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)
268 struct lu_object_header mot_header;
269 struct lu_object mot_obj;
270 unsigned int mot_lov_created:1, /* lov object created */
271 mot_cache_attr:1; /* enable remote object
274 spinlock_t mot_write_lock;
275 /* Lock to protect create_data */
276 struct mutex mot_lov_mutex;
277 /* lock to protect read/write stages for Data-on-MDT files */
278 struct rw_semaphore mot_dom_sem;
279 /* Lock to protect lease open.
280 * Lease open acquires write lock; normal open acquires read lock */
281 struct rw_semaphore mot_open_sem;
282 atomic_t mot_lease_count;
283 atomic_t mot_open_count;
286 struct mdt_lock_handle {
287 /* Lock type, reg for cross-ref use or pdo lock. */
291 struct lustre_handle mlh_reg_lh;
292 enum ldlm_mode mlh_reg_mode;
295 struct lustre_handle mlh_pdo_lh;
296 enum ldlm_mode mlh_pdo_mode;
297 unsigned int mlh_pdo_hash;
299 /* Remote regular lock */
300 struct lustre_handle mlh_rreg_lh;
301 enum ldlm_mode mlh_rreg_mode;
305 MDT_LH_PARENT, /* parent lockh */
306 MDT_LH_CHILD, /* child lockh */
307 MDT_LH_OLD, /* old lockh for rename */
308 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
309 MDT_LH_NEW, /* new lockh for rename */
310 MDT_LH_RMT, /* used for return lh to caller */
311 MDT_LH_LOCAL, /* local lock never return to client */
320 /* Special magical errno for communicaiton between mdt_reint_open()
321 * and mdt_intent_reint() which means return the lock to the client
322 * for subsequent cross ref open. Previously we used plain -EREMOTE
323 * but other functions called in that path might return it too and
324 * confuse us. This is not returned to the client. See LU-5370. */
325 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
327 struct mdt_reint_record {
328 enum mds_reint_op rr_opcode;
329 const struct lustre_handle *rr_handle;
330 const struct lu_fid *rr_fid1;
331 const struct lu_fid *rr_fid2;
332 struct lu_name rr_name;
333 struct lu_name rr_tgt_name;
339 enum mdt_reint_flag {
340 MRF_OPEN_TRUNC = 1 << 0,
344 * Common data shared by mdt-level handlers. This is allocated per-thread to
345 * reduce stack consumption.
347 struct mdt_thread_info {
350 * The following members will be filled explicitly
351 * with specific data in mdt_thread_info_init().
353 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
354 * request handling may migrate from one server thread to another.
356 struct req_capsule *mti_pill;
358 /* although we have export in req, there are cases when it is not
359 * available, e.g. closing files upon export destroy */
360 struct obd_export *mti_exp;
362 * A couple of lock handles.
364 struct mdt_lock_handle mti_lh[MDT_LH_NR];
366 struct mdt_device *mti_mdt;
367 const struct lu_env *mti_env;
369 /* transaction number of current request */
375 * The following members will be filled expilictly
376 * with zero in mdt_thread_info_init(). These members may be used
383 struct md_attr mti_attr;
385 * Body for "habeo corpus" operations.
387 const struct mdt_body *mti_body;
389 * Host object. This is released at the end of mdt_handler().
391 struct mdt_object *mti_object;
393 * Lock request for "habeo clavis" operations.
395 const struct ldlm_request *mti_dlm_req;
397 __u32 mti_has_trans:1, /* has txn already? */
399 /* big_lmm buffer was used and must be used in reply */
403 /* opdata for mdt_reint_open(), has the same as
404 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
405 * value onto disk for recovery when mdt_trans_stop_cb() is called.
411 * The following members will be filled explicitly
412 * with zero in mdt_reint_unpack(), because they are only used
413 * by reint requests (including mdt_reint_open()).
417 * reint record. contains information for reint operations.
419 struct mdt_reint_record mti_rr;
421 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
423 * Operation specification (currently create and lookup)
425 struct md_op_spec mti_spec;
429 * The following members will _NOT_ be initialized at all.
430 * DO NOT expect them to contain any valid value.
431 * They should be initialized explicitly by the user themselves.
