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__)
54 * struct ptlrpc_client
56 #include <lustre_net.h>
59 * struct obd_connect_data
60 * struct lustre_handle
62 #include <lustre/lustre_idl.h>
63 #include <lustre_disk.h>
64 #include <lu_target.h>
65 #include <md_object.h>
66 #include <lustre_fid.h>
67 #include <lustre_fld.h>
68 #include <lustre_req_layout.h>
69 #include <lustre_sec.h>
71 #include <lustre_idmap.h>
72 #include <lustre_eacl.h>
73 #include <lustre_fsfilt.h>
74 #include <lustre_quota.h>
76 /* check if request's xid is equal to last one or not*/
77 static inline int req_xid_is_last(struct ptlrpc_request *req)
79 struct lsd_client_data *lcd = req->rq_export->exp_target_data.ted_lcd;
80 return (req->rq_xid == lcd->lcd_last_xid ||
81 req->rq_xid == lcd->lcd_last_close_xid);
85 /* file data for open files on MDS */
86 struct mdt_file_data {
87 struct portals_handle mfd_handle; /* must be first */
88 int mfd_mode; /* open mode provided by client */
89 cfs_list_t mfd_list; /* protected by med_open_lock */
90 __u64 mfd_xid; /* xid of the open request */
91 struct lustre_handle mfd_old_handle; /* old handle in replay case */
92 struct mdt_object *mfd_object; /* point to opened object */
95 /* mdt state flag bits */
96 #define MDT_FL_CFGLOG 0
97 #define MDT_FL_SYNCED 1
101 struct md_device mdt_md_dev;
102 struct seq_server_site mdt_seq_site;
103 struct ptlrpc_service *mdt_regular_service;
104 struct ptlrpc_service *mdt_readpage_service;
105 struct ptlrpc_service *mdt_xmds_service;
106 struct ptlrpc_service *mdt_setattr_service;
107 struct ptlrpc_service *mdt_mdsc_service;
108 struct ptlrpc_service *mdt_mdss_service;
109 struct ptlrpc_service *mdt_dtss_service;
110 struct ptlrpc_service *mdt_fld_service;
111 /* DLM name-space for meta-data locks maintained by this server */
112 struct ldlm_namespace *mdt_namespace;
113 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
114 struct ptlrpc_client *mdt_ldlm_client;
115 /* underlying device */
116 struct obd_export *mdt_child_exp;
117 struct md_device *mdt_child;
118 struct dt_device *mdt_bottom;
119 struct obd_export *mdt_bottom_exp;
121 struct lu_target mdt_lut;
123 * Options bit-fields.
126 signed int mo_user_xattr :1,
133 /* mdt state flags */
134 unsigned long mdt_state;
135 /* lock to protect IOepoch */
136 spinlock_t mdt_ioepoch_lock;
139 /* transaction callbacks */
140 struct dt_txn_callback mdt_txn_cb;
142 /* these values should be updated from lov if necessary.
143 * or should be placed somewhere else. */
145 int mdt_max_cookiesize;
147 struct upcall_cache *mdt_identity_cache;
150 rwlock_t mdt_sptlrpc_lock;
151 struct sptlrpc_rule_set mdt_sptlrpc_rset;
153 /* capability keys */
154 unsigned long mdt_capa_timeout;
156 struct dt_object *mdt_ck_obj;
157 unsigned long mdt_ck_timeout;
158 unsigned long mdt_ck_expiry;
159 cfs_timer_t mdt_ck_timer;
160 struct ptlrpc_thread mdt_ck_thread;
161 struct lustre_capa_key mdt_capa_keys[2];
162 unsigned int mdt_capa_conf:1,
165 /* statfs optimization: we cache a bit */
166 struct obd_statfs mdt_osfs;
168 spinlock_t mdt_osfs_lock;
171 uid_t mdt_squash_uid;
172 gid_t mdt_squash_gid;
173 cfs_list_t mdt_nosquash_nids;
174 char *mdt_nosquash_str;
175 int mdt_nosquash_strlen;
176 struct rw_semaphore mdt_squash_sem;
179 struct rename_stats mdt_rename_stats;
180 struct lu_fid mdt_md_root_fid;
182 /* connection to quota master */
183 struct obd_export *mdt_qmt_exp;
184 /* quota master device associated with this MDT */
185 struct lu_device *mdt_qmt_dev;
188 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
189 #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID)
190 #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \
191 OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR | \
192 OBD_INCOMPAT_LMM_VER | OBD_INCOMPAT_MULTI_OI)
193 #define MDT_COS_DEFAULT (0)
196 struct lu_object_header mot_header;
197 struct md_object mot_obj;
200 int mot_ioepoch_count;
202 /* Lock to protect object's IO epoch. */
203 struct mutex mot_ioepoch_mutex;
204 /* Lock to protect create_data */
205 struct mutex mot_lov_mutex;
208 enum mdt_object_flags {
209 /** SOM attributes are changed. */
210 MOF_SOM_CHANGE = (1 << 0),
212 * The SOM recovery state for mdt object.
