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 <obd_class.h>
52 #include <lustre/lustre_user.h>
53 #include <linux/version.h>
54 #include <lustre_log.h>
55 #include <lustre_disk.h>
56 #include <lustre_param.h>
57 #ifdef HAVE_KERNEL_LOCKED
58 #include <linux/smp_lock.h>
60 #ifdef HAVE_SELINUX_IS_ENABLED
61 #include <linux/selinux.h>
64 /*********** mount lookup *********/
66 DEFINE_MUTEX(lustre_mount_info_lock);
67 static CFS_LIST_HEAD(server_mount_info_list);
69 static struct lustre_mount_info *server_find_mount(const char *name)
72 struct lustre_mount_info *lmi;
75 cfs_list_for_each(tmp, &server_mount_info_list) {
76 lmi = cfs_list_entry(tmp, struct lustre_mount_info,
78 if (strcmp(name, lmi->lmi_name) == 0)
84 /* we must register an obd for a mount before we call the setup routine.
85 *_setup will call lustre_get_mount to get the mnt struct
86 by obd_name, since we can't pass the pointer to setup. */
87 static int server_register_mount(const char *name, struct super_block *sb)
89 struct lustre_mount_info *lmi;
95 OBD_ALLOC(lmi, sizeof(*lmi));
98 OBD_ALLOC(name_cp, strlen(name) + 1);
100 OBD_FREE(lmi, sizeof(*lmi));
103 strcpy(name_cp, name);
105 mutex_lock(&lustre_mount_info_lock);
107 if (server_find_mount(name)) {
108 mutex_unlock(&lustre_mount_info_lock);
109 OBD_FREE(lmi, sizeof(*lmi));
110 OBD_FREE(name_cp, strlen(name) + 1);
111 CERROR("Already registered %s\n", name);
114 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, "register mount %p from %s\n", sb, 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, "deregister mount %p from %s\n", lmi->lmi_sb, 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 mount %p from %s, refs=%d\n", lmi->lmi_sb,
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)
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 mount %p from %s, refs=%d\n",
213 lmi->lmi_sb, name, cfs_atomic_read(&lsi->lsi_mounts));
215 if (lustre_put_lsi(lmi->lmi_sb))
216 CDEBUG(D_MOUNT, "Last put of mount %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 lustre_mount_info *lmi;
242 /* It is impossible to have more than 1 MGS per node, since
243 MGC wouldn't know which to connect to */
244 lmi = server_find_mount(LUSTRE_MGS_OBDNAME);
246 lsi = s2lsi(lmi->lmi_sb);
247 LCONSOLE_ERROR_MSG(0x15d, "The MGS service was already started"
252 CDEBUG(D_CONFIG, "Start MGS service %s\n", LUSTRE_MGS_OBDNAME);
254 rc = server_register_mount(LUSTRE_MGS_OBDNAME, sb);
257 rc = lustre_start_simple(LUSTRE_MGS_OBDNAME, LUSTRE_MGS_NAME,
258 LUSTRE_MGS_OBDNAME, 0, 0,
259 lsi->lsi_osd_obdname, 0);
260 /* server_deregister_mount() is not called previously, for lsi
261 * and other stuff can't be freed cleanly when mgs calls
262 * server_put_mount() in error handling case (see b=17758),
263 * this problem is caused by a bug in mgs_init0, which forgot
264 * calling server_put_mount in error case. */
267 server_deregister_mount(LUSTRE_MGS_OBDNAME);
271 LCONSOLE_ERROR_MSG(0x15e, "Failed to start MGS '%s' (%d). "
272 "Is the 'mgs' module loaded?\n",
273 LUSTRE_MGS_OBDNAME, rc);
277 static int server_stop_mgs(struct super_block *sb)
279 struct obd_device *obd;
283 CDEBUG(D_MOUNT, "Stop MGS service %s\n", LUSTRE_MGS_OBDNAME);
285 /* There better be only one MGS */
286 obd = class_name2obd(LUSTRE_MGS_OBDNAME);
