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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/obd_config.c
41 #define DEBUG_SUBSYSTEM S_CLASS
42 #include "../include/obd_class.h"
43 #include <linux/string.h>
44 #include "../include/lustre_log.h"
45 #include "../include/lprocfs_status.h"
46 #include "../include/lustre_param.h"
48 #include "llog_internal.h"
50 static cfs_hash_ops_t uuid_hash_ops
;
51 static cfs_hash_ops_t nid_hash_ops
;
52 static cfs_hash_ops_t nid_stat_hash_ops
;
54 /*********** string parsing utils *********/
56 /* returns 0 if we find this key in the buffer, else 1 */
57 int class_find_param(char *buf
, char *key
, char **valp
)
64 ptr
= strstr(buf
, key
);
69 *valp
= ptr
+ strlen(key
);
73 EXPORT_SYMBOL(class_find_param
);
76 * Check whether the proc parameter \a param is an old parameter or not from
77 * the array \a ptr which contains the mapping from old parameters to new ones.
78 * If it's an old one, then return the pointer to the cfg_interop_param struc-
79 * ture which contains both the old and new parameters.
81 * \param param proc parameter
82 * \param ptr an array which contains the mapping from
83 * old parameters to new ones
85 * \retval valid-pointer pointer to the cfg_interop_param structure
86 * which contains the old and new parameters
87 * \retval NULL \a param or \a ptr is NULL,
88 * or \a param is not an old parameter
90 struct cfg_interop_param
*class_find_old_param(const char *param
,
91 struct cfg_interop_param
*ptr
)
96 if (param
== NULL
|| ptr
== NULL
)
99 value
= strchr(param
, '=');
101 name_len
= strlen(param
);
103 name_len
= value
- param
;
105 while (ptr
->old_param
!= NULL
) {
106 if (strncmp(param
, ptr
->old_param
, name_len
) == 0 &&
107 name_len
== strlen(ptr
->old_param
))
114 EXPORT_SYMBOL(class_find_old_param
);
117 * Finds a parameter in \a params and copies it to \a copy.
119 * Leading spaces are skipped. Next space or end of string is the
120 * parameter terminator with the exception that spaces inside single or double
121 * quotes get included into a parameter. The parameter is copied into \a copy
122 * which has to be allocated big enough by a caller, quotes are stripped in
123 * the copy and the copy is terminated by 0.
125 * On return \a params is set to next parameter or to NULL if last
126 * parameter is returned.
128 * \retval 0 if parameter is returned in \a copy
129 * \retval 1 otherwise
130 * \retval -EINVAL if unbalanced quota is found
132 int class_get_next_param(char **params
, char *copy
)
147 q1
= strpbrk(str
, " '\"");
150 memcpy(copy
, str
, len
);
157 memcpy(copy
, str
, len
);
163 memcpy(copy
, str
, len
);
166 /* search for the matching closing quote */
168 q2
= strchr(str
, *q1
);
170 CERROR("Unbalanced quota in parameters: \"%s\"\n",
175 memcpy(copy
, str
, len
);
181 EXPORT_SYMBOL(class_get_next_param
);
183 /* returns 0 if this is the first key in the buffer, else 1.
184 valp points to first char after key. */
185 int class_match_param(char *buf
, char *key
, char **valp
)
190 if (memcmp(buf
, key
, strlen(key
)) != 0)
194 *valp
= buf
+ strlen(key
);
198 EXPORT_SYMBOL(class_match_param
);
200 static int parse_nid(char *buf
, void *value
, int quiet
)
202 lnet_nid_t
*nid
= (lnet_nid_t
*)value
;
204 *nid
= libcfs_str2nid(buf
);
205 if (*nid
!= LNET_NID_ANY
)
209 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf
);
213 static int parse_net(char *buf
, void *value
)
215 __u32
*net
= (__u32
*)value
;
217 *net
= libcfs_str2net(buf
);
218 CDEBUG(D_INFO
, "Net %s\n", libcfs_net2str(*net
));
230 endh is set to next separator */
231 static int class_parse_value(char *buf
, int opc
, void *value
, char **endh
,
240 while (*buf
== ',' || *buf
== ':')
242 if (*buf
== ' ' || *buf
== '/' || *buf
== '\0')
245 /* nid separators or end of nids */
246 endp
= strpbrk(buf
, ",: /");
248 endp
= buf
+ strlen(buf
);
255 case CLASS_PARSE_NID
:
256 rc
= parse_nid(buf
, value
, quiet
);
258 case CLASS_PARSE_NET
:
259 rc
= parse_net(buf
, value
);
270 int class_parse_nid(char *buf
, lnet_nid_t
*nid
, char **endh
)
272 return class_parse_value(buf
, CLASS_PARSE_NID
, (void *)nid
, endh
, 0);
274 EXPORT_SYMBOL(class_parse_nid
);
276 int class_parse_nid_quiet(char *buf
, lnet_nid_t
*nid
, char **endh
)
278 return class_parse_value(buf
, CLASS_PARSE_NID
, (void *)nid
, endh
, 1);
280 EXPORT_SYMBOL(class_parse_nid_quiet
);
282 int class_parse_net(char *buf
, __u32
*net
, char **endh
)
284 return class_parse_value(buf
, CLASS_PARSE_NET
, (void *)net
, endh
, 0);
286 EXPORT_SYMBOL(class_parse_net
);
288 /* 1 param contains key and match
289 * 0 param contains key and not match
290 * -1 param does not contain key
292 int class_match_nid(char *buf
, char *key
, lnet_nid_t nid
)
297 while (class_find_param(buf
, key
, &buf
) == 0) {
298 /* please restrict to the nids pertaining to
299 * the specified nids */
300 while (class_parse_nid(buf
, &tmp
, &buf
) == 0) {
308 EXPORT_SYMBOL(class_match_nid
);
310 int class_match_net(char *buf
, char *key
, __u32 net
)
315 while (class_find_param(buf
, key
, &buf
) == 0) {
316 /* please restrict to the nids pertaining to
317 * the specified networks */
318 while (class_parse_net(buf
, &tmp
, &buf
) == 0) {
326 EXPORT_SYMBOL(class_match_net
);
328 /********************** class fns **********************/
331 * Create a new obd device and set the type, name and uuid. If successful,
332 * the new device can be accessed by either name or uuid.
