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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_internal.h
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Andreas Dilger <adilger@clusterfs.com>
42 * Author: Phil Schwan <phil@clusterfs.com>
43 * Author: Mike Shaver <shaver@clusterfs.com>
44 * Author: Nikita Danilov <nikita@clusterfs.com>
45 * Author: Huang Hua <huanghua@clusterfs.com>
48 #ifndef _MDT_INTERNAL_H
49 #define _MDT_INTERNAL_H
52 #include <upcall_cache.h>
53 #include <lustre_net.h>
54 #include <lustre/lustre_idl.h>
55 #include <obd_class.h>
56 #include <lustre_disk.h>
57 #include <lu_target.h>
58 #include <md_object.h>
59 #include <lustre_fid.h>
60 #include <lustre_fld.h>
61 #include <lustre_req_layout.h>
62 #include <lustre_sec.h>
63 #include <lustre_idmap.h>
64 #include <lustre_eacl.h>
65 #include <lustre_quota.h>
66 #include <lustre_linkea.h>
70 /* file data for open files on MDS */
71 struct mdt_file_data {
72 /** portals handle must be first */
73 struct portals_handle mfd_handle;
74 /** open mode provided by client */
76 /** protected by med_open_lock */
77 struct list_head mfd_list;
78 /** xid of the open request */
80 /** old handle in replay case */
81 struct lustre_handle mfd_old_handle;
82 /** point to opened object */
83 struct mdt_object *mfd_object;
86 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
87 #define CDT_NORETRY_ACTION (1ULL << 1)
88 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
89 #define CDT_POLICY_SHIFT_COUNT 2
90 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
93 /* when adding a new policy, do not forget to update
94 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
96 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
98 enum cdt_states { CDT_STOPPED = 0,
104 /* when multiple lock are needed, the lock order is
112 struct ptlrpc_thread cdt_thread; /**< coordinator thread */
113 struct lu_env cdt_env; /**< coordinator lustre
115 struct lu_context cdt_session; /** session for lu_ucred */
116 struct proc_dir_entry *cdt_proc_dir; /**< cdt /proc directory */
117 __u64 cdt_policy; /**< policy flags */
118 enum cdt_states cdt_state; /**< state */
119 atomic_t cdt_compound_id; /**< compound id
121 __u64 cdt_last_cookie; /**< last cookie
123 struct mutex cdt_llog_lock; /**< protect llog
125 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
126 struct rw_semaphore cdt_request_lock; /**< protect request
128 struct mutex cdt_restore_lock; /**< protect restore
130 cfs_time_t cdt_loop_period; /**< llog scan period */
131 cfs_time_t cdt_grace_delay; /**< request grace
133 cfs_time_t cdt_active_req_timeout; /**< request timeout */
134 __u32 cdt_default_archive_id; /**< archive id used
137 __u64 cdt_max_requests; /**< max count of started
139 atomic_t cdt_request_count; /**< current count of
140 * started requests */
141 struct list_head cdt_requests; /**< list of started
143 struct list_head cdt_agents; /**< list of register
145 struct list_head cdt_restore_hdl; /**< list of restore lock
147 /* Bitmasks indexed by the HSMA_XXX constants. */
148 __u64 cdt_user_request_mask;
149 __u64 cdt_group_request_mask;
150 __u64 cdt_other_request_mask;
153 /* mdt state flag bits */
154 #define MDT_FL_CFGLOG 0
155 #define MDT_FL_SYNCED 1
159 struct lu_device mdt_lu_dev;
160 struct seq_server_site mdt_seq_site;
161 /* DLM name-space for meta-data locks maintained by this server */
162 struct ldlm_namespace *mdt_namespace;
163 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
164 struct ptlrpc_client *mdt_ldlm_client;
165 /* underlying device */
166 struct obd_export *mdt_child_exp;
167 struct md_device *mdt_child;
168 struct dt_device *mdt_bottom;
169 struct obd_export *mdt_bottom_exp;
171 struct lu_target mdt_lut;
173 * Options bit-fields.