288 CDEBUG(D_CONFIG, "mgs %s not running\n", LUSTRE_MGS_OBDNAME);
292 /* The MGS should always stop when we say so */
294 rc = class_manual_cleanup(obd);
298 /* Since there's only one mgc per node, we have to change it's fs to get
299 access to the right disk. */
300 static int server_mgc_set_fs(struct obd_device *mgc, struct super_block *sb)
302 struct lustre_sb_info *lsi = s2lsi(sb);
306 CDEBUG(D_MOUNT, "Set mgc disk for %s\n", lsi->lsi_lmd->lmd_dev);
308 /* cl_mgc_sem in mgc insures we sleep if the mgc_fs is busy */
309 rc = obd_set_info_async(NULL, mgc->obd_self_export,
310 sizeof(KEY_SET_FS), KEY_SET_FS,
311 sizeof(*sb), sb, NULL);
313 CERROR("can't set_fs %d\n", rc);
318 static int server_mgc_clear_fs(struct obd_device *mgc)
323 CDEBUG(D_MOUNT, "Unassign mgc disk\n");
325 rc = obd_set_info_async(NULL, mgc->obd_self_export,
326 sizeof(KEY_CLEAR_FS), KEY_CLEAR_FS,
331 static int is_mdc_device(const char *devname)
335 ptr = strrchr(devname, '-');
336 if (ptr != NULL && strcmp(ptr, "-mdc") == 0)
342 static inline int tgt_is_mdt0(const char *tgtname)
347 type = server_name2index(tgtname, &idx, NULL);
348 if (type != LDD_F_SV_TYPE_MDT)
354 static inline int is_mdc_for_mdt0(const char *devname)
358 if (!is_mdc_device(devname))
361 ptr = strrchr(devname, '-');
366 if (tgt_is_mdt0(devname)) {
375 * Convert OST/MDT name(fsname-OSTxxxx) to a lwp name
376 * (fsname-MDT0000-lwp-OSTxxxx)
378 int tgt_name2lwpname(const char *svname, char *lwpname)
385 OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
389 rc = server_name2fsname(svname, fsname, &tgt);
391 CERROR("%s: failed to get fsname from svname. %d\n",
396 if (*tgt != '-' && *tgt != ':') {
397 CERROR("%s: invalid svname name!\n", svname);
398 GOTO(cleanup, rc = -EINVAL);
402 if (strncmp(tgt, "OST", 3) != 0 && strncmp(tgt, "MDT", 3) != 0) {
403 CERROR("%s is not an OST or MDT target!\n", svname);
404 GOTO(cleanup, rc = -EINVAL);
406 sprintf(lwpname, "%s-MDT0000-%s-%s", fsname, LUSTRE_LWP_NAME, tgt);
409 OBD_FREE(fsname, MTI_NAME_MAXLEN);
412 EXPORT_SYMBOL(tgt_name2lwpname);
414 static CFS_LIST_HEAD(lwp_register_list);
415 DEFINE_MUTEX(lwp_register_list_lock);
417 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
418 register_lwp_cb cb_func, void *cb_data)
420 struct obd_device *lwp;
421 struct lwp_register_item *lri;
424 LASSERTF(strlen(lwpname) < MTI_NAME_MAXLEN, "lwpname is too long %s\n",
426 LASSERT(exp != NULL && *exp == NULL);
432 mutex_lock(&lwp_register_list_lock);
434 lwp = class_name2obd(lwpname);
435 if (lwp != NULL && lwp->obd_set_up == 1) {
436 struct obd_uuid *uuid;
440 mutex_unlock(&lwp_register_list_lock);
444 memcpy(uuid->uuid, lwpname, strlen(lwpname));
445 *exp = cfs_hash_lookup(lwp->obd_uuid_hash, uuid);
449 memcpy(lri->lri_name, lwpname, strlen(lwpname));
451 lri->lri_cb_func = cb_func;
452 lri->lri_cb_data = cb_data;
453 CFS_INIT_LIST_HEAD(&lri->lri_list);
454 cfs_list_add(&lri->lri_list, &lwp_register_list);
456 if (*exp != NULL && cb_func != NULL)
459 mutex_unlock(&lwp_register_list_lock);
462 EXPORT_SYMBOL(lustre_register_lwp_item);
464 void lustre_deregister_lwp_item(struct obd_export **exp)
466 struct lwp_register_item *lri, *tmp;
468 mutex_lock(&lwp_register_list_lock);
469 cfs_list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) {
470 if (exp == lri->lri_exp) {
