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) 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/obdclass/obd_mount_server.c
38 * Server mount routines
40 * Author: Nathan Rutman <nathan@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_CLASS
45 #define D_MOUNT (D_SUPER | D_CONFIG /* | D_WARNING */)
46 #define PRINT_CMD CDEBUG
47 #define PRINT_MASK (D_SUPER | D_CONFIG)
51 #include <lustre_fsfilt.h>
52 #include <obd_class.h>
53 #include <lustre/lustre_user.h>
54 #include <linux/version.h>
55 #include <lustre_log.h>
56 #include <lustre_disk.h>
57 #include <lustre_param.h>
58 #ifdef HAVE_KERNEL_LOCKED
59 #include <linux/smp_lock.h>
62 /*********** mount lookup *********/
64 DEFINE_MUTEX(lustre_mount_info_lock);
65 static CFS_LIST_HEAD(server_mount_info_list);
67 static struct lustre_mount_info *server_find_mount(const char *name)
70 struct lustre_mount_info *lmi;
73 cfs_list_for_each(tmp, &server_mount_info_list) {
74 lmi = cfs_list_entry(tmp, struct lustre_mount_info,
76 if (strcmp(name, lmi->lmi_name) == 0)
82 /* we must register an obd for a mount before we call the setup routine.
83 *_setup will call lustre_get_mount to get the mnt struct
84 by obd_name, since we can't pass the pointer to setup. */
85 static int server_register_mount(const char *name, struct super_block *sb,
88 struct lustre_mount_info *lmi;
94 OBD_ALLOC(lmi, sizeof(*lmi));
97 OBD_ALLOC(name_cp, strlen(name) + 1);
99 OBD_FREE(lmi, sizeof(*lmi));
102 strcpy(name_cp, name);
104 mutex_lock(&lustre_mount_info_lock);
106 if (server_find_mount(name)) {
107 mutex_unlock(&lustre_mount_info_lock);
108 OBD_FREE(lmi, sizeof(*lmi));
109 OBD_FREE(name_cp, strlen(name) + 1);
110 CERROR("Already registered %s\n", name);
113 lmi->lmi_name = name_cp;
116 cfs_list_add(&lmi->lmi_list_chain, &server_mount_info_list);
118 mutex_unlock(&lustre_mount_info_lock);
120 CDEBUG(D_MOUNT, "reg_mnt %p from %s\n", lmi->lmi_mnt, name);
125 /* when an obd no longer needs a mount */
126 static int server_deregister_mount(const char *name)
128 struct lustre_mount_info *lmi;
131 mutex_lock(&lustre_mount_info_lock);
132 lmi = server_find_mount(name);
134 mutex_unlock(&lustre_mount_info_lock);
135 CERROR("%s not registered\n", name);
139 CDEBUG(D_MOUNT, "dereg_mnt %p from %s\n", lmi->lmi_mnt, name);
141 OBD_FREE(lmi->lmi_name, strlen(lmi->lmi_name) + 1);
142 cfs_list_del(&lmi->lmi_list_chain);
143 OBD_FREE(lmi, sizeof(*lmi));
144 mutex_unlock(&lustre_mount_info_lock);
149 /* obd's look up a registered mount using their obdname. This is just
150 for initial obd setup to find the mount struct. It should not be
151 called every time you want to mntget. */
152 struct lustre_mount_info *server_get_mount(const char *name)
154 struct lustre_mount_info *lmi;
155 struct lustre_sb_info *lsi;
158 mutex_lock(&lustre_mount_info_lock);
159 lmi = server_find_mount(name);
160 mutex_unlock(&lustre_mount_info_lock);
162 CERROR("Can't find mount for %s\n", name);
165 lsi = s2lsi(lmi->lmi_sb);
167 cfs_atomic_inc(&lsi->lsi_mounts);
169 CDEBUG(D_MOUNT, "get_mnt %p from %s, refs=%d\n", lmi->lmi_mnt,
170 name, cfs_atomic_read(&lsi->lsi_mounts));
174 EXPORT_SYMBOL(server_get_mount);
177 * Used by mdt to get mount_info from obdname.
178 * There are no blocking when using the mount_info.
179 * Do not use server_get_mount for this purpose.
181 struct lustre_mount_info *server_get_mount_2(const char *name)
183 struct lustre_mount_info *lmi;
186 mutex_lock(&lustre_mount_info_lock);
187 lmi = server_find_mount(name);
188 mutex_unlock(&lustre_mount_info_lock);
190 CERROR("Can't find mount for %s\n", name);
194 EXPORT_SYMBOL(server_get_mount_2);
196 /* to be called from obd_cleanup methods */
197 int server_put_mount(const char *name, struct vfsmount *mnt)
199 struct lustre_mount_info *lmi;
200 struct lustre_sb_info *lsi;
203 mutex_lock(&lustre_mount_info_lock);
204 lmi = server_find_mount(name);
205 mutex_unlock(&lustre_mount_info_lock);
207 CERROR("Can't find mount for %s\n", name);
210 lsi = s2lsi(lmi->lmi_sb);
212 CDEBUG(D_MOUNT, "put_mnt %p from %s, refs=%d\n",
213 lmi->lmi_mnt, name, cfs_atomic_read(&lsi->lsi_mounts));
215 if (lustre_put_lsi(lmi->lmi_sb))
216 CDEBUG(D_MOUNT, "Last put of mnt %p from %s\n",
219 /* this obd should never need the mount again */
220 server_deregister_mount(name);
224 EXPORT_SYMBOL(server_put_mount);
226 /* Corresponding to server_get_mount_2 */
227 int server_put_mount_2(const char *name, struct vfsmount *mnt)
232 EXPORT_SYMBOL(server_put_mount_2);
234 /* Set up a MGS to serve startup logs */
235 static int server_start_mgs(struct super_block *sb)
237 struct lustre_sb_info *lsi = s2lsi(sb);
238 struct vfsmount *mnt = lsi->lsi_srv_mnt;
239 struct lustre_mount_info *lmi;
243 /* It is impossible to have more than 1 MGS per node, since