176 unsigned int mo_user_xattr:1,
182 /* mdt state flags */
183 unsigned long mdt_state;
185 /* transaction callbacks */
186 struct dt_txn_callback mdt_txn_cb;
188 /* these values should be updated from lov if necessary.
189 * or should be placed somewhere else. */
194 struct upcall_cache *mdt_identity_cache;
196 unsigned int mdt_capa_conf:1,
197 /* Enable remote dir on non-MDT0 */
198 mdt_enable_remote_dir:1,
201 gid_t mdt_enable_remote_dir_gid;
203 /* lock for osfs and md_root */
206 /* statfs optimization: we cache a bit */
207 struct obd_statfs mdt_osfs;
211 struct root_squash_info mdt_squash;
213 struct rename_stats mdt_rename_stats;
214 struct lu_fid mdt_md_root_fid;
216 /* connection to quota master */
217 struct obd_export *mdt_qmt_exp;
218 /* quota master device associated with this MDT */
219 struct lu_device *mdt_qmt_dev;
221 struct coordinator mdt_coordinator;
223 /* inter-MDT connection count */
224 atomic_t mdt_mds_mds_conns;
226 /* MDT device async commit count, used for debug and sanity test */
227 atomic_t mdt_async_commit_count;
229 struct mdt_object *mdt_md_root;
232 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
233 #define MDT_COS_DEFAULT (0)
236 struct lu_object_header mot_header;
237 struct lu_object mot_obj;
238 unsigned int mot_lov_created:1, /* lov object created */
239 mot_cache_attr:1; /* enable remote object
242 spinlock_t mot_write_lock;
243 /* Lock to protect create_data */
244 struct mutex mot_lov_mutex;
245 /* Lock to protect lease open.
246 * Lease open acquires write lock; normal open acquires read lock */
247 struct rw_semaphore mot_open_sem;
248 atomic_t mot_lease_count;
249 atomic_t mot_open_count;
252 struct mdt_lock_handle {
253 /* Lock type, reg for cross-ref use or pdo lock. */
257 struct lustre_handle mlh_reg_lh;
258 enum ldlm_mode mlh_reg_mode;
261 struct lustre_handle mlh_pdo_lh;
262 enum ldlm_mode mlh_pdo_mode;
263 unsigned int mlh_pdo_hash;
265 /* Remote regular lock */
266 struct lustre_handle mlh_rreg_lh;
267 enum ldlm_mode mlh_rreg_mode;
271 MDT_LH_PARENT, /* parent lockh */
272 MDT_LH_CHILD, /* child lockh */
273 MDT_LH_OLD, /* old lockh for rename */
274 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
275 MDT_LH_NEW, /* new lockh for rename */
276 MDT_LH_RMT, /* used for return lh to caller */
277 MDT_LH_LOCAL, /* local lock never return to client */
286 /* Special magical errno for communicaiton between mdt_reint_open()
287 * and mdt_intent_reint() which means return the lock to the client
288 * for subsequent cross ref open. Previously we used plain -EREMOTE
289 * but other functions called in that path might return it too and
290 * confuse us. This is not returned to the client. See LU-5370. */
291 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
293 struct mdt_reint_record {
294 mdt_reint_t rr_opcode;
295 const struct lustre_handle *rr_handle;
296 const struct lu_fid *rr_fid1;
297 const struct lu_fid *rr_fid2;
298 struct lu_name rr_name;
299 struct lu_name rr_tgt_name;
305 enum mdt_reint_flag {
306 MRF_OPEN_TRUNC = 1 << 0,
310 * Common data shared by mdt-level handlers. This is allocated per-thread to
311 * reduce stack consumption.
313 struct mdt_thread_info {
316 * The following members will be filled explicitly
317 * with specific data in mdt_thread_info_init().