213 * This state is an in-memory equivalent of an absent SOM EA, used
214 * instead of invalidating SOM EA while IOEpoch is still opened when
215 * a client eviction occurs or a client fails to obtain SOM attributes.
216 * It indicates that the last IOEpoch holder will need to obtain SOM
217 * attributes under [0;EOF] extent lock to flush all the client's
218 * cached of evicted from MDS clients (but not necessary evicted from
219 * OST) before taking ost attributes.
221 MOF_SOM_RECOV = (1 << 1),
222 /** File has been just created. */
223 MOF_SOM_CREATED = (1 << 2),
224 /** lov object has been created. */
225 MOF_LOV_CREATED = (1 << 3),
228 struct mdt_lock_handle {
229 /* Lock type, reg for cross-ref use or pdo lock. */
233 struct lustre_handle mlh_reg_lh;
234 ldlm_mode_t mlh_reg_mode;
237 struct lustre_handle mlh_pdo_lh;
238 ldlm_mode_t mlh_pdo_mode;
239 unsigned int mlh_pdo_hash;
243 MDT_LH_PARENT, /* parent lockh */
244 MDT_LH_CHILD, /* child lockh */
245 MDT_LH_OLD, /* old lockh for rename */
246 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
247 MDT_LH_NEW, /* new lockh for rename */
248 MDT_LH_RMT, /* used for return lh to caller */
257 struct mdt_reint_record {
258 mdt_reint_t rr_opcode;
259 const struct lustre_handle *rr_handle;
260 const struct lu_fid *rr_fid1;
261 const struct lu_fid *rr_fid2;
266 const void *rr_eadata;
269 const struct llog_cookie *rr_logcookies;
273 enum mdt_reint_flag {
274 MRF_OPEN_TRUNC = 1 << 0,
278 * Common data shared by mdt-level handlers. This is allocated per-thread to
279 * reduce stack consumption.
281 struct mdt_thread_info {
284 * The following members will be filled explicitly
285 * with specific data in mdt_thread_info_init().
287 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
288 * request handling may migrate from one server thread to another.
290 struct req_capsule *mti_pill;
292 /* although we have export in req, there are cases when it is not
293 * available, e.g. closing files upon export destroy */
294 struct obd_export *mti_exp;
296 * A couple of lock handles.
298 struct mdt_lock_handle mti_lh[MDT_LH_NR];
300 struct mdt_device *mti_mdt;
301 const struct lu_env *mti_env;
304 * Additional fail id that can be set by handler. Passed to
305 * target_send_reply().
309 /* transaction number of current request */
315 * The following members will be filled expilictly
316 * with zero in mdt_thread_info_init(). These members may be used
323 struct md_attr mti_attr;
325 * Body for "habeo corpus" operations.
327 const struct mdt_body *mti_body;
329 * Host object. This is released at the end of mdt_handler().
331 struct mdt_object *mti_object;
333 * Lock request for "habeo clavis" operations.
335 const struct ldlm_request *mti_dlm_req;
337 __u32 mti_has_trans:1, /* has txn already? */
340 /* opdata for mdt_reint_open(), has the same as
341 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
342 * value onto disk for recovery when mdt_trans_stop_cb() is called.
348 * The following members will be filled explicitly
349 * with zero in mdt_reint_unpack(), because they are only used
350 * by reint requests (including mdt_reint_open()).
354 * reint record. contains information for reint operations.
356 struct mdt_reint_record mti_rr;
358 /** md objects included in operation */
359 struct mdt_object *mti_mos;
360 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
362 * Operation specification (currently create and lookup)
364 struct md_op_spec mti_spec;
368 * The following members will _NOT_ be initialized at all.
