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. */
196 int mdt_max_cookiesize;
200 struct upcall_cache *mdt_identity_cache;
202 /* capability keys */
203 unsigned long mdt_capa_timeout;
205 struct dt_object *mdt_ck_obj;
206 unsigned long mdt_ck_timeout;
207 unsigned long mdt_ck_expiry;
208 struct timer_list mdt_ck_timer;
209 struct ptlrpc_thread mdt_ck_thread;
210 struct lustre_capa_key mdt_capa_keys[2];
211 unsigned int mdt_capa_conf:1,
213 /* Enable remote dir on non-MDT0 */
214 mdt_enable_remote_dir:1;
216 gid_t mdt_enable_remote_dir_gid;
217 /* statfs optimization: we cache a bit */
218 struct obd_statfs mdt_osfs;
220 spinlock_t mdt_osfs_lock;
223 uid_t mdt_squash_uid;
224 gid_t mdt_squash_gid;
225 cfs_list_t mdt_nosquash_nids;
226 char *mdt_nosquash_str;
227 int mdt_nosquash_strlen;
228 struct rw_semaphore mdt_squash_sem;
230 struct rename_stats mdt_rename_stats;
231 struct lu_fid mdt_md_root_fid;
233 /* connection to quota master */
234 struct obd_export *mdt_qmt_exp;
235 /* quota master device associated with this MDT */
236 struct lu_device *mdt_qmt_dev;
238 struct coordinator mdt_coordinator;
241 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
242 #define MDT_COS_DEFAULT (0)
245 struct lu_object_header mot_header;
246 struct lu_object mot_obj;
249 int mot_ioepoch_count;
251 /* Lock to protect object's IO epoch. */
252 struct mutex mot_ioepoch_mutex;
253 /* Lock to protect create_data */
254 struct mutex mot_lov_mutex;
255 /* Lock to protect lease open.
256 * Lease open acquires write lock; normal open acquires read lock */
257 struct rw_semaphore mot_open_sem;
258 atomic_t mot_lease_count;
259 atomic_t mot_open_count;
262 enum mdt_object_flags {
263 /** SOM attributes are changed. */
264 MOF_SOM_CHANGE = (1 << 0),
266 * The SOM recovery state for mdt object.
267 * This state is an in-memory equivalent of an absent SOM EA, used
268 * instead of invalidating SOM EA while IOEpoch is still opened when
269 * a client eviction occurs or a client fails to obtain SOM attributes.
270 * It indicates that the last IOEpoch holder will need to obtain SOM
271 * attributes under [0;EOF] extent lock to flush all the client's
272 * cached of evicted from MDS clients (but not necessary evicted from
273 * OST) before taking ost attributes.
275 MOF_SOM_RECOV = (1 << 1),
276 /** File has been just created. */
277 MOF_SOM_CREATED = (1 << 2),
278 /** lov object has been created. */
279 MOF_LOV_CREATED = (1 << 3),
282 struct mdt_lock_handle {
283 /* Lock type, reg for cross-ref use or pdo lock. */
287 struct lustre_handle mlh_reg_lh;
288 ldlm_mode_t mlh_reg_mode;
291 struct lustre_handle mlh_pdo_lh;
292 ldlm_mode_t mlh_pdo_mode;
293 unsigned int mlh_pdo_hash;
295 /* Remote regular lock */
296 struct lustre_handle mlh_rreg_lh;
297 ldlm_mode_t mlh_rreg_mode;
301 MDT_LH_PARENT, /* parent lockh */
302 MDT_LH_CHILD, /* child lockh */
303 MDT_LH_OLD, /* old lockh for rename */
304 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
305 MDT_LH_NEW, /* new lockh for rename */
306 MDT_LH_RMT, /* used for return lh to caller */
307 MDT_LH_LOCAL, /* local lock never return to client */
316 struct mdt_reint_record {
317 mdt_reint_t rr_opcode;
318 const struct lustre_handle *rr_handle;
319 const struct lu_fid *rr_fid1;
320 const struct lu_fid *rr_fid2;
321 struct lu_name rr_name;
322 struct lu_name rr_tgt_name;
323 const void *rr_eadata;
328 enum mdt_reint_flag {
329 MRF_OPEN_TRUNC = 1 << 0,
333 * Common data shared by mdt-level handlers. This is allocated per-thread to
334 * reduce stack consumption.
