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, 2013, 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
51 #if defined(__KERNEL__)
53 #include <libcfs/lucache.h>
54 #include <lustre_net.h>
55 #include <lustre/lustre_idl.h>
56 #include <obd_class.h>
57 #include <lustre_disk.h>
58 #include <lu_target.h>
59 #include <md_object.h>
60 #include <lustre_fid.h>
61 #include <lustre_fld.h>
62 #include <lustre_req_layout.h>
63 #include <lustre_sec.h>
64 #include <lustre_idmap.h>
65 #include <lustre_eacl.h>
66 #include <lustre_quota.h>
67 #include <lustre_linkea.h>
69 /* check if request's xid is equal to last one or not*/
70 static inline int req_xid_is_last(struct ptlrpc_request *req)
72 struct lsd_client_data *lcd = req->rq_export->exp_target_data.ted_lcd;
73 return (req->rq_xid == lcd->lcd_last_xid ||
74 req->rq_xid == lcd->lcd_last_close_xid);
79 /* file data for open files on MDS */
80 struct mdt_file_data {
81 struct portals_handle mfd_handle; /* must be first */
82 __u64 mfd_mode; /* open mode provided by client */
83 cfs_list_t mfd_list; /* protected by med_open_lock */
84 __u64 mfd_xid; /* xid of the open request */
85 struct lustre_handle mfd_old_handle; /* old handle in replay case */
86 struct mdt_object *mfd_object; /* point to opened object */
89 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
90 #define CDT_NORETRY_ACTION (1ULL << 1)
91 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
92 #define CDT_POLICY_SHIFT_COUNT 2
93 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
96 /* when adding a new policy, do not forget to update
97 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
99 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
101 enum cdt_states { CDT_STOPPED = 0,
107 /* when multiple lock are needed, the lock order is
115 struct ptlrpc_thread cdt_thread; /**< coordinator thread */
116 struct lu_env cdt_env; /**< coordinator lustre
118 struct lu_context cdt_session; /** session for lu_ucred */
119 struct proc_dir_entry *cdt_proc_dir; /**< cdt /proc directory */
120 __u64 cdt_policy; /**< policy flags */
121 enum cdt_states cdt_state; /**< state */
122 atomic_t cdt_compound_id; /**< compound id
124 __u64 cdt_last_cookie; /**< last cookie
126 struct mutex cdt_llog_lock; /**< protect llog
128 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
129 struct rw_semaphore cdt_request_lock; /**< protect request
131 struct mutex cdt_restore_lock; /**< protect restore
133 cfs_time_t cdt_loop_period; /**< llog scan period */
134 cfs_time_t cdt_grace_delay; /**< request grace
136 cfs_time_t cdt_active_req_timeout; /**< request timeout */
137 __u32 cdt_default_archive_id; /**< archive id used
140 __u64 cdt_max_requests; /**< max count of started
142 atomic_t cdt_request_count; /**< current count of
143 * started requests */
144 struct list_head cdt_requests; /**< list of started
146 struct list_head cdt_agents; /**< list of register
148 struct list_head cdt_restore_hdl; /**< list of restore lock
150 /* Bitmasks indexed by the HSMA_XXX constants. */
151 __u64 cdt_user_request_mask;
152 __u64 cdt_group_request_mask;
153 __u64 cdt_other_request_mask;
156 /* mdt state flag bits */
157 #define MDT_FL_CFGLOG 0
158 #define MDT_FL_SYNCED 1
162 struct lu_device mdt_lu_dev;
163 struct seq_server_site mdt_seq_site;
164 /* DLM name-space for meta-data locks maintained by this server */
165 struct ldlm_namespace *mdt_namespace;
166 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
167 struct ptlrpc_client *mdt_ldlm_client;
168 /* underlying device */
169 struct obd_export *mdt_child_exp;
170 struct md_device *mdt_child;
171 struct dt_device *mdt_bottom;
172 struct obd_export *mdt_bottom_exp;
174 struct lu_target mdt_lut;
176 * Options bit-fields.
