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 <obd_class.h>
54 #include <lustre_net.h>
55 #include <lustre/lustre_idl.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_mdt.h>
62 #include <lustre_req_layout.h>
63 #include <lustre_sec.h>
65 #include <lustre_idmap.h>
66 #include <lustre_eacl.h>
67 #include <lustre_quota.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 int 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 0x0000000000000001ULL
90 #define CDT_NORETRY_ACTION 0x0000000000000002ULL
91 #define CDT_POLICY_MASK CDT_NONBLOCKING_RESTORE | \
94 /* when adding a new policy, do not forget to update
95 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
97 #define CDT_DEFAULT_POLICY 0x0000000000000000ULL
99 enum cdt_states { CDT_STOPPED = 0,
105 /* when multiple lock are needed, the lock order is
113 struct ptlrpc_thread *cdt_thread; /**< coordinator thread */
114 struct lu_env cdt_env; /**< coordinator lustre
116 struct proc_dir_entry *cdt_proc_dir; /**< cdt /proc directory */
117 __u64 cdt_policy; /**< flags to defined
119 enum cdt_states cdt_state; /**< state */
120 cfs_atomic_t cdt_compound_id; /**< compound id counter */
121 __u64 cdt_last_cookie; /**< last cookie allocated */
122 struct semaphore cdt_counter_lock; /**< protect request
124 struct semaphore cdt_llog_lock; /**< protect llog access */
125 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
126 struct rw_semaphore cdt_request_lock; /**< protect request list */
127 struct semaphore cdt_restore_lock; /**< protect restore list */
128 cfs_time_t cdt_loop_period; /**< llog scan period */
129 cfs_time_t cdt_delay; /**< request grace delay */
130 cfs_time_t cdt_timeout; /**< request timeout */
131 __u64 cdt_max_request; /**< max count of started
133 __u64 cdt_request_count; /**< current count of
134 * started requests */
135 cfs_list_t cdt_requests; /**< list of started
137 cfs_list_t cdt_agents; /**< list of register
139 cfs_list_t cdt_restore_hdl; /**< list of restore lock
143 /* mdt state flag bits */
144 #define MDT_FL_CFGLOG 0
145 #define MDT_FL_SYNCED 1
149 struct lu_device mdt_lu_dev;
150 struct seq_server_site mdt_seq_site;
151 /* DLM name-space for meta-data locks maintained by this server */
152 struct ldlm_namespace *mdt_namespace;
153 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
154 struct ptlrpc_client *mdt_ldlm_client;
155 /* underlying device */
156 struct obd_export *mdt_child_exp;
157 struct md_device *mdt_child;
158 struct dt_device *mdt_bottom;
159 struct obd_export *mdt_bottom_exp;
161 struct lu_target mdt_lut;
163 * Options bit-fields.
166 unsigned int mo_user_xattr:1,
174 /* mdt state flags */
175 unsigned long mdt_state;
176 /* lock to protect IOepoch */
177 spinlock_t mdt_ioepoch_lock;
180 /* transaction callbacks */
181 struct dt_txn_callback mdt_txn_cb;
183 /* these values should be updated from lov if necessary.
184 * or should be placed somewhere else. */
186 int mdt_max_cookiesize;
188 struct upcall_cache *mdt_identity_cache;
191 rwlock_t mdt_sptlrpc_lock;
192 struct sptlrpc_rule_set mdt_sptlrpc_rset;
194 /* capability keys */
195 unsigned long mdt_capa_timeout;
197 struct dt_object *mdt_ck_obj;
198 unsigned long mdt_ck_timeout;
199 unsigned long mdt_ck_expiry;
200 cfs_timer_t mdt_ck_timer;
201 struct ptlrpc_thread mdt_ck_thread;
202 struct lustre_capa_key mdt_capa_keys[2];
203 unsigned int mdt_capa_conf:1,
205 /* Enable remote dir on non-MDT0 */
206 mdt_enable_remote_dir:1;
208 gid_t mdt_enable_remote_dir_gid;
209 /* statfs optimization: we cache a bit */
210 struct obd_statfs mdt_osfs;
212 spinlock_t mdt_osfs_lock;
215 uid_t mdt_squash_uid;
216 gid_t mdt_squash_gid;
217 cfs_list_t mdt_nosquash_nids;
218 char *mdt_nosquash_str;
219 int mdt_nosquash_strlen;
220 struct rw_semaphore mdt_squash_sem;
223 struct rename_stats mdt_rename_stats;
224 struct lu_fid mdt_md_root_fid;
226 /* connection to quota master */
227 struct obd_export *mdt_qmt_exp;
228 /* quota master device associated with this MDT */
229 struct lu_device *mdt_qmt_dev;
231 struct coordinator mdt_coordinator;
234 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
235 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
236 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \
237 OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR | \
238 OBD_INCOMPAT_LMM_VER | OBD_INCOMPAT_MULTI_OI)
239 #define MDT_COS_DEFAULT (0)
242 struct lu_object_header mot_header;
243 struct lu_object mot_obj;
246 int mot_ioepoch_count;
248 /* Lock to protect object's IO epoch. */
249 struct mutex mot_ioepoch_mutex;
250 /* Lock to protect create_data */
251 struct mutex mot_lov_mutex;
254 enum mdt_object_flags {
255 /** SOM attributes are changed. */
256 MOF_SOM_CHANGE = (1 << 0),
258 * The SOM recovery state for mdt object.