319 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
320 * request handling may migrate from one server thread to another.
322 struct req_capsule *mti_pill;
324 /* although we have export in req, there are cases when it is not
325 * available, e.g. closing files upon export destroy */
326 struct obd_export *mti_exp;
328 * A couple of lock handles.
330 struct mdt_lock_handle mti_lh[MDT_LH_NR];
332 struct mdt_device *mti_mdt;
333 const struct lu_env *mti_env;
335 /* transaction number of current request */
341 * The following members will be filled expilictly
342 * with zero in mdt_thread_info_init(). These members may be used
349 struct md_attr mti_attr;
351 * Body for "habeo corpus" operations.
353 const struct mdt_body *mti_body;
355 * Host object. This is released at the end of mdt_handler().
357 struct mdt_object *mti_object;
359 * Lock request for "habeo clavis" operations.
361 const struct ldlm_request *mti_dlm_req;
363 __u32 mti_has_trans:1, /* has txn already? */
366 /* opdata for mdt_reint_open(), has the same as
367 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
368 * value onto disk for recovery when mdt_trans_stop_cb() is called.
374 * The following members will be filled explicitly
375 * with zero in mdt_reint_unpack(), because they are only used
376 * by reint requests (including mdt_reint_open()).
380 * reint record. contains information for reint operations.
382 struct mdt_reint_record mti_rr;
384 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
386 * Operation specification (currently create and lookup)
388 struct md_op_spec mti_spec;
392 * The following members will _NOT_ be initialized at all.
393 * DO NOT expect them to contain any valid value.
394 * They should be initialized explicitly by the user themselves.
397 /* XXX: If something is in a union, make sure they do not conflict */
398 struct lu_fid mti_tmp_fid1;
399 struct lu_fid mti_tmp_fid2;
400 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
401 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
403 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
404 char ns_name[48];/* for mdt_init0() */
405 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
406 struct obd_statfs osfs; /* for mdt_statfs() */
408 /* for mdt_readpage() */
409 struct lu_rdpg mti_rdpg;
410 /* for mdt_sendpage() */
411 struct l_wait_info mti_wait_info;
418 struct lustre_handle mti_close_handle;
420 struct lu_buf mti_buf;
421 struct lu_buf mti_big_buf;
423 /* Ops object filename */
424 struct lu_name mti_name;
425 /* per-thread values, can be re-used, may be vmalloc'd */
428 /* big_lmm buffer was used and must be used in reply */
429 int mti_big_lmm_used;
430 /* should be enough to fit lustre_mdt_attrs */
431 char mti_xattr_buf[128];
432 struct ldlm_enqueue_info mti_einfo;
433 struct tg_reply_data *mti_reply_data;
436 extern struct lu_context_key mdt_thread_key;
438 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
440 struct mdt_thread_info *mti;
442 lu_env_refill((void *)env);
443 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
448 struct cdt_req_progress {
449 struct mutex crp_lock; /**< protect tree */
450 struct interval_node *crp_root; /**< tree to track extent
452 struct interval_node **crp_node; /**< buffer for tree nodes
453 * vector of fixed size
455 int crp_cnt; /**< # of used nodes */
456 int crp_max; /**< # of allocated nodes */
459 struct cdt_agent_req {
460 struct list_head car_request_list; /**< to chain all the req. */
461 atomic_t car_refcount; /**< reference counter */
462 __u64 car_compound_id; /**< compound id */
463 __u64 car_flags; /**< request original flags */
464 struct obd_uuid car_uuid; /**< agent doing the req. */
465 __u32 car_archive_id; /**< archive id */
466 int car_canceled; /**< request was canceled */
467 cfs_time_t car_req_start; /**< start time */
468 cfs_time_t car_req_update; /**< last update time */
469 struct hsm_action_item *car_hai; /**< req. to the agent */
470 struct cdt_req_progress car_progress; /**< track data mvt
473 extern struct kmem_cache *mdt_hsm_car_kmem;
476 struct list_head ha_list; /**< to chain the agents */
477 struct obd_uuid ha_uuid; /**< agent uuid */
478 __u32 *ha_archive_id; /**< archive id */
479 int ha_archive_cnt; /**< number of archive entries
480 * 0 means any archive */
481 atomic_t ha_requests; /**< current request count */