244 MGC wouldn't know which to connect to */
245 lmi = server_find_mount(LUSTRE_MGS_OBDNAME);
247 lsi = s2lsi(lmi->lmi_sb);
248 LCONSOLE_ERROR_MSG(0x15d, "The MGS service was already started"
253 CDEBUG(D_CONFIG, "Start MGS service %s\n", LUSTRE_MGS_OBDNAME);
255 rc = server_register_mount(LUSTRE_MGS_OBDNAME, sb, mnt);
258 rc = lustre_start_simple(LUSTRE_MGS_OBDNAME, LUSTRE_MGS_NAME,
259 LUSTRE_MGS_OBDNAME, 0, 0,
260 lsi->lsi_osd_obdname, 0);
261 /* Do NOT call server_deregister_mount() here. This leads to
262 * inability cleanup cleanly and free lsi and other stuff when
263 * mgs calls server_put_mount() in error handling case. -umka */
267 LCONSOLE_ERROR_MSG(0x15e, "Failed to start MGS '%s' (%d). "
268 "Is the 'mgs' module loaded?\n",
269 LUSTRE_MGS_OBDNAME, rc);
273 static int server_stop_mgs(struct super_block *sb)
275 struct obd_device *obd;
279 CDEBUG(D_MOUNT, "Stop MGS service %s\n", LUSTRE_MGS_OBDNAME);
281 /* There better be only one MGS */
282 obd = class_name2obd(LUSTRE_MGS_OBDNAME);
284 CDEBUG(D_CONFIG, "mgs %s not running\n", LUSTRE_MGS_OBDNAME);
288 /* The MGS should always stop when we say so */
290 rc = class_manual_cleanup(obd);
294 /* Since there's only one mgc per node, we have to change it's fs to get
295 access to the right disk. */
296 static int server_mgc_set_fs(struct obd_device *mgc, struct super_block *sb)
298 struct lustre_sb_info *lsi = s2lsi(sb);
302 CDEBUG(D_MOUNT, "Set mgc disk for %s\n", lsi->lsi_lmd->lmd_dev);
304 /* cl_mgc_sem in mgc insures we sleep if the mgc_fs is busy */
305 rc = obd_set_info_async(NULL, mgc->obd_self_export,
306 sizeof(KEY_SET_FS), KEY_SET_FS,
307 sizeof(*sb), sb, NULL);
309 CERROR("can't set_fs %d\n", rc);
314 static int server_mgc_clear_fs(struct obd_device *mgc)
319 CDEBUG(D_MOUNT, "Unassign mgc disk\n");
321 rc = obd_set_info_async(NULL, mgc->obd_self_export,
322 sizeof(KEY_CLEAR_FS), KEY_CLEAR_FS,
327 static int is_mdc_device(const char *devname)
331 ptr = strrchr(devname, '-');
332 if (ptr != NULL && strcmp(ptr, "-mdc") == 0)
338 static inline int tgt_is_mdt0(const char *tgtname)
343 type = server_name2index(tgtname, &idx, NULL);
344 if (type != LDD_F_SV_TYPE_MDT)
350 static inline int is_mdc_for_mdt0(const char *devname)
354 if (!is_mdc_device(devname))
357 ptr = strrchr(devname, '-');
362 if (tgt_is_mdt0(devname)) {
371 * Convert OST/MDT name(fsname-OSTxxxx) to a lwp name
372 * (fsname-MDT0000-lwp-OSTxxxx)
374 int tgt_name2lwpname(const char *svname, char *lwpname)
381 OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
385 rc = server_name2fsname(svname, fsname, &tgt);
387 CERROR("%s: failed to get fsname from svname. %d\n",
392 if (*tgt != '-' && *tgt != ':') {
393 CERROR("%s: invalid svname name!\n", svname);
394 GOTO(cleanup, rc = -EINVAL);
398 if (strncmp(tgt, "OST", 3) != 0 && strncmp(tgt, "MDT", 3) != 0) {
399 CERROR("%s is not an OST or MDT target!\n", svname);
400 GOTO(cleanup, rc = -EINVAL);
402 sprintf(lwpname, "%s-MDT0000-%s-%s", fsname, LUSTRE_LWP_NAME, tgt);
405 OBD_FREE(fsname, MTI_NAME_MAXLEN);
408 EXPORT_SYMBOL(tgt_name2lwpname);
410 static CFS_LIST_HEAD(lwp_register_list);
411 DEFINE_MUTEX(lwp_register_list_lock);
413 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
414 register_lwp_cb cb_func, void *cb_data)
416 struct obd_device *lwp;
417 struct lwp_register_item *lri;
420 LASSERTF(strlen(lwpname) < MTI_NAME_MAXLEN, "lwpname is too long %s\n",
422 LASSERT(exp != NULL && *exp == NULL);
428 mutex_lock(&lwp_register_list_lock);
430 lwp = class_name2obd(lwpname);
431 if (lwp != NULL && lwp->obd_set_up == 1) {
432 struct obd_uuid *uuid;
436 mutex_unlock(&lwp_register_list_lock);
440 memcpy(uuid->uuid, lwpname, strlen(lwpname));
441 *exp = cfs_hash_lookup(lwp->obd_uuid_hash, uuid);
445 memcpy(lri->lri_name, lwpname, strlen(lwpname));
447 lri->lri_cb_func = cb_func;
448 lri->lri_cb_data = cb_data;
449 CFS_INIT_LIST_HEAD(&lri->lri_list);
450 cfs_list_add(&lri->lri_list, &lwp_register_list);
452 if (*exp != NULL && cb_func != NULL)
455 mutex_unlock(&lwp_register_list_lock);
458 EXPORT_SYMBOL(lustre_register_lwp_item);
460 void lustre_deregister_lwp_item(struct obd_export **exp)
462 struct lwp_register_item *lri, *tmp;
464 mutex_lock(&lwp_register_list_lock);
465 cfs_list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) {
466 if (exp == lri->lri_exp) {
468 class_export_put(*exp);
469 cfs_list_del(&lri->lri_list);
474 mutex_unlock(&lwp_register_list_lock);
476 EXPORT_SYMBOL(lustre_deregister_lwp_item);
478 static void lustre_notify_lwp_list(struct obd_export *exp)
480 struct lwp_register_item *lri, *tmp;
481 LASSERT(exp != NULL);
483 mutex_lock(&lwp_register_list_lock);
484 cfs_list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) {
485 if (strcmp(exp->exp_obd->obd_name, lri->lri_name))