259 * This state is an in-memory equivalent of an absent SOM EA, used
260 * instead of invalidating SOM EA while IOEpoch is still opened when
261 * a client eviction occurs or a client fails to obtain SOM attributes.
262 * It indicates that the last IOEpoch holder will need to obtain SOM
263 * attributes under [0;EOF] extent lock to flush all the client's
264 * cached of evicted from MDS clients (but not necessary evicted from
265 * OST) before taking ost attributes.
267 MOF_SOM_RECOV = (1 << 1),
268 /** File has been just created. */
269 MOF_SOM_CREATED = (1 << 2),
270 /** lov object has been created. */
271 MOF_LOV_CREATED = (1 << 3),
274 struct mdt_lock_handle {
275 /* Lock type, reg for cross-ref use or pdo lock. */
279 struct lustre_handle mlh_reg_lh;
280 ldlm_mode_t mlh_reg_mode;
283 struct lustre_handle mlh_pdo_lh;
284 ldlm_mode_t mlh_pdo_mode;
285 unsigned int mlh_pdo_hash;
287 /* Remote regular lock */
288 struct lustre_handle mlh_rreg_lh;
289 ldlm_mode_t mlh_rreg_mode;
293 MDT_LH_PARENT, /* parent lockh */
294 MDT_LH_CHILD, /* child lockh */
295 MDT_LH_OLD, /* old lockh for rename */
296 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
297 MDT_LH_NEW, /* new lockh for rename */
298 MDT_LH_RMT, /* used for return lh to caller */
307 struct mdt_reint_record {
308 mdt_reint_t rr_opcode;
309 const struct lustre_handle *rr_handle;
310 const struct lu_fid *rr_fid1;
311 const struct lu_fid *rr_fid2;
316 const void *rr_eadata;
319 const struct llog_cookie *rr_logcookies;
323 enum mdt_reint_flag {
324 MRF_OPEN_TRUNC = 1 << 0,
327 struct mdt_thread_info;
329 typedef int (*tx_exec_func_t)(const struct lu_env *, struct thandle *,
333 tx_exec_func_t exec_fn;
334 tx_exec_func_t undo_fn;
335 struct dt_object *object;
337 struct update_reply *reply;
342 const struct dt_rec *rec;
343 const struct dt_key *key;
358 struct dt_allocation_hint hint;
359 struct dt_object_format dof;
367 struct ost_body *body;
372 #define TX_MAX_OPS 10
373 struct thandle_exec_args {
374 struct thandle *ta_handle;
375 struct dt_device *ta_dev;
377 struct tx_arg ta_args[TX_MAX_OPS];
378 int ta_argno; /* used args */
382 * Common data shared by mdt-level handlers. This is allocated per-thread to
383 * reduce stack consumption.
385 struct mdt_thread_info {
388 * The following members will be filled explicitly
389 * with specific data in mdt_thread_info_init().
391 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
392 * request handling may migrate from one server thread to another.
394 struct req_capsule *mti_pill;
396 /* although we have export in req, there are cases when it is not
397 * available, e.g. closing files upon export destroy */
398 struct obd_export *mti_exp;
400 * A couple of lock handles.