434 /* XXX: If something is in a union, make sure they do not conflict */
435 struct lu_fid mti_tmp_fid1;
436 struct lu_fid mti_tmp_fid2;
437 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
438 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
440 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
441 char ns_name[48];/* for mdt_init0() */
442 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
443 struct obd_statfs osfs; /* for mdt_statfs() */
445 /* for mdt_readpage() */
446 struct lu_rdpg mti_rdpg;
447 /* for mdt_sendpage() */
448 struct l_wait_info mti_wait_info;
455 struct lustre_handle mti_close_handle;
457 struct lu_buf mti_buf;
458 struct lu_buf mti_big_buf;
460 /* Ops object filename */
461 struct lu_name mti_name;
462 /* per-thread values, can be re-used, may be vmalloc'd */
467 /* should be enough to fit lustre_mdt_attrs */
468 char mti_xattr_buf[128];
469 struct ldlm_enqueue_info mti_einfo;
470 struct tg_reply_data *mti_reply_data;
473 extern struct lu_context_key mdt_thread_key;
475 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
477 struct mdt_thread_info *mti;
479 lu_env_refill((void *)env);
480 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
485 struct cdt_req_progress {
486 struct mutex crp_lock; /**< protect tree */
487 struct interval_node *crp_root; /**< tree to track extent
489 struct interval_node **crp_node; /**< buffer for tree nodes
490 * vector of fixed size
492 int crp_cnt; /**< # of used nodes */
493 int crp_max; /**< # of allocated nodes */
496 struct cdt_agent_req {
497 struct hlist_node car_cookie_hash; /**< find req by cookie */
498 struct list_head car_request_list; /**< to chain all the req. */
499 atomic_t car_refcount; /**< reference counter */
500 __u64 car_compound_id; /**< compound id */
501 __u64 car_flags; /**< request original flags */
502 struct obd_uuid car_uuid; /**< agent doing the req. */
503 __u32 car_archive_id; /**< archive id */
504 int car_canceled; /**< request was canceled */
505 time64_t car_req_start; /**< start time */
506 time64_t car_req_update; /**< last update time */
507 struct hsm_action_item *car_hai; /**< req. to the agent */
508 struct cdt_req_progress car_progress; /**< track data mvt
511 extern struct kmem_cache *mdt_hsm_car_kmem;
514 struct list_head ha_list; /**< to chain the agents */
515 struct obd_uuid ha_uuid; /**< agent uuid */
516 __u32 *ha_archive_id; /**< archive id */
517 int ha_archive_cnt; /**< number of archive entries
518 * 0 means any archive */
519 atomic_t ha_requests; /**< current request count */
520 atomic_t ha_success; /**< number of successful
522 atomic_t ha_failure; /**< number of failed actions */
525 struct cdt_restore_handle {
526 struct list_head crh_list; /**< to chain the handle */
527 struct lu_fid crh_fid; /**< fid of the object */
528 struct ldlm_extent crh_extent; /**< extent of the restore */
529 struct mdt_lock_handle crh_lh; /**< lock handle */
531 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
533 struct hsm_record_update {
535 enum agent_req_status status;
538 static inline const struct md_device_operations *
539 mdt_child_ops(struct mdt_device * m)
541 LASSERT(m->mdt_child);
542 return m->mdt_child->md_ops;
545 static inline struct md_object *mdt_object_child(struct mdt_object *o)
548 return lu2md(lu_object_next(&o->mot_obj));
551 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
553 return info->mti_pill ? info->mti_pill->rc_req : NULL;
556 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
558 LASSERT(info->mti_exp);
559 return exp_connect_flags(info->mti_exp);
562 static inline void mdt_object_get(const struct lu_env *env,
563 struct mdt_object *o)
566 lu_object_get(&o->mot_obj);
570 static inline void mdt_object_put(const struct lu_env *env,
571 struct mdt_object *o)
574 lu_object_put(env, &o->mot_obj);
578 static inline int mdt_object_exists(const struct mdt_object *o)
580 return lu_object_exists(&o->mot_obj);
583 static inline int mdt_object_remote(const struct mdt_object *o)
585 return lu_object_remote(&o->mot_obj);
588 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
590 return lu_object_fid(&o->mot_obj);
593 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
595 return mdt->mdt_lu_dev.ld_site;
598 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
600 return &mdt->mdt_seq_site;
603 static inline void mdt_export_evict(struct obd_export *exp)
605 class_fail_export(exp);
608 /* Here we use LVB_TYPE to check dne client, because it is
609 * also landed on 2.4. */
610 static inline bool mdt_is_dne_client(struct obd_export *exp)
612 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
615 static inline bool mdt_is_striped_client(struct obd_export *exp)
617 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
626 /* XXX Look into layout in MDT layer. This must be done in LOD. */