472 class_export_put(*exp);
473 cfs_list_del(&lri->lri_list);
478 mutex_unlock(&lwp_register_list_lock);
480 EXPORT_SYMBOL(lustre_deregister_lwp_item);
482 static void lustre_notify_lwp_list(struct obd_export *exp)
484 struct lwp_register_item *lri, *tmp;
485 LASSERT(exp != NULL);
487 mutex_lock(&lwp_register_list_lock);
488 cfs_list_for_each_entry_safe(lri, tmp, &lwp_register_list, lri_list) {
489 if (strcmp(exp->exp_obd->obd_name, lri->lri_name))
491 if (*lri->lri_exp != NULL)
493 *lri->lri_exp = class_export_get(exp);
494 if (lri->lri_cb_func != NULL)
495 lri->lri_cb_func(lri->lri_cb_data);
497 mutex_unlock(&lwp_register_list_lock);
500 static int lustre_lwp_connect(struct obd_device *lwp)
503 struct lu_context session_ctx;
504 struct obd_export *exp;
505 struct obd_uuid *uuid = NULL;
506 struct obd_connect_data *data = NULL;
510 /* log has been fully processed, let clients connect */
511 rc = lu_env_init(&env, lwp->obd_lu_dev->ld_type->ldt_ctx_tags);
515 lu_context_init(&session_ctx, LCT_SERVER_SESSION);
516 session_ctx.lc_thread = NULL;
517 lu_context_enter(&session_ctx);
518 env.le_ses = &session_ctx;
522 GOTO(out, rc = -ENOMEM);
524 data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX;
525 data->ocd_version = LUSTRE_VERSION_CODE;
526 data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS | OBD_CONNECT_FID |
527 OBD_CONNECT_AT | OBD_CONNECT_LRU_RESIZE |
528 OBD_CONNECT_FULL20 | OBD_CONNECT_LVB_TYPE |
529 OBD_CONNECT_LIGHTWEIGHT;
532 GOTO(out, rc = -ENOMEM);
534 if (strlen(lwp->obd_name) > sizeof(uuid->uuid)) {
535 CERROR("%s: Too long lwp name %s, max_size is %d\n",
536 lwp->obd_name, lwp->obd_name, (int)sizeof(uuid->uuid));
537 GOTO(out, rc = -EINVAL);
540 /* Use lwp name as the uuid, so we find the export by lwp name later */
541 memcpy(uuid->uuid, lwp->obd_name, strlen(lwp->obd_name));
542 rc = obd_connect(&env, &exp, lwp, uuid, data, NULL);
544 CERROR("%s: connect failed: rc = %d\n", lwp->obd_name, rc);
546 lustre_notify_lwp_list(exp);
555 lu_context_exit(&session_ctx);
556 lu_context_fini(&session_ctx);
562 * lwp is used by slaves (Non-MDT0 targets) to manage the connection
565 static int lustre_lwp_setup(struct lustre_cfg *lcfg, struct lustre_sb_info *lsi)
567 struct obd_device *obd;
568 char *lwpname = NULL;
569 char *lwpuuid = NULL;
573 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
576 CERROR("%s: Can't add uuid: rc =%d\n", lsi->lsi_svname, rc);
580 OBD_ALLOC(lwpname, MTI_NAME_MAXLEN);
582 GOTO(out, rc = -ENOMEM);
584 rc = tgt_name2lwpname(lsi->lsi_svname, lwpname);
586 CERROR("%s: failed to generate lwp name. %d\n",
587 lsi->lsi_svname, rc);
591 OBD_ALLOC(lwpuuid, MTI_NAME_MAXLEN);
593 GOTO(out, rc = -ENOMEM);
595 sprintf(lwpuuid, "%s_UUID", lwpname);
596 rc = lustre_start_simple(lwpname, LUSTRE_LWP_NAME,
597 lwpuuid, lustre_cfg_string(lcfg, 1),
600 CERROR("%s: setup up failed: rc %d\n", lwpname, rc);
604 obd = class_name2obd(lwpname);
605 LASSERT(obd != NULL);
607 rc = lustre_lwp_connect(obd);
609 CERROR("%s: connect failed: rc = %d\n", lwpname, rc);
612 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
614 OBD_FREE(lwpuuid, MTI_NAME_MAXLEN);
619 /* the caller is responsible for memory free */
620 static struct obd_device *lustre_find_lwp(struct lustre_sb_info *lsi,