402 struct mdt_lock_handle mti_lh[MDT_LH_NR];
404 struct mdt_device *mti_mdt;
405 const struct lu_env *mti_env;
408 * Additional fail id that can be set by handler. Passed to
409 * target_send_reply().
413 /* transaction number of current request */
419 * The following members will be filled expilictly
420 * with zero in mdt_thread_info_init(). These members may be used
427 struct md_attr mti_attr;
429 * Body for "habeo corpus" operations.
431 const struct mdt_body *mti_body;
433 * Host object. This is released at the end of mdt_handler().
435 struct mdt_object *mti_object;
437 * Lock request for "habeo clavis" operations.
439 const struct ldlm_request *mti_dlm_req;
441 __u32 mti_has_trans:1, /* has txn already? */
444 /* opdata for mdt_reint_open(), has the same as
445 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
446 * value onto disk for recovery when mdt_trans_stop_cb() is called.
452 * The following members will be filled explicitly
453 * with zero in mdt_reint_unpack(), because they are only used
454 * by reint requests (including mdt_reint_open()).
458 * reint record. contains information for reint operations.
460 struct mdt_reint_record mti_rr;
462 /** md objects included in operation */
463 struct mdt_object *mti_mos;
464 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
466 * Operation specification (currently create and lookup)
468 struct md_op_spec mti_spec;
472 * The following members will _NOT_ be initialized at all.
473 * DO NOT expect them to contain any valid value.
474 * They should be initialized explicitly by the user themselves.
477 /* XXX: If something is in a union, make sure they do not conflict */
479 struct lu_fid mti_tmp_fid1;
480 struct lu_fid mti_tmp_fid2;
481 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
482 * mdt_rename_lock() */
483 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
486 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
487 char ns_name[48]; /* for mdt_init0() */
488 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
489 struct obd_statfs osfs; /* for mdt_statfs() */
491 /* for mdt_readpage() */
492 struct lu_rdpg mti_rdpg;
493 /* for mdt_sendpage() */
494 struct l_wait_info mti_wait_info;
498 struct md_som_data data;
501 struct dt_object_format mti_update_dof;
502 struct update_reply *mti_update_reply;
503 struct update *mti_update;
504 int mti_update_reply_index;
505 struct obdo mti_obdo;
506 struct dt_object *mti_dt_object;
510 /* IO epoch related stuff. */
511 struct mdt_ioepoch *mti_ioepoch;
512 __u64 mti_replayepoch;
515 struct lu_buf mti_buf;
516 struct lu_buf mti_big_buf;
517 struct lustre_capa_key mti_capa_key;
519 /* Ops object filename */
520 struct lu_name mti_name;
521 /* per-thread values, can be re-used */
524 /* big_lmm buffer was used and must be used in reply */
525 int mti_big_lmm_used;
526 /* should be enough to fit lustre_mdt_attrs */
527 char mti_xattr_buf[128];
528 struct thandle_exec_args mti_handle;
529 struct ldlm_enqueue_info mti_einfo;
532 /* ptlrpc request handler for MDT. All handlers are
533 * grouped into several slices - struct mdt_opc_slice,
534 * and stored in an array - mdt_handlers[].
537 /* The name of this handler. */
539 /* Fail id for this handler, checked at the beginning of this handler*/
541 /* Operation code for this handler */
543 /* flags are listed in enum mdt_handler_flags below. */
545 /* The actual handler function to execute. */
546 int (*mh_act)(struct mdt_thread_info *info);
547 /* Request format for this request. */
548 const struct req_format *mh_fmt;
551 enum mdt_handler_flags {
553 * struct mdt_body is passed in the incoming message, and object
554 * identified by this fid exists on disk.
556 * "habeo corpus" == "I have a body"
558 HABEO_CORPUS = (1 << 0),
560 * struct ldlm_request is passed in the incoming message.
562 * "habeo clavis" == "I have a key"
564 HABEO_CLAVIS = (1 << 1),
566 * this request has fixed reply format, so that reply message can be
567 * packed by generic code.
569 * "habeo refero" == "I have a reply"
571 HABEO_REFERO = (1 << 2),
573 * this request will modify something, so check whether the filesystem
574 * is readonly or not, then return -EROFS to client asap if necessary.