627 static inline int mdt_lmm_dom_entry(struct lov_mds_md *lmm)
629 struct lov_comp_md_v1 *comp_v1;
630 struct lov_mds_md *v1;
633 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
634 comp_v1 = (struct lov_comp_md_v1 *)lmm;
635 v1 = (struct lov_mds_md *)((char *)comp_v1 +
636 comp_v1->lcm_entries[0].lcme_offset);
637 /* DoM entry is the first entry always */
638 if (lov_pattern(v1->lmm_pattern) != LOV_PATTERN_MDT)
641 for (i = 1; i < comp_v1->lcm_entry_count; i++) {
644 v1 = (struct lov_mds_md *)((char *)comp_v1 +
645 comp_v1->lcm_entries[i].lcme_offset);
646 for (j = 0; j < v1->lmm_stripe_count; j++) {
647 /* if there is any object on OST */
648 if (v1->lmm_objects[j].l_ost_idx !=
658 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
659 void mdt_set_disposition(struct mdt_thread_info *info,
660 struct ldlm_reply *rep, __u64 op_flag);
661 void mdt_clear_disposition(struct mdt_thread_info *info,
662 struct ldlm_reply *rep, __u64 op_flag);
664 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
665 const struct lu_name *lname);
667 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
669 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
670 struct mdt_lock_handle *lh);
672 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
673 struct mdt_lock_handle *lhc);
675 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
676 struct mdt_lock_handle *lh, __u64 ibits);
678 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
679 struct mdt_lock_handle *lh, __u64 ibits,
682 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
683 struct mdt_lock_handle *lh, __u64 *ibits,
684 __u64 trybits, bool cos_incompat);
686 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
687 struct mdt_lock_handle *lh, int decref);
688 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
689 enum ldlm_mode mode, int decref);
691 struct mdt_object *mdt_object_new(const struct lu_env *env,
693 const struct lu_fid *);
694 struct mdt_object *mdt_object_find(const struct lu_env *,
696 const struct lu_fid *);
697 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
698 const struct lu_fid *,
699 struct mdt_lock_handle *,
701 void mdt_object_unlock_put(struct mdt_thread_info *,
703 struct mdt_lock_handle *,
706 void mdt_client_compatibility(struct mdt_thread_info *info);
708 int mdt_remote_object_lock(struct mdt_thread_info *mti,
709 struct mdt_object *o, const struct lu_fid *fid,
710 struct lustre_handle *lh,
711 enum ldlm_mode mode, __u64 ibits, bool cache);
713 enum mdt_name_flags {
717 int mdt_name_unpack(struct req_capsule *pill,
718 const struct req_msg_field *field,
720 enum mdt_name_flags flags);
721 int mdt_close_unpack(struct mdt_thread_info *info);
722 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
723 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
724 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
725 #ifdef CONFIG_FS_POSIX_ACL
726 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
727 struct mdt_object *o, struct lu_nodemap *nodemap);
729 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
730 const struct lu_attr *attr, const struct lu_fid *fid);
731 int mdt_pack_size2body(struct mdt_thread_info *info,
732 const struct lu_fid *fid, bool dom_lock);
733 int mdt_getxattr(struct mdt_thread_info *info);
734 int mdt_reint_setxattr(struct mdt_thread_info *info,
735 struct mdt_lock_handle *lh);
737 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
738 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
740 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
741 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
742 struct mdt_lock_handle *lhc);
744 extern void target_recovery_fini(struct obd_device *obd);
745 extern void target_recovery_init(struct lu_target *lut,
746 svc_handler_t handler);
747 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
748 struct obd_device *, struct lustre_sb_info *lsi);
749 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
751 int mdt_export_stats_init(struct obd_device *obd,
752 struct obd_export *exp,
755 int mdt_lock_new_child(struct mdt_thread_info *info,
756 struct mdt_object *o,
757 struct mdt_lock_handle *child_lockh);
759 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
762 int mdt_reint_open(struct mdt_thread_info *info,
763 struct mdt_lock_handle *lhc);
765 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
766 const struct lustre_handle *handle,
769 int mdt_get_info(struct tgt_session_info *tsi);
770 int mdt_attr_get_complex(struct mdt_thread_info *info,
771 struct mdt_object *o, struct md_attr *ma);
772 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
774 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
775 struct md_attr *ma, const char *name);
776 int mdt_write_get(struct mdt_object *o);
777 void mdt_write_put(struct mdt_object *o);