334 int class_attach(struct lustre_cfg
*lcfg
)
336 struct obd_device
*obd
= NULL
;
337 char *typename
, *name
, *uuid
;
340 if (!LUSTRE_CFG_BUFLEN(lcfg
, 1)) {
341 CERROR("No type passed!\n");
344 typename
= lustre_cfg_string(lcfg
, 1);
346 if (!LUSTRE_CFG_BUFLEN(lcfg
, 0)) {
347 CERROR("No name passed!\n");
350 name
= lustre_cfg_string(lcfg
, 0);
352 if (!LUSTRE_CFG_BUFLEN(lcfg
, 2)) {
353 CERROR("No UUID passed!\n");
356 uuid
= lustre_cfg_string(lcfg
, 2);
358 CDEBUG(D_IOCTL
, "attach type %s name: %s uuid: %s\n",
359 MKSTR(typename
), MKSTR(name
), MKSTR(uuid
));
361 obd
= class_newdev(typename
, name
);
363 /* Already exists or out of obds */
366 CERROR("Cannot create device %s of type %s : %d\n",
370 LASSERTF(obd
!= NULL
, "Cannot get obd device %s of type %s\n",
372 LASSERTF(obd
->obd_magic
== OBD_DEVICE_MAGIC
,
373 "obd %p obd_magic %08X != %08X\n",
374 obd
, obd
->obd_magic
, OBD_DEVICE_MAGIC
);
375 LASSERTF(strncmp(obd
->obd_name
, name
, strlen(name
)) == 0,
376 "%p obd_name %s != %s\n", obd
, obd
->obd_name
, name
);
378 rwlock_init(&obd
->obd_pool_lock
);
379 obd
->obd_pool_limit
= 0;
380 obd
->obd_pool_slv
= 0;
382 INIT_LIST_HEAD(&obd
->obd_exports
);
383 INIT_LIST_HEAD(&obd
->obd_unlinked_exports
);
384 INIT_LIST_HEAD(&obd
->obd_delayed_exports
);
385 INIT_LIST_HEAD(&obd
->obd_exports_timed
);
386 INIT_LIST_HEAD(&obd
->obd_nid_stats
);
387 spin_lock_init(&obd
->obd_nid_lock
);
388 spin_lock_init(&obd
->obd_dev_lock
);
389 mutex_init(&obd
->obd_dev_mutex
);
390 spin_lock_init(&obd
->obd_osfs_lock
);
391 /* obd->obd_osfs_age must be set to a value in the distant
392 * past to guarantee a fresh statfs is fetched on mount. */
393 obd
->obd_osfs_age
= cfs_time_shift_64(-1000);
395 /* XXX belongs in setup not attach */
396 init_rwsem(&obd
->obd_observer_link_sem
);
398 cfs_init_timer(&obd
->obd_recovery_timer
);
399 spin_lock_init(&obd
->obd_recovery_task_lock
);
400 init_waitqueue_head(&obd
->obd_next_transno_waitq
);
401 init_waitqueue_head(&obd
->obd_evict_inprogress_waitq
);
402 INIT_LIST_HEAD(&obd
->obd_req_replay_queue
);
403 INIT_LIST_HEAD(&obd
->obd_lock_replay_queue
);
404 INIT_LIST_HEAD(&obd
->obd_final_req_queue
);
405 INIT_LIST_HEAD(&obd
->obd_evict_list
);
407 llog_group_init(&obd
->obd_olg
, FID_SEQ_LLOG
);
409 obd
->obd_conn_inprogress
= 0;
412 if (len
>= sizeof(obd
->obd_uuid
)) {
413 CERROR("uuid must be < %d bytes long\n",
414 (int)sizeof(obd
->obd_uuid
));
418 memcpy(obd
->obd_uuid
.uuid
, uuid
, len
);
421 if (OBP(obd
, attach
)) {
422 rc
= OBP(obd
, attach
)(obd
, sizeof(*lcfg
), lcfg
);
429 /* Detach drops this */
430 spin_lock(&obd
->obd_dev_lock
);
431 atomic_set(&obd
->obd_refcount
, 1);
432 spin_unlock(&obd
->obd_dev_lock
);
433 lu_ref_init(&obd
->obd_reference
);
434 lu_ref_add(&obd
->obd_reference
, "attach", obd
);
436 obd
->obd_attached
= 1;
437 CDEBUG(D_IOCTL
, "OBD: dev %d attached type %s with refcount %d\n",
438 obd
->obd_minor
, typename
, atomic_read(&obd
->obd_refcount
));
442 class_release_dev(obd
);
446 EXPORT_SYMBOL(class_attach
);
448 /** Create hashes, self-export, and call type-specific setup.
449 * Setup is effectively the "start this obd" call.
451 int class_setup(struct obd_device
*obd
, struct lustre_cfg
*lcfg
)
454 struct obd_export
*exp
;
456 LASSERT(obd
!= NULL
);
457 LASSERTF(obd
== class_num2obd(obd
->obd_minor
),
458 "obd %p != obd_devs[%d] %p\n",
459 obd
, obd
->obd_minor
, class_num2obd(obd
->obd_minor
));
460 LASSERTF(obd
->obd_magic
== OBD_DEVICE_MAGIC
,
461 "obd %p obd_magic %08x != %08x\n",
462 obd
, obd
->obd_magic
, OBD_DEVICE_MAGIC
);
464 /* have we attached a type to this device? */
465 if (!obd
->obd_attached
) {
466 CERROR("Device %d not attached\n", obd
->obd_minor
);
470 if (obd
->obd_set_up
) {
471 CERROR("Device %d already setup (type %s)\n",
472 obd
->obd_minor
, obd
->obd_type
->typ_name
);
476 /* is someone else setting us up right now? (attach inits spinlock) */
477 spin_lock(&obd
->obd_dev_lock
);
478 if (obd
->obd_starting
) {
479 spin_unlock(&obd
->obd_dev_lock
);
480 CERROR("Device %d setup in progress (type %s)\n",
481 obd
->obd_minor
, obd
->obd_type
->typ_name
);
484 /* just leave this on forever. I can't use obd_set_up here because
485 other fns check that status, and we're not actually set up yet. */
486 obd
->obd_starting
= 1;
487 obd
->obd_uuid_hash
= NULL
;
488 obd
->obd_nid_hash
= NULL
;
489 obd
->obd_nid_stats_hash
= NULL
;
490 spin_unlock(&obd
->obd_dev_lock
);
492 /* create an uuid-export lustre hash */
493 obd
->obd_uuid_hash
= cfs_hash_create("UUID_HASH",
496 HASH_UUID_BKT_BITS
, 0,
499 &uuid_hash_ops
, CFS_HASH_DEFAULT
);
500 if (!obd
->obd_uuid_hash
) {
505 /* create a nid-export lustre hash */
506 obd
->obd_nid_hash
= cfs_hash_create("NID_HASH",
509 HASH_NID_BKT_BITS
, 0,
512 &nid_hash_ops
, CFS_HASH_DEFAULT
);
513 if (!obd
->obd_nid_hash
) {
518 /* create a nid-stats lustre hash */
519 obd
->obd_nid_stats_hash
= cfs_hash_create("NID_STATS",
520 HASH_NID_STATS_CUR_BITS
,
521 HASH_NID_STATS_MAX_BITS
,
522 HASH_NID_STATS_BKT_BITS
, 0,
525 &nid_stat_hash_ops
, CFS_HASH_DEFAULT
);
526 if (!obd
->obd_nid_stats_hash
) {
531 exp
= class_new_export(obd
, &obd
->obd_uuid
);
537 obd
->obd_self_export
= exp
;
538 list_del_init(&exp
->exp_obd_chain_timed
);
539 class_export_put(exp
);
541 err
= obd_setup(obd
, lcfg
);
547 spin_lock(&obd
->obd_dev_lock
);
548 /* cleanup drops this */
549 class_incref(obd
, "setup", obd
);
550 spin_unlock(&obd
->obd_dev_lock
);
552 CDEBUG(D_IOCTL
, "finished setup of obd %s (uuid %s)\n",
553 obd
->obd_name
, obd
->obd_uuid
.uuid
);
557 if (obd
->obd_self_export
) {
558 class_unlink_export(obd
->obd_self_export
);
559 obd
->obd_self_export
= NULL
;
562 if (obd
->obd_uuid_hash
) {
563 cfs_hash_putref(obd
->obd_uuid_hash
);
564 obd
->obd_uuid_hash
= NULL
;
566 if (obd
->obd_nid_hash
) {
567 cfs_hash_putref(obd
->obd_nid_hash
);
568 obd
->obd_nid_hash
= NULL
;
570 if (obd
->obd_nid_stats_hash
) {
571 cfs_hash_putref(obd
->obd_nid_stats_hash
);
572 obd
->obd_nid_stats_hash
= NULL
;
574 obd
->obd_starting
= 0;
575 CERROR("setup %s failed (%d)\n", obd
->obd_name
, err
);
578 EXPORT_SYMBOL(class_setup
);
580 /** We have finished using this obd and are ready to destroy it.