482 atomic_t ha_success; /**< number of successful
484 atomic_t ha_failure; /**< number of failed actions */
487 struct cdt_restore_handle {
488 struct list_head crh_list; /**< to chain the handle */
489 struct lu_fid crh_fid; /**< fid of the object */
490 struct ldlm_extent crh_extent; /**< extent of the restore */
491 struct mdt_lock_handle crh_lh; /**< lock handle */
493 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
495 static inline const struct md_device_operations *
496 mdt_child_ops(struct mdt_device * m)
498 LASSERT(m->mdt_child);
499 return m->mdt_child->md_ops;
502 static inline struct md_object *mdt_object_child(struct mdt_object *o)
505 return lu2md(lu_object_next(&o->mot_obj));
508 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
510 return info->mti_pill ? info->mti_pill->rc_req : NULL;
513 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
515 LASSERT(info->mti_exp);
516 return exp_connect_flags(info->mti_exp);
519 static inline void mdt_object_get(const struct lu_env *env,
520 struct mdt_object *o)
523 lu_object_get(&o->mot_obj);
527 static inline void mdt_object_put(const struct lu_env *env,
528 struct mdt_object *o)
531 lu_object_put(env, &o->mot_obj);
535 static inline int mdt_object_exists(const struct mdt_object *o)
537 return lu_object_exists(&o->mot_obj);
540 static inline int mdt_object_remote(const struct mdt_object *o)
542 return lu_object_remote(&o->mot_obj);
545 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
547 return lu_object_fid(&o->mot_obj);
550 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
552 return mdt->mdt_lu_dev.ld_site;
555 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
557 return &mdt->mdt_seq_site;
560 static inline void mdt_export_evict(struct obd_export *exp)
562 class_fail_export(exp);
565 /* Here we use LVB_TYPE to check dne client, because it is
566 * also landed on 2.4. */
567 static inline bool mdt_is_dne_client(struct obd_export *exp)
569 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
572 static inline bool mdt_is_striped_client(struct obd_export *exp)
574 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
577 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
578 void mdt_set_disposition(struct mdt_thread_info *info,
579 struct ldlm_reply *rep, __u64 op_flag);
580 void mdt_clear_disposition(struct mdt_thread_info *info,
581 struct ldlm_reply *rep, __u64 op_flag);
583 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
584 const struct lu_name *lname);
586 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
588 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
589 struct mdt_lock_handle *lh);
591 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
592 struct mdt_lock_handle *lhc);
594 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
595 struct mdt_lock_handle *lh, __u64 ibits);
597 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
598 struct mdt_lock_handle *lh, __u64 ibits,
601 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
602 struct mdt_lock_handle *lh, __u64 ibits);
604 int mdt_reint_object_lock_try(struct mdt_thread_info *info,
605 struct mdt_object *o, struct mdt_lock_handle *lh,
606 __u64 ibits, bool cos_incompat);
608 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
609 struct mdt_lock_handle *lh, int decref);
611 struct mdt_object *mdt_object_new(const struct lu_env *env,
613 const struct lu_fid *);
614 struct mdt_object *mdt_object_find(const struct lu_env *,
616 const struct lu_fid *);
617 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
618 const struct lu_fid *,
619 struct mdt_lock_handle *,
621 void mdt_object_unlock_put(struct mdt_thread_info *,
623 struct mdt_lock_handle *,
626 void mdt_client_compatibility(struct mdt_thread_info *info);
628 int mdt_remote_object_lock(struct mdt_thread_info *mti,
629 struct mdt_object *o, const struct lu_fid *fid,
630 struct lustre_handle *lh,
631 enum ldlm_mode mode, __u64 ibits, bool nonblock,
634 enum mdt_name_flags {
638 int mdt_name_unpack(struct req_capsule *pill,
639 const struct req_msg_field *field,
641 enum mdt_name_flags flags);
642 int mdt_close_unpack(struct mdt_thread_info *info);
643 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
644 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
645 #ifdef CONFIG_FS_POSIX_ACL
646 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