179 unsigned int mo_user_xattr:1,
184 /* mdt state flags */
185 unsigned long mdt_state;
186 /* lock to protect IOepoch */
187 spinlock_t mdt_ioepoch_lock;
190 /* transaction callbacks */
191 struct dt_txn_callback mdt_txn_cb;
193 /* these values should be updated from lov if necessary.
194 * or should be placed somewhere else. */
199 struct upcall_cache *mdt_identity_cache;
201 /* capability keys */
202 unsigned long mdt_capa_timeout;
204 struct dt_object *mdt_ck_obj;
205 unsigned long mdt_ck_timeout;
206 unsigned long mdt_ck_expiry;
207 struct timer_list mdt_ck_timer;
208 struct ptlrpc_thread mdt_ck_thread;
209 struct lustre_capa_key mdt_capa_keys[2];
210 unsigned int mdt_capa_conf:1,
212 /* Enable remote dir on non-MDT0 */
213 mdt_enable_remote_dir:1;
215 gid_t mdt_enable_remote_dir_gid;
216 /* statfs optimization: we cache a bit */
217 struct obd_statfs mdt_osfs;
219 spinlock_t mdt_osfs_lock;
222 uid_t mdt_squash_uid;
223 gid_t mdt_squash_gid;
224 cfs_list_t mdt_nosquash_nids;
225 char *mdt_nosquash_str;
226 int mdt_nosquash_strlen;
227 struct rw_semaphore mdt_squash_sem;
229 struct rename_stats mdt_rename_stats;
230 struct lu_fid mdt_md_root_fid;
232 /* connection to quota master */
233 struct obd_export *mdt_qmt_exp;
234 /* quota master device associated with this MDT */
235 struct lu_device *mdt_qmt_dev;
237 struct coordinator mdt_coordinator;
240 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
241 #define MDT_COS_DEFAULT (0)
244 struct lu_object_header mot_header;
245 struct lu_object mot_obj;
248 int mot_ioepoch_count;
250 /* Lock to protect object's IO epoch. */
251 struct mutex mot_ioepoch_mutex;
252 /* Lock to protect create_data */
253 struct mutex mot_lov_mutex;
254 /* Lock to protect lease open.
255 * Lease open acquires write lock; normal open acquires read lock */
256 struct rw_semaphore mot_open_sem;
257 atomic_t mot_lease_count;
258 atomic_t mot_open_count;
261 enum mdt_object_flags {
262 /** SOM attributes are changed. */
263 MOF_SOM_CHANGE = (1 << 0),
265 * The SOM recovery state for mdt object.
266 * This state is an in-memory equivalent of an absent SOM EA, used
267 * instead of invalidating SOM EA while IOEpoch is still opened when
268 * a client eviction occurs or a client fails to obtain SOM attributes.
269 * It indicates that the last IOEpoch holder will need to obtain SOM
270 * attributes under [0;EOF] extent lock to flush all the client's
271 * cached of evicted from MDS clients (but not necessary evicted from
272 * OST) before taking ost attributes.
274 MOF_SOM_RECOV = (1 << 1),
275 /** File has been just created. */
276 MOF_SOM_CREATED = (1 << 2),
277 /** lov object has been created. */
278 MOF_LOV_CREATED = (1 << 3),
281 struct mdt_lock_handle {
282 /* Lock type, reg for cross-ref use or pdo lock. */
286 struct lustre_handle mlh_reg_lh;
287 ldlm_mode_t mlh_reg_mode;
290 struct lustre_handle mlh_pdo_lh;
291 ldlm_mode_t mlh_pdo_mode;
292 unsigned int mlh_pdo_hash;
294 /* Remote regular lock */
295 struct lustre_handle mlh_rreg_lh;
296 ldlm_mode_t mlh_rreg_mode;
300 MDT_LH_PARENT, /* parent lockh */
301 MDT_LH_CHILD, /* child lockh */
302 MDT_LH_OLD, /* old lockh for rename */
303 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
304 MDT_LH_NEW, /* new lockh for rename */
305 MDT_LH_RMT, /* used for return lh to caller */
306 MDT_LH_LOCAL, /* local lock never return to client */
315 struct mdt_reint_record {
316 mdt_reint_t rr_opcode;
317 const struct lustre_handle *rr_handle;
318 const struct lu_fid *rr_fid1;
319 const struct lu_fid *rr_fid2;
320 struct lu_name rr_name;
321 struct lu_name rr_tgt_name;
322 const void *rr_eadata;
327 enum mdt_reint_flag {
328 MRF_OPEN_TRUNC = 1 << 0,
332 * Common data shared by mdt-level handlers. This is allocated per-thread to
333 * reduce stack consumption.