581 * There can be no more references to this obd.
583 int class_detach(struct obd_device
*obd
, struct lustre_cfg
*lcfg
)
585 if (obd
->obd_set_up
) {
586 CERROR("OBD device %d still set up\n", obd
->obd_minor
);
590 spin_lock(&obd
->obd_dev_lock
);
591 if (!obd
->obd_attached
) {
592 spin_unlock(&obd
->obd_dev_lock
);
593 CERROR("OBD device %d not attached\n", obd
->obd_minor
);
596 obd
->obd_attached
= 0;
597 spin_unlock(&obd
->obd_dev_lock
);
599 CDEBUG(D_IOCTL
, "detach on obd %s (uuid %s)\n",
600 obd
->obd_name
, obd
->obd_uuid
.uuid
);
602 class_decref(obd
, "attach", obd
);
605 EXPORT_SYMBOL(class_detach
);
607 /** Start shutting down the obd. There may be in-progress ops when
608 * this is called. We tell them to start shutting down with a call
609 * to class_disconnect_exports().
611 int class_cleanup(struct obd_device
*obd
, struct lustre_cfg
*lcfg
)
616 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS
);
618 if (!obd
->obd_set_up
) {
619 CERROR("Device %d not setup\n", obd
->obd_minor
);
623 spin_lock(&obd
->obd_dev_lock
);
624 if (obd
->obd_stopping
) {
625 spin_unlock(&obd
->obd_dev_lock
);
626 CERROR("OBD %d already stopping\n", obd
->obd_minor
);
629 /* Leave this on forever */
630 obd
->obd_stopping
= 1;
632 /* wait for already-arrived-connections to finish. */
633 while (obd
->obd_conn_inprogress
> 0) {
634 spin_unlock(&obd
->obd_dev_lock
);
638 spin_lock(&obd
->obd_dev_lock
);
640 spin_unlock(&obd
->obd_dev_lock
);
642 if (lcfg
->lcfg_bufcount
>= 2 && LUSTRE_CFG_BUFLEN(lcfg
, 1) > 0) {
643 for (flag
= lustre_cfg_string(lcfg
, 1); *flag
!= 0; flag
++)
649 LCONSOLE_WARN("Failing over %s\n",
652 obd
->obd_no_transno
= 1;
653 obd
->obd_no_recov
= 1;
654 if (OBP(obd
, iocontrol
)) {
655 obd_iocontrol(OBD_IOC_SYNC
,
656 obd
->obd_self_export
,
661 CERROR("Unrecognised flag '%c'\n", *flag
);
665 LASSERT(obd
->obd_self_export
);
667 /* The three references that should be remaining are the
668 * obd_self_export and the attach and setup references. */
669 if (atomic_read(&obd
->obd_refcount
) > 3) {
670 /* refcount - 3 might be the number of real exports
671 (excluding self export). But class_incref is called
672 by other things as well, so don't count on it. */
673 CDEBUG(D_IOCTL
, "%s: forcing exports to disconnect: %d\n",
674 obd
->obd_name
, atomic_read(&obd
->obd_refcount
) - 3);
675 dump_exports(obd
, 0);
676 class_disconnect_exports(obd
);
679 /* Precleanup, we must make sure all exports get destroyed. */
680 err
= obd_precleanup(obd
, OBD_CLEANUP_EXPORTS
);
682 CERROR("Precleanup %s returned %d\n",
685 /* destroy an uuid-export hash body */
686 if (obd
->obd_uuid_hash
) {
687 cfs_hash_putref(obd
->obd_uuid_hash
);
688 obd
->obd_uuid_hash
= NULL
;
691 /* destroy a nid-export hash body */
692 if (obd
->obd_nid_hash
) {
693 cfs_hash_putref(obd
->obd_nid_hash
);
694 obd
->obd_nid_hash
= NULL
;
697 /* destroy a nid-stats hash body */
698 if (obd
->obd_nid_stats_hash
) {
699 cfs_hash_putref(obd
->obd_nid_stats_hash
);
700 obd
->obd_nid_stats_hash
= NULL
;
703 class_decref(obd
, "setup", obd
);
708 EXPORT_SYMBOL(class_cleanup
);
710 struct obd_device
*class_incref(struct obd_device
*obd
,
711 const char *scope
, const void *source
)
713 lu_ref_add_atomic(&obd
->obd_reference
, scope
, source
);
714 atomic_inc(&obd
->obd_refcount
);
715 CDEBUG(D_INFO
, "incref %s (%p) now %d\n", obd
->obd_name
, obd
,
716 atomic_read(&obd
->obd_refcount
));
720 EXPORT_SYMBOL(class_incref
);
722 void class_decref(struct obd_device
*obd
, const char *scope
, const void *source
)
727 spin_lock(&obd
->obd_dev_lock
);
728 atomic_dec(&obd
->obd_refcount
);
729 refs
= atomic_read(&obd
->obd_refcount
);
730 spin_unlock(&obd
->obd_dev_lock
);
731 lu_ref_del(&obd
->obd_reference
, scope
, source
);
733 CDEBUG(D_INFO
, "Decref %s (%p) now %d\n", obd
->obd_name
, obd
, refs
);
735 if ((refs
== 1) && obd
->obd_stopping
) {
736 /* All exports have been destroyed; there should
737 be no more in-progress ops by this point.*/
739 spin_lock(&obd
->obd_self_export
->exp_lock
);
740 obd
->obd_self_export
->exp_flags
|= exp_flags_from_obd(obd
);
741 spin_unlock(&obd
->obd_self_export
->exp_lock
);
743 /* note that we'll recurse into class_decref again */
744 class_unlink_export(obd
->obd_self_export
);
749 CDEBUG(D_CONFIG
, "finishing cleanup of obd %s (%s)\n",
750 obd
->obd_name
, obd
->obd_uuid
.uuid
);
751 LASSERT(!obd
->obd_attached
);
752 if (obd
->obd_stopping
) {
753 /* If we're not stopping, we were never set up */
754 err
= obd_cleanup(obd
);
756 CERROR("Cleanup %s returned %d\n",
759 if (OBP(obd
, detach
)) {
760 err
= OBP(obd
, detach
)(obd
);
762 CERROR("Detach returned %d\n", err
);
764 class_release_dev(obd
);
767 EXPORT_SYMBOL(class_decref
);
769 /** Add a failover nid location.
770 * Client obd types contact server obd types using this nid list.
772 int class_add_conn(struct obd_device
*obd
, struct lustre_cfg
*lcfg
)
774 struct obd_import
*imp
;
775 struct obd_uuid uuid
;
778 if (LUSTRE_CFG_BUFLEN(lcfg
, 1) < 1 ||
779 LUSTRE_CFG_BUFLEN(lcfg
, 1) > sizeof(struct obd_uuid
)) {
780 CERROR("invalid conn_uuid\n");
783 if (strcmp(obd
->obd_type
->typ_name
, LUSTRE_MDC_NAME
) &&
784 strcmp(obd
->obd_type
->typ_name
, LUSTRE_OSC_NAME
) &&
785 strcmp(obd
->obd_type
->typ_name
, LUSTRE_OSP_NAME
) &&
786 strcmp(obd
->obd_type
->typ_name
, LUSTRE_LWP_NAME
) &&
787 strcmp(obd
->obd_type
->typ_name
, LUSTRE_MGC_NAME
)) {
788 CERROR("can't add connection on non-client dev\n");
792 imp
= obd
->u
.cli
.cl_import
;
794 CERROR("try to add conn on immature client dev\n");
798 obd_str2uuid(&uuid
, lustre_cfg_string(lcfg
, 1));
799 rc
= obd_add_conn(imp
, &uuid
, lcfg
->lcfg_num
);
803 EXPORT_SYMBOL(class_add_conn
);
805 /** Remove a failover nid location.
