail_export(exp);
610 /* Here we use LVB_TYPE to check dne client, because it is
611 * also landed on 2.4. */
612 static inline bool mdt_is_dne_client(struct obd_export *exp)
614 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
617 static inline bool mdt_is_striped_client(struct obd_export *exp)
619 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
628 /* XXX Look into layout in MDT layer. This must be done in LOD. */
629 static inline int mdt_lmm_dom_entry(struct lov_mds_md *lmm)
631 struct lov_comp_md_v1 *comp_v1;
632 struct lov_mds_md *v1;
635 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
636 comp_v1 = (struct lov_comp_md_v1 *)lmm;
637 v1 = (struct lov_mds_md *)((char *)comp_v1 +
638 comp_v1->lcm_entries[0].lcme_offset);
639 /* DoM entry is the first entry always */
640 if (lov_pattern(v1->lmm_pattern) != LOV_PATTERN_MDT)
643 for (i = 1; i < comp_v1->lcm_entry_count; i++) {
646 v1 = (struct lov_mds_md *)((char *)comp_v1 +
647 comp_v1->lcm_entries[i].lcme_offset);
648 for (j = 0; j < v1->lmm_stripe_count; j++) {
649 /* if there is any object on OST */
650 if (v1->lmm_objects[j].l_ost_idx !=
660 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
661 void mdt_set_disposition(struct mdt_thread_info *info,
662 struct ldlm_reply *rep, __u64 op_flag);
663 void mdt_clear_disposition(struct mdt_thread_info *info,
664 struct ldlm_reply *rep, __u64 op_flag);
666 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
667 const struct lu_name *lname);
669 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
671 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
672 struct mdt_lock_handle *lh);
674 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
675 struct mdt_lock_handle *lhc);
677 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
678 struct mdt_lock_handle *lh, __u64 ibits);
680 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
681 struct mdt_lock_handle *lh, __u64 ibits,
684 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
685 struct mdt_lock_handle *lh, __u64 *ibits,
686 __u64 trybits, bool cos_incompat);
688 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
689 struct mdt_lock_handle *lh, int decref);
690 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
691 enum ldlm_mode mode, int decref);
693 struct mdt_object *mdt_object_new(const struct lu_env *env,
695 const struct lu_fid *);
696 struct mdt_object *mdt_object_find(const struct lu_env *,
698 const struct lu_fid *);
699 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
700 const struct lu_fid *,
701 struct mdt_lock_handle *,
703 void mdt_object_unlock_put(struct mdt_thread_info *,
705 struct mdt_lock_handle *,
708 void mdt_client_compatibility(struct mdt_thread_info *info);
710 int mdt_remote_object_lock(struct mdt_thread_info *mti,
711 struct mdt_object *o, const struct lu_fid *fid,
712 struct lustre_handle *lh,
713 enum ldlm_mode mode, __u64 ibits, bool cache);
715 enum mdt_name_flags {
719 int mdt_name_unpack(struct req_capsule *pill,
720 const struct req_msg_field *field,
722 enum mdt_name_flags flags);
723 int mdt_close_unpack(struct mdt_thread_info *info);
724 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
725 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
726 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
727 #ifdef CONFIG_FS_POSIX_ACL
728 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
729 struct mdt_object *o, struct lu_nodemap *nodemap);
731 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
732 const struct lu_attr *attr, const struct lu_fid *fid);
733 int mdt_pack_size2body(struct mdt_thread_info *info,
734 const struct lu_fid *fid, bool dom_lock);
735 int mdt_getxattr(struct mdt_thread_info *info);
736 int mdt_reint_setxattr(struct mdt_thread_info *info,
737 struct mdt_lock_handle *lh);
739 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
740 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
742 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
743 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
744 struct mdt_lock_handle *lhc);
746 extern void target_recovery_fini(struct obd_device *obd);
747 extern void target_recovery_init(struct lu_target *lut,
748 svc_handler_t handler);
749 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
750 struct obd_device *, struct lustre_sb_info *lsi);
751 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
753 int mdt_export_stats_init(struct obd_device *obd,
754 struct obd_export *exp,
757 int mdt_lock_new_child(struct mdt_thread_info *info,
758 struct mdt_object *o,
759 struct mdt_lock_handle *child_lockh);
761 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
764 int mdt_reint_open(struct mdt_thread_info *info,
765 struct mdt_lock_handle *lhc);
767 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
768 const struct lustre_handle *handle,
771 int mdt_get_info(struct tgt_session_info *tsi);
772 int mdt_attr_get_complex(struct mdt_thread_info *info,