369 * DO NOT expect them to contain any valid value.
370 * They should be initialized explicitly by the user themselves.
373 /* XXX: If something is in a union, make sure they do not conflict */
375 struct lu_fid mti_tmp_fid1;
376 struct lu_fid mti_tmp_fid2;
377 ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and
378 * mdt_rename_lock() */
379 struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and
382 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
383 char ns_name[48]; /* for mdt_init0() */
384 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
385 struct obd_statfs osfs; /* for mdt_statfs() */
387 /* for mdt_readpage() */
388 struct lu_rdpg mti_rdpg;
389 /* for mdt_sendpage() */
390 struct l_wait_info mti_wait_info;
394 struct md_som_data data;
398 /* IO epoch related stuff. */
399 struct mdt_ioepoch *mti_ioepoch;
400 __u64 mti_replayepoch;
403 struct lu_buf mti_buf;
404 struct lustre_capa_key mti_capa_key;
406 /* Ops object filename */
407 struct lu_name mti_name;
408 /* per-thread values, can be re-used */
411 /* big_lmm buffer was used and must be used in reply */
412 int mti_big_lmm_used;
413 /* should be enough to fit lustre_mdt_attrs */
414 char mti_xattr_buf[128];
417 /* ptlrpc request handler for MDT. All handlers are
418 * grouped into several slices - struct mdt_opc_slice,
419 * and stored in an array - mdt_handlers[].
422 /* The name of this handler. */
424 /* Fail id for this handler, checked at the beginning of this handler*/
426 /* Operation code for this handler */
428 /* flags are listed in enum mdt_handler_flags below. */
430 /* The actual handler function to execute. */
431 int (*mh_act)(struct mdt_thread_info *info);
432 /* Request format for this request. */
433 const struct req_format *mh_fmt;
436 enum mdt_handler_flags {
438 * struct mdt_body is passed in the incoming message, and object
439 * identified by this fid exists on disk.
441 * "habeo corpus" == "I have a body"
443 HABEO_CORPUS = (1 << 0),
445 * struct ldlm_request is passed in the incoming message.
447 * "habeo clavis" == "I have a key"
449 HABEO_CLAVIS = (1 << 1),
451 * this request has fixed reply format, so that reply message can be
452 * packed by generic code.
454 * "habeo refero" == "I have a reply"
456 HABEO_REFERO = (1 << 2),
458 * this request will modify something, so check whether the filesystem
459 * is readonly or not, then return -EROFS to client asap if necessary.
461 * "mutabor" == "I shall modify"
466 struct mdt_opc_slice {
469 struct mdt_handler *mos_hs;
472 static inline const struct md_device_operations *
473 mdt_child_ops(struct mdt_device * m)
475 LASSERT(m->mdt_child);
476 return m->mdt_child->md_ops;
479 static inline struct md_object *mdt_object_child(struct mdt_object *o)
482 return lu2md(lu_object_next(&o->mot_obj.mo_lu));
485 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
487 return info->mti_pill ? info->mti_pill->rc_req : NULL;
490 static inline int req_is_replay(struct ptlrpc_request *req)
492 LASSERT(req->rq_reqmsg);
493 return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY);
496 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
498 LASSERT(info->mti_exp);
499 return info->mti_exp->exp_connect_flags;
502 static inline void mdt_object_get(const struct lu_env *env,
503 struct mdt_object *o)
506 lu_object_get(&o->mot_obj.mo_lu);
510 static inline void mdt_object_put(const struct lu_env *env,
511 struct mdt_object *o)
514 lu_object_put(env, &o->mot_obj.mo_lu);
518 static inline int mdt_object_exists(const struct mdt_object *o)
520 return lu_object_exists(&o->mot_obj.mo_lu);
523 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
525 return lu_object_fid(&o->mot_obj.mo_lu);
528 static inline int mdt_object_obf(const struct mdt_object *o)
530 return lu_fid_eq(mdt_object_fid(o), &LU_OBF_FID);
533 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
535 return mdt->mdt_md_dev.md_lu_dev.ld_site;
538 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
540 return &mdt->mdt_seq_site;
543 static inline void mdt_export_evict(struct obd_export *exp)
545 class_fail_export(exp);
546 class_export_put(exp);
549 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
550 void mdt_set_disposition(struct mdt_thread_info *info,
551 struct ldlm_reply *rep, int flag);
552 void mdt_clear_disposition(struct mdt_thread_info *info,