807 int class_del_conn(struct obd_device
*obd
, struct lustre_cfg
*lcfg
)
809 struct obd_import
*imp
;
810 struct obd_uuid uuid
;
813 if (LUSTRE_CFG_BUFLEN(lcfg
, 1) < 1 ||
814 LUSTRE_CFG_BUFLEN(lcfg
, 1) > sizeof(struct obd_uuid
)) {
815 CERROR("invalid conn_uuid\n");
818 if (strcmp(obd
->obd_type
->typ_name
, LUSTRE_MDC_NAME
) &&
819 strcmp(obd
->obd_type
->typ_name
, LUSTRE_OSC_NAME
)) {
820 CERROR("can't del connection on non-client dev\n");
824 imp
= obd
->u
.cli
.cl_import
;
826 CERROR("try to del conn on immature client dev\n");
830 obd_str2uuid(&uuid
, lustre_cfg_string(lcfg
, 1));
831 rc
= obd_del_conn(imp
, &uuid
);
836 LIST_HEAD(lustre_profile_list
);
838 struct lustre_profile
*class_get_profile(const char * prof
)
840 struct lustre_profile
*lprof
;
842 list_for_each_entry(lprof
, &lustre_profile_list
, lp_list
) {
843 if (!strcmp(lprof
->lp_profile
, prof
)) {
849 EXPORT_SYMBOL(class_get_profile
);
851 /** Create a named "profile".
852 * This defines the mdc and osc names to use for a client.
853 * This also is used to define the lov to be used by a mdt.
855 int class_add_profile(int proflen
, char *prof
, int osclen
, char *osc
,
856 int mdclen
, char *mdc
)
858 struct lustre_profile
*lprof
;
861 CDEBUG(D_CONFIG
, "Add profile %s\n", prof
);
863 OBD_ALLOC(lprof
, sizeof(*lprof
));
866 INIT_LIST_HEAD(&lprof
->lp_list
);
868 LASSERT(proflen
== (strlen(prof
) + 1));
869 OBD_ALLOC(lprof
->lp_profile
, proflen
);
870 if (lprof
->lp_profile
== NULL
) {
874 memcpy(lprof
->lp_profile
, prof
, proflen
);
876 LASSERT(osclen
== (strlen(osc
) + 1));
877 OBD_ALLOC(lprof
->lp_dt
, osclen
);
878 if (lprof
->lp_dt
== NULL
) {
882 memcpy(lprof
->lp_dt
, osc
, osclen
);
885 LASSERT(mdclen
== (strlen(mdc
) + 1));
886 OBD_ALLOC(lprof
->lp_md
, mdclen
);
887 if (lprof
->lp_md
== NULL
) {
891 memcpy(lprof
->lp_md
, mdc
, mdclen
);
894 list_add(&lprof
->lp_list
, &lustre_profile_list
);
899 OBD_FREE(lprof
->lp_md
, mdclen
);
901 OBD_FREE(lprof
->lp_dt
, osclen
);
902 if (lprof
->lp_profile
)
903 OBD_FREE(lprof
->lp_profile
, proflen
);
904 OBD_FREE(lprof
, sizeof(*lprof
));
908 void class_del_profile(const char *prof
)
910 struct lustre_profile
*lprof
;
912 CDEBUG(D_CONFIG
, "Del profile %s\n", prof
);
914 lprof
= class_get_profile(prof
);
916 list_del(&lprof
->lp_list
);
917 OBD_FREE(lprof
->lp_profile
, strlen(lprof
->lp_profile
) + 1);
918 OBD_FREE(lprof
->lp_dt
, strlen(lprof
->lp_dt
) + 1);
920 OBD_FREE(lprof
->lp_md
, strlen(lprof
->lp_md
) + 1);
921 OBD_FREE(lprof
, sizeof(*lprof
));
924 EXPORT_SYMBOL(class_del_profile
);
927 void class_del_profiles(void)
929 struct lustre_profile
*lprof
, *n
;
931 list_for_each_entry_safe(lprof
, n
, &lustre_profile_list
, lp_list
) {
932 list_del(&lprof
->lp_list
);
933 OBD_FREE(lprof
->lp_profile
, strlen(lprof
->lp_profile
) + 1);
934 OBD_FREE(lprof
->lp_dt
, strlen(lprof
->lp_dt
) + 1);
936 OBD_FREE(lprof
->lp_md
, strlen(lprof
->lp_md
) + 1);
937 OBD_FREE(lprof
, sizeof(*lprof
));
940 EXPORT_SYMBOL(class_del_profiles
);
942 static int class_set_global(char *ptr
, int val
, struct lustre_cfg
*lcfg
)
944 if (class_match_param(ptr
, PARAM_AT_MIN
, NULL
) == 0)
946 else if (class_match_param(ptr
, PARAM_AT_MAX
, NULL
) == 0)
948 else if (class_match_param(ptr
, PARAM_AT_EXTRA
, NULL
) == 0)
950 else if (class_match_param(ptr
, PARAM_AT_EARLY_MARGIN
, NULL
) == 0)
951 at_early_margin
= val
;
952 else if (class_match_param(ptr
, PARAM_AT_HISTORY
, NULL
) == 0)
954 else if (class_match_param(ptr
, PARAM_JOBID_VAR
, NULL
) == 0)
955 strlcpy(obd_jobid_var
, lustre_cfg_string(lcfg
, 2),
956 JOBSTATS_JOBID_VAR_MAX_LEN
+ 1);
960 CDEBUG(D_IOCTL
, "global %s = %d\n", ptr
, val
);
965 /* We can't call ll_process_config or lquota_process_config directly because
966 * it lives in a module that must be loaded after this one. */
967 static int (*client_process_config
)(struct lustre_cfg
*lcfg
) = NULL
;
968 static int (*quota_process_config
)(struct lustre_cfg
*lcfg
) = NULL
;
970 void lustre_register_client_process_config(int (*cpc
)(struct lustre_cfg
*lcfg
))
972 client_process_config
= cpc
;
974 EXPORT_SYMBOL(lustre_register_client_process_config
);
977 * Rename the proc parameter in \a cfg with a new name \a new_name.