335 struct mdt_thread_info {
338 * The following members will be filled explicitly
339 * with specific data in mdt_thread_info_init().
341 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
342 * request handling may migrate from one server thread to another.
344 struct req_capsule *mti_pill;
346 /* although we have export in req, there are cases when it is not
347 * available, e.g. closing files upon export destroy */
348 struct obd_export *mti_exp;
350 * A couple of lock handles.
352 struct mdt_lock_handle mti_lh[MDT_LH_NR];
354 struct mdt_device *mti_mdt;
355 const struct lu_env *mti_env;
357 /* transaction number of current request */
363 * The following members will be filled expilictly
364 * with zero in mdt_thread_info_init(). These members may be used
371 struct md_attr mti_attr;
373 * Body for "habeo corpus" operations.
375 const struct mdt_body *mti_body;
377 * Host object. This is released at the end of mdt_handler().
379 struct mdt_object *mti_object;
381 * Lock request for "habeo clavis" operations.
383 const struct ldlm_request *mti_dlm_req;
385 __u32 mti_has_trans:1, /* has txn already? */
388 /* opdata for mdt_reint_open(), has the same as
389 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
390 * value onto disk for recovery when mdt_trans_stop_cb() is called.
396 * The following members will be filled explicitly
397 * with zero in mdt_reint_unpack(), because they are only used
398 * by reint requests (including mdt_reint_open()).
402 * reint record. contains information for reint operations.
404 struct mdt_reint_record mti_rr;
406 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
408 * Operation specification (currently create and lookup)
410 struct md_op_spec mti_spec;
414 * The following members will _NOT_ be initialized at all.
415 * DO NOT expect them to contain any valid value.
416 * They should be initialized explicitly by the user themselves.
419 /* XXX: If something is in a union, make sure they do not conflict */
421 struct lu_fid mti_tmp_fid1;
422 struct lu_fid mti_tmp_fid2;
423 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
424 * mdt_rename_lock() */
425 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
428 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
429 char ns_name[48]; /* for mdt_init0() */
430 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
431 struct obd_statfs osfs; /* for mdt_statfs() */
433 /* for mdt_readpage() */
434 struct lu_rdpg mti_rdpg;
435 /* for mdt_sendpage() */
436 struct l_wait_info mti_wait_info;
440 struct md_som_data data;
444 /* IO epoch related stuff. */
445 struct mdt_ioepoch *mti_ioepoch;
446 __u64 mti_replayepoch;
449 struct lu_buf mti_buf;
450 struct lu_buf mti_big_buf;
451 struct lustre_capa_key mti_capa_key;
453 /* Ops object filename */
454 struct lu_name mti_name;
455 /* per-thread values, can be re-used */
458 /* big_lmm buffer was used and must be used in reply */
459 int mti_big_lmm_used;
460 /* should be enough to fit lustre_mdt_attrs */
461 char mti_xattr_buf[128];
462 struct ldlm_enqueue_info mti_einfo;
465 extern struct lu_context_key mdt_thread_key;
467 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
469 struct mdt_thread_info *mti;
471 lu_env_refill((void *)env);
472 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
477 struct cdt_req_progress {
478 struct mutex crp_lock; /**< protect tree */
479 struct interval_node *crp_root; /**< tree to track extent
481 struct interval_node **crp_node; /**< buffer for tree nodes
482 * vector of fixed size
484 int crp_cnt; /**< # of used nodes */
485 int crp_max; /**< # of allocated nodes */
488 struct cdt_agent_req {
489 cfs_list_t car_request_list; /**< to chain all the req. */
490 atomic_t car_refcount; /**< reference counter */
491 __u64 car_compound_id; /**< compound id */
492 __u64 car_flags; /**< request original flags */
493 struct obd_uuid car_uuid; /**< agent doing the req. */
494 __u32 car_archive_id; /**< archive id */
495 int car_canceled; /**< request was canceled */
496 cfs_time_t car_req_start; /**< start time */
497 cfs_time_t car_req_update; /**< last update time */
498 struct hsm_action_item *car_hai; /**< req. to the agent */
499 struct cdt_req_progress car_progress; /**< track data mvt
502 extern struct kmem_cache *mdt_hsm_car_kmem;
505 cfs_list_t ha_list; /**< to chain the agents */
506 struct obd_uuid ha_uuid; /**< agent uuid */