336 struct mdt_thread_info {
339 * The following members will be filled explicitly
340 * with specific data in mdt_thread_info_init().
342 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
343 * request handling may migrate from one server thread to another.
345 struct req_capsule *mti_pill;
347 /* although we have export in req, there are cases when it is not
348 * available, e.g. closing files upon export destroy */
349 struct obd_export *mti_exp;
351 * A couple of lock handles.
353 struct mdt_lock_handle mti_lh[MDT_LH_NR];
355 struct mdt_device *mti_mdt;
356 const struct lu_env *mti_env;
358 /* transaction number of current request */
364 * The following members will be filled expilictly
365 * with zero in mdt_thread_info_init(). These members may be used
372 struct md_attr mti_attr;
374 * Body for "habeo corpus" operations.
376 const struct mdt_body *mti_body;
378 * Host object. This is released at the end of mdt_handler().
380 struct mdt_object *mti_object;
382 * Lock request for "habeo clavis" operations.
384 const struct ldlm_request *mti_dlm_req;
386 __u32 mti_has_trans:1, /* has txn already? */
389 /* opdata for mdt_reint_open(), has the same as
390 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
391 * value onto disk for recovery when mdt_trans_stop_cb() is called.
397 * The following members will be filled explicitly
398 * with zero in mdt_reint_unpack(), because they are only used
399 * by reint requests (including mdt_reint_open()).
403 * reint record. contains information for reint operations.
405 struct mdt_reint_record mti_rr;
407 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
409 * Operation specification (currently create and lookup)
411 struct md_op_spec mti_spec;
415 * The following members will _NOT_ be initialized at all.
416 * DO NOT expect them to contain any valid value.
417 * They should be initialized explicitly by the user themselves.
420 /* XXX: If something is in a union, make sure they do not conflict */
422 struct lu_fid mti_tmp_fid1;
423 struct lu_fid mti_tmp_fid2;
424 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
425 * mdt_rename_lock() */
426 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
429 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
430 char ns_name[48]; /* for mdt_init0() */
431 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
432 struct obd_statfs osfs; /* for mdt_statfs() */
434 /* for mdt_readpage() */
435 struct lu_rdpg mti_rdpg;
436 /* for mdt_sendpage() */
437 struct l_wait_info mti_wait_info;
441 struct md_som_data data;
445 /* IO epoch related stuff. */
446 struct mdt_ioepoch *mti_ioepoch;
447 __u64 mti_replayepoch;
450 struct lu_buf mti_buf;
451 struct lu_buf mti_big_buf;
452 struct lustre_capa_key mti_capa_key;
454 /* Ops object filename */
455 struct lu_name mti_name;
456 /* per-thread values, can be re-used */
459 /* big_lmm buffer was used and must be used in reply */
460 int mti_big_lmm_used;
461 /* should be enough to fit lustre_mdt_attrs */
462 char mti_xattr_buf[128];
463 struct ldlm_enqueue_info mti_einfo;
466 extern struct lu_context_key mdt_thread_key;
468 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
470 struct mdt_thread_info *mti;
472 lu_env_refill((void *)env);
473 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
478 /* ptlrpc request handler for MDT. All handlers are
479 * grouped into several slices - struct mdt_opc_slice,
480 * and stored in an array - mdt_handlers[].