979 * \param cfg config structure which contains the proc parameter
980 * \param new_name new name of the proc parameter
982 * \retval valid-pointer pointer to the newly-allocated config structure
983 * which contains the renamed proc parameter
984 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
985 * not contain a proc parameter
986 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
988 struct lustre_cfg
*lustre_cfg_rename(struct lustre_cfg
*cfg
,
989 const char *new_name
)
991 struct lustre_cfg_bufs
*bufs
= NULL
;
992 struct lustre_cfg
*new_cfg
= NULL
;
994 char *new_param
= NULL
;
999 if (cfg
== NULL
|| new_name
== NULL
)
1000 return ERR_PTR(-EINVAL
);
1002 param
= lustre_cfg_string(cfg
, 1);
1004 return ERR_PTR(-EINVAL
);
1006 value
= strchr(param
, '=');
1008 name_len
= strlen(param
);
1010 name_len
= value
- param
;
1012 new_len
= LUSTRE_CFG_BUFLEN(cfg
, 1) + strlen(new_name
) - name_len
;
1014 OBD_ALLOC(new_param
, new_len
);
1015 if (new_param
== NULL
)
1016 return ERR_PTR(-ENOMEM
);
1018 strcpy(new_param
, new_name
);
1020 strcat(new_param
, value
);
1022 OBD_ALLOC_PTR(bufs
);
1024 OBD_FREE(new_param
, new_len
);
1025 return ERR_PTR(-ENOMEM
);
1028 lustre_cfg_bufs_reset(bufs
, NULL
);
1029 lustre_cfg_bufs_init(bufs
, cfg
);
1030 lustre_cfg_bufs_set_string(bufs
, 1, new_param
);
1032 new_cfg
= lustre_cfg_new(cfg
->lcfg_command
, bufs
);
1034 OBD_FREE(new_param
, new_len
);
1036 if (new_cfg
== NULL
)
1037 return ERR_PTR(-ENOMEM
);
1039 new_cfg
->lcfg_num
= cfg
->lcfg_num
;
1040 new_cfg
->lcfg_flags
= cfg
->lcfg_flags
;
1041 new_cfg
->lcfg_nid
= cfg
->lcfg_nid
;
1042 new_cfg
->lcfg_nal
= cfg
->lcfg_nal
;
1046 EXPORT_SYMBOL(lustre_cfg_rename
);
1048 static int process_param2_config(struct lustre_cfg
*lcfg
)
1050 char *param
= lustre_cfg_string(lcfg
, 1);
1051 char *upcall
= lustre_cfg_string(lcfg
, 2);
1053 [0] = "/usr/sbin/lctl",
1058 struct timeval start
;
1063 /* Add upcall processing here. Now only lctl is supported */
1064 if (strcmp(upcall
, LCTL_UPCALL
) != 0) {
1065 CERROR("Unsupported upcall %s\n", upcall
);
1069 do_gettimeofday(&start
);
1070 rc
= USERMODEHELPER(argv
[0], argv
, NULL
);
1071 do_gettimeofday(&end
);
1075 "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n",
1076 argv
[0], argv
[1], argv
[2], rc
,
1077 cfs_timeval_sub(&end
, &start
, NULL
));
1079 CDEBUG(D_HA
, "lctl: invoked upcall %s %s %s, time %ldus\n",
1080 argv
[0], argv
[1], argv
[2],
1081 cfs_timeval_sub(&end
, &start
, NULL
));
1088 void lustre_register_quota_process_config(int (*qpc
)(struct lustre_cfg
*lcfg
))
1090 quota_process_config
= qpc
;
1092 EXPORT_SYMBOL(lustre_register_quota_process_config
);
1094 /** Process configuration commands given in lustre_cfg form.
1095 * These may come from direct calls (e.g. class_manual_cleanup)
1096 * or processing the config llog, or ioctl from lctl.
1098 int class_process_config(struct lustre_cfg
*lcfg
)
1100 struct obd_device
*obd
;
1103 LASSERT(lcfg
&& !IS_ERR(lcfg
));
1104 CDEBUG(D_IOCTL
, "processing cmd: %x\n", lcfg
->lcfg_command
);
1106 /* Commands that don't need a device */
1107 switch (lcfg
->lcfg_command
) {
1109 err
= class_attach(lcfg
);
1112 case LCFG_ADD_UUID
: {
1113 CDEBUG(D_IOCTL
, "adding mapping from uuid %s to nid %#llx (%s)\n",
1114 lustre_cfg_string(lcfg
, 1), lcfg
->lcfg_nid
,
1115 libcfs_nid2str(lcfg
->lcfg_nid
));
1117 err
= class_add_uuid(lustre_cfg_string(lcfg
, 1), lcfg
->lcfg_nid
);
1120 case LCFG_DEL_UUID
: {
1121 CDEBUG(D_IOCTL
, "removing mappings for uuid %s\n",
1122 (lcfg
->lcfg_bufcount
< 2 || LUSTRE_CFG_BUFLEN(lcfg
, 1) == 0)
1123 ? "<all uuids>" : lustre_cfg_string(lcfg
, 1));
1125 err
= class_del_uuid(lustre_cfg_string(lcfg
, 1));
1128 case LCFG_MOUNTOPT
: {
1129 CDEBUG(D_IOCTL
, "mountopt: profile %s osc %s mdc %s\n",
1130 lustre_cfg_string(lcfg
, 1),
1131 lustre_cfg_string(lcfg
, 2),
1132 lustre_cfg_string(lcfg
, 3));
1133 /* set these mount options somewhere, so ll_fill_super
1135 err
= class_add_profile(LUSTRE_CFG_BUFLEN(lcfg
, 1),
1136 lustre_cfg_string(lcfg
, 1),
1137 LUSTRE_CFG_BUFLEN(lcfg
, 2),
1138 lustre_cfg_string(lcfg
, 2),
1139 LUSTRE_CFG_BUFLEN(lcfg
, 3),
1140 lustre_cfg_string(lcfg
, 3));
1143 case LCFG_DEL_MOUNTOPT
: {
1144 CDEBUG(D_IOCTL
, "mountopt: profile %s\n",
1145 lustre_cfg_string(lcfg
, 1));
1146 class_del_profile(lustre_cfg_string(lcfg
, 1));
1150 case LCFG_SET_TIMEOUT
: {
1151 CDEBUG(D_IOCTL
, "changing lustre timeout from %d to %d\n",
1152 obd_timeout
, lcfg
->lcfg_num
);
1153 obd_timeout
= max(lcfg
->lcfg_num
, 1U);
1154 obd_timeout_set
= 1;
1158 case LCFG_SET_LDLM_TIMEOUT
: {
1159 CDEBUG(D_IOCTL
, "changing lustre ldlm_timeout from %d to %d\n",
1160 ldlm_timeout
, lcfg
->lcfg_num
);
1161 ldlm_timeout
= max(lcfg
->lcfg_num
, 1U);
1162 if (ldlm_timeout
>= obd_timeout
)
1163 ldlm_timeout
= max(obd_timeout
/ 3, 1U);
1164 ldlm_timeout_set
= 1;
1168 case LCFG_SET_UPCALL
: {
1169 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1170 /* COMPAT_146 Don't fail on old configs */
1175 struct cfg_marker
*marker
;
1176 marker
= lustre_cfg_buf(lcfg
, 1);
1177 CDEBUG(D_IOCTL
, "marker %d (%#x) %.16s %s\n", marker
->cm_step
,
1178 marker
->cm_flags
, marker
->cm_tgtname
, marker
->cm_comment
);
1184 /* llite has no obd */
1185 if ((class_match_param(lustre_cfg_string(lcfg
, 1),
1186 PARAM_LLITE
, NULL
) == 0) &&
1187 client_process_config
) {
1188 err
= (*client_process_config
)(lcfg
);
1190 } else if ((class_match_param(lustre_cfg_string(lcfg
, 1),
1191 PARAM_SYS
, &tmp
) == 0)) {
1192 /* Global param settings */
1193 err
= class_set_global(tmp
, lcfg
->lcfg_num
, lcfg
);
1195 * Client or server should not fail to mount if
1196 * it hits an unknown configuration parameter.