778 int mdt_write_read(struct mdt_object *o);
779 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
780 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
781 void mdt_mfd_free(struct mdt_file_data *mfd);
782 int mdt_close(struct tgt_session_info *tsi);
783 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
785 int mdt_fix_reply(struct mdt_thread_info *info);
786 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
788 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
790 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
791 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
792 const void *area, ssize_t len);
794 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
795 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
797 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
798 int mdt_check_ucred(struct mdt_thread_info *);
799 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
800 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
801 int mdt_init_ucred_reint(struct mdt_thread_info *);
802 void mdt_exit_ucred(struct mdt_thread_info *);
803 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
804 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
805 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
807 void mdt_thread_info_init(struct ptlrpc_request *req,
808 struct mdt_thread_info *mti);
809 void mdt_thread_info_fini(struct mdt_thread_info *mti);
810 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
811 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
812 struct ldlm_lock *new_lock,
813 struct mdt_lock_handle *lh, __u64 flags);
814 int mdt_intent_lock_replace(struct mdt_thread_info *info,
815 struct ldlm_lock **lockp,
816 struct mdt_lock_handle *lh,
817 __u64 flags, int result);
819 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
820 const struct md_hsm *mh);
822 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
823 void *data, int flag);
824 int mdt_links_read(struct mdt_thread_info *info,
825 struct mdt_object *mdt_obj,
826 struct linkea_data *ldata);
827 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
828 struct mdt_body *repbody);
830 static inline struct mdt_device *mdt_dev(struct lu_device *d)
832 return container_of0(d, struct mdt_device, mdt_lu_dev);
835 static inline struct mdt_object *mdt_obj(struct lu_object *o)
837 return container_of0(o, struct mdt_object, mot_obj);
840 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
842 struct lu_object *lo;
843 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
845 lo = lu_object_locate(mo->mot_obj.lo_header,
846 mdt->mdt_bottom->dd_lu_dev.ld_type);
851 static inline bool agent_req_in_final_state(enum agent_req_status ars)
853 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
854 (ars == ARS_CANCELED));
857 /* mdt/mdt_identity.c */
858 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
860 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
862 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
864 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
866 void mdt_flush_identity(struct upcall_cache *, int);
868 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
870 /* mdt/mdt_recovery.c */
871 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
874 int mdt_hsm_state_get(struct tgt_session_info *tsi);
875 int mdt_hsm_state_set(struct tgt_session_info *tsi);
876 int mdt_hsm_action(struct tgt_session_info *tsi);
877 int mdt_hsm_progress(struct tgt_session_info *tsi);
878 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
879 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
880 int mdt_hsm_request(struct tgt_session_info *tsi);
882 /* mdt/mdt_hsm_cdt_actions.c */
883 extern const struct file_operations mdt_hsm_actions_fops;
884 void dump_llog_agent_req_rec(const char *prefix,
885 const struct llog_agent_req_rec *larr);
886 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
887 llog_cb_t cb, void *data, u32 start_cat_idx,
888 u32 start_rec_idx, int rw);
889 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
890 __u64 compound_id, __u32 archive_id,
891 __u64 flags, struct hsm_action_item *hai);
892 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
893 struct hsm_record_update *updates,
894 unsigned int updates_count);
895 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
897 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
898 u32 *cat_idt, u32 *rec_idx);
899 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
901 /* mdt/mdt_hsm_cdt_agent.c */
902 extern const struct file_operations mdt_hsm_agent_fops;
903 int mdt_hsm_agent_register(struct mdt_thread_info *info,
904 const struct obd_uuid *uuid,
905 int nr_archives, __u32 *archive_num);
906 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
907 const struct obd_uuid *uuid,