773 struct mdt_object *o, struct md_attr *ma);
774 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
776 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
777 struct md_attr *ma, const char *name);
778 int mdt_write_get(struct mdt_object *o);
779 void mdt_write_put(struct mdt_object *o);
780 int mdt_write_read(struct mdt_object *o);
781 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
782 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
783 void mdt_mfd_free(struct mdt_file_data *mfd);
784 int mdt_close(struct tgt_session_info *tsi);
785 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
787 int mdt_fix_reply(struct mdt_thread_info *info);
788 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
790 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
792 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
793 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
794 const void *area, ssize_t len);
796 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
797 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
799 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
800 int mdt_check_ucred(struct mdt_thread_info *);
801 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
802 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
803 int mdt_init_ucred_reint(struct mdt_thread_info *);
804 void mdt_exit_ucred(struct mdt_thread_info *);
805 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
806 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
807 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
809 void mdt_thread_info_init(struct ptlrpc_request *req,
810 struct mdt_thread_info *mti);
811 void mdt_thread_info_fini(struct mdt_thread_info *mti);
812 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
813 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
814 struct ldlm_lock *new_lock,
815 struct mdt_lock_handle *lh, __u64 flags);
816 int mdt_intent_lock_replace(struct mdt_thread_info *info,
817 struct ldlm_lock **lockp,
818 struct mdt_lock_handle *lh,
819 __u64 flags, int result);
821 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
822 const struct md_hsm *mh);
824 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
825 void *data, int flag);
826 int mdt_links_read(struct mdt_thread_info *info,
827 struct mdt_object *mdt_obj,
828 struct linkea_data *ldata);
829 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
830 struct mdt_body *repbody);
832 static inline struct mdt_device *mdt_dev(struct lu_device *d)
834 return container_of0(d, struct mdt_device, mdt_lu_dev);
837 static inline struct mdt_object *mdt_obj(struct lu_object *o)
839 return container_of0(o, struct mdt_object, mot_obj);
842 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
844 struct lu_object *lo;
845 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
847 lo = lu_object_locate(mo->mot_obj.lo_header,
848 mdt->mdt_bottom->dd_lu_dev.ld_type);
853 static inline bool agent_req_in_final_state(enum agent_req_status ars)
855 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
856 (ars == ARS_CANCELED));
859 /* mdt/mdt_identity.c */
860 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
862 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
864 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
866 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
868 void mdt_flush_identity(struct upcall_cache *, int);
870 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
872 /* mdt/mdt_recovery.c */
873 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
876 int mdt_hsm_state_get(struct tgt_session_info *tsi);
877 int mdt_hsm_state_set(struct tgt_session_info *tsi);
878 int mdt_hsm_action(struct tgt_session_info *tsi);
879 int mdt_hsm_progress(struct tgt_session_info *tsi);
880 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
881 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
882 int mdt_hsm_request(struct tgt_session_info *tsi);
884 /* mdt/mdt_hsm_cdt_actions.c */
885 extern const struct file_operations mdt_hsm_actions_fops;
886 void dump_llog_agent_req_rec(const char *prefix,
887 const struct llog_agent_req_rec *larr);
888 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
889 llog_cb_t cb, void *data, u32 start_cat_idx,
890 u32 start_rec_idx, int rw);
891 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
892 __u64 compound_id, __u32 archive_id,
893 __u64 flags, struct hsm_action_item *hai);
894 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
895 struct hsm_record_update *updates,
896 unsigned int updates_count);
897 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
899 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
900 u32 *cat_idt, u32 *rec_idx);
901 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
903 /* mdt/mdt_hsm_cdt_agent.c */
904 extern const struct file_operations mdt_hsm_agent_fops;
905 int mdt_hsm_agent_register(struct mdt_thread_info *info,