507 __u32 *ha_archive_id; /**< archive id */
508 int ha_archive_cnt; /**< number of archive entries
509 * 0 means any archive */
510 atomic_t ha_requests; /**< current request count */
511 atomic_t ha_success; /**< number of successful
513 atomic_t ha_failure; /**< number of failed actions */
516 struct cdt_restore_handle {
517 cfs_list_t crh_list; /**< to chain the handle */
518 struct lu_fid crh_fid; /**< fid of the object */
519 struct ldlm_extent crh_extent; /**< extent of the restore */
520 struct mdt_lock_handle crh_lh; /**< lock handle */
522 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
524 static inline const struct md_device_operations *
525 mdt_child_ops(struct mdt_device * m)
527 LASSERT(m->mdt_child);
528 return m->mdt_child->md_ops;
531 static inline struct md_object *mdt_object_child(struct mdt_object *o)
534 return lu2md(lu_object_next(&o->mot_obj));
537 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
539 return info->mti_pill ? info->mti_pill->rc_req : NULL;
542 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
544 LASSERT(info->mti_exp);
545 return exp_connect_flags(info->mti_exp);
548 static inline void mdt_object_get(const struct lu_env *env,
549 struct mdt_object *o)
552 lu_object_get(&o->mot_obj);
556 static inline void mdt_object_put(const struct lu_env *env,
557 struct mdt_object *o)
560 lu_object_put(env, &o->mot_obj);
564 static inline int mdt_object_exists(const struct mdt_object *o)
566 return lu_object_exists(&o->mot_obj);
569 static inline int mdt_object_remote(const struct mdt_object *o)
571 return lu_object_remote(&o->mot_obj);
574 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
576 return lu_object_fid(&o->mot_obj);
579 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
581 return mdt->mdt_lu_dev.ld_site;
584 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
586 return &mdt->mdt_seq_site;
589 static inline void mdt_export_evict(struct obd_export *exp)
591 class_fail_export(exp);
592 class_export_put(exp);
595 /* Here we use LVB_TYPE to check dne client, because it is
596 * also landed on 2.4. */
597 static inline int mdt_is_dne_client(struct obd_export *exp)
599 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
602 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
603 void mdt_set_disposition(struct mdt_thread_info *info,
604 struct ldlm_reply *rep, int flag);
605 void mdt_clear_disposition(struct mdt_thread_info *info,
606 struct ldlm_reply *rep, int flag);
608 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
609 ldlm_mode_t lock_mode,
610 const struct lu_name *lname);
612 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
615 int mdt_lock_setup(struct mdt_thread_info *info,
616 struct mdt_object *o,
617 struct mdt_lock_handle *lh);
619 int mdt_object_lock(struct mdt_thread_info *,
621 struct mdt_lock_handle *,
624 int mdt_object_lock_try(struct mdt_thread_info *,
626 struct mdt_lock_handle *,
629 void mdt_object_unlock(struct mdt_thread_info *,
631 struct mdt_lock_handle *,
634 struct mdt_object *mdt_object_new(const struct lu_env *,
636 const struct lu_fid *);
637 struct mdt_object *mdt_object_find(const struct lu_env *,
639 const struct lu_fid *);
640 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
641 const struct lu_fid *,
642 struct mdt_lock_handle *,
644 void mdt_object_unlock_put(struct mdt_thread_info *,
646 struct mdt_lock_handle *,
649 void mdt_client_compatibility(struct mdt_thread_info *info);
651 int mdt_remote_object_lock(struct mdt_thread_info *mti,
652 struct mdt_object *o, const struct lu_fid *fid,
653 struct lustre_handle *lh,
654 ldlm_mode_t mode, __u64 ibits);
656 enum mdt_name_flags {
660 int mdt_name_unpack(struct req_capsule *pill,
661 const struct req_msg_field *field,
663 enum mdt_name_flags flags);
664 int mdt_close_unpack(struct mdt_thread_info *info);
665 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
666 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
667 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
668 const struct lu_attr *attr, const struct lu_fid *fid);
670 int mdt_getxattr(struct mdt_thread_info *info);
671 int mdt_reint_setxattr(struct mdt_thread_info *info,
672 struct mdt_lock_handle *lh);
674 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
675 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
677 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
678 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