576 * "mutabor" == "I shall modify"
581 struct mdt_opc_slice {
584 struct mdt_handler *mos_hs;
587 static inline const struct md_device_operations *
588 mdt_child_ops(struct mdt_device * m)
590 LASSERT(m->mdt_child);
591 return m->mdt_child->md_ops;
594 static inline struct md_object *mdt_object_child(struct mdt_object *o)
597 return lu2md(lu_object_next(&o->mot_obj));
600 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
602 return info->mti_pill ? info->mti_pill->rc_req : NULL;
605 static inline int req_is_replay(struct ptlrpc_request *req)
607 LASSERT(req->rq_reqmsg);
608 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
611 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
613 LASSERT(info->mti_exp);
614 return exp_connect_flags(info->mti_exp);
617 static inline void mdt_object_get(const struct lu_env *env,
618 struct mdt_object *o)
621 lu_object_get(&o->mot_obj);
625 static inline void mdt_object_put(const struct lu_env *env,
626 struct mdt_object *o)
629 lu_object_put(env, &o->mot_obj);
633 static inline int mdt_object_exists(const struct mdt_object *o)
635 return lu_object_exists(&o->mot_obj);
638 static inline int mdt_object_remote(const struct mdt_object *o)
640 return lu_object_remote(&o->mot_obj);
643 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
645 return lu_object_fid(&o->mot_obj);
648 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
650 return mdt->mdt_lu_dev.ld_site;
653 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
655 return &mdt->mdt_seq_site;
658 static inline void mdt_export_evict(struct obd_export *exp)
660 class_fail_export(exp);
661 class_export_put(exp);
664 /* Here we use LVB_TYPE to check dne client, because it is
665 * also landed on 2.4. */
666 static inline int mdt_is_dne_client(struct obd_export *exp)
668 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
671 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
672 void mdt_set_disposition(struct mdt_thread_info *info,
673 struct ldlm_reply *rep, int flag);
674 void mdt_clear_disposition(struct mdt_thread_info *info,
675 struct ldlm_reply *rep, int flag);
677 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
678 ldlm_mode_t lm, const char *name,
681 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
684 int mdt_lock_setup(struct mdt_thread_info *info,
685 struct mdt_object *o,
686 struct mdt_lock_handle *lh);
688 int mdt_object_lock(struct mdt_thread_info *,
690 struct mdt_lock_handle *,
693 int mdt_object_lock_try(struct mdt_thread_info *,
695 struct mdt_lock_handle *,
698 void mdt_object_unlock(struct mdt_thread_info *,
700 struct mdt_lock_handle *,
703 struct mdt_object *mdt_object_new(const struct lu_env *,
705 const struct lu_fid *);
706 struct mdt_object *mdt_object_find(const struct lu_env *,
708 const struct lu_fid *);
709 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
710 const struct lu_fid *,
711 struct mdt_lock_handle *,
713 void mdt_object_unlock_put(struct mdt_thread_info *,
715 struct mdt_lock_handle *,
718 void mdt_client_compatibility(struct mdt_thread_info *info);
720 int mdt_remote_object_lock(struct mdt_thread_info *mti,
721 struct mdt_object *o, struct lustre_handle *lh,
722 ldlm_mode_t mode, __u64 ibits);
723 int mdt_close_unpack(struct mdt_thread_info *info);
724 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
725 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
726 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
727 const struct lu_attr *attr, const struct lu_fid *fid);
729 int mdt_getxattr(struct mdt_thread_info *info);
730 int mdt_reint_setxattr(struct mdt_thread_info *info,
731 struct mdt_lock_handle *lh);
733 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
734 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
736 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
737 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
738 struct mdt_lock_handle *lhc);
740 extern void target_recovery_fini(struct obd_device *obd);
741 extern void target_recovery_init(struct lu_target *lut,
742 svc_handler_t handler);
743 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
744 struct obd_device *, struct lustre_sb_info *lsi);
745 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
747 int mdt_export_stats_init(struct obd_device *obd,
748 struct obd_export *exp,
751 int mdt_pin(struct mdt_thread_info* info);
753 int mdt_lock_new_child(struct mdt_thread_info *info,
754 struct mdt_object *o,
755 struct mdt_lock_handle *child_lockh);
757 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
760 int mdt_reint_open(struct mdt_thread_info *info,
761 struct mdt_lock_handle *lhc);
763 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
764 const struct lustre_handle *);
767 MDT_IOEPOCH_CLOSED = 0,
768 MDT_IOEPOCH_OPENED = 1,
769 MDT_IOEPOCH_GETATTR = 2,
777 int mdt_attr_get_complex(struct mdt_thread_info *info,
778 struct mdt_object *o, struct md_attr *ma);
779 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
781 int mdt_object_is_som_enabled(struct mdt_object *mo);
782 int mdt_write_get(struct mdt_object *o);
783 void mdt_write_put(struct mdt_object *o);
784 int mdt_write_read(struct mdt_object *o);
785 struct mdt_file_data *mdt_mfd_new(void);