553 struct ldlm_reply *rep, int flag);
555 void mdt_lock_pdo_init(struct mdt_lock_handle *lh,
556 ldlm_mode_t lm, const char *name,
559 void mdt_lock_reg_init(struct mdt_lock_handle *lh,
562 int mdt_lock_setup(struct mdt_thread_info *info,
563 struct mdt_object *o,
564 struct mdt_lock_handle *lh);
566 int mdt_object_lock(struct mdt_thread_info *,
568 struct mdt_lock_handle *,
571 int mdt_object_lock_try(struct mdt_thread_info *,
573 struct mdt_lock_handle *,
576 void mdt_object_unlock(struct mdt_thread_info *,
578 struct mdt_lock_handle *,
581 struct mdt_object *mdt_object_new(const struct lu_env *,
583 const struct lu_fid *);
584 struct mdt_object *mdt_object_find(const struct lu_env *,
586 const struct lu_fid *);
587 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
588 const struct lu_fid *,
589 struct mdt_lock_handle *,
591 void mdt_object_unlock_put(struct mdt_thread_info *,
593 struct mdt_lock_handle *,
596 void mdt_client_compatibility(struct mdt_thread_info *info);
598 int mdt_close_unpack(struct mdt_thread_info *info);
599 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
600 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
601 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
602 const struct lu_attr *attr, const struct lu_fid *fid);
604 int mdt_getxattr(struct mdt_thread_info *info);
605 int mdt_reint_setxattr(struct mdt_thread_info *info,
606 struct mdt_lock_handle *lh);
608 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
609 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
611 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
612 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
613 struct mdt_lock_handle *lhc);
615 extern void target_recovery_fini(struct obd_device *obd);
616 extern void target_recovery_init(struct lu_target *lut,
617 svc_handler_t handler);
618 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
619 struct obd_device *, struct lustre_sb_info *lsi);
620 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
622 int mdt_export_stats_init(struct obd_device *obd,
623 struct obd_export *exp,
626 int mdt_pin(struct mdt_thread_info* info);
628 int mdt_lock_new_child(struct mdt_thread_info *info,
629 struct mdt_object *o,
630 struct mdt_lock_handle *child_lockh);
632 void mdt_mfd_set_mode(struct mdt_file_data *mfd,
635 int mdt_reint_open(struct mdt_thread_info *info,
636 struct mdt_lock_handle *lhc);
638 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *,
639 const struct lustre_handle *);
642 MDT_IOEPOCH_CLOSED = 0,
643 MDT_IOEPOCH_OPENED = 1,
644 MDT_IOEPOCH_GETATTR = 2,
652 int mdt_attr_get_complex(struct mdt_thread_info *info,
653 struct mdt_object *o, struct md_attr *ma);
654 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
656 int mdt_object_is_som_enabled(struct mdt_object *mo);
657 int mdt_write_get(struct mdt_object *o);
658 void mdt_write_put(struct mdt_object *o);
659 int mdt_write_read(struct mdt_object *o);
660 struct mdt_file_data *mdt_mfd_new(void);
661 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
662 void mdt_mfd_free(struct mdt_file_data *mfd);
663 int mdt_close(struct mdt_thread_info *info);
664 int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
665 struct md_attr *ma, int flags);
666 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
668 int mdt_done_writing(struct mdt_thread_info *info);
669 int mdt_fix_reply(struct mdt_thread_info *info);
670 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
671 const struct md_attr *);
672 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
674 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
675 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
676 const void *area, ssize_t len);
678 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm);
680 int mdt_check_ucred(struct mdt_thread_info *);
681 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
682 int mdt_init_ucred_reint(struct mdt_thread_info *);
683 void mdt_exit_ucred(struct mdt_thread_info *);
684 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
685 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
686 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
688 int mdt_handle_common(struct ptlrpc_request *req,
689 struct mdt_opc_slice *supported);
690 int mdt_connect(struct mdt_thread_info *info);
691 int mdt_disconnect(struct mdt_thread_info *info);