679 struct mdt_lock_handle *lhc);
681 extern void target_recovery_fini(struct obd_device *obd);
682 extern void target_recovery_init(struct lu_target *lut,
683 svc_handler_t handler);
684 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
685 struct obd_device *, struct lustre_sb_info *lsi);
686 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
688 int mdt_export_stats_init(struct obd_device *obd,
689 struct obd_export *exp,
692 int mdt_lock_new_child(struct mdt_thread_info *info,
693 struct mdt_object *o,
694 struct mdt_lock_handle *child_lockh);
696 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
699 int mdt_reint_open(struct mdt_thread_info *info,
700 struct mdt_lock_handle *lhc);
702 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
703 const struct lustre_handle *handle,
707 MDT_IOEPOCH_CLOSED = 0,
708 MDT_IOEPOCH_OPENED = 1,
709 MDT_IOEPOCH_GETATTR = 2,
717 int mdt_get_info(struct tgt_session_info *tsi);
718 int mdt_attr_get_complex(struct mdt_thread_info *info,
719 struct mdt_object *o, struct md_attr *ma);
720 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
722 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
723 struct md_attr *ma, const char *name);
724 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
726 int mdt_object_is_som_enabled(struct mdt_object *mo);
727 int mdt_write_get(struct mdt_object *o);
728 void mdt_write_put(struct mdt_object *o);
729 int mdt_write_read(struct mdt_object *o);
730 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
731 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
732 void mdt_mfd_free(struct mdt_file_data *mfd);
733 int mdt_close(struct tgt_session_info *tsi);
734 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
735 struct md_attr *ma, int flags);
736 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
738 int mdt_done_writing(struct tgt_session_info *tsi);
739 int mdt_fix_reply(struct mdt_thread_info *info);
740 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
741 const struct md_attr *);
742 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
744 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
745 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
746 const void *area, ssize_t len);
748 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
749 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
751 int mdt_check_ucred(struct mdt_thread_info *);
752 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
753 int mdt_init_ucred_reint(struct mdt_thread_info *);
754 void mdt_exit_ucred(struct mdt_thread_info *);
755 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
756 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
757 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
759 void mdt_thread_info_init(struct ptlrpc_request *req,
760 struct mdt_thread_info *mti);
761 void mdt_thread_info_fini(struct mdt_thread_info *mti);
762 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
764 extern struct lprocfs_vars lprocfs_mds_module_vars[];
765 extern struct lprocfs_vars lprocfs_mds_obd_vars[];
767 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
768 const struct md_hsm *mh);
770 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
771 void *data, int flag);
772 int mdt_links_read(struct mdt_thread_info *info,
773 struct mdt_object *mdt_obj,
774 struct linkea_data *ldata);
776 int mdt_init_idmap(struct tgt_session_info *tsi);
777 void mdt_cleanup_idmap(struct mdt_export_data *);
778 int mdt_handle_idmap(struct tgt_session_info *tsi);
779 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
780 struct ptlrpc_user_desc *);
781 void mdt_body_reverse_idmap(struct mdt_thread_info *,
783 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
784 struct mdt_remote_perm *);
785 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
787 static inline struct mdt_device *mdt_dev(struct lu_device *d)
789 return container_of0(d, struct mdt_device, mdt_lu_dev);
792 static inline struct mdt_object *mdt_obj(struct lu_object *o)
794 return container_of0(o, struct mdt_object, mot_obj);
797 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
799 struct lu_object *lo;
800 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
802 lo = lu_object_locate(mo->mot_obj.lo_header,
803 mdt->mdt_bottom->dd_lu_dev.ld_type);
808 /* mdt/mdt_identity.c */
809 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