483 /* The name of this handler. */
485 /* Fail id for this handler, checked at the beginning of this handler*/
487 /* Operation code for this handler */
489 /* flags are listed in enum mdt_handler_flags below. */
491 /* The actual handler function to execute. */
492 int (*mh_act)(struct mdt_thread_info *info);
493 /* Request format for this request. */
494 const struct req_format *mh_fmt;
497 struct mdt_opc_slice {
500 struct mdt_handler *mos_hs;
503 struct cdt_req_progress {
504 struct mutex crp_lock; /**< protect tree */
505 struct interval_node *crp_root; /**< tree to track extent
507 struct interval_node **crp_node; /**< buffer for tree nodes
508 * vector of fixed size
510 int crp_cnt; /**< # of used nodes */
511 int crp_max; /**< # of allocated nodes */
514 struct cdt_agent_req {
515 cfs_list_t car_request_list; /**< to chain all the req. */
516 atomic_t car_refcount; /**< reference counter */
517 __u64 car_compound_id; /**< compound id */
518 __u64 car_flags; /**< request original flags */
519 struct obd_uuid car_uuid; /**< agent doing the req. */
520 __u32 car_archive_id; /**< archive id */
521 int car_canceled; /**< request was canceled */
522 cfs_time_t car_req_start; /**< start time */
523 cfs_time_t car_req_update; /**< last update time */
524 struct hsm_action_item *car_hai; /**< req. to the agent */
525 struct cdt_req_progress car_progress; /**< track data mvt
528 extern struct kmem_cache *mdt_hsm_car_kmem;
531 cfs_list_t ha_list; /**< to chain the agents */
532 struct obd_uuid ha_uuid; /**< agent uuid */
533 __u32 *ha_archive_id; /**< archive id */
534 int ha_archive_cnt; /**< number of archive entries
535 * 0 means any archive */
536 atomic_t ha_requests; /**< current request count */
537 atomic_t ha_success; /**< number of successful
539 atomic_t ha_failure; /**< number of failed actions */
542 struct cdt_restore_handle {
543 cfs_list_t crh_list; /**< to chain the handle */
544 struct lu_fid crh_fid; /**< fid of the object */
545 struct ldlm_extent crh_extent; /**< extent of the restore */
546 struct mdt_lock_handle crh_lh; /**< lock handle */
548 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
550 static inline const struct md_device_operations *
551 mdt_child_ops(struct mdt_device * m)
553 LASSERT(m->mdt_child);
554 return m->mdt_child->md_ops;
557 static inline struct md_object *mdt_object_child(struct mdt_object *o)
560 return lu2md(lu_object_next(&o->mot_obj));
563 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
565 return info->mti_pill ? info->mti_pill->rc_req : NULL;
568 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
570 LASSERT(info->mti_exp);
571 return exp_connect_flags(info->mti_exp);
574 static inline void mdt_object_get(const struct lu_env *env,
575 struct mdt_object *o)
578 lu_object_get(&o->mot_obj);
582 static inline void mdt_object_put(const struct lu_env *env,
583 struct mdt_object *o)
586 lu_object_put(env, &o->mot_obj);
590 static inline int mdt_object_exists(const struct mdt_object *o)
592 return lu_object_exists(&o->mot_obj);
595 static inline int mdt_object_remote(const struct mdt_object *o)
597 return lu_object_remote(&o->mot_obj);
600 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
602 return lu_object_fid(&o->mot_obj);
605 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
607 return mdt->mdt_lu_dev.ld_site;
610 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
612 return &mdt->mdt_seq_site;
615 static inline void mdt_export_evict(struct obd_export *exp)
617 class_fail_export(exp);
618 class_export_put(exp);
621 /* Here we use LVB_TYPE to check dne client, because it is
622 * also landed on 2.4. */
623 static inline int mdt_is_dne_client(struct obd_export *exp)
625 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
628 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
629 void mdt_set_disposition(struct mdt_thread_info *info,
630 struct ldlm_reply *rep, int flag);
631 void mdt_clear_disposition(struct mdt_thread_info *info,
632 struct ldlm_reply *rep, int flag);
634 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
635 ldlm_mode_t lock_mode,
636 const struct lu_name *lname);
638 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
641 int mdt_lock_setup(struct mdt_thread_info *info,
642 struct mdt_object *o,
643 struct mdt_lock_handle *lh);
645 int mdt_object_lock(struct mdt_thread_info *,
647 struct mdt_lock_handle *,
650 int mdt_object_lock_try(struct mdt_thread_info *,
652 struct mdt_lock_handle *,
655 void mdt_object_unlock(struct mdt_thread_info *,
657 struct mdt_lock_handle *,
660 struct mdt_object *mdt_object_new(const struct lu_env *,
662 const struct lu_fid *);
663 struct mdt_object *mdt_object_find(const struct lu_env *,
665 const struct lu_fid *);
666 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