487 if (*lri->lri_exp != NULL)
489 *lri->lri_exp = class_export_get(exp);
490 if (lri->lri_cb_func != NULL)
491 lri->lri_cb_func(lri->lri_cb_data);
493 mutex_unlock(&lwp_register_list_lock);
496 static int lustre_lwp_connect(struct obd_device *lwp)
499 struct lu_context session_ctx;
500 struct obd_export *exp;
501 struct obd_uuid *uuid = NULL;
502 struct obd_connect_data *data = NULL;
506 /* log has been fully processed, let clients connect */
507 rc = lu_env_init(&env, lwp->obd_lu_dev->ld_type->ldt_ctx_tags);
511 lu_context_init(&session_ctx, LCT_SESSION);
512 session_ctx.lc_thread = NULL;
513 lu_context_enter(&session_ctx);
514 env.le_ses = &session_ctx;
518 GOTO(out, rc = -ENOMEM);
520 data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX;
521 data->ocd_version = LUSTRE_VERSION_CODE;
522 data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS | OBD_CONNECT_FID |
523 OBD_CONNECT_AT | OBD_CONNECT_LRU_RESIZE |
524 OBD_CONNECT_FULL20 | OBD_CONNECT_LVB_TYPE |
525 OBD_CONNECT_LIGHTWEIGHT;
528 GOTO(out, rc = -ENOMEM);
530 if (strlen(lwp->obd_name) > sizeof(uuid->uuid)) {
531 CERROR("%s: Too long lwp name %s, max_size is %d\n",
532 lwp->obd_name, lwp->obd_name, (int)sizeof(uuid->uuid));
533 GOTO(out, rc = -EINVAL);
536 /* Use lwp name as the uuid, so we find the export by lwp name later */
537 memcpy(uuid->uuid, lwp->obd_name, strlen(lwp->obd_name));
538 rc = obd_connect(&env, &exp, lwp, uuid, data, NULL);
540 CERROR("%s: connect failed: rc = %d\n", lwp->obd_name, rc);
542 lustre_notify_lwp_list(exp);
551 lu_context_exit(&session_ctx);
552 lu_context_fini(&session_ctx);
558 * lwp is used by slaves (Non-MDT0 targets) to manage the connection
561 static int lustre_lwp_setup(struct lustre_cfg *lcfg, struct lustre_sb_info *lsi)
563 struct obd_connect_data *data = NULL;
564 struct obd_device *obd;
565 char *lwpname = NULL;
566 char *lwpuuid = NULL;
570 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
573 CERROR("%s: Can't add uuid: rc =%d\n", lsi->lsi_svname, rc);
577 OBD_ALLOC(lwpname, MTI_NAME_MAXLEN);
579 GOTO(out, rc = -ENOMEM);
581 rc = tgt_name2lwpname(lsi->lsi_svname, lwpname);
583 CERROR("%s: failed to generate lwp name. %d\n",
584 lsi->lsi_svname, rc);
588 OBD_ALLOC(lwpuuid, MTI_NAME_MAXLEN);
590 GOTO(out, rc = -ENOMEM);
592 sprintf(lwpuuid, "%s_UUID", lwpname);
593 rc = lustre_start_simple(lwpname, LUSTRE_LWP_NAME,
594 lwpuuid, lustre_cfg_string(lcfg, 1),
597 CERROR("%s: setup up failed: rc %d\n", lwpname, rc);
601 obd = class_name2obd(lwpname);
602 LASSERT(obd != NULL);
604 rc = lustre_lwp_connect(obd);
606 CERROR("%s: connect failed: rc = %d\n", lwpname, rc);
611 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
613 OBD_FREE(lwpuuid, MTI_NAME_MAXLEN);
618 /* the caller is responsible for memory free */
619 static struct obd_device *lustre_find_lwp(struct lustre_sb_info *lsi,
620 char **lwpname, char **logname)
622 struct obd_device *lwp;
626 LASSERT(lwpname != NULL);
627 LASSERT(IS_OST(lsi) || IS_MDT(lsi));
629 OBD_ALLOC(*lwpname, MTI_NAME_MAXLEN);
630 if (*lwpname == NULL)
631 RETURN(ERR_PTR(-ENOMEM));
633 if (logname != NULL) {
634 OBD_ALLOC(*logname, MTI_NAME_MAXLEN);
635 if (*logname == NULL)
636 GOTO(out, rc = -ENOMEM);
637 rc = server_name2fsname(lsi->lsi_svname, *lwpname, NULL);
639 CERROR("%s: failed to get fsname from svname. %d\n",
640 lsi->lsi_svname, rc);
641 GOTO(out, rc = -EINVAL);
643 sprintf(*logname, "%s-client", *lwpname);
646 rc = tgt_name2lwpname(lsi->lsi_svname, *lwpname);
648 CERROR("%s: failed to generate lwp name. %d\n",
649 lsi->lsi_svname, rc);
650 GOTO(out, rc = -EINVAL);
653 lwp = class_name2obd(*lwpname);
657 if (*lwpname != NULL) {
658 OBD_FREE(*lwpname, MTI_NAME_MAXLEN);
661 if (logname != NULL && *logname != NULL) {
662 OBD_FREE(*logname, MTI_NAME_MAXLEN);
668 RETURN(lwp != NULL ? lwp : ERR_PTR(-ENOENT));
671 static int lustre_lwp_add_conn(struct lustre_cfg *cfg,
672 struct lustre_sb_info *lsi)
674 struct lustre_cfg_bufs *bufs = NULL;
675 struct lustre_cfg *lcfg = NULL;
676 char *lwpname = NULL;
677 struct obd_device *lwp;
681 lwp = lustre_find_lwp(lsi, &lwpname, NULL);
683 CERROR("%s: can't find lwp device.\n", lsi->lsi_svname);
684 GOTO(out, rc = PTR_ERR(lwp));
686 LASSERT(lwpname != NULL);
690 GOTO(out, rc = -ENOMEM);
692 lustre_cfg_bufs_reset(bufs, lwpname);
693 lustre_cfg_bufs_set_string(bufs, 1,
694 lustre_cfg_string(cfg, 1));
696 lcfg = lustre_cfg_new(LCFG_ADD_CONN, bufs);
698 rc = class_add_conn(lwp, lcfg);
700 CERROR("%s: can't add conn: rc = %d\n", lwpname, rc);
706 lustre_cfg_free(lcfg);
708 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
713 * Retrieve MDT nids from the client log, then start the lwp device.
714 * there are only two scenarios which would include mdt nid.