786 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
787 void mdt_mfd_free(struct mdt_file_data *mfd);
788 int mdt_close(struct mdt_thread_info *info);
789 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
790 struct md_attr *ma, int flags);
791 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
793 int mdt_done_writing(struct mdt_thread_info *info);
794 int mdt_fix_reply(struct mdt_thread_info *info);
795 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
796 const struct md_attr *);
797 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
799 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
800 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
801 const void *area, ssize_t len);
803 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
805 int mdt_check_ucred(struct mdt_thread_info *);
806 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
807 int mdt_init_ucred_reint(struct mdt_thread_info *);
808 void mdt_exit_ucred(struct mdt_thread_info *);
809 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
810 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
811 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
813 int mdt_handle_common(struct ptlrpc_request *req,
814 struct mdt_opc_slice *supported);
815 int mdt_connect(struct mdt_thread_info *info);
816 int mdt_disconnect(struct mdt_thread_info *info);
817 int mdt_set_info(struct mdt_thread_info *info);
818 int mdt_get_info(struct mdt_thread_info *info);
819 int mdt_getstatus(struct mdt_thread_info *info);
820 int mdt_getattr(struct mdt_thread_info *info);
821 int mdt_getattr_name(struct mdt_thread_info *info);
822 int mdt_statfs(struct mdt_thread_info *info);
823 int mdt_reint(struct mdt_thread_info *info);
824 int mdt_sync(struct mdt_thread_info *info);
825 int mdt_is_subdir(struct mdt_thread_info *info);
826 int mdt_obd_ping(struct mdt_thread_info *info);
827 int mdt_obd_log_cancel(struct mdt_thread_info *info);
828 int mdt_obd_qc_callback(struct mdt_thread_info *info);
829 int mdt_enqueue(struct mdt_thread_info *info);
830 int mdt_convert(struct mdt_thread_info *info);
831 int mdt_bl_callback(struct mdt_thread_info *info);
832 int mdt_cp_callback(struct mdt_thread_info *info);
833 int mdt_llog_create(struct mdt_thread_info *info);
834 int mdt_llog_destroy(struct mdt_thread_info *info);
835 int mdt_llog_read_header(struct mdt_thread_info *info);
836 int mdt_llog_next_block(struct mdt_thread_info *info);
837 int mdt_llog_prev_block(struct mdt_thread_info *info);
838 int mdt_sec_ctx_handle(struct mdt_thread_info *info);
839 int mdt_readpage(struct mdt_thread_info *info);
840 int mdt_obd_idx_read(struct mdt_thread_info *info);
842 extern struct mdt_opc_slice mdt_regular_handlers[];
843 extern struct mdt_opc_slice mdt_seq_handlers[];
844 extern struct mdt_opc_slice mdt_fld_handlers[];
846 int mdt_quotacheck(struct mdt_thread_info *info);
847 int mdt_quotactl(struct mdt_thread_info *info);
848 int mdt_quota_dqacq(struct mdt_thread_info *info);
849 int mdt_swap_layouts(struct mdt_thread_info *info);
851 extern struct lprocfs_vars lprocfs_mds_module_vars[];
852 extern struct lprocfs_vars lprocfs_mds_obd_vars[];
854 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
857 struct mdt_handler *mdt_handler_find(__u32 opc,
858 struct mdt_opc_slice *supported);
860 int mdt_init_sec_level(struct mdt_thread_info *);
861 int mdt_init_idmap(struct mdt_thread_info *);
862 void mdt_cleanup_idmap(struct mdt_export_data *);
863 int mdt_handle_idmap(struct mdt_thread_info *);
864 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
865 struct ptlrpc_user_desc *);
866 void mdt_body_reverse_idmap(struct mdt_thread_info *,
868 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
869 struct mdt_remote_perm *);
870 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
872 static inline struct mdt_device *mdt_dev(struct lu_device *d)
874 return container_of0(d, struct mdt_device, mdt_lu_dev);
877 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
879 struct lu_object *lo;
880 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
882 lo = lu_object_locate(mo->mot_obj.lo_header,
883 mdt->mdt_bottom->dd_lu_dev.ld_type);
888 /* mdt/mdt_identity.c */
889 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
891 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
893 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
895 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
897 void mdt_flush_identity(struct upcall_cache *, int);
899 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
901 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
904 int mdt_hsm_state_get(struct mdt_thread_info *info);
905 int mdt_hsm_state_set(struct mdt_thread_info *info);
906 int mdt_hsm_action(struct mdt_thread_info *info);
907 int mdt_hsm_progress(struct mdt_thread_info *info);
908 int mdt_hsm_ct_register(struct mdt_thread_info *info);
909 int mdt_hsm_ct_unregister(struct mdt_thread_info *info);
910 int mdt_hsm_request(struct mdt_thread_info *info);
911 /* HSM restore cannot be active yet, until the coordinator
912 * patch is landed, so this function always returns false for now, but
913 * allows the other parts of the code to start checking for this.