667 const struct lu_fid *,
668 struct mdt_lock_handle *,
670 void mdt_object_unlock_put(struct mdt_thread_info *,
672 struct mdt_lock_handle *,
675 void mdt_client_compatibility(struct mdt_thread_info *info);
677 int mdt_remote_object_lock(struct mdt_thread_info *mti,
678 struct mdt_object *o, const struct lu_fid *fid,
679 struct lustre_handle *lh,
680 ldlm_mode_t mode, __u64 ibits);
682 enum mdt_name_flags {
686 int mdt_name_unpack(struct req_capsule *pill,
687 const struct req_msg_field *field,
689 enum mdt_name_flags flags);
690 int mdt_close_unpack(struct mdt_thread_info *info);
691 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
692 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
693 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
694 const struct lu_attr *attr, const struct lu_fid *fid);
696 int mdt_getxattr(struct mdt_thread_info *info);
697 int mdt_reint_setxattr(struct mdt_thread_info *info,
698 struct mdt_lock_handle *lh);
700 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
701 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
703 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
704 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
705 struct mdt_lock_handle *lhc);
707 extern void target_recovery_fini(struct obd_device *obd);
708 extern void target_recovery_init(struct lu_target *lut,
709 svc_handler_t handler);
710 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
711 struct obd_device *, struct lustre_sb_info *lsi);
712 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
714 int mdt_export_stats_init(struct obd_device *obd,
715 struct obd_export *exp,
718 int mdt_lock_new_child(struct mdt_thread_info *info,
719 struct mdt_object *o,
720 struct mdt_lock_handle *child_lockh);
722 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
725 int mdt_reint_open(struct mdt_thread_info *info,
726 struct mdt_lock_handle *lhc);
728 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
729 const struct lustre_handle *handle,
733 MDT_IOEPOCH_CLOSED = 0,
734 MDT_IOEPOCH_OPENED = 1,
735 MDT_IOEPOCH_GETATTR = 2,
743 int mdt_get_info(struct tgt_session_info *tsi);
744 int mdt_attr_get_complex(struct mdt_thread_info *info,
745 struct mdt_object *o, struct md_attr *ma);
746 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
747 struct md_attr *ma, const char *name);
748 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
750 int mdt_object_is_som_enabled(struct mdt_object *mo);
751 int mdt_write_get(struct mdt_object *o);
752 void mdt_write_put(struct mdt_object *o);
753 int mdt_write_read(struct mdt_object *o);
754 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
755 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
756 void mdt_mfd_free(struct mdt_file_data *mfd);
757 int mdt_close(struct tgt_session_info *tsi);
758 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
759 struct md_attr *ma, int flags);
760 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
762 int mdt_done_writing(struct tgt_session_info *tsi);
763 int mdt_fix_reply(struct mdt_thread_info *info);
764 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
765 const struct md_attr *);
766 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
768 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
769 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
770 const void *area, ssize_t len);
772 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
773 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
775 int mdt_check_ucred(struct mdt_thread_info *);
776 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
777 int mdt_init_ucred_reint(struct mdt_thread_info *);
778 void mdt_exit_ucred(struct mdt_thread_info *);
779 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
780 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
781 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
783 void mdt_thread_info_init(struct ptlrpc_request *req,
784 struct mdt_thread_info *mti);
785 void mdt_thread_info_fini(struct mdt_thread_info *mti);
786 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
788 extern struct lprocfs_vars lprocfs_mds_module_vars[];
789 extern struct lprocfs_vars lprocfs_mds_obd_vars[];
791 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
792 const struct md_hsm *mh);
794 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
795 void *data, int flag);
796 int mdt_links_read(struct mdt_thread_info *info,
797 struct mdt_object *mdt_obj,
798 struct linkea_data *ldata);
800 int mdt_init_idmap(struct tgt_session_info *tsi);
801 void mdt_cleanup_idmap(struct mdt_export_data *);
802 int mdt_handle_idmap(struct tgt_session_info *tsi);
803 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
804 struct ptlrpc_user_desc *);
805 void mdt_body_reverse_idmap(struct mdt_thread_info *,