716 * marker 5 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add mdc' xxx-
717 * add_uuid nid=192.168.122.162@tcp(0x20000c0a87aa2) 0: 1:192.168.122.162@tcp
718 * attach 0:lustre-MDT0000-mdc 1:mdc 2:lustre-clilmv_UUID
719 * setup 0:lustre-MDT0000-mdc 1:lustre-MDT0000_UUID 2:192.168.122.162@tcp
720 * add_uuid nid=192.168.172.1@tcp(0x20000c0a8ac01) 0: 1:192.168.172.1@tcp
721 * add_conn 0:lustre-MDT0000-mdc 1:192.168.172.1@tcp
722 * modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID xxxx
723 * marker 5 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add mdc' xxxx-
725 * marker 7 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx-
726 * add_uuid nid=192.168.122.2@tcp(0x20000c0a87a02) 0: 1:192.168.122.2@tcp
727 * add_conn 0:lustre-MDT0000-mdc 1:192.168.122.2@tcp
728 * marker 7 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx-
730 static int client_lwp_config_process(const struct lu_env *env,
731 struct llog_handle *handle,
732 struct llog_rec_hdr *rec, void *data)
734 struct config_llog_instance *clli = data;
735 int cfg_len = rec->lrh_len;
736 char *cfg_buf = (char *) (rec + 1);
737 struct lustre_cfg *lcfg = NULL;
738 struct lustre_sb_info *lsi;
739 int rc = 0, swab = 0;
742 if (rec->lrh_type != OBD_CFG_REC) {
743 CERROR("Unknown llog record type %#x encountered\n",
748 LASSERT(clli->cfg_sb != NULL);
749 lsi = s2lsi(clli->cfg_sb);
751 lcfg = (struct lustre_cfg *)cfg_buf;
752 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
753 lustre_swab_lustre_cfg(lcfg);
757 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
761 switch (lcfg->lcfg_command) {
763 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
765 lustre_swab_cfg_marker(marker, swab,
766 LUSTRE_CFG_BUFLEN(lcfg, 1));
767 if (marker->cm_flags & CM_SKIP ||
768 marker->cm_flags & CM_EXCLUDE)
771 if (!tgt_is_mdt0(marker->cm_tgtname))
774 if (!strncmp(marker->cm_comment, "add mdc", 7) ||
775 !strncmp(marker->cm_comment, "add failnid", 11)) {
776 if (marker->cm_flags & CM_START) {
777 clli->cfg_flags = CFG_F_MARKER;
778 /* This hack is to differentiate the
779 * ADD_UUID is come from "add mdc" record
780 * or from "add failnid" record. */
781 if (!strncmp(marker->cm_comment,
783 clli->cfg_flags |= CFG_F_SKIP;
784 } else if (marker->cm_flags & CM_END) {
790 case LCFG_ADD_UUID: {
791 if (clli->cfg_flags == CFG_F_MARKER) {
792 rc = lustre_lwp_setup(lcfg, lsi);
793 /* XXX: process only the first nid as
794 * we don't need another instance of lwp */
795 clli->cfg_flags |= CFG_F_SKIP;
796 } else if (clli->cfg_flags == (CFG_F_MARKER | CFG_F_SKIP)) {
797 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
800 CERROR("%s: Fail to add uuid, rc:%d\n",
801 lsi->lsi_svname, rc);
805 case LCFG_ADD_CONN: {
806 if (is_mdc_for_mdt0(lustre_cfg_string(lcfg, 0)))
807 rc = lustre_lwp_add_conn(lcfg, lsi);
817 static int lustre_disconnect_lwp(struct super_block *sb)
819 struct lustre_sb_info *lsi = s2lsi(sb);
820 struct obd_device *lwp;
821 char *lwpname = NULL;
822 char *logname = NULL;
823 struct lustre_cfg *lcfg = NULL;
824 struct lustre_cfg_bufs *bufs = NULL;
825 struct config_llog_instance *cfg = NULL;
829 lwp = lustre_find_lwp(lsi, &lwpname, &logname);
830 if (IS_ERR(lwp) && PTR_ERR(lwp) != -ENOENT)
831 GOTO(out, rc = PTR_ERR(lwp));
833 LASSERT(lwpname != NULL);
834 LASSERT(logname != NULL);
838 GOTO(out, rc = -ENOMEM);
841 cfg->cfg_instance = sb;
842 rc = lustre_end_log(sb, logname, cfg);
844 CERROR("%s: Can't end config log %s.\n", lwpname, logname);
848 if (PTR_ERR(lwp) == -ENOENT) {
849 CDEBUG(D_CONFIG, "%s: lwp device wasn't started.\n",
856 GOTO(out, rc = -ENOMEM);
858 lustre_cfg_bufs_reset(bufs, lwp->obd_name);
859 lustre_cfg_bufs_set_string(bufs, 1, NULL);
860 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
862 GOTO(out, rc = -ENOMEM);
864 /* Disconnect import first. NULL is passed for the '@env', since
865 * it will not be used. */
866 rc = lwp->obd_lu_dev->ld_ops->ldo_process_config(NULL, lwp->obd_lu_dev,
870 lustre_cfg_free(lcfg);
876 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
878 OBD_FREE(logname, MTI_NAME_MAXLEN);
883 * Stop the lwp for an OST/MDT target.
885 static int lustre_stop_lwp(struct super_block *sb)
887 struct lustre_sb_info *lsi = s2lsi(sb);
888 struct obd_device *lwp = NULL;
889 char *lwpname = NULL;
893 lwp = lustre_find_lwp(lsi, &lwpname, NULL);
895 CDEBUG(PTR_ERR(lwp) == -ENOENT ? D_CONFIG : D_ERROR,
896 "%s: lwp wasn't started.\n", lsi->lsi_svname);
901 rc = class_manual_cleanup(lwp);
905 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
910 * Start the lwp(fsname-MDT0000-lwp-OSTxxxx) for an OST or MDT target,
911 * which would be used to establish connection from OST to MDT0.