621 char **lwpname, char **logname)
623 struct obd_device *lwp;
627 LASSERT(lwpname != NULL);
628 LASSERT(IS_OST(lsi) || IS_MDT(lsi));
630 OBD_ALLOC(*lwpname, MTI_NAME_MAXLEN);
631 if (*lwpname == NULL)
632 RETURN(ERR_PTR(-ENOMEM));
634 if (logname != NULL) {
635 OBD_ALLOC(*logname, MTI_NAME_MAXLEN);
636 if (*logname == NULL)
637 GOTO(out, rc = -ENOMEM);
638 rc = server_name2fsname(lsi->lsi_svname, *lwpname, NULL);
640 CERROR("%s: failed to get fsname from svname. %d\n",
641 lsi->lsi_svname, rc);
642 GOTO(out, rc = -EINVAL);
644 sprintf(*logname, "%s-client", *lwpname);
647 rc = tgt_name2lwpname(lsi->lsi_svname, *lwpname);
649 CERROR("%s: failed to generate lwp name. %d\n",
650 lsi->lsi_svname, rc);
651 GOTO(out, rc = -EINVAL);
654 lwp = class_name2obd(*lwpname);
658 if (*lwpname != NULL) {
659 OBD_FREE(*lwpname, MTI_NAME_MAXLEN);
662 if (logname != NULL && *logname != NULL) {
663 OBD_FREE(*logname, MTI_NAME_MAXLEN);
669 RETURN(lwp != NULL ? lwp : ERR_PTR(-ENOENT));
672 static int lustre_lwp_add_conn(struct lustre_cfg *cfg,
673 struct lustre_sb_info *lsi)
675 struct lustre_cfg_bufs *bufs = NULL;
676 struct lustre_cfg *lcfg = NULL;
677 char *lwpname = NULL;
678 struct obd_device *lwp;
682 lwp = lustre_find_lwp(lsi, &lwpname, NULL);
684 CERROR("%s: can't find lwp device.\n", lsi->lsi_svname);
685 GOTO(out, rc = PTR_ERR(lwp));
687 LASSERT(lwpname != NULL);
691 GOTO(out, rc = -ENOMEM);
693 lustre_cfg_bufs_reset(bufs, lwpname);
694 lustre_cfg_bufs_set_string(bufs, 1,
695 lustre_cfg_string(cfg, 1));
697 lcfg = lustre_cfg_new(LCFG_ADD_CONN, bufs);
699 rc = class_add_conn(lwp, lcfg);
701 CERROR("%s: can't add conn: rc = %d\n", lwpname, rc);
707 lustre_cfg_free(lcfg);
709 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
714 * Retrieve MDT nids from the client log, then start the lwp device.
715 * there are only two scenarios which would include mdt nid.
717 * marker 5 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add mdc' xxx-
718 * add_uuid nid=192.168.122.162@tcp(0x20000c0a87aa2) 0: 1:192.168.122.162@tcp
719 * attach 0:lustre-MDT0000-mdc 1:mdc 2:lustre-clilmv_UUID
720 * setup 0:lustre-MDT0000-mdc 1:lustre-MDT0000_UUID 2:192.168.122.162@tcp
721 * add_uuid nid=192.168.172.1@tcp(0x20000c0a8ac01) 0: 1:192.168.172.1@tcp
722 * add_conn 0:lustre-MDT0000-mdc 1:192.168.172.1@tcp
723 * modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID xxxx
724 * marker 5 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add mdc' xxxx-
726 * marker 7 (flags=0x01, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx-
727 * add_uuid nid=192.168.122.2@tcp(0x20000c0a87a02) 0: 1:192.168.122.2@tcp
728 * add_conn 0:lustre-MDT0000-mdc 1:192.168.122.2@tcp
729 * marker 7 (flags=0x02, v2.1.54.0) lustre-MDT0000 'add failnid' xxxx-
731 static int client_lwp_config_process(const struct lu_env *env,
732 struct llog_handle *handle,
733 struct llog_rec_hdr *rec, void *data)
735 struct config_llog_instance *clli = data;
736 int cfg_len = rec->lrh_len;
737 char *cfg_buf = (char *) (rec + 1);
738 struct lustre_cfg *lcfg = NULL;
739 struct lustre_sb_info *lsi;
740 int rc = 0, swab = 0;
743 if (rec->lrh_type != OBD_CFG_REC) {
744 CERROR("Unknown llog record type %#x encountered\n",
749 LASSERT(clli->cfg_sb != NULL);
750 lsi = s2lsi(clli->cfg_sb);