906 const struct obd_uuid *uuid,
907 int nr_archives, __u32 *archive_num);
908 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
909 const struct obd_uuid *uuid,
911 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
912 const struct obd_uuid *uuid);
913 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
914 int succ_rq, int fail_rq, int new_rq,
915 const struct obd_uuid *uuid);
916 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
917 struct obd_uuid *uuid);
918 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
920 int mdt_hsm_coordinator_update(struct mdt_thread_info *mti,
921 struct hsm_progress_kernel *pgs);
922 /* mdt/mdt_hsm_cdt_client.c */
923 int mdt_hsm_add_actions(struct mdt_thread_info *info,
924 struct hsm_action_list *hal);
925 int mdt_hsm_get_actions(struct mdt_thread_info *mti,
926 struct hsm_action_list *hal);
927 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
928 const struct lu_fid *fid);
929 /* mdt/mdt_hsm_cdt_requests.c */
930 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
931 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
932 extern const struct file_operations mdt_hsm_active_requests_fops;
933 void dump_requests(char *prefix, struct coordinator *cdt);
934 struct cdt_agent_req *mdt_cdt_alloc_request(__u64 compound_id, __u32 archive_id,
935 __u64 flags, struct obd_uuid *uuid,
936 struct hsm_action_item *hai);
937 void mdt_cdt_free_request(struct cdt_agent_req *car);
938 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
939 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
940 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
941 void mdt_cdt_get_request(struct cdt_agent_req *car);
942 void mdt_cdt_put_request(struct cdt_agent_req *car);
943 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
944 const struct hsm_progress_kernel *pgs);
945 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
946 /* mdt/mdt_coordinator.c */
947 void mdt_hsm_dump_hal(int level, const char *prefix,
948 struct hsm_action_list *hal);
949 struct cdt_restore_handle *mdt_hsm_restore_hdl_find(struct coordinator *cdt,
950 const struct lu_fid *fid);
951 /* coordinator management */
952 int mdt_hsm_cdt_init(struct mdt_device *mdt);
953 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
954 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
957 * Signal the coordinator has work to do
958 * \param cdt [IN] coordinator
960 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
962 cdt->cdt_event = true;
965 /* coordinator control /proc interface */
966 ssize_t mdt_hsm_cdt_control_seq_write(struct file *file,
967 const char __user *buffer,
968 size_t count, loff_t *off);
969 int mdt_hsm_cdt_control_seq_show(struct seq_file *m, void *data);
970 int hsm_cdt_procfs_init(struct mdt_device *mdt);
971 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
972 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
974 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
975 const struct lu_fid *fid,
977 /* actions/request helpers */
978 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
979 struct hsm_action_list *hal, struct obd_uuid *uuid);
980 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
981 u32 archive_id, u64 rq_flags,
982 const struct md_hsm *hsm);
983 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
984 struct hsm_progress_kernel *pgs,
985 const int update_record);
987 int mdt_close_swap_layouts(struct mdt_thread_info *info,
988 struct mdt_object *o, struct md_attr *ma);
990 extern struct lu_context_key mdt_thread_key;
992 /* debug issues helper starts here*/
993 static inline int mdt_fail_write(const struct lu_env *env,
994 struct dt_device *dd, int id)
996 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
997 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
999 return dt_ro(env, dd);
1000 /* We set FAIL_ONCE because we never "un-fail" a device */
1006 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1008 return &req->rq_export->exp_mdt_data;
1011 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1013 return mdt_dev(exp->exp_obd->obd_lu_dev);
1016 static inline bool mdt_rdonly(struct obd_export *exp)
1018 if (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1019 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly)
1024 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1025 struct mdt_lock_handle *lhc);
1026 static inline int mdt_check_resent(struct mdt_thread_info *info,
1027 mdt_reconstruct_t reconstruct,
1028 struct mdt_lock_handle *lhc)
1030 struct ptlrpc_request *req = mdt_info_req(info);
1034 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1035 OBD_ALLOC_PTR(info->mti_reply_data);
1036 if (info->mti_reply_data == NULL)
1039 if (req_can_reconstruct(req, info->mti_reply_data)) {
1040 reconstruct(info, lhc);
1043 DEBUG_REQ(D_HA, req,
1044 "no reply data found for RESENT req");
1047 OBD_FREE_PTR(info->mti_reply_data);