913 static int lustre_start_lwp(struct super_block *sb)
915 struct lustre_sb_info *lsi = s2lsi(sb);
916 struct config_llog_instance *cfg = NULL;
917 struct obd_device *lwp;
918 char *lwpname = NULL;
919 char *logname = NULL;
923 lwp = lustre_find_lwp(lsi, &lwpname, &logname);
925 /* the lwp device already stared */
926 if (lwp && !IS_ERR(lwp))
929 if (PTR_ERR(lwp) != -ENOENT)
930 GOTO(out, rc = PTR_ERR(lwp));
932 LASSERT(lwpname != NULL);
933 LASSERT(logname != NULL);
937 GOTO(out, rc = -ENOMEM);
939 cfg->cfg_callback = client_lwp_config_process;
940 cfg->cfg_instance = sb;
942 rc = lustre_process_log(sb, logname, cfg);
945 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
947 OBD_FREE(logname, MTI_NAME_MAXLEN);
953 DEFINE_MUTEX(server_start_lock);
955 /* Stop MDS/OSS if nobody is using them */
956 static int server_stop_servers(int lsiflags)
958 struct obd_device *obd = NULL;
959 struct obd_type *type = NULL;
963 mutex_lock(&server_start_lock);
965 /* Either an MDT or an OST or neither */
966 /* if this was an MDT, and there are no more MDT's, clean up the MDS */
967 if (lsiflags & LDD_F_SV_TYPE_MDT) {
968 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
970 type = class_search_type(LUSTRE_MDT_NAME);
973 /* if this was an OST, and there are no more OST's, clean up the OSS */
974 if (lsiflags & LDD_F_SV_TYPE_OST) {
975 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
977 type = class_search_type(LUSTRE_OST_NAME);
980 if (obd != NULL && (type == NULL || type->typ_refcnt == 0)) {
982 /* obd_fail doesn't mean much on a server obd */
983 rc = class_manual_cleanup(obd);
986 mutex_unlock(&server_start_lock);
991 int server_mti_print(const char *title, struct mgs_target_info *mti)
993 PRINT_CMD(PRINT_MASK, "mti %s\n", title);
994 PRINT_CMD(PRINT_MASK, "server: %s\n", mti->mti_svname);
995 PRINT_CMD(PRINT_MASK, "fs: %s\n", mti->mti_fsname);
996 PRINT_CMD(PRINT_MASK, "uuid: %s\n", mti->mti_uuid);
997 PRINT_CMD(PRINT_MASK, "ver: %d flags: %#x\n",
998 mti->mti_config_ver, mti->mti_flags);
1001 EXPORT_SYMBOL(server_mti_print);
1003 /* Generate data for registration */
1004 static int server_lsi2mti(struct lustre_sb_info *lsi,
1005 struct mgs_target_info *mti)
1007 lnet_process_id_t id;
1012 if (!IS_SERVER(lsi))
1015 if (strlcpy(mti->mti_svname, lsi->lsi_svname, sizeof(mti->mti_svname))
1016 >= sizeof(mti->mti_svname))
1019 mti->mti_nid_count = 0;
1020 while (LNetGetId(i++, &id) != -ENOENT) {
1021 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
1024 /* server use --servicenode param, only allow specified
1025 * nids be registered */
1026 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) != 0 &&
1027 class_match_nid(lsi->lsi_lmd->lmd_params,
1028 PARAM_FAILNODE, id.nid) < 1)
1031 /* match specified network */
1032 if (!class_match_net(lsi->lsi_lmd->lmd_params,
1033 PARAM_NETWORK, LNET_NIDNET(id.nid)))
1036 mti->mti_nids[mti->mti_nid_count] = id.nid;
1037 mti->mti_nid_count++;
1038 if (mti->mti_nid_count >= MTI_NIDS_MAX) {
1039 CWARN("Only using first %d nids for %s\n",
1040 mti->mti_nid_count, mti->mti_svname);
1045 mti->mti_lustre_ver = LUSTRE_VERSION_CODE;
1046 mti->mti_config_ver = 0;
1048 rc = server_name2fsname(lsi->lsi_svname, mti->mti_fsname, NULL);
1052 rc = server_name2index(lsi->lsi_svname, &mti->mti_stripe_index, NULL);
1055 /* Orion requires index to be set */
1056 LASSERT(!(rc & LDD_F_NEED_INDEX));
1057 /* keep only LDD flags */
1058 mti->mti_flags = lsi->lsi_flags & LDD_F_MASK;
1059 if (mti->mti_flags & (LDD_F_WRITECONF | LDD_F_VIRGIN))
1060 mti->mti_flags |= LDD_F_UPDATE;
1061 cplen = strlcpy(mti->mti_params, lsi->lsi_lmd->lmd_params,
1062 sizeof(mti->mti_params));
1063 if (cplen >= sizeof(mti->mti_params))
1068 /* Register an old or new target with the MGS. If needed MGS will construct
1069 startup logs and assign index */
1070 static int server_register_target(struct lustre_sb_info *lsi)
1072 struct obd_device *mgc = lsi->lsi_mgc;
1073 struct mgs_target_info *mti = NULL;
1080 if (!IS_SERVER(lsi))
1087 rc = server_lsi2mti(lsi, mti);
1091 CDEBUG(D_MOUNT, "Registration %s, fs=%s, %s, index=%04x, flags=%#x\n",
1092 mti->mti_svname, mti->mti_fsname,
1093 libcfs_nid2str(mti->mti_nids[0]), mti->mti_stripe_index,
1096 /* if write_conf is true, the registration must succeed */
1097 writeconf = !!(lsi->lsi_flags & (LDD_F_NEED_INDEX | LDD_F_UPDATE));
1098 mti->mti_flags |= LDD_F_OPC_REG;
1100 /* Register the target */
1101 /* FIXME use mgc_process_config instead */
1102 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1103 sizeof(KEY_REGISTER_TARGET),
1104 KEY_REGISTER_TARGET,
1105 sizeof(*mti), mti, NULL);
1107 if (mti->mti_flags & LDD_F_ERROR) {
1108 LCONSOLE_ERROR_MSG(0x160,
1109 "%s: the MGS refuses to allow this server "
1110 "to start: rc = %d. Please see messages on "
1111 "the MGS.\n", lsi->lsi_svname, rc);
1112 } else if (writeconf) {
1113 LCONSOLE_ERROR_MSG(0x15f,
1114 "%s: cannot register this server with the MGS: "
1115 "rc = %d. Is the MGS running?\n",
1116 lsi->lsi_svname, rc);
1118 CERROR("%s: error registering with the MGS: rc = %d "
1119 "(not fatal)\n", lsi->lsi_svname, rc);
1120 /* reset the error code for non-fatal error. */
1133 * Notify the MGS that this target is ready.
1134 * Used by IR - if the MGS receives this message, it will notify clients.