752 lcfg = (struct lustre_cfg *)cfg_buf;
753 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
754 lustre_swab_lustre_cfg(lcfg);
758 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
762 switch (lcfg->lcfg_command) {
764 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
766 lustre_swab_cfg_marker(marker, swab,
767 LUSTRE_CFG_BUFLEN(lcfg, 1));
768 if (marker->cm_flags & CM_SKIP ||
769 marker->cm_flags & CM_EXCLUDE)
772 if (!tgt_is_mdt0(marker->cm_tgtname))
775 if (!strncmp(marker->cm_comment, "add mdc", 7) ||
776 !strncmp(marker->cm_comment, "add failnid", 11)) {
777 if (marker->cm_flags & CM_START) {
778 clli->cfg_flags = CFG_F_MARKER;
779 /* This hack is to differentiate the
780 * ADD_UUID is come from "add mdc" record
781 * or from "add failnid" record. */
782 if (!strncmp(marker->cm_comment,
784 clli->cfg_flags |= CFG_F_SKIP;
785 } else if (marker->cm_flags & CM_END) {
791 case LCFG_ADD_UUID: {
792 if (clli->cfg_flags == CFG_F_MARKER) {
793 rc = lustre_lwp_setup(lcfg, lsi);
794 /* XXX: process only the first nid as
795 * we don't need another instance of lwp */
796 clli->cfg_flags |= CFG_F_SKIP;
797 } else if (clli->cfg_flags == (CFG_F_MARKER | CFG_F_SKIP)) {
798 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
801 CERROR("%s: Fail to add uuid, rc:%d\n",
802 lsi->lsi_svname, rc);
806 case LCFG_ADD_CONN: {
807 if (is_mdc_for_mdt0(lustre_cfg_string(lcfg, 0)))
808 rc = lustre_lwp_add_conn(lcfg, lsi);
818 static int lustre_disconnect_lwp(struct super_block *sb)
820 struct lustre_sb_info *lsi = s2lsi(sb);
821 struct obd_device *lwp;
822 char *lwpname = NULL;
823 char *logname = NULL;
824 struct lustre_cfg *lcfg = NULL;
825 struct lustre_cfg_bufs *bufs = NULL;
826 struct config_llog_instance *cfg = NULL;
830 lwp = lustre_find_lwp(lsi, &lwpname, &logname);
831 if (IS_ERR(lwp) && PTR_ERR(lwp) != -ENOENT)
832 GOTO(out, rc = PTR_ERR(lwp));
834 LASSERT(lwpname != NULL);
835 LASSERT(logname != NULL);
839 GOTO(out, rc = -ENOMEM);
842 cfg->cfg_instance = sb;
843 rc = lustre_end_log(sb, logname, cfg);
845 CERROR("%s: Can't end config log %s.\n", lwpname, logname);
849 if (PTR_ERR(lwp) == -ENOENT) {
850 CDEBUG(D_CONFIG, "%s: lwp device wasn't started.\n",
857 GOTO(out, rc = -ENOMEM);
859 lustre_cfg_bufs_reset(bufs, lwp->obd_name);
860 lustre_cfg_bufs_set_string(bufs, 1, NULL);
861 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
863 GOTO(out, rc = -ENOMEM);
865 /* Disconnect import first. NULL is passed for the '@env', since
866 * it will not be used. */
867 rc = lwp->obd_lu_dev->ld_ops->ldo_process_config(NULL, lwp->obd_lu_dev,
871 lustre_cfg_free(lcfg);
877 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
879 OBD_FREE(logname, MTI_NAME_MAXLEN);
884 * Stop the lwp for an OST/MDT target.
886 static int lustre_stop_lwp(struct super_block *sb)
888 struct lustre_sb_info *lsi = s2lsi(sb);
889 struct obd_device *lwp = NULL;
890 char *lwpname = NULL;
894 lwp = lustre_find_lwp(lsi, &lwpname, NULL);
896 CDEBUG(PTR_ERR(lwp) == -ENOENT ? D_CONFIG : D_ERROR,
897 "%s: lwp wasn't started.\n", lsi->lsi_svname);
902 rc = class_manual_cleanup(lwp);
906 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
911 * Start the lwp(fsname-MDT0000-lwp-OSTxxxx) for an OST or MDT target,
912 * which would be used to establish connection from OST to MDT0.