909 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
910 const struct obd_uuid *uuid);
911 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
912 int succ_rq, int fail_rq, int new_rq,
913 const struct obd_uuid *uuid);
914 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
915 struct obd_uuid *uuid);
916 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
918 int mdt_hsm_coordinator_update(struct mdt_thread_info *mti,
919 struct hsm_progress_kernel *pgs);
920 /* mdt/mdt_hsm_cdt_client.c */
921 int mdt_hsm_add_actions(struct mdt_thread_info *info,
922 struct hsm_action_list *hal);
923 int mdt_hsm_get_actions(struct mdt_thread_info *mti,
924 struct hsm_action_list *hal);
925 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
926 const struct lu_fid *fid);
927 /* mdt/mdt_hsm_cdt_requests.c */
928 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
929 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
930 extern const struct file_operations mdt_hsm_active_requests_fops;
931 void dump_requests(char *prefix, struct coordinator *cdt);
932 struct cdt_agent_req *mdt_cdt_alloc_request(__u64 compound_id, __u32 archive_id,
933 __u64 flags, struct obd_uuid *uuid,
934 struct hsm_action_item *hai);
935 void mdt_cdt_free_request(struct cdt_agent_req *car);
936 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
937 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
938 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
939 void mdt_cdt_get_request(struct cdt_agent_req *car);
940 void mdt_cdt_put_request(struct cdt_agent_req *car);
941 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
942 const struct hsm_progress_kernel *pgs);
943 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
944 /* mdt/mdt_coordinator.c */
945 void mdt_hsm_dump_hal(int level, const char *prefix,
946 struct hsm_action_list *hal);
947 struct cdt_restore_handle *mdt_hsm_restore_hdl_find(struct coordinator *cdt,
948 const struct lu_fid *fid);
949 /* coordinator management */
950 int mdt_hsm_cdt_init(struct mdt_device *mdt);
951 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
952 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
955 * Signal the coordinator has work to do
956 * \param cdt [IN] coordinator
958 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
960 cdt->cdt_event = true;
963 /* coordinator control /proc interface */
964 ssize_t mdt_hsm_cdt_control_seq_write(struct file *file,
965 const char __user *buffer,
966 size_t count, loff_t *off);
967 int mdt_hsm_cdt_control_seq_show(struct seq_file *m, void *data);
968 int hsm_cdt_procfs_init(struct mdt_device *mdt);
969 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
970 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
972 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
973 const struct lu_fid *fid,
975 /* actions/request helpers */
976 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
977 struct hsm_action_list *hal, struct obd_uuid *uuid);
978 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
979 u32 archive_id, u64 rq_flags,
980 const struct md_hsm *hsm);
981 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
982 struct hsm_progress_kernel *pgs,
983 const int update_record);
985 int mdt_close_swap_layouts(struct mdt_thread_info *info,
986 struct mdt_object *o, struct md_attr *ma);
988 extern struct lu_context_key mdt_thread_key;
990 /* debug issues helper starts here*/
991 static inline int mdt_fail_write(const struct lu_env *env,
992 struct dt_device *dd, int id)
994 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
995 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
997 return dt_ro(env, dd);
998 /* We set FAIL_ONCE because we never "un-fail" a device */
1004 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1006 return &req->rq_export->exp_mdt_data;
1009 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1011 return mdt_dev(exp->exp_obd->obd_lu_dev);
1014 static inline bool mdt_rdonly(struct obd_export *exp)
1016 if (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1017 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly)
1022 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1023 struct mdt_lock_handle *lhc);
1024 static inline int mdt_check_resent(struct mdt_thread_info *info,
1025 mdt_reconstruct_t reconstruct,
1026 struct mdt_lock_handle *lhc)
1028 struct ptlrpc_request *req = mdt_info_req(info);
1032 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1033 OBD_ALLOC_PTR(info->mti_reply_data);
1034 if (info->mti_reply_data == NULL)
1037 if (req_can_reconstruct(req, info->mti_reply_data)) {
1038 reconstruct(info, lhc);
1041 DEBUG_REQ(D_HA, req,
1042 "no reply data found for RESENT req");
1045 OBD_FREE_PTR(info->mti_reply_data);
1046 info->mti_reply_data = NULL;