647 struct mdt_object *o, struct lu_nodemap *nodemap);
649 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
650 const struct lu_attr *attr, const struct lu_fid *fid);
652 int mdt_getxattr(struct mdt_thread_info *info);
653 int mdt_reint_setxattr(struct mdt_thread_info *info,
654 struct mdt_lock_handle *lh);
656 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
657 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
659 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
660 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
661 struct mdt_lock_handle *lhc);
663 extern void target_recovery_fini(struct obd_device *obd);
664 extern void target_recovery_init(struct lu_target *lut,
665 svc_handler_t handler);
666 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
667 struct obd_device *, struct lustre_sb_info *lsi);
668 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
670 int mdt_export_stats_init(struct obd_device *obd,
671 struct obd_export *exp,
674 int mdt_lock_new_child(struct mdt_thread_info *info,
675 struct mdt_object *o,
676 struct mdt_lock_handle *child_lockh);
678 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
681 int mdt_reint_open(struct mdt_thread_info *info,
682 struct mdt_lock_handle *lhc);
684 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
685 const struct lustre_handle *handle,
688 int mdt_get_info(struct tgt_session_info *tsi);
689 int mdt_attr_get_complex(struct mdt_thread_info *info,
690 struct mdt_object *o, struct md_attr *ma);
691 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
693 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
694 struct md_attr *ma, const char *name);
695 int mdt_write_get(struct mdt_object *o);
696 void mdt_write_put(struct mdt_object *o);
697 int mdt_write_read(struct mdt_object *o);
698 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
699 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
700 void mdt_mfd_free(struct mdt_file_data *mfd);
701 int mdt_close(struct tgt_session_info *tsi);
702 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
704 int mdt_fix_reply(struct mdt_thread_info *info);
705 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
706 const struct md_attr *);
707 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
709 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
710 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
711 const void *area, ssize_t len);
713 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
714 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
716 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
717 int mdt_check_ucred(struct mdt_thread_info *);
718 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
719 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
720 int mdt_init_ucred_reint(struct mdt_thread_info *);
721 void mdt_exit_ucred(struct mdt_thread_info *);
722 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
723 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
724 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
726 void mdt_thread_info_init(struct ptlrpc_request *req,
727 struct mdt_thread_info *mti);
728 void mdt_thread_info_fini(struct mdt_thread_info *mti);
729 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
731 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
732 const struct md_hsm *mh);
734 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
735 void *data, int flag);
736 int mdt_links_read(struct mdt_thread_info *info,
737 struct mdt_object *mdt_obj,
738 struct linkea_data *ldata);
739 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
740 struct mdt_body *repbody);
742 static inline struct mdt_device *mdt_dev(struct lu_device *d)
744 return container_of0(d, struct mdt_device, mdt_lu_dev);
747 static inline struct mdt_object *mdt_obj(struct lu_object *o)
749 return container_of0(o, struct mdt_object, mot_obj);
752 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
754 struct lu_object *lo;
755 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
757 lo = lu_object_locate(mo->mot_obj.lo_header,
758 mdt->mdt_bottom->dd_lu_dev.ld_type);
763 /* mdt/mdt_identity.c */
764 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
766 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
768 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