914 static int lustre_start_lwp(struct super_block *sb)
916 struct lustre_sb_info *lsi = s2lsi(sb);
917 struct config_llog_instance *cfg = NULL;
918 struct obd_device *lwp;
919 char *lwpname = NULL;
920 char *logname = NULL;
924 lwp = lustre_find_lwp(lsi, &lwpname, &logname);
926 /* the lwp device already stared */
927 if (lwp && !IS_ERR(lwp))
930 if (PTR_ERR(lwp) != -ENOENT)
931 GOTO(out, rc = PTR_ERR(lwp));
933 LASSERT(lwpname != NULL);
934 LASSERT(logname != NULL);
938 GOTO(out, rc = -ENOMEM);
940 cfg->cfg_callback = client_lwp_config_process;
941 cfg->cfg_instance = sb;
943 rc = lustre_process_log(sb, logname, cfg);
946 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
948 OBD_FREE(logname, MTI_NAME_MAXLEN);
954 DEFINE_MUTEX(server_start_lock);
956 /* Stop MDS/OSS if nobody is using them */
957 static int server_stop_servers(int lsiflags)
959 struct obd_device *obd = NULL;
960 struct obd_type *type = NULL;
964 mutex_lock(&server_start_lock);
966 /* Either an MDT or an OST or neither */
967 /* if this was an MDT, and there are no more MDT's, clean up the MDS */
968 if (lsiflags & LDD_F_SV_TYPE_MDT) {
969 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
971 type = class_search_type(LUSTRE_MDT_NAME);
974 /* if this was an OST, and there are no more OST's, clean up the OSS */
975 if (lsiflags & LDD_F_SV_TYPE_OST) {
976 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
978 type = class_search_type(LUSTRE_OST_NAME);
981 if (obd != NULL && (type == NULL || type->typ_refcnt == 0)) {
983 /* obd_fail doesn't mean much on a server obd */
984 rc = class_manual_cleanup(obd);
987 mutex_unlock(&server_start_lock);
992 int server_mti_print(const char *title, struct mgs_target_info *mti)
994 PRINT_CMD(PRINT_MASK, "mti %s\n", title);
995 PRINT_CMD(PRINT_MASK, "server: %s\n", mti->mti_svname);
996 PRINT_CMD(PRINT_MASK, "fs: %s\n", mti->mti_fsname);
997 PRINT_CMD(PRINT_MASK, "uuid: %s\n", mti->mti_uuid);
998 PRINT_CMD(PRINT_MASK, "ver: %d flags: %#x\n",
999 mti->mti_config_ver, mti->mti_flags);
1002 EXPORT_SYMBOL(server_mti_print);
1004 /* Generate data for registration */
1005 static int server_lsi2mti(struct lustre_sb_info *lsi,
1006 struct mgs_target_info *mti)
1008 lnet_process_id_t id;
1013 if (!IS_SERVER(lsi))
1016 if (strlcpy(mti->mti_svname, lsi->lsi_svname, sizeof(mti->mti_svname))
1017 >= sizeof(mti->mti_svname))
1020 mti->mti_nid_count = 0;
1021 while (LNetGetId(i++, &id) != -ENOENT) {
1022 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
1025 /* server use --servicenode param, only allow specified
1026 * nids be registered */
1027 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) != 0 &&
1028 class_match_nid(lsi->lsi_lmd->lmd_params,
1029 PARAM_FAILNODE, id.nid) < 1)
1032 /* match specified network */
1033 if (!class_match_net(lsi->lsi_lmd->lmd_params,
1034 PARAM_NETWORK, LNET_NIDNET(id.nid)))
1037 mti->mti_nids[mti->mti_nid_count] = id.nid;
1038 mti->mti_nid_count++;
1039 if (mti->mti_nid_count >= MTI_NIDS_MAX) {
1040 CWARN("Only using first %d nids for %s\n",
1041 mti->mti_nid_count, mti->mti_svname);
1046 mti->mti_lustre_ver = LUSTRE_VERSION_CODE;
1047 mti->mti_config_ver = 0;
1049 rc = server_name2fsname(lsi->lsi_svname, mti->mti_fsname, NULL);
1053 rc = server_name2index(lsi->lsi_svname, &mti->mti_stripe_index, NULL);
1056 /* Orion requires index to be set */
1057 LASSERT(!(rc & LDD_F_NEED_INDEX));
1058 /* keep only LDD flags */
1059 mti->mti_flags = lsi->lsi_flags & LDD_F_MASK;
1060 if (mti->mti_flags & (LDD_F_WRITECONF | LDD_F_VIRGIN))
1061 mti->mti_flags |= LDD_F_UPDATE;
1062 cplen = strlcpy(mti->mti_params, lsi->lsi_lmd->lmd_params,
1063 sizeof(mti->mti_params));
1064 if (cplen >= sizeof(mti->mti_params))