915 static inline bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
916 const struct lu_fid *fid)
921 /* mdt/mdt_hsm_cdt_actions.c */
922 extern const struct file_operations mdt_agent_actions_fops;
923 void dump_llog_agent_req_rec(char *prefix, struct llog_agent_req_rec *larr);
924 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
925 llog_cb_t cb, void *data);
926 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
927 __u64 compound_id, __u32 archive_id,
928 __u64 flags, struct hsm_action_item *hai);
929 int mdt_agent_record_update(const struct lu_env *env,
930 struct mdt_device *mdt, __u64 *cookies,
931 int cookies_count, enum agent_req_status status);
932 int mdt_agent_llog_update_rec(const struct lu_env *env, struct mdt_device *mdt,
933 struct llog_handle *llh,
934 struct llog_agent_req_rec *larr);
936 extern struct lu_context_key mdt_thread_key;
937 /* debug issues helper starts here*/
938 static inline int mdt_fail_write(const struct lu_env *env,
939 struct dt_device *dd, int id)
941 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
942 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
944 return dd->dd_ops->dt_ro(env, dd);
945 /* We set FAIL_ONCE because we never "un-fail" a device */
951 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
953 return &req->rq_export->exp_mdt_data;
956 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
957 struct mdt_lock_handle *lhc);
958 static inline int mdt_check_resent(struct mdt_thread_info *info,
959 mdt_reconstruct_t reconstruct,
960 struct mdt_lock_handle *lhc)
962 struct ptlrpc_request *req = mdt_info_req(info);
965 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
966 if (req_xid_is_last(req)) {
967 reconstruct(info, lhc);
970 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
971 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
976 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
977 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
979 static inline int is_identity_get_disabled(struct upcall_cache *cache)
981 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
984 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
986 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
987 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
988 struct lustre_handle *lh,
990 ldlm_policy_data_t *policy,
991 const struct ldlm_res_id *res_id,
992 __u64 flags, const __u64 *client_cookie)
999 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
1000 mode, &flags, mdt_blocking_ast,
1001 ldlm_completion_ast, NULL, NULL, 0,
1002 LVB_T_NONE, client_cookie, lh);
1003 return rc == ELDLM_OK ? 0 : -EIO;
1006 static inline void mdt_fid_unlock(struct lustre_handle *lh,
1009 ldlm_lock_decref(lh, mode);
1012 extern mdl_mode_t mdt_mdl_lock_modes[];
1013 extern ldlm_mode_t mdt_dlm_lock_modes[];
1015 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
1017 LASSERT(IS_PO2(mode));
1018 return mdt_mdl_lock_modes[mode];
1021 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1023 LASSERT(IS_PO2(mode));
1024 return mdt_dlm_lock_modes[mode];
1028 extern struct ldlm_valblock_ops mdt_lvbo;
1030 static inline struct lu_name *mdt_name(const struct lu_env *env,
1031 char *name, int namelen)
1033 struct lu_name *lname;
1034 struct mdt_thread_info *mti;
1036 LASSERT(namelen > 0);
1037 /* trailing '\0' in buffer */
1038 LASSERT(name[namelen] == '\0');
1040 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
1041 lname = &mti->mti_name;
1042 lname->ln_name = name;
1043 lname->ln_namelen = namelen;
1047 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
1048 struct lu_name *slname)
1053 tlname->ln_name = slname->ln_name;
1054 tlname->ln_namelen = slname->ln_namelen;