1048 info->mti_reply_data = NULL;
1053 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1054 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1056 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1058 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1061 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1063 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1065 return -ELDLM_NO_LOCK_DATA;
1068 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1069 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
1070 struct lustre_handle *lh, enum ldlm_mode mode,
1071 union ldlm_policy_data *policy,
1072 const struct ldlm_res_id *res_id,
1073 __u64 flags, const __u64 *client_cookie)
1076 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1078 LASSERT(ns != NULL);
1079 LASSERT(lh != NULL);
1081 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
1082 mode, &flags, mdt_blocking_ast,
1083 ldlm_completion_ast,
1084 glimpse ? mdt_dom_glimpse_ast : NULL,
1085 NULL, 0, LVB_T_NONE, client_cookie, lh);
1086 return rc == ELDLM_OK ? 0 : -EIO;
1089 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1091 ldlm_lock_decref(lh, mode);
1094 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1096 return mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL;
1099 extern mdl_mode_t mdt_mdl_lock_modes[];
1100 extern enum ldlm_mode mdt_dlm_lock_modes[];
1102 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1104 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1106 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1107 return mdt_mdl_lock_modes[mode];
1110 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1112 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1113 return mdt_dlm_lock_modes[mode];
1117 extern struct ldlm_valblock_ops mdt_lvbo;
1118 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1119 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1120 struct ptlrpc_request *req, bool increase_only);
1122 void mdt_enable_cos(struct mdt_device *, int);
1123 int mdt_cos_is_enabled(struct mdt_device *);
1141 LPROC_MDT_SAMEDIR_RENAME,
1142 LPROC_MDT_CROSSDIR_RENAME,
1148 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1149 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1150 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1151 void mdt_procfs_fini(struct mdt_device *mdt);
1153 /* lustre/mdt_mdt_lproc.c */
1154 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1156 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1157 struct mdt_device *mdt,
1158 struct ptlrpc_request *req,
1159 struct mdt_object *src, struct mdt_object *tgt);
1161 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1163 return mdt->mdt_lu_dev.ld_obd;
1166 extern const struct lu_device_operations mdt_lu_ops;
1168 static inline char *mdt_obd_name(struct mdt_device *mdt)
1170 return mdt->mdt_lu_dev.ld_obd->obd_name;
1173 int mds_mod_init(void);
1174 void mds_mod_exit(void);
1176 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1178 struct obd_export *exp = req->rq_export;
1181 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1182 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1189 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1190 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1192 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1193 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1194 struct niobuf_remote *rnb, int *nr_local,
1195 struct niobuf_local *lnb);
1197 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1198 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1199 struct niobuf_remote *rnb, int npages,
1200 struct niobuf_local *lnb, int old_rc);
1201 int mdt_punch_hdl(struct tgt_session_info *tsi);
1202 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1203 struct ldlm_lock **lockp, __u64 flags);
1204 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1205 struct ldlm_lock **lockp, __u64 flags);
1206 void mdt_dom_discard_data(struct mdt_thread_info *info,
1207 const struct lu_fid *fid);
1208 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1209 struct ldlm_resource *res, bool increase_only);
1210 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1211 bool increase_only);
1212 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1214 static inline void mdt_dom_check_and_discard(struct mdt_thread_info *mti,
1215 struct mdt_object *mo)
1217 if (lu_object_is_dying(&mo->mot_header) &&
1218 S_ISREG(lu_object_attr(&mo->mot_obj)))
1219 mdt_dom_discard_data(mti, mdt_object_fid(mo));
1222 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1223 const struct lu_fid *fid, struct mdt_body *mb,
1225 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1226 const struct lu_fid *fid);
1228 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1229 u64 want, bool conservative);
1230 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1232 #endif /* _MDT_INTERNAL_H */