1069 /* Register an old or new target with the MGS. If needed MGS will construct
1070 startup logs and assign index */
1071 static int server_register_target(struct lustre_sb_info *lsi)
1073 struct obd_device *mgc = lsi->lsi_mgc;
1074 struct mgs_target_info *mti = NULL;
1081 if (!IS_SERVER(lsi))
1088 rc = server_lsi2mti(lsi, mti);
1092 CDEBUG(D_MOUNT, "Registration %s, fs=%s, %s, index=%04x, flags=%#x\n",
1093 mti->mti_svname, mti->mti_fsname,
1094 libcfs_nid2str(mti->mti_nids[0]), mti->mti_stripe_index,
1097 /* if write_conf is true, the registration must succeed */
1098 writeconf = !!(lsi->lsi_flags & (LDD_F_NEED_INDEX | LDD_F_UPDATE));
1099 mti->mti_flags |= LDD_F_OPC_REG;
1101 /* Register the target */
1102 /* FIXME use mgc_process_config instead */
1103 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1104 sizeof(KEY_REGISTER_TARGET),
1105 KEY_REGISTER_TARGET,
1106 sizeof(*mti), mti, NULL);
1108 if (mti->mti_flags & LDD_F_ERROR) {
1109 LCONSOLE_ERROR_MSG(0x160,
1110 "%s: the MGS refuses to allow this server "
1111 "to start: rc = %d. Please see messages on "
1112 "the MGS.\n", lsi->lsi_svname, rc);
1113 } else if (writeconf) {
1114 LCONSOLE_ERROR_MSG(0x15f,
1115 "%s: cannot register this server with the MGS: "
1116 "rc = %d. Is the MGS running?\n",
1117 lsi->lsi_svname, rc);
1119 CERROR("%s: error registering with the MGS: rc = %d "
1120 "(not fatal)\n", lsi->lsi_svname, rc);
1121 /* reset the error code for non-fatal error. */
1134 * Notify the MGS that this target is ready.
1135 * Used by IR - if the MGS receives this message, it will notify clients.
1137 static int server_notify_target(struct super_block *sb, struct obd_device *obd)
1139 struct lustre_sb_info *lsi = s2lsi(sb);
1140 struct obd_device *mgc = lsi->lsi_mgc;
1141 struct mgs_target_info *mti = NULL;
1147 if (!(IS_SERVER(lsi)))
1153 rc = server_lsi2mti(lsi, mti);
1157 mti->mti_instance = obd->u.obt.obt_instance;
1158 mti->mti_flags |= LDD_F_OPC_READY;
1160 /* FIXME use mgc_process_config instead */
1161 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1162 sizeof(KEY_REGISTER_TARGET),
1163 KEY_REGISTER_TARGET,
1164 sizeof(*mti), mti, NULL);
1166 /* Imperative recovery: if the mgs informs us to use IR? */
1167 if (!rc && !(mti->mti_flags & LDD_F_ERROR) &&
1168 (mti->mti_flags & LDD_F_IR_CAPABLE))
1169 lsi->lsi_flags |= LDD_F_IR_CAPABLE;
1178 /** Start server targets: MDTs and OSTs
1180 static int server_start_targets(struct super_block *sb)
1182 struct obd_device *obd;
1183 struct lustre_sb_info *lsi = s2lsi(sb);
1184 struct config_llog_instance cfg;
1186 struct lu_device *dev;
1190 CDEBUG(D_MOUNT, "starting target %s\n", lsi->lsi_svname);
1193 /* make sure the MDS is started */
1194 mutex_lock(&server_start_lock);
1195 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
1197 rc = lustre_start_simple(LUSTRE_MDS_OBDNAME,
1199 LUSTRE_MDS_OBDNAME"_uuid",
1202 mutex_unlock(&server_start_lock);
1203 CERROR("failed to start MDS: %d\n", rc);
1207 mutex_unlock(&server_start_lock);
1210 /* If we're an OST, make sure the global OSS is running */
1212 /* make sure OSS is started */
1213 mutex_lock(&server_start_lock);
1214 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
1216 rc = lustre_start_simple(LUSTRE_OSS_OBDNAME,
1218 LUSTRE_OSS_OBDNAME"_uuid",
1221 mutex_unlock(&server_start_lock);
1222 CERROR("failed to start OSS: %d\n", rc);
1226 mutex_unlock(&server_start_lock);
1229 /* Set the mgc fs to our server disk. This allows the MGC to
1230 * read and write configs locally, in case it can't talk to the MGS. */
1231 rc = server_mgc_set_fs(lsi->lsi_mgc, sb);
1233 GOTO(out_stop_service, rc);
1235 /* Register with MGS */
1236 rc = server_register_target(lsi);
1240 /* Let the target look up the mount using the target's name