1199 CWARN("Ignoring unknown param %s\n", tmp
);
1203 } else if ((class_match_param(lustre_cfg_string(lcfg
, 1),
1204 PARAM_QUOTA
, &tmp
) == 0) &&
1205 quota_process_config
) {
1206 err
= (*quota_process_config
)(lcfg
);
1212 case LCFG_SET_PARAM
: {
1213 err
= process_param2_config(lcfg
);
1217 /* Commands that require a device */
1218 obd
= class_name2obd(lustre_cfg_string(lcfg
, 0));
1220 if (!LUSTRE_CFG_BUFLEN(lcfg
, 0))
1221 CERROR("this lcfg command requires a device name\n");
1223 CERROR("no device for: %s\n",
1224 lustre_cfg_string(lcfg
, 0));
1230 switch (lcfg
->lcfg_command
) {
1232 err
= class_setup(obd
, lcfg
);
1236 err
= class_detach(obd
, lcfg
);
1240 case LCFG_CLEANUP
: {
1241 err
= class_cleanup(obd
, lcfg
);
1245 case LCFG_ADD_CONN
: {
1246 err
= class_add_conn(obd
, lcfg
);
1250 case LCFG_DEL_CONN
: {
1251 err
= class_del_conn(obd
, lcfg
);
1255 case LCFG_POOL_NEW
: {
1256 err
= obd_pool_new(obd
, lustre_cfg_string(lcfg
, 2));
1260 case LCFG_POOL_ADD
: {
1261 err
= obd_pool_add(obd
, lustre_cfg_string(lcfg
, 2),
1262 lustre_cfg_string(lcfg
, 3));
1266 case LCFG_POOL_REM
: {
1267 err
= obd_pool_rem(obd
, lustre_cfg_string(lcfg
, 2),
1268 lustre_cfg_string(lcfg
, 3));
1272 case LCFG_POOL_DEL
: {
1273 err
= obd_pool_del(obd
, lustre_cfg_string(lcfg
, 2));
1278 err
= obd_process_config(obd
, sizeof(*lcfg
), lcfg
);
1284 if ((err
< 0) && !(lcfg
->lcfg_command
& LCFG_REQUIRED
)) {
1285 CWARN("Ignoring error %d on optional command %#x\n", err
,
1286 lcfg
->lcfg_command
);
1291 EXPORT_SYMBOL(class_process_config
);
1293 int class_process_proc_param(char *prefix
, struct lprocfs_vars
*lvars
,
1294 struct lustre_cfg
*lcfg
, void *data
)
1296 struct lprocfs_vars
*var
;
1297 struct file fakefile
;
1298 struct seq_file fake_seqfile
;
1300 int i
, keylen
, vallen
;
1301 int matched
= 0, j
= 0;
1305 if (lcfg
->lcfg_command
!= LCFG_PARAM
) {
1306 CERROR("Unknown command: %d\n", lcfg
->lcfg_command
);
1310 /* fake a seq file so that var->fops->write can work... */
1311 fakefile
.private_data
= &fake_seqfile
;
1312 fake_seqfile
.private = data
;
1313 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1314 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1315 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1316 for (i
= 1; i
< lcfg
->lcfg_bufcount
; i
++) {
1317 key
= lustre_cfg_buf(lcfg
, i
);
1318 /* Strip off prefix */
1319 class_match_param(key
, prefix
, &key
);
1320 sval
= strchr(key
, '=');
1321 if (!sval
|| (*(sval
+ 1) == 0)) {
1322 CERROR("Can't parse param %s (missing '=')\n", key
);
1323 /* rc = -EINVAL; continue parsing other params */
1326 keylen
= sval
- key
;
1328 vallen
= strlen(sval
);
1331 /* Search proc entries */
1332 while (lvars
[j
].name
) {
1334 if (class_match_param(key
, (char *)var
->name
, NULL
) == 0
1335 && keylen
== strlen(var
->name
)) {
1338 if (var
->fops
&& var
->fops
->write
) {
1342 rc
= (var
->fops
->write
)(&fakefile
, sval
,
1351 /* If the prefix doesn't match, return error so we
1352 can pass it down the stack */
1353 if (strnchr(key
, keylen
, '.'))
1355 CERROR("%s: unknown param %s\n",
1356 (char *)lustre_cfg_string(lcfg
, 0), key
);
1357 /* rc = -EINVAL; continue parsing other params */
1359 } else if (rc
< 0) {
1360 CERROR("writing proc entry %s err %d\n",
1364 CDEBUG(D_CONFIG
, "%s.%.*s: Set parameter %.*s=%s\n",
1365 lustre_cfg_string(lcfg
, 0),
1366 (int)strlen(prefix
) - 1, prefix
,
1367 (int)(sval
- key
- 1), key
, sval
);
1377 EXPORT_SYMBOL(class_process_proc_param
);
1379 extern int lustre_check_exclusion(struct super_block
*sb
, char *svname
);
1381 /** Parse a configuration llog, doing various manipulations on them
1382 * for various reasons, (modifications for compatibility, skip obsolete
1383 * records, change uuids, etc), then class_process_config() resulting
1386 int class_config_llog_handler(const struct lu_env
*env
,
1387 struct llog_handle
*handle
,
1388 struct llog_rec_hdr
*rec
, void *data
)
1390 struct config_llog_instance
*clli
= data
;
1391 int cfg_len
= rec
->lrh_len
;
1392 char *cfg_buf
= (char *) (rec
+ 1);
1395 //class_config_dump_handler(handle, rec, data);
1397 switch (rec
->lrh_type
) {
1399 struct lustre_cfg
*lcfg
, *lcfg_new
;
1400 struct lustre_cfg_bufs bufs
;
1401 char *inst_name
= NULL
;
1403 int inst
= 0, swab
= 0;
1405 lcfg
= (struct lustre_cfg
*)cfg_buf
;
1406 if (lcfg
->lcfg_version
== __swab32(LUSTRE_CFG_VERSION
)) {
1407 lustre_swab_lustre_cfg(lcfg
);
1411 rc
= lustre_cfg_sanity_check(cfg_buf
, cfg_len
);
1415 /* Figure out config state info */
1416 if (lcfg
->lcfg_command
== LCFG_MARKER
) {
1417 struct cfg_marker
*marker
= lustre_cfg_buf(lcfg
, 1);
1418 lustre_swab_cfg_marker(marker
, swab
,
1419 LUSTRE_CFG_BUFLEN(lcfg
, 1));
1420 CDEBUG(D_CONFIG
, "Marker, inst_flg=%#x mark_flg=%#x\n",
1421 clli
->cfg_flags
, marker
->cm_flags
);
1422 if (marker
->cm_flags
& CM_START
) {
1423 /* all previous flags off */
1424 clli
->cfg_flags
= CFG_F_MARKER
;
1425 if (marker
->cm_flags
& CM_SKIP
) {
1426 clli
->cfg_flags
|= CFG_F_SKIP
;
1427 CDEBUG(D_CONFIG
, "SKIP #%d\n",
1429 } else if ((marker
->cm_flags
& CM_EXCLUDE
) ||
1431 lustre_check_exclusion(clli
->cfg_sb
,
1432 marker
->cm_tgtname
))) {
1433 clli
->cfg_flags
|= CFG_F_EXCLUDE
;
1434 CDEBUG(D_CONFIG
, "EXCLUDE %d\n",
1437 } else if (marker
->cm_flags
& CM_END
) {
1438 clli
->cfg_flags
= 0;
1441 /* A config command without a start marker before it is
1442 illegal (post 146) */
1443 if (!(clli
->cfg_flags
& CFG_F_COMPAT146
) &&
1444 !(clli
->cfg_flags
& CFG_F_MARKER
) &&
1445 (lcfg
->lcfg_command
!= LCFG_MARKER
)) {
1446 CWARN("Config not inside markers, ignoring! "
1447 "(inst: %p, uuid: %s, flags: %#x)\n",
1449 clli
->cfg_uuid
.uuid
, clli
->cfg_flags
);
1450 clli
->cfg_flags
|= CFG_F_SKIP
;
1452 if (clli
->cfg_flags
& CFG_F_SKIP
) {
1453 CDEBUG(D_CONFIG
, "skipping %#x\n",
1456 /* No processing! */
1461 * For interoperability between 1.8 and 2.0,
1462 * rename "mds" obd device type to "mdt".