811 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
813 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
815 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
817 void mdt_flush_identity(struct upcall_cache *, int);
819 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
821 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
824 int mdt_hsm_state_get(struct tgt_session_info *tsi);
825 int mdt_hsm_state_set(struct tgt_session_info *tsi);
826 int mdt_hsm_action(struct tgt_session_info *tsi);
827 int mdt_hsm_progress(struct tgt_session_info *tsi);
828 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
829 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
830 int mdt_hsm_request(struct tgt_session_info *tsi);
832 /* mdt/mdt_hsm_cdt_actions.c */
833 extern const struct file_operations mdt_hsm_actions_fops;
834 void dump_llog_agent_req_rec(const char *prefix,
835 const struct llog_agent_req_rec *larr);
836 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
837 llog_cb_t cb, void *data);
838 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
839 __u64 compound_id, __u32 archive_id,
840 __u64 flags, struct hsm_action_item *hai);
841 int mdt_agent_record_update(const struct lu_env *env,
842 struct mdt_device *mdt, __u64 *cookies,
843 int cookies_count, enum agent_req_status status);
844 int mdt_agent_llog_update_rec(const struct lu_env *env, struct mdt_device *mdt,
845 struct llog_handle *llh,
846 struct llog_agent_req_rec *larr);
848 /* mdt/mdt_hsm_cdt_agent.c */
849 extern const struct file_operations mdt_hsm_agent_fops;
850 int mdt_hsm_agent_register(struct mdt_thread_info *info,
851 const struct obd_uuid *uuid,
852 int nr_archives, __u32 *archive_num);
853 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
854 const struct obd_uuid *uuid,
856 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
857 const struct obd_uuid *uuid);
858 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
859 int succ_rq, int fail_rq, int new_rq,
860 const struct obd_uuid *uuid);
861 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
862 struct obd_uuid *uuid);
863 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
865 int mdt_hsm_coordinator_update(struct mdt_thread_info *mti,
866 struct hsm_progress_kernel *pgs);
867 /* mdt/mdt_hsm_cdt_client.c */
868 int mdt_hsm_add_actions(struct mdt_thread_info *info,
869 struct hsm_action_list *hal, __u64 *compound_id);
870 int mdt_hsm_get_actions(struct mdt_thread_info *mti,
871 struct hsm_action_list *hal);
872 int mdt_hsm_get_running(struct mdt_thread_info *mti,
873 struct hsm_action_list *hal);
874 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
875 const struct lu_fid *fid);
876 /* mdt/mdt_hsm_cdt_requests.c */
877 extern const struct file_operations mdt_hsm_active_requests_fops;
878 void dump_requests(char *prefix, struct coordinator *cdt);
879 struct cdt_agent_req *mdt_cdt_alloc_request(__u64 compound_id, __u32 archive_id,
880 __u64 flags, struct obd_uuid *uuid,
881 struct hsm_action_item *hai);
882 void mdt_cdt_free_request(struct cdt_agent_req *car);
883 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
884 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt,
886 const struct lu_fid *fid);
887 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
888 void mdt_cdt_get_request(struct cdt_agent_req *car);
889 void mdt_cdt_put_request(struct cdt_agent_req *car);
890 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
891 const struct hsm_progress_kernel *pgs);
892 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
893 /* mdt/mdt_coordinator.c */
894 void mdt_hsm_dump_hal(int level, const char *prefix,
895 struct hsm_action_list *hal);
896 /* coordinator management */
897 int mdt_hsm_cdt_init(struct mdt_device *mdt);
898 int mdt_hsm_cdt_start(struct mdt_device *mdt);
899 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
900 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
901 int mdt_hsm_cdt_wakeup(struct mdt_device *mdt);
903 /* coordinator control /proc interface */
904 int lprocfs_wr_hsm_cdt_control(struct file *file, const char *buffer,
905 unsigned long count, void *data);
906 int lprocfs_rd_hsm_cdt_control(char *page, char **start, off_t off,
907 int count, int *eof, void *data);
908 int hsm_cdt_procfs_init(struct mdt_device *mdt);
909 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
910 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