1058 void mdt_enable_cos(struct mdt_device *, int);
1059 int mdt_cos_is_enabled(struct mdt_device *);
1060 int mdt_hsm_copytool_send(struct obd_export *exp);
1078 LPROC_MDT_SAMEDIR_RENAME,
1079 LPROC_MDT_CROSSDIR_RENAME,
1082 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1083 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1084 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
1085 void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars);
1086 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
1087 void mdt_procfs_fini(struct mdt_device *mdt);
1088 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1089 struct mdt_device *mdt,
1090 struct ptlrpc_request *req,
1091 struct mdt_object *src, struct mdt_object *tgt);
1094 int mdt_ck_thread_start(struct mdt_device *mdt);
1095 void mdt_ck_thread_stop(struct mdt_device *mdt);
1096 void mdt_ck_timer_callback(unsigned long castmeharder);
1097 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
1099 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
1100 const struct lu_fid *fid,
1101 struct lustre_capa *capa)
1103 struct md_capainfo *ci;
1105 LASSERT(offset >= 0 && offset < MD_CAPAINFO_MAX);
1106 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
1107 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA))
1110 ci = md_capainfo(info->mti_env);
1112 ci->mc_fid[offset] = *fid;
1113 ci->mc_capa[offset] = capa;
1116 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
1118 struct md_capainfo *ci = md_capainfo(info->mti_env);
1123 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
1124 if (!ci->mc_capa[i]) {
1125 CERROR("no capa for index %d "DFID"\n",
1126 i, PFID(&ci->mc_fid[i]));
1129 if (ci->mc_capa[i] == BYPASS_CAPA) {
1130 CERROR("bypass for index %d "DFID"\n",
1131 i, PFID(&ci->mc_fid[i]));
1134 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
1138 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1140 return mdt->mdt_lu_dev.ld_obd;
1143 extern const struct lu_device_operations mdt_lu_ops;
1145 static inline int lu_device_is_mdt(struct lu_device *d)
1147 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1150 static inline struct mdt_device *lu2mdt_dev(struct lu_device *d)
1152 LASSERTF(lu_device_is_mdt(d), "It is %s instead of MDT %p %p\n",
1153 d->ld_type->ldt_name, d->ld_ops, &mdt_lu_ops);
1154 return container_of0(d, struct mdt_device, mdt_lu_dev);
1157 static inline char *mdt_obd_name(struct mdt_device *mdt)
1159 return mdt->mdt_lu_dev.ld_obd->obd_name;
1162 int mds_mod_init(void);
1163 void mds_mod_exit(void);
1165 /* Update handlers */
1166 int out_handle(struct mdt_thread_info *info);
1168 #define out_tx_create(info, obj, attr, fid, dof, th, reply, idx) \
1169 __out_tx_create(info, obj, attr, fid, dof, th, reply, idx, \
1172 #define out_tx_attr_set(info, obj, attr, th, reply, idx) \
1173 __out_tx_attr_set(info, obj, attr, th, reply, idx, \
1176 #define out_tx_xattr_set(info, obj, buf, name, fl, th, reply, idx) \
1177 __out_tx_xattr_set(info, obj, buf, name, fl, th, reply, idx, \
1180 #define out_tx_ref_add(info, obj, th, reply, idx) \
1181 __out_tx_ref_add(info, obj, th, reply, idx, __FILE__, __LINE__)
1183 #define out_tx_ref_del(info, obj, th, reply, idx) \
1184 __out_tx_ref_del(info, obj, th, reply, idx, __FILE__, __LINE__)
1186 #define out_tx_index_insert(info, obj, th, name, fid, reply, idx) \
1187 __out_tx_index_insert(info, obj, th, name, fid, reply, idx, \
1190 #define out_tx_index_delete(info, obj, th, name, reply, idx) \
1191 __out_tx_index_delete(info, obj, th, name, reply, idx, \
1194 #define out_tx_destroy(info, obj, th, reply, idx) \
1195 __out_tx_destroy(info, obj, th, reply, idx, __FILE__, __LINE__)
1197 #endif /* __KERNEL__ */