1465 char *typename
= lustre_cfg_string(lcfg
, 1);
1466 char *index
= lustre_cfg_string(lcfg
, 2);
1468 if ((lcfg
->lcfg_command
== LCFG_ATTACH
&& typename
&&
1469 strcmp(typename
, "mds") == 0)) {
1470 CWARN("For 1.8 interoperability, rename obd "
1471 "type from mds to mdt\n");
1474 if ((lcfg
->lcfg_command
== LCFG_SETUP
&& index
&&
1475 strcmp(index
, "type") == 0)) {
1476 CDEBUG(D_INFO
, "For 1.8 interoperability, "
1477 "set this index to '0'\n");
1484 if (clli
->cfg_flags
& CFG_F_EXCLUDE
) {
1485 CDEBUG(D_CONFIG
, "cmd: %x marked EXCLUDED\n",
1486 lcfg
->lcfg_command
);
1487 if (lcfg
->lcfg_command
== LCFG_LOV_ADD_OBD
)
1488 /* Add inactive instead */
1489 lcfg
->lcfg_command
= LCFG_LOV_ADD_INA
;
1492 lustre_cfg_bufs_init(&bufs
, lcfg
);
1494 if (clli
&& clli
->cfg_instance
&&
1495 LUSTRE_CFG_BUFLEN(lcfg
, 0) > 0){
1497 inst_len
= LUSTRE_CFG_BUFLEN(lcfg
, 0) +
1498 sizeof(clli
->cfg_instance
) * 2 + 4;
1499 OBD_ALLOC(inst_name
, inst_len
);
1500 if (inst_name
== NULL
) {
1504 sprintf(inst_name
, "%s-%p",
1505 lustre_cfg_string(lcfg
, 0),
1506 clli
->cfg_instance
);
1507 lustre_cfg_bufs_set_string(&bufs
, 0, inst_name
);
1508 CDEBUG(D_CONFIG
, "cmd %x, instance name: %s\n",
1509 lcfg
->lcfg_command
, inst_name
);
1512 /* we override the llog's uuid for clients, to insure they
1514 if (clli
&& clli
->cfg_instance
!= NULL
&&
1515 lcfg
->lcfg_command
== LCFG_ATTACH
) {
1516 lustre_cfg_bufs_set_string(&bufs
, 2,
1517 clli
->cfg_uuid
.uuid
);
1520 * sptlrpc config record, we expect 2 data segments:
1521 * [0]: fs_name/target_name,
1523 * moving them to index [1] and [2], and insert MGC's
1524 * obdname at index [0].
1526 if (clli
&& clli
->cfg_instance
== NULL
&&
1527 lcfg
->lcfg_command
== LCFG_SPTLRPC_CONF
) {
1528 lustre_cfg_bufs_set(&bufs
, 2, bufs
.lcfg_buf
[1],
1529 bufs
.lcfg_buflen
[1]);
1530 lustre_cfg_bufs_set(&bufs
, 1, bufs
.lcfg_buf
[0],
1531 bufs
.lcfg_buflen
[0]);
1532 lustre_cfg_bufs_set_string(&bufs
, 0,
1536 lcfg_new
= lustre_cfg_new(lcfg
->lcfg_command
, &bufs
);
1538 lcfg_new
->lcfg_num
= lcfg
->lcfg_num
;
1539 lcfg_new
->lcfg_flags
= lcfg
->lcfg_flags
;
1541 /* XXX Hack to try to remain binary compatible with
1542 * pre-newconfig logs */
1543 if (lcfg
->lcfg_nal
!= 0 && /* pre-newconfig log? */
1544 (lcfg
->lcfg_nid
>> 32) == 0) {
1545 __u32 addr
= (__u32
)(lcfg
->lcfg_nid
& 0xffffffff);
1547 lcfg_new
->lcfg_nid
=
1548 LNET_MKNID(LNET_MKNET(lcfg
->lcfg_nal
, 0), addr
);
1549 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1550 lcfg
->lcfg_nal
, addr
,
1551 libcfs_nid2str(lcfg_new
->lcfg_nid
));
1553 lcfg_new
->lcfg_nid
= lcfg
->lcfg_nid
;
1556 lcfg_new
->lcfg_nal
= 0; /* illegal value for obsolete field */
1558 rc
= class_process_config(lcfg_new
);
1559 lustre_cfg_free(lcfg_new
);
1562 OBD_FREE(inst_name
, inst_len
);
1566 CERROR("Unknown llog record type %#x encountered\n",
1572 CERROR("%s: cfg command failed: rc = %d\n",
1573 handle
->lgh_ctxt
->loc_obd
->obd_name
, rc
);
1574 class_config_dump_handler(NULL
, handle
, rec
, data
);
1578 EXPORT_SYMBOL(class_config_llog_handler
);
1580 int class_config_parse_llog(const struct lu_env
*env
, struct llog_ctxt
*ctxt
,
1581 char *name
, struct config_llog_instance
*cfg
)
1583 struct llog_process_cat_data cd
= {0, 0};
1584 struct llog_handle
*llh
;
1588 CDEBUG(D_INFO
, "looking up llog %s\n", name
);
1589 rc
= llog_open(env
, ctxt
, &llh
, NULL
, name
, LLOG_OPEN_EXISTS
);
1593 rc
= llog_init_handle(env
, llh
, LLOG_F_IS_PLAIN
, NULL
);
1597 /* continue processing from where we last stopped to end-of-log */
1599 cd
.lpcd_first_idx
= cfg
->cfg_last_idx
;
1600 callback
= cfg
->cfg_callback
;
1601 LASSERT(callback
!= NULL
);
1603 callback
= class_config_llog_handler
;
1606 cd
.lpcd_last_idx
= 0;
1608 rc
= llog_process(env
, llh
, callback
, cfg
, &cd
);
1610 CDEBUG(D_CONFIG
, "Processed log %s gen %d-%d (rc=%d)\n", name
,
1611 cd
.lpcd_first_idx
+ 1, cd
.lpcd_last_idx
, rc
);
1613 cfg
->cfg_last_idx
= cd
.lpcd_last_idx
;
1616 llog_close(env
, llh
);
1619 EXPORT_SYMBOL(class_config_parse_llog
);
1622 * parse config record and output dump in supplied buffer.
1623 * This is separated from class_config_dump_handler() to use
1624 * for ioctl needs as well
1626 int class_config_parse_rec(struct llog_rec_hdr
*rec
, char *buf
, int size
)
1628 struct lustre_cfg
*lcfg
= (struct lustre_cfg
*)(rec
+ 1);
1630 char *end
= buf
+ size
;
1633 LASSERT(rec
->lrh_type
== OBD_CFG_REC
);
1634 rc
= lustre_cfg_sanity_check(lcfg
, rec
->lrh_len
);
1638 ptr
+= snprintf(ptr
, end
-ptr
, "cmd=%05x ", lcfg
->lcfg_command
);
1639 if (lcfg
->lcfg_flags
)
1640 ptr
+= snprintf(ptr
, end
-ptr
, "flags=%#08x ",
1644 ptr
+= snprintf(ptr
, end
-ptr
, "num=%#08x ", lcfg
->lcfg_num
);
1647 ptr
+= snprintf(ptr
, end
-ptr
, "nid=%s(%#llx)\n ",
1648 libcfs_nid2str(lcfg
->lcfg_nid
),
1651 if (lcfg
->lcfg_command
== LCFG_MARKER
) {
1652 struct cfg_marker
*marker
= lustre_cfg_buf(lcfg
, 1);
1654 ptr
+= snprintf(ptr
, end
-ptr
, "marker=%d(%#x)%s '%s'",
1655 marker
->cm_step
, marker
->cm_flags
,
1656 marker
->cm_tgtname
, marker
->cm_comment
);
1660 for (i
= 0; i
< lcfg
->lcfg_bufcount
; i
++) {
1661 ptr
+= snprintf(ptr
, end
-ptr
, "%d:%s ", i
,
1662 lustre_cfg_string(lcfg
, i
));
1665 /* return consumed bytes */
1670 int class_config_dump_handler(const struct lu_env
*env
,
1671 struct llog_handle
*handle
,
1672 struct llog_rec_hdr
*rec
, void *data
)
1677 OBD_ALLOC(outstr
, 256);
1681 if (rec
->lrh_type
== OBD_CFG_REC
) {
1682 class_config_parse_rec(rec
, outstr
, 256);
1683 LCONSOLE(D_WARNING
, " %s\n", outstr
);
1685 LCONSOLE(D_WARNING
, "unhandled lrh_type: %#x\n", rec
->lrh_type
);
1689 OBD_FREE(outstr
, 256);
1693 int class_config_dump_llog(const struct lu_env
*env
, struct llog_ctxt
*ctxt
,
1694 char *name
, struct config_llog_instance
*cfg
)
1696 struct llog_handle
*llh
;
1699 LCONSOLE_INFO("Dumping config log %s\n", name
);
1701 rc
= llog_open(env
, ctxt
, &llh
, NULL
, name
, LLOG_OPEN_EXISTS
);
1705 rc
= llog_init_handle(env
, llh
, LLOG_F_IS_PLAIN
, NULL
);
1709 rc
= llog_process(env
, llh
, class_config_dump_handler
, cfg
, NULL
);
1711 llog_close(env
, llh
);
1713 LCONSOLE_INFO("End config log %s\n", name
);
1716 EXPORT_SYMBOL(class_config_dump_llog
);
1718 /** Call class_cleanup and class_detach.