1136 static int server_notify_target(struct super_block *sb, struct obd_device *obd)
1138 struct lustre_sb_info *lsi = s2lsi(sb);
1139 struct obd_device *mgc = lsi->lsi_mgc;
1140 struct mgs_target_info *mti = NULL;
1146 if (!(IS_SERVER(lsi)))
1152 rc = server_lsi2mti(lsi, mti);
1156 mti->mti_instance = obd->u.obt.obt_instance;
1157 mti->mti_flags |= LDD_F_OPC_READY;
1159 /* FIXME use mgc_process_config instead */
1160 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1161 sizeof(KEY_REGISTER_TARGET),
1162 KEY_REGISTER_TARGET,
1163 sizeof(*mti), mti, NULL);
1165 /* Imperative recovery: if the mgs informs us to use IR? */
1166 if (!rc && !(mti->mti_flags & LDD_F_ERROR) &&
1167 (mti->mti_flags & LDD_F_IR_CAPABLE))
1168 lsi->lsi_flags |= LDD_F_IR_CAPABLE;
1177 /** Start server targets: MDTs and OSTs
1179 static int server_start_targets(struct super_block *sb, struct vfsmount *mnt)
1181 struct obd_device *obd;
1182 struct lustre_sb_info *lsi = s2lsi(sb);
1183 struct config_llog_instance cfg;
1185 struct lu_device *dev;
1189 CDEBUG(D_MOUNT, "starting target %s\n", lsi->lsi_svname);
1192 /* make sure the MDS is started */
1193 mutex_lock(&server_start_lock);
1194 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
1196 rc = lustre_start_simple(LUSTRE_MDS_OBDNAME,
1198 LUSTRE_MDS_OBDNAME"_uuid",
1201 mutex_unlock(&server_start_lock);
1202 CERROR("failed to start MDS: %d\n", rc);
1206 mutex_unlock(&server_start_lock);
1209 /* If we're an OST, make sure the global OSS is running */
1211 /* make sure OSS is started */
1212 mutex_lock(&server_start_lock);
1213 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
1215 rc = lustre_start_simple(LUSTRE_OSS_OBDNAME,
1217 LUSTRE_OSS_OBDNAME"_uuid",
1220 mutex_unlock(&server_start_lock);
1221 CERROR("failed to start OSS: %d\n", rc);
1225 mutex_unlock(&server_start_lock);
1228 /* Set the mgc fs to our server disk. This allows the MGC to
1229 * read and write configs locally, in case it can't talk to the MGS. */
1230 if (lsi->lsi_srv_mnt) {
1231 rc = server_mgc_set_fs(lsi->lsi_mgc, sb);
1233 GOTO(out_stop_service, rc);
1236 /* Register with MGS */
1237 rc = server_register_target(lsi);
1241 /* Let the target look up the mount using the target's name
1242 (we can't pass the sb or mnt through class_process_config.) */
1243 rc = server_register_mount(lsi->lsi_svname, sb, mnt);
1247 /* Start targets using the llog named for the target */
1248 memset(&cfg, 0, sizeof(cfg));
1249 cfg.cfg_callback = class_config_llog_handler;
1250 rc = lustre_process_log(sb, lsi->lsi_svname, &cfg);
1252 CERROR("failed to start server %s: %d\n",
1253 lsi->lsi_svname, rc);
1254 /* Do NOT call server_deregister_mount() here. This makes it
1255 * impossible to find mount later in cleanup time and leaves
1256 * @lsi and othder stuff leaked. -umka */
1260 obd = class_name2obd(lsi->lsi_svname);
1262 CERROR("no server named %s was started\n", lsi->lsi_svname);
1263 GOTO(out_mgc, rc = -ENXIO);
1266 if (IS_OST(lsi) || IS_MDT(lsi)) {
1267 rc = lustre_start_lwp(sb);
1269 CERROR("%s: failed to start LWP: %d\n",
1270 lsi->lsi_svname, rc);
1275 server_notify_target(sb, obd);
1277 /* calculate recovery timeout, do it after lustre_process_log */
1278 server_calc_timeout(lsi, obd);
1280 /* log has been fully processed */
1281 obd_notify(obd, NULL, OBD_NOTIFY_CONFIG, (void *)CONFIG_LOG);
1283 /* log has been fully processed, let clients connect */
1284 dev = obd->obd_lu_dev;
1285 if (dev && dev->ld_ops->ldo_prepare) {
1286 rc = lu_env_init(&env, dev->ld_type->ldt_ctx_tags);
1288 struct lu_context session_ctx;
1290 lu_context_init(&session_ctx, LCT_SESSION);
1291 session_ctx.lc_thread = NULL;
1292 lu_context_enter(&session_ctx);
1293 env.le_ses = &session_ctx;
1295 rc = dev->ld_ops->ldo_prepare(&env, NULL, dev);
1298 lu_context_exit(&session_ctx);
1299 lu_context_fini(&session_ctx);
1303 /* abort recovery only on the complete stack:
1304 * many devices can be involved */
1305 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_ABORT_RECOV) &&
1306 (OBP(obd, iocontrol))) {
1307 obd_iocontrol(OBD_IOC_ABORT_RECOVERY, obd->obd_self_export, 0,
1312 /* Release the mgc fs for others to use */
1313 if (lsi->lsi_srv_mnt)
1314 server_mgc_clear_fs(lsi->lsi_mgc);
1318 server_stop_servers(lsi->lsi_flags);
1323 static int lsi_prepare(struct lustre_sb_info *lsi)
1330 LASSERT(lsi->lsi_lmd);
1332 /* The server name is given as a mount line option */
1333 if (lsi->lsi_lmd->lmd_profile == NULL) {
1334 LCONSOLE_ERROR("Can't determine server name\n");
1338 if (strlen(lsi->lsi_lmd->lmd_profile) >= sizeof(lsi->lsi_svname))
1339 RETURN(-ENAMETOOLONG);
1341 strcpy(lsi->lsi_svname, lsi->lsi_lmd->lmd_profile);
1343 /* Determine osd type */
1344 if (lsi->lsi_lmd->lmd_osd_type != NULL) {
1345 if (strlen(lsi->lsi_lmd->lmd_osd_type) >=
1346 sizeof(lsi->lsi_osd_type))
1347 RETURN(-ENAMETOOLONG);
1349 strcpy(lsi->lsi_osd_type, lsi->lsi_lmd->lmd_osd_type);
1351 strcpy(lsi->lsi_osd_type, LUSTRE_OSD_LDISKFS_NAME);
1354 /* XXX: a temp. solution for components using fsfilt
1355 * to be removed in one of the subsequent patches */
1356 if (!strcmp(lsi->lsi_lmd->lmd_osd_type, "osd-ldiskfs"))
1357 strcpy(lsi->lsi_fstype, "ldiskfs");
1359 strcpy(lsi->lsi_fstype, lsi->lsi_lmd->lmd_osd_type);
1361 /* Determine server type */
1362 rc = server_name2index(lsi->lsi_svname, &index, NULL);
1364 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) {
1365 /* Assume we're a bare MGS */
1367 lsi->lsi_lmd->lmd_flags |= LMD_FLG_NOSVC;
1369 LCONSOLE_ERROR("Can't determine server type of '%s'\n",
1374 lsi->lsi_flags |= rc;
1376 /* Add mount line flags that used to be in ldd:
1377 * writeconf, mgs, anything else?