807 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
808 struct mdt_remote_perm *);
809 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
811 static inline struct mdt_device *mdt_dev(struct lu_device *d)
813 return container_of0(d, struct mdt_device, mdt_lu_dev);
816 static inline struct mdt_object *mdt_obj(struct lu_object *o)
818 return container_of0(o, struct mdt_object, mot_obj);
821 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
823 struct lu_object *lo;
824 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
826 lo = lu_object_locate(mo->mot_obj.lo_header,
827 mdt->mdt_bottom->dd_lu_dev.ld_type);
832 /* mdt/mdt_identity.c */
833 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
835 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
837 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
839 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
841 void mdt_flush_identity(struct upcall_cache *, int);
843 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
845 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
848 int mdt_hsm_state_get(struct tgt_session_info *tsi);
849 int mdt_hsm_state_set(struct tgt_session_info *tsi);
850 int mdt_hsm_action(struct tgt_session_info *tsi);
851 int mdt_hsm_progress(struct tgt_session_info *tsi);
852 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
853 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
854 int mdt_hsm_request(struct tgt_session_info *tsi);
856 /* mdt/mdt_hsm_cdt_actions.c */
857 extern const struct file_operations mdt_hsm_actions_fops;
858 void dump_llog_agent_req_rec(const char *prefix,
859 const struct llog_agent_req_rec *larr);
860 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
861 llog_cb_t cb, void *data);
862 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
863 __u64 compound_id, __u32 archive_id,
864 __u64 flags, struct hsm_action_item *hai);
865 int mdt_agent_record_update(const struct lu_env *env,
866 struct mdt_device *mdt, __u64 *cookies,
867 int cookies_count, enum agent_req_status status);
868 int mdt_agent_llog_update_rec(const struct lu_env *env, struct mdt_device *mdt,
869 struct llog_handle *llh,
870 struct llog_agent_req_rec *larr);
872 /* mdt/mdt_hsm_cdt_agent.c */
873 extern const struct file_operations mdt_hsm_agent_fops;
874 int mdt_hsm_agent_register(struct mdt_thread_info *info,
875 const struct obd_uuid *uuid,
876 int nr_archives, __u32 *archive_num);
877 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
878 const struct obd_uuid *uuid,
880 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
881 const struct obd_uuid *uuid);
882 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
883 int succ_rq, int fail_rq, int new_rq,
884 const struct obd_uuid *uuid);
885 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
886 struct obd_uuid *uuid);
887 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
889 int mdt_hsm_coordinator_update(struct mdt_thread_info *mti,
890 struct hsm_progress_kernel *pgs);
891 /* mdt/mdt_hsm_cdt_client.c */
892 int mdt_hsm_add_actions(struct mdt_thread_info *info,
893 struct hsm_action_list *hal, __u64 *compound_id);
894 int mdt_hsm_get_actions(struct mdt_thread_info *mti,
895 struct hsm_action_list *hal);
896 int mdt_hsm_get_running(struct mdt_thread_info *mti,
897 struct hsm_action_list *hal);
898 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
899 const struct lu_fid *fid);
900 /* mdt/mdt_hsm_cdt_requests.c */
901 extern const struct file_operations mdt_hsm_active_requests_fops;
902 void dump_requests(char *prefix, struct coordinator *cdt);
903 struct cdt_agent_req *mdt_cdt_alloc_request(__u64 compound_id, __u32 archive_id,
904 __u64 flags, struct obd_uuid *uuid,
905 struct hsm_action_item *hai);
906 void mdt_cdt_free_request(struct cdt_agent_req *car);
907 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
908 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt,
910 const struct lu_fid *fid);
911 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
912 void mdt_cdt_get_request(struct cdt_agent_req *car);
913 void mdt_cdt_put_request(struct cdt_agent_req *car);
914 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
915 const struct hsm_progress_kernel *pgs);
916 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
917 /* mdt/mdt_coordinator.c */
918 void mdt_hsm_dump_hal(int level, const char *prefix,
919 struct hsm_action_list *hal);
920 /* coordinator management */
921 int mdt_hsm_cdt_init(struct mdt_device *mdt);
922 int mdt_hsm_cdt_start(struct mdt_device *mdt);
923 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
924 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
925 int mdt_hsm_cdt_wakeup(struct mdt_device *mdt);
927 /* coordinator control /proc interface */
928 int lprocfs_wr_hsm_cdt_control(struct file *file, const char *buffer,