692 int mdt_set_info(struct mdt_thread_info *info);
693 int mdt_get_info(struct mdt_thread_info *info);
694 int mdt_getstatus(struct mdt_thread_info *info);
695 int mdt_getattr(struct mdt_thread_info *info);
696 int mdt_getattr_name(struct mdt_thread_info *info);
697 int mdt_statfs(struct mdt_thread_info *info);
698 int mdt_reint(struct mdt_thread_info *info);
699 int mdt_sync(struct mdt_thread_info *info);
700 int mdt_is_subdir(struct mdt_thread_info *info);
701 int mdt_obd_ping(struct mdt_thread_info *info);
702 int mdt_obd_log_cancel(struct mdt_thread_info *info);
703 int mdt_obd_qc_callback(struct mdt_thread_info *info);
704 int mdt_enqueue(struct mdt_thread_info *info);
705 int mdt_convert(struct mdt_thread_info *info);
706 int mdt_bl_callback(struct mdt_thread_info *info);
707 int mdt_cp_callback(struct mdt_thread_info *info);
708 int mdt_llog_create(struct mdt_thread_info *info);
709 int mdt_llog_destroy(struct mdt_thread_info *info);
710 int mdt_llog_read_header(struct mdt_thread_info *info);
711 int mdt_llog_next_block(struct mdt_thread_info *info);
712 int mdt_llog_prev_block(struct mdt_thread_info *info);
713 int mdt_sec_ctx_handle(struct mdt_thread_info *info);
714 int mdt_readpage(struct mdt_thread_info *info);
715 int mdt_obd_idx_read(struct mdt_thread_info *info);
717 extern struct mdt_opc_slice mdt_regular_handlers[];
718 extern struct mdt_opc_slice mdt_seq_handlers[];
719 extern struct mdt_opc_slice mdt_fld_handlers[];
721 int mdt_quotacheck(struct mdt_thread_info *info);
722 int mdt_quotactl(struct mdt_thread_info *info);
723 int mdt_quota_dqacq(struct mdt_thread_info *info);
725 extern struct lprocfs_vars lprocfs_mds_module_vars[];
726 extern struct lprocfs_vars lprocfs_mds_obd_vars[];
728 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
732 int mdt_init_sec_level(struct mdt_thread_info *);
733 int mdt_init_idmap(struct mdt_thread_info *);
734 void mdt_cleanup_idmap(struct mdt_export_data *);
735 int mdt_handle_idmap(struct mdt_thread_info *);
736 int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *,
737 struct ptlrpc_user_desc *);
738 void mdt_body_reverse_idmap(struct mdt_thread_info *,
740 int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *,
741 struct mdt_remote_perm *);
742 int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32);
744 static inline struct mdt_device *mdt_dev(struct lu_device *d)
746 // LASSERT(lu_device_is_mdt(d));
747 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
750 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
752 struct lu_object *lo;
753 struct mdt_device *mdt = mdt_dev(mo->mot_obj.mo_lu.lo_dev);
755 lo = lu_object_locate(mo->mot_obj.mo_lu.lo_header,
756 mdt->mdt_bottom->dd_lu_dev.ld_type);
760 /* mdt/mdt_identity.c */
761 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
763 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
765 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
767 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
769 void mdt_flush_identity(struct upcall_cache *, int);
771 __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t);
773 int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *);
775 extern struct lu_context_key mdt_thread_key;
776 /* debug issues helper starts here*/
777 static inline int mdt_fail_write(const struct lu_env *env,
778 struct dt_device *dd, int id)
780 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
781 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
783 return dd->dd_ops->dt_ro(env, dd);
784 /* We set FAIL_ONCE because we never "un-fail" a device */
790 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
792 return &req->rq_export->exp_mdt_data;
795 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
796 struct mdt_lock_handle *lhc);
797 static inline int mdt_check_resent(struct mdt_thread_info *info,
798 mdt_reconstruct_t reconstruct,
799 struct mdt_lock_handle *lhc)
801 struct ptlrpc_request *req = mdt_info_req(info);
804 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
805 if (req_xid_is_last(req)) {
806 reconstruct(info, lhc);
809 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
810 req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
815 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
816 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