1379 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_WRITECONF) ?
1380 LDD_F_WRITECONF : 0;
1381 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_VIRGIN) ?
1383 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_UPDATE) ?
1385 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) ?
1386 LDD_F_SV_TYPE_MGS : 0;
1387 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) ?
1388 LDD_F_NO_PRIMNODE : 0;
1393 /*************** server mount ******************/
1395 /** Start the shutdown of servers at umount.
1397 static void server_put_super(struct super_block *sb)
1399 struct lustre_sb_info *lsi = s2lsi(sb);
1400 struct obd_device *obd;
1401 char *tmpname, *extraname = NULL;
1403 int lsiflags = lsi->lsi_flags;
1406 LASSERT(IS_SERVER(lsi));
1408 tmpname_sz = strlen(lsi->lsi_svname) + 1;
1409 OBD_ALLOC(tmpname, tmpname_sz);
1410 memcpy(tmpname, lsi->lsi_svname, tmpname_sz);
1411 CDEBUG(D_MOUNT, "server put_super %s\n", tmpname);
1412 if (IS_MDT(lsi) && (lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC))
1413 snprintf(tmpname, tmpname_sz, "MGS");
1415 /* disconnect the lwp first to drain off the inflight request */
1416 if (IS_OST(lsi) || IS_MDT(lsi)) {
1419 rc = lustre_disconnect_lwp(sb);
1420 if (rc && rc != ETIMEDOUT)
1421 CERROR("%s: failed to disconnect lwp. (rc=%d)\n",
1425 /* Stop the target */
1426 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1427 (IS_MDT(lsi) || IS_OST(lsi))) {
1428 struct lustre_profile *lprof = NULL;
1430 /* tell the mgc to drop the config log */
1431 lustre_end_log(sb, lsi->lsi_svname, NULL);
1433 /* COMPAT_146 - profile may get deleted in mgc_cleanup.
1434 If there are any setup/cleanup errors, save the lov
1435 name for safety cleanup later. */
1436 lprof = class_get_profile(lsi->lsi_svname);
1437 if (lprof && lprof->lp_dt) {
1438 OBD_ALLOC(extraname, strlen(lprof->lp_dt) + 1);
1439 strcpy(extraname, lprof->lp_dt);
1442 obd = class_name2obd(lsi->lsi_svname);
1444 CDEBUG(D_MOUNT, "stopping %s\n", obd->obd_name);
1445 if (lsiflags & LSI_UMOUNT_FAILOVER)
1447 /* We can't seem to give an error return code
1448 * to .put_super, so we better make sure we clean up! */
1450 class_manual_cleanup(obd);
1452 CERROR("no obd %s\n", lsi->lsi_svname);
1453 server_deregister_mount(lsi->lsi_svname);
1457 /* If they wanted the mgs to stop separately from the mdt, they
1458 should have put it on a different device. */
1460 /* if MDS start with --nomgs, don't stop MGS then */
1461 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS))
1462 server_stop_mgs(sb);
1465 if (IS_OST(lsi) || IS_MDT(lsi)) {
1466 if (lustre_stop_lwp(sb) < 0)
1467 CERROR("%s: failed to stop lwp!\n", tmpname);
1470 /* Clean the mgc and sb */
1471 lustre_common_put_super(sb);
1473 /* wait till all in-progress cleanups are done
1474 * specifically we're interested in ofd cleanup
1476 obd_zombie_barrier();
1478 /* Stop the servers (MDS, OSS) if no longer needed. We must wait
1479 until the target is really gone so that our type refcount check
1481 server_stop_servers(lsiflags);
1483 /* In case of startup or cleanup err, stop related obds */
1485 obd = class_name2obd(extraname);
1487 CWARN("Cleaning orphaned obd %s\n", extraname);
1489 class_manual_cleanup(obd);
1491 OBD_FREE(extraname, strlen(extraname) + 1);
1494 LCONSOLE_WARN("server umount %s complete\n", tmpname);
1495 OBD_FREE(tmpname, tmpname_sz);
1499 /** Called only for 'umount -f'
1501 static void server_umount_begin(struct super_block *sb)
1503 struct lustre_sb_info *lsi = s2lsi(sb);
1506 CDEBUG(D_MOUNT, "umount -f\n");
1507 /* umount = failover
1509 no third way to do non-force, non-failover */
1510 lsi->lsi_flags &= ~LSI_UMOUNT_FAILOVER;
1514 static int server_statfs(struct dentry *dentry, struct kstatfs *buf)
1516 struct super_block *sb = dentry->d_sb;
1517 struct lustre_sb_info *lsi = s2lsi(sb);
1518 struct obd_statfs statfs;
1522 if (lsi->lsi_dt_dev) {
1523 rc = dt_statfs(NULL, lsi->lsi_dt_dev, &statfs);
1525 statfs_unpack(buf, &statfs);
1526 buf->f_type = sb->s_magic;
1532 buf->f_type = sb->s_magic;
1533 buf->f_bsize = sb->s_blocksize;
1539 buf->f_namelen = NAME_MAX;
1543 /** The operations we support directly on the superblock:
1544 * mount, umount, and df.