912 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
913 const struct lu_fid *fid,
915 /* actions/request helpers */
916 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
917 struct hsm_action_list *hal, struct obd_uuid *uuid);
918 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
919 const int hal_an, const __u64 rq_flags,
920 const struct md_hsm *hsm);
921 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
922 struct hsm_progress_kernel *pgs,
923 const int update_record);
925 extern struct lu_context_key mdt_thread_key;
927 /* debug issues helper starts here*/
928 static inline int mdt_fail_write(const struct lu_env *env,
929 struct dt_device *dd, int id)
931 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
932 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
934 return dd->dd_ops->dt_ro(env, dd);
935 /* We set FAIL_ONCE because we never "un-fail" a device */
941 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
943 return &req->rq_export->exp_mdt_data;
946 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
948 return mdt_dev(exp->exp_obd->obd_lu_dev);
951 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
952 struct mdt_lock_handle *lhc);
953 static inline int mdt_check_resent(struct mdt_thread_info *info,
954 mdt_reconstruct_t reconstruct,
955 struct mdt_lock_handle *lhc)
957 struct ptlrpc_request *req = mdt_info_req(info);
960 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
961 if (req_xid_is_last(req)) {
962 reconstruct(info, lhc);
965 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
966 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
971 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
972 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
974 static inline int is_identity_get_disabled(struct upcall_cache *cache)
976 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
979 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
981 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
982 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
983 struct lustre_handle *lh,
985 ldlm_policy_data_t *policy,
986 const struct ldlm_res_id *res_id,
987 __u64 flags, const __u64 *client_cookie)
994 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
995 mode, &flags, mdt_blocking_ast,
996 ldlm_completion_ast, NULL, NULL, 0,
997 LVB_T_NONE, client_cookie, lh);
998 return rc == ELDLM_OK ? 0 : -EIO;
1001 static inline void mdt_fid_unlock(struct lustre_handle *lh,
1004 ldlm_lock_decref(lh, mode);
1007 extern mdl_mode_t mdt_mdl_lock_modes[];
1008 extern ldlm_mode_t mdt_dlm_lock_modes[];
1010 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
1012 LASSERT(IS_PO2(mode));
1013 return mdt_mdl_lock_modes[mode];
1016 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1018 LASSERT(IS_PO2(mode));
1019 return mdt_dlm_lock_modes[mode];
1023 extern struct ldlm_valblock_ops mdt_lvbo;
1025 void mdt_enable_cos(struct mdt_device *, int);
1026 int mdt_cos_is_enabled(struct mdt_device *);
1044 LPROC_MDT_SAMEDIR_RENAME,
1045 LPROC_MDT_CROSSDIR_RENAME,
1048 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1049 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1050 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
1051 void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars);
1052 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1053 void mdt_procfs_fini(struct mdt_device *mdt);
1055 /* lustre/mdt_mdt_lproc.c */
1056 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1058 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1059 struct mdt_device *mdt,
1060 struct ptlrpc_request *req,
1061 struct mdt_object *src, struct mdt_object *tgt);
1064 int mdt_ck_thread_start(struct mdt_device *mdt);
1065 void mdt_ck_thread_stop(struct mdt_device *mdt);
1066 void mdt_ck_timer_callback(unsigned long castmeharder);
1067 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
1068 void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
1069 const struct lu_fid *fid, struct lustre_capa *capa);
1070 void mdt_dump_capainfo(struct mdt_thread_info *info);
1072 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1074 return mdt->mdt_lu_dev.ld_obd;
1077 extern const struct lu_device_operations mdt_lu_ops;
1079 static inline char *mdt_obd_name(struct mdt_device *mdt)
1081 return mdt->mdt_lu_dev.ld_obd->obd_name;
1084 int mds_mod_init(void);
1085 void mds_mod_exit(void);
1087 #endif /* __KERNEL__ */