929 unsigned long count, void *data);
930 int lprocfs_rd_hsm_cdt_control(char *page, char **start, off_t off,
931 int count, int *eof, void *data);
932 int hsm_cdt_procfs_init(struct mdt_device *mdt);
933 void hsm_cdt_procfs_fini(struct mdt_device *mdt);
934 struct lprocfs_vars *hsm_cdt_get_proc_vars(void);
936 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
937 const struct lu_fid *fid,
939 /* actions/request helpers */
940 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
941 struct hsm_action_list *hal, struct obd_uuid *uuid);
942 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
943 const int hal_an, const __u64 rq_flags,
944 const struct md_hsm *hsm);
945 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
946 struct hsm_progress_kernel *pgs,
947 const int update_record);
949 extern struct lu_context_key mdt_thread_key;
951 /* debug issues helper starts here*/
952 static inline int mdt_fail_write(const struct lu_env *env,
953 struct dt_device *dd, int id)
955 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
956 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
958 return dd->dd_ops->dt_ro(env, dd);
959 /* We set FAIL_ONCE because we never "un-fail" a device */
965 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
967 return &req->rq_export->exp_mdt_data;
970 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
972 return mdt_dev(exp->exp_obd->obd_lu_dev);
975 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
976 struct mdt_lock_handle *lhc);
977 static inline int mdt_check_resent(struct mdt_thread_info *info,
978 mdt_reconstruct_t reconstruct,
979 struct mdt_lock_handle *lhc)
981 struct ptlrpc_request *req = mdt_info_req(info);
984 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
985 if (req_xid_is_last(req)) {
986 reconstruct(info, lhc);
989 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
990 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
995 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
996 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
998 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1000 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1003 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1005 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1006 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
1007 struct lustre_handle *lh,
1009 ldlm_policy_data_t *policy,
1010 const struct ldlm_res_id *res_id,
1011 __u64 flags, const __u64 *client_cookie)
1015 LASSERT(ns != NULL);
1016 LASSERT(lh != NULL);
1018 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
1019 mode, &flags, mdt_blocking_ast,
1020 ldlm_completion_ast, NULL, NULL, 0,
1021 LVB_T_NONE, client_cookie, lh);
1022 return rc == ELDLM_OK ? 0 : -EIO;
1025 static inline void mdt_fid_unlock(struct lustre_handle *lh,
1028 ldlm_lock_decref(lh, mode);
1031 extern mdl_mode_t mdt_mdl_lock_modes[];
1032 extern ldlm_mode_t mdt_dlm_lock_modes[];
1034 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
1036 LASSERT(IS_PO2(mode));
1037 return mdt_mdl_lock_modes[mode];
1040 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1042 LASSERT(IS_PO2(mode));
1043 return mdt_dlm_lock_modes[mode];
1047 extern struct ldlm_valblock_ops mdt_lvbo;
1049 void mdt_enable_cos(struct mdt_device *, int);
1050 int mdt_cos_is_enabled(struct mdt_device *);
1068 LPROC_MDT_SAMEDIR_RENAME,
1069 LPROC_MDT_CROSSDIR_RENAME,
1072 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1073 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1074 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
1075 void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars);
1076 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1077 void mdt_procfs_fini(struct mdt_device *mdt);
1079 /* lustre/mdt_mdt_lproc.c */
1080 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1082 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1083 struct mdt_device *mdt,
1084 struct ptlrpc_request *req,
1085 struct mdt_object *src, struct mdt_object *tgt);
1088 int mdt_ck_thread_start(struct mdt_device *mdt);
1089 void mdt_ck_thread_stop(struct mdt_device *mdt);
1090 void mdt_ck_timer_callback(unsigned long castmeharder);
1091 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
1092 void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
1093 const struct lu_fid *fid, struct lustre_capa *capa);
1094 void mdt_dump_capainfo(struct mdt_thread_info *info);
1096 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1098 return mdt->mdt_lu_dev.ld_obd;
1101 extern const struct lu_device_operations mdt_lu_ops;
1103 static inline char *mdt_obd_name(struct mdt_device *mdt)
1105 return mdt->mdt_lu_dev.ld_obd->obd_name;
1108 int mds_mod_init(void);
1109 void mds_mod_exit(void);
1111 #endif /* __KERNEL__ */