770 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
772 void mdt_flush_identity(struct upcall_cache *, int);
774 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
776 /* mdt/mdt_recovery.c */
777 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
780 int mdt_hsm_state_get(struct tgt_session_info *tsi);
781 int mdt_hsm_state_set(struct tgt_session_info *tsi);
782 int mdt_hsm_action(struct tgt_session_info *tsi);
783 int mdt_hsm_progress(struct tgt_session_info *tsi);
784 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
785 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
786 int mdt_hsm_request(struct tgt_session_info *tsi);
788 /* mdt/mdt_hsm_cdt_actions.c */
789 extern const struct file_operations mdt_hsm_actions_fops;
790 void dump_llog_agent_req_rec(const char *prefix,
791 const struct llog_agent_req_rec *larr);
792 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
793 llog_cb_t cb, void *data);
794 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
795 __u64 compound_id, __u32 archive_id,
796 __u64 flags, struct hsm_action_item *hai);
797 int mdt_agent_record_update(const struct lu_env *env,
798 struct mdt_device *mdt, __u64 *cookies,
799 int cookies_count, enum agent_req_status status);
801 /* mdt/mdt_hsm_cdt_agent.c */
802 extern const struct file_operations mdt_hsm_agent_fops;
803 int mdt_hsm_agent_register(struct mdt_thread_info *info,
804 const struct obd_uuid *uuid,
805 int nr_archives, __u32 *archive_num);
806 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
807 const struct obd_uuid *uuid,
809 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
810 const struct obd_uuid *uuid);
811 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
812 int succ_rq, int fail_rq, int new_rq,
813 const struct obd_uuid *uuid);
814 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
815 struct obd_uuid *uuid);
816 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
818 int mdt_hsm_coordinator_update(struct mdt_thread_info *mti,
819 struct hsm_progress_kernel *pgs);
820 /* mdt/mdt_hsm_cdt_client.c */
821 int mdt_hsm_add_actions(struct mdt_thread_info *info,
822 struct hsm_action_list *hal);
823 int mdt_hsm_get_actions(struct mdt_thread_info *mti,
824 struct hsm_action_list *hal);
825 int mdt_hsm_get_running(struct mdt_thread_info *mti,
826 struct hsm_action_list *hal);
827 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
828 const struct lu_fid *fid);
829 /* mdt/mdt_hsm_cdt_requests.c */
830 extern const struct file_operations mdt_hsm_active_requests_fops;
831 void dump_requests(char *prefix, struct coordinator *cdt);
832 struct cdt_agent_req *mdt_cdt_alloc_request(__u64 compound_id, __u32 archive_id,
833 __u64 flags, struct obd_uuid *uuid,
834 struct hsm_action_item *hai);
835 void mdt_cdt_free_request(struct cdt_agent_req *car);
836 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
837 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt,
839 const struct lu_fid *fid);
840 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
841 void mdt_cdt_get_request(struct cdt_agent_req *car);
842 void mdt_cdt_put_request(struct cdt_agent_req *car);
843 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
844 const struct hsm_progress_kernel *pgs);
845 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
846 /* mdt/mdt_coordinator.c */
847 void mdt_hsm_dump_hal(int level, const char *prefix,
848 struct hsm_action_list *hal);
849 struct cdt_restore_handle *mdt_hsm_restore_hdl_find(struct coordinator *cdt,
850 const struct lu_fid *fid);
851 /* coordinator management */
852 int mdt_hsm_cdt_init(struct mdt_device *mdt);
853 int mdt_hsm_cdt_start(struct mdt_device *mdt);
854 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
855 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
856 int mdt_hsm_cdt_wakeup(struct mdt_device *mdt);
858 /* coordinator control /proc interface */
859 ssize_t mdt_hsm_cdt_control_seq_write(struct file *file,
860 const char __user *buffer,
861 size_t count, loff_t *off);
862 int mdt_hsm_cdt_control_seq_show(struct seq_file *m, void *data);
863 int hsm_cdt_procfs_init(struct mdt_device *mdt);
864 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
865 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
867 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
868 const struct lu_fid *fid,