1546 static struct super_operations server_ops = {
1547 .put_super = server_put_super,
1548 .umount_begin = server_umount_begin, /* umount -f */
1549 .statfs = server_statfs,
1552 #define log2(n) ffz(~(n))
1553 #define LUSTRE_SUPER_MAGIC 0x0BD00BD1
1555 static int server_fill_super_common(struct super_block *sb)
1557 struct inode *root = 0;
1560 CDEBUG(D_MOUNT, "Server sb, dev=%d\n", (int)sb->s_dev);
1562 sb->s_blocksize = 4096;
1563 sb->s_blocksize_bits = log2(sb->s_blocksize);
1564 sb->s_magic = LUSTRE_SUPER_MAGIC;
1565 sb->s_maxbytes = 0; /* we don't allow file IO on server mountpoints */
1566 sb->s_flags |= MS_RDONLY;
1567 sb->s_op = &server_ops;
1569 root = new_inode(sb);
1571 CERROR("Can't make root inode\n");
1575 /* returns -EIO for every operation */
1576 /* make_bad_inode(root); -- badness - can't umount */
1577 /* apparently we need to be a directory for the mount to finish */
1578 root->i_mode = S_IFDIR;
1580 sb->s_root = d_make_root(root);
1582 CERROR("%s: can't make root dentry\n", sb->s_id);
1589 static int osd_start(struct lustre_sb_info *lsi, unsigned long mflags)
1591 struct lustre_mount_data *lmd = lsi->lsi_lmd;
1592 struct obd_device *obd;
1593 struct dt_device_param p;
1599 "Attempting to start %s, type=%s, lsifl=%x, mountfl=%lx\n",
1600 lsi->lsi_svname, lsi->lsi_osd_type, lsi->lsi_flags, mflags);
1602 sprintf(lsi->lsi_osd_obdname, "%s-osd", lsi->lsi_svname);
1603 strcpy(lsi->lsi_osd_uuid, lsi->lsi_osd_obdname);
1604 strcat(lsi->lsi_osd_uuid, "_UUID");
1605 sprintf(flagstr, "%lu:%lu", mflags, (unsigned long) lmd->lmd_flags);
1607 obd = class_name2obd(lsi->lsi_osd_obdname);
1609 rc = lustre_start_simple(lsi->lsi_osd_obdname,
1611 lsi->lsi_osd_uuid, lmd->lmd_dev,
1612 flagstr, lsi->lsi_lmd->lmd_opts,
1616 obd = class_name2obd(lsi->lsi_osd_obdname);
1620 rc = obd_connect(NULL, &lsi->lsi_osd_exp,
1621 obd, &obd->obd_uuid, NULL, NULL);
1624 class_manual_cleanup(obd);
1625 lsi->lsi_dt_dev = NULL;
1628 /* XXX: to keep support old components relying on lsi_srv_mnt
1629 * we get this info from OSD just started */
1630 LASSERT(obd->obd_lu_dev);
1631 lsi->lsi_dt_dev = lu2dt_dev(obd->obd_lu_dev);
1632 LASSERT(lsi->lsi_dt_dev);
1634 dt_conf_get(NULL, lsi->lsi_dt_dev, &p);
1636 lsi->lsi_srv_mnt = p.ddp_mnt;
1642 /** Fill in the superblock info for a Lustre server.
1643 * Mount the device with the correct options.
1644 * Read the on-disk config file.
1645 * Start the services.
1647 int server_fill_super(struct super_block *sb)
1649 struct lustre_sb_info *lsi = s2lsi(sb);
1653 rc = lsi_prepare(lsi);
1657 /* Start low level OSD */
1658 rc = osd_start(lsi, sb->s_flags);
1660 CERROR("Unable to start osd on %s: %d\n",
1661 lsi->lsi_lmd->lmd_dev, rc);
1666 CDEBUG(D_MOUNT, "Found service %s on device %s\n",
1667 lsi->lsi_svname, lsi->lsi_lmd->lmd_dev);
1669 if (class_name2obd(lsi->lsi_svname)) {
1670 LCONSOLE_ERROR_MSG(0x161, "The target named %s is already "
1671 "running. Double-mount may have compromised"
1672 " the disk journal.\n",
1678 /* Start MGS before MGC */
1679 if (IS_MGS(lsi) && !(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS)) {
1680 rc = server_start_mgs(sb);
1685 /* Start MGC before servers */
1686 rc = lustre_start_mgc(sb);
1690 /* Set up all obd devices for service */
1691 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1692 (IS_OST(lsi) || IS_MDT(lsi))) {
1693 rc = server_start_targets(sb, lsi->lsi_srv_mnt);
1695 CERROR("Unable to start targets: %d\n", rc);
1698 /* FIXME overmount client here, or can we just start a
1699 * client log and client_fill_super on this sb? We
1700 * need to make sure server_put_super gets called too
1701 * - ll_put_super calls lustre_common_put_super; check
1702 * there for LSI_SERVER flag, call s_p_s if so.
1704 * Probably should start client from new thread so we
1705 * can return. Client will not finish until all
1706 * servers are connected. Note - MGS-only server does
1707 * NOT get a client, since there is no lustre fs
1708 * associated - the MGS is for all lustre fs's */
1711 rc = server_fill_super_common(sb);
1717 /* We jump here in case of failure while starting targets or MGS.
1718 * In this case we can't just put @mnt and have to do real cleanup
1719 * with stoping targets, etc. */
1720 server_put_super(sb);
1725 * Calculate timeout value for a target.
1727 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd)
1729 struct lustre_mount_data *lmd;
1733 bool has_ir = !!(lsi->lsi_flags & LDD_F_IR_CAPABLE);
1734 int min = OBD_RECOVERY_TIME_MIN;
1736 LASSERT(IS_SERVER(lsi));
1740 soft = lmd->lmd_recovery_time_soft;
1741 hard = lmd->lmd_recovery_time_hard;
1742 has_ir = has_ir && !(lmd->lmd_flags & LMD_FLG_NOIR);
1743 obd->obd_no_ir = !has_ir;
1747 soft = OBD_RECOVERY_TIME_SOFT;
1749 hard = OBD_RECOVERY_TIME_HARD;
1751 /* target may have ir_factor configured. */
1752 factor = OBD_IR_FACTOR_DEFAULT;
1753 if (obd->obd_recovery_ir_factor)
1754 factor = obd->obd_recovery_ir_factor;
1757 int new_soft = soft;
1758 int new_hard = hard;
1760 /* adjust timeout value by imperative recovery */
1762 new_soft = (soft * factor) / OBD_IR_FACTOR_MAX;
1763 new_hard = (hard * factor) / OBD_IR_FACTOR_MAX;
1765 /* make sure the timeout is not too short */
1766 new_soft = max(min, new_soft);
1767 new_hard = max(new_soft, new_hard);
1769 LCONSOLE_INFO("%s: Imperative Recovery enabled, recovery "
1770 "window shrunk from %d-%d down to %d-%d\n",
1771 obd->obd_name, soft, hard, new_soft, new_hard);
1778 obd->obd_recovery_timeout = max(obd->obd_recovery_timeout, soft);
1779 obd->obd_recovery_time_hard = hard;
1780 obd->obd_recovery_ir_factor = factor;
1782 EXPORT_SYMBOL(server_calc_timeout);