1051 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1052 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1054 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1056 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1059 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1061 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1063 return -ELDLM_NO_LOCK_DATA;
1066 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1067 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
1068 struct lustre_handle *lh, enum ldlm_mode mode,
1069 union ldlm_policy_data *policy,
1070 const struct ldlm_res_id *res_id,
1071 __u64 flags, const __u64 *client_cookie)
1074 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1076 LASSERT(ns != NULL);
1077 LASSERT(lh != NULL);
1079 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
1080 mode, &flags, mdt_blocking_ast,
1081 ldlm_completion_ast,
1082 glimpse ? mdt_dom_glimpse_ast : NULL,
1083 NULL, 0, LVB_T_NONE, client_cookie, lh);
1084 return rc == ELDLM_OK ? 0 : -EIO;
1087 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1089 ldlm_lock_decref(lh, mode);
1092 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1094 return mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL;
1097 extern mdl_mode_t mdt_mdl_lock_modes[];
1098 extern enum ldlm_mode mdt_dlm_lock_modes[];
1100 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1102 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1104 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1105 return mdt_mdl_lock_modes[mode];
1108 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1110 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1111 return mdt_dlm_lock_modes[mode];
1115 extern struct ldlm_valblock_ops mdt_lvbo;
1116 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1117 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1118 struct ptlrpc_request *req, bool increase_only);
1120 void mdt_enable_cos(struct mdt_device *, int);
1121 int mdt_cos_is_enabled(struct mdt_device *);
1139 LPROC_MDT_SAMEDIR_RENAME,
1140 LPROC_MDT_CROSSDIR_RENAME,
1146 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1147 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1148 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1149 void mdt_procfs_fini(struct mdt_device *mdt);
1151 /* lustre/mdt_mdt_lproc.c */
1152 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1154 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1155 struct mdt_device *mdt,
1156 struct ptlrpc_request *req,
1157 struct mdt_object *src, struct mdt_object *tgt);
1159 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1161 return mdt->mdt_lu_dev.ld_obd;
1164 extern const struct lu_device_operations mdt_lu_ops;
1166 static inline char *mdt_obd_name(struct mdt_device *mdt)
1168 return mdt->mdt_lu_dev.ld_obd->obd_name;
1171 int mds_mod_init(void);
1172 void mds_mod_exit(void);
1174 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1176 struct obd_export *exp = req->rq_export;
1179 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1180 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1187 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1188 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1190 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1191 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1192 struct niobuf_remote *rnb, int *nr_local,
1193 struct niobuf_local *lnb);
1195 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1196 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1197 struct niobuf_remote *rnb, int npages,
1198 struct niobuf_local *lnb, int old_rc);
1199 int mdt_punch_hdl(struct tgt_session_info *tsi);
1200 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1201 struct ldlm_lock **lockp, __u64 flags);
1202 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1203 struct ldlm_lock **lockp, __u64 flags);
1204 void mdt_dom_discard_data(struct mdt_thread_info *info,
1205 const struct lu_fid *fid);
1206 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1207 struct ldlm_resource *res, bool increase_only);
1208 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1209 bool increase_only);
1210 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1212 static inline void mdt_dom_check_and_discard(struct mdt_thread_info *mti,
1213 struct mdt_object *mo)
1215 if (lu_object_is_dying(&mo->mot_header) &&
1216 S_ISREG(lu_object_attr(&mo->mot_obj)))
1217 mdt_dom_discard_data(mti, mdt_object_fid(mo));
1220 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1221 const struct lu_fid *fid, struct mdt_body *mb,
1223 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1224 const struct lu_fid *fid);
1226 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1227 u64 want, bool conservative);
1228 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1230 #endif /* _MDT_INTERNAL_H */