870 /* actions/request helpers */
871 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
872 struct hsm_action_list *hal, struct obd_uuid *uuid);
873 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
874 const int hal_an, const __u64 rq_flags,
875 const struct md_hsm *hsm);
876 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
877 struct hsm_progress_kernel *pgs,
878 const int update_record);
880 int mdt_close_swap_layouts(struct mdt_thread_info *info,
881 struct mdt_object *o, struct md_attr *ma);
883 extern struct lu_context_key mdt_thread_key;
885 /* debug issues helper starts here*/
886 static inline int mdt_fail_write(const struct lu_env *env,
887 struct dt_device *dd, int id)
889 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
890 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
892 return dt_ro(env, dd);
893 /* We set FAIL_ONCE because we never "un-fail" a device */
899 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
901 return &req->rq_export->exp_mdt_data;
904 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
906 return mdt_dev(exp->exp_obd->obd_lu_dev);
909 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
910 struct mdt_lock_handle *lhc);
911 static inline int mdt_check_resent(struct mdt_thread_info *info,
912 mdt_reconstruct_t reconstruct,
913 struct mdt_lock_handle *lhc)
915 struct ptlrpc_request *req = mdt_info_req(info);
919 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
920 OBD_ALLOC_PTR(info->mti_reply_data);
921 if (info->mti_reply_data == NULL)
924 if (req_can_reconstruct(req, info->mti_reply_data)) {
925 reconstruct(info, lhc);
929 "no reply data found for RESENT req");
932 OBD_FREE_PTR(info->mti_reply_data);
933 info->mti_reply_data = NULL;
938 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
939 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
941 static inline int is_identity_get_disabled(struct upcall_cache *cache)
943 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
946 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
948 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
949 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
950 struct lustre_handle *lh, enum ldlm_mode mode,
951 union ldlm_policy_data *policy,
952 const struct ldlm_res_id *res_id,
953 __u64 flags, const __u64 *client_cookie)
960 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
961 mode, &flags, mdt_blocking_ast,
962 ldlm_completion_ast, NULL, NULL, 0,
963 LVB_T_NONE, client_cookie, lh);
964 return rc == ELDLM_OK ? 0 : -EIO;
967 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
969 ldlm_lock_decref(lh, mode);
972 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
974 return mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL;
977 extern mdl_mode_t mdt_mdl_lock_modes[];
978 extern enum ldlm_mode mdt_dlm_lock_modes[];
980 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
982 LASSERT(IS_PO2(mode));
983 return mdt_mdl_lock_modes[mode];
986 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
988 LASSERT(IS_PO2(mode));
989 return mdt_dlm_lock_modes[mode];
993 extern struct ldlm_valblock_ops mdt_lvbo;
995 void mdt_enable_cos(struct mdt_device *, int);
996 int mdt_cos_is_enabled(struct mdt_device *);
1014 LPROC_MDT_SAMEDIR_RENAME,
1015 LPROC_MDT_CROSSDIR_RENAME,
1018 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1019 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1020 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1021 void mdt_procfs_fini(struct mdt_device *mdt);
1023 /* lustre/mdt_mdt_lproc.c */
1024 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1026 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1027 struct mdt_device *mdt,
1028 struct ptlrpc_request *req,
1029 struct mdt_object *src, struct mdt_object *tgt);
1031 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1033 return mdt->mdt_lu_dev.ld_obd;
1036 extern const struct lu_device_operations mdt_lu_ops;
1038 static inline char *mdt_obd_name(struct mdt_device *mdt)
1040 return mdt->mdt_lu_dev.ld_obd->obd_name;
1043 int mds_mod_init(void);
1044 void mds_mod_exit(void);
1046 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1048 struct obd_export *exp = req->rq_export;
1051 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1052 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1057 #endif /* _MDT_INTERNAL_H */