818 static inline int is_identity_get_disabled(struct upcall_cache *cache)
820 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
823 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
825 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
826 static inline int mdt_fid_lock(struct ldlm_namespace *ns,
827 struct lustre_handle *lh,
829 ldlm_policy_data_t *policy,
830 const struct ldlm_res_id *res_id,
831 __u64 flags, const __u64 *client_cookie)
838 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
839 mode, &flags, mdt_blocking_ast,
840 ldlm_completion_ast, NULL, NULL, 0,
841 LVB_T_NONE, client_cookie, lh);
842 return rc == ELDLM_OK ? 0 : -EIO;
845 static inline void mdt_fid_unlock(struct lustre_handle *lh,
848 ldlm_lock_decref(lh, mode);
851 extern mdl_mode_t mdt_mdl_lock_modes[];
852 extern ldlm_mode_t mdt_dlm_lock_modes[];
854 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode)
856 LASSERT(IS_PO2(mode));
857 return mdt_mdl_lock_modes[mode];
860 static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
862 LASSERT(IS_PO2(mode));
863 return mdt_dlm_lock_modes[mode];
867 extern struct ldlm_valblock_ops mdt_lvbo;
869 static inline struct lu_name *mdt_name(const struct lu_env *env,
870 char *name, int namelen)
872 struct lu_name *lname;
873 struct mdt_thread_info *mti;
875 LASSERT(namelen > 0);
876 /* trailing '\0' in buffer */
877 LASSERT(name[namelen] == '\0');
879 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
880 lname = &mti->mti_name;
881 lname->ln_name = name;
882 lname->ln_namelen = namelen;
886 static inline struct lu_name *mdt_name_copy(struct lu_name *tlname,
887 struct lu_name *slname)
892 tlname->ln_name = slname->ln_name;
893 tlname->ln_namelen = slname->ln_namelen;
897 void mdt_enable_cos(struct mdt_device *, int);
898 int mdt_cos_is_enabled(struct mdt_device *);
899 int mdt_hsm_copytool_send(struct obd_export *exp);
917 LPROC_MDT_SAMEDIR_RENAME,
918 LPROC_MDT_CROSSDIR_RENAME,
921 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
922 void mdt_stats_counter_init(struct lprocfs_stats *stats);
923 void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars);
924 void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars);
925 int mdt_procfs_init(struct mdt_device *mdt, const char *name);
926 int mdt_procfs_fini(struct mdt_device *mdt);
927 void mdt_rename_counter_tally(struct mdt_thread_info *info,
928 struct mdt_device *mdt,
929 struct ptlrpc_request *req,
930 struct mdt_object *src, struct mdt_object *tgt);
933 int mdt_ck_thread_start(struct mdt_device *mdt);
934 void mdt_ck_thread_stop(struct mdt_device *mdt);
935 void mdt_ck_timer_callback(unsigned long castmeharder);
936 int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt);
938 static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset,
939 const struct lu_fid *fid,
940 struct lustre_capa *capa)
942 struct md_capainfo *ci;
944 LASSERT(offset >= 0 && offset < MD_CAPAINFO_MAX);
945 if (!info->mti_mdt->mdt_opts.mo_mds_capa ||
946 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA))
949 ci = md_capainfo(info->mti_env);
951 ci->mc_fid[offset] = *fid;
952 ci->mc_capa[offset] = capa;
955 static inline void mdt_dump_capainfo(struct mdt_thread_info *info)
957 struct md_capainfo *ci = md_capainfo(info->mti_env);
962 for (i = 0; i < MD_CAPAINFO_MAX; i++) {
963 if (!ci->mc_capa[i]) {
964 CERROR("no capa for index %d "DFID"\n",
965 i, PFID(&ci->mc_fid[i]));
968 if (ci->mc_capa[i] == BYPASS_CAPA) {
969 CERROR("bypass for index %d "DFID"\n",
970 i, PFID(&ci->mc_fid[i]));
973 DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i);
977 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
979 return mdt->mdt_md_dev.md_lu_dev.ld_obd;
982 extern const struct lu_device_operations mdt_lu_ops;
984 static inline int lu_device_is_mdt(struct lu_device *d)
986 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
989 static inline struct mdt_device *lu2mdt_dev(struct lu_device *d)
991 LASSERTF(lu_device_is_mdt(d), "It is %s instead of MDT %p %p\n",
992 d->ld_type->ldt_name, d->ld_ops, &mdt_lu_ops);
993 return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev);
996 static inline char *mdt_obd_name(struct mdt_device *mdt)
998 return mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name;
1001 int mds_mod_init(void);
1002 void mds_mod_exit(void);
1004 #endif /* __KERNEL__ */