1719 * "Manual" only in the sense that we're faking lcfg commands.
1721 int class_manual_cleanup(struct obd_device
*obd
)
1724 struct lustre_cfg
*lcfg
;
1725 struct lustre_cfg_bufs bufs
;
1729 CERROR("empty cleanup\n");
1738 CDEBUG(D_CONFIG
, "Manual cleanup of %s (flags='%s')\n",
1739 obd
->obd_name
, flags
);
1741 lustre_cfg_bufs_reset(&bufs
, obd
->obd_name
);
1742 lustre_cfg_bufs_set_string(&bufs
, 1, flags
);
1743 lcfg
= lustre_cfg_new(LCFG_CLEANUP
, &bufs
);
1747 rc
= class_process_config(lcfg
);
1749 CERROR("cleanup failed %d: %s\n", rc
, obd
->obd_name
);
1753 /* the lcfg is almost the same for both ops */
1754 lcfg
->lcfg_command
= LCFG_DETACH
;
1755 rc
= class_process_config(lcfg
);
1757 CERROR("detach failed %d: %s\n", rc
, obd
->obd_name
);
1759 lustre_cfg_free(lcfg
);
1762 EXPORT_SYMBOL(class_manual_cleanup
);
1765 * uuid<->export lustre hash operations
1769 uuid_hash(struct cfs_hash
*hs
, const void *key
, unsigned mask
)
1771 return cfs_hash_djb2_hash(((struct obd_uuid
*)key
)->uuid
,
1772 sizeof(((struct obd_uuid
*)key
)->uuid
), mask
);
1776 uuid_key(struct hlist_node
*hnode
)
1778 struct obd_export
*exp
;
1780 exp
= hlist_entry(hnode
, struct obd_export
, exp_uuid_hash
);
1782 return &exp
->exp_client_uuid
;
1786 * NOTE: It is impossible to find an export that is in failed
1787 * state with this function
1790 uuid_keycmp(const void *key
, struct hlist_node
*hnode
)
1792 struct obd_export
*exp
;
1795 exp
= hlist_entry(hnode
, struct obd_export
, exp_uuid_hash
);
1797 return obd_uuid_equals(key
, &exp
->exp_client_uuid
) &&
1802 uuid_export_object(struct hlist_node
*hnode
)
1804 return hlist_entry(hnode
, struct obd_export
, exp_uuid_hash
);
1808 uuid_export_get(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1810 struct obd_export
*exp
;
1812 exp
= hlist_entry(hnode
, struct obd_export
, exp_uuid_hash
);
1813 class_export_get(exp
);
1817 uuid_export_put_locked(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1819 struct obd_export
*exp
;
1821 exp
= hlist_entry(hnode
, struct obd_export
, exp_uuid_hash
);
1822 class_export_put(exp
);
1825 static cfs_hash_ops_t uuid_hash_ops
= {
1826 .hs_hash
= uuid_hash
,
1828 .hs_keycmp
= uuid_keycmp
,
1829 .hs_object
= uuid_export_object
,
1830 .hs_get
= uuid_export_get
,
1831 .hs_put_locked
= uuid_export_put_locked
,
1836 * nid<->export hash operations
1840 nid_hash(struct cfs_hash
*hs
, const void *key
, unsigned mask
)
1842 return cfs_hash_djb2_hash(key
, sizeof(lnet_nid_t
), mask
);
1846 nid_key(struct hlist_node
*hnode
)
1848 struct obd_export
*exp
;
1850 exp
= hlist_entry(hnode
, struct obd_export
, exp_nid_hash
);
1852 return &exp
->exp_connection
->c_peer
.nid
;
1856 * NOTE: It is impossible to find an export that is in failed
1857 * state with this function
1860 nid_kepcmp(const void *key
, struct hlist_node
*hnode
)
1862 struct obd_export
*exp
;
1865 exp
= hlist_entry(hnode
, struct obd_export
, exp_nid_hash
);
1867 return exp
->exp_connection
->c_peer
.nid
== *(lnet_nid_t
*)key
&&
1872 nid_export_object(struct hlist_node
*hnode
)
1874 return hlist_entry(hnode
, struct obd_export
, exp_nid_hash
);
1878 nid_export_get(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1880 struct obd_export
*exp
;
1882 exp
= hlist_entry(hnode
, struct obd_export
, exp_nid_hash
);
1883 class_export_get(exp
);
1887 nid_export_put_locked(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1889 struct obd_export
*exp
;
1891 exp
= hlist_entry(hnode
, struct obd_export
, exp_nid_hash
);
1892 class_export_put(exp
);
1895 static cfs_hash_ops_t nid_hash_ops
= {
1896 .hs_hash
= nid_hash
,
1898 .hs_keycmp
= nid_kepcmp
,
1899 .hs_object
= nid_export_object
,
1900 .hs_get
= nid_export_get
,
1901 .hs_put_locked
= nid_export_put_locked
,
1906 * nid<->nidstats hash operations
1910 nidstats_key(struct hlist_node
*hnode
)
1912 struct nid_stat
*ns
;
1914 ns
= hlist_entry(hnode
, struct nid_stat
, nid_hash
);
1920 nidstats_keycmp(const void *key
, struct hlist_node
*hnode
)
1922 return *(lnet_nid_t
*)nidstats_key(hnode
) == *(lnet_nid_t
*)key
;
1926 nidstats_object(struct hlist_node
*hnode
)
1928 return hlist_entry(hnode
, struct nid_stat
, nid_hash
);
1932 nidstats_get(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1934 struct nid_stat
*ns
;
1936 ns
= hlist_entry(hnode
, struct nid_stat
, nid_hash
);
1941 nidstats_put_locked(struct cfs_hash
*hs
, struct hlist_node
*hnode
)
1943 struct nid_stat
*ns
;
1945 ns
= hlist_entry(hnode
, struct nid_stat
, nid_hash
);
1949 static cfs_hash_ops_t nid_stat_hash_ops
= {
1950 .hs_hash
= nid_hash
,
1951 .hs_key
= nidstats_key
,
1952 .hs_keycmp
= nidstats_keycmp
,
1953 .hs_object
= nidstats_object
,
1954 .hs_get
= nidstats_get
,
1955 .hs_put_locked
= nidstats_put_locked
,