1241 (we can't pass the sb or mnt through class_process_config.) */
1242 rc = server_register_mount(lsi->lsi_svname, sb);
1246 /* Start targets using the llog named for the target */
1247 memset(&cfg, 0, sizeof(cfg));
1248 cfg.cfg_callback = class_config_llog_handler;
1249 rc = lustre_process_log(sb, lsi->lsi_svname, &cfg);
1251 CERROR("failed to start server %s: %d\n",
1252 lsi->lsi_svname, rc);
1253 /* Do NOT call server_deregister_mount() here. This makes it
1254 * impossible to find mount later in cleanup time and leaves
1255 * @lsi and othder stuff leaked. -umka */
1259 obd = class_name2obd(lsi->lsi_svname);
1261 CERROR("no server named %s was started\n", lsi->lsi_svname);
1262 GOTO(out_mgc, rc = -ENXIO);
1265 if (IS_OST(lsi) || IS_MDT(lsi)) {
1266 rc = lustre_start_lwp(sb);
1268 CERROR("%s: failed to start LWP: %d\n",
1269 lsi->lsi_svname, rc);
1274 server_notify_target(sb, obd);
1276 /* calculate recovery timeout, do it after lustre_process_log */
1277 server_calc_timeout(lsi, obd);
1279 /* log has been fully processed */
1280 obd_notify(obd, NULL, OBD_NOTIFY_CONFIG, (void *)CONFIG_LOG);
1282 /* log has been fully processed, let clients connect */
1283 dev = obd->obd_lu_dev;
1284 if (dev && dev->ld_ops->ldo_prepare) {
1285 rc = lu_env_init(&env, dev->ld_type->ldt_ctx_tags);
1287 struct lu_context session_ctx;
1289 lu_context_init(&session_ctx, LCT_SERVER_SESSION);
1290 session_ctx.lc_thread = NULL;
1291 lu_context_enter(&session_ctx);
1292 env.le_ses = &session_ctx;
1294 rc = dev->ld_ops->ldo_prepare(&env, NULL, dev);
1297 lu_context_exit(&session_ctx);
1298 lu_context_fini(&session_ctx);
1302 /* abort recovery only on the complete stack:
1303 * many devices can be involved */
1304 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_ABORT_RECOV) &&
1305 (OBP(obd, iocontrol))) {
1306 obd_iocontrol(OBD_IOC_ABORT_RECOVERY, obd->obd_self_export, 0,
1311 /* Release the mgc fs for others to use */
1312 server_mgc_clear_fs(lsi->lsi_mgc);
1316 server_stop_servers(lsi->lsi_flags);
1321 static int lsi_prepare(struct lustre_sb_info *lsi)
1328 LASSERT(lsi->lsi_lmd);
1330 /* The server name is given as a mount line option */
1331 if (lsi->lsi_lmd->lmd_profile == NULL) {
1332 LCONSOLE_ERROR("Can't determine server name\n");
1336 if (strlen(lsi->lsi_lmd->lmd_profile) >= sizeof(lsi->lsi_svname))
1337 RETURN(-ENAMETOOLONG);
1339 strcpy(lsi->lsi_svname, lsi->lsi_lmd->lmd_profile);
1341 /* Determine osd type */
1342 if (lsi->lsi_lmd->lmd_osd_type != NULL) {
1343 if (strlen(lsi->lsi_lmd->lmd_osd_type) >=
1344 sizeof(lsi->lsi_osd_type))
1345 RETURN(-ENAMETOOLONG);
1347 strcpy(lsi->lsi_osd_type, lsi->lsi_lmd->lmd_osd_type);
1349 strcpy(lsi->lsi_osd_type, LUSTRE_OSD_LDISKFS_NAME);
1352 /* XXX: a temp. solution for components using fsfilt
1353 * to be removed in one of the subsequent patches */
1354 if (!strcmp(lsi->lsi_lmd->lmd_osd_type, "osd-ldiskfs"))
1355 strcpy(lsi->lsi_fstype, "ldiskfs");
1357 strcpy(lsi->lsi_fstype, lsi->lsi_lmd->lmd_osd_type);
1359 /* Determine server type */
1360 rc = server_name2index(lsi->lsi_svname, &index, NULL);
1362 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) {
1363 /* Assume we're a bare MGS */
1365 lsi->lsi_lmd->lmd_flags |= LMD_FLG_NOSVC;
1367 LCONSOLE_ERROR("Can't determine server type of '%s'\n",
1372 lsi->lsi_flags |= rc;
1374 /* Add mount line flags that used to be in ldd:
1375 * writeconf, mgs, anything else?
1377 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_WRITECONF) ?
1378 LDD_F_WRITECONF : 0;
1379 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_VIRGIN) ?
1381 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_UPDATE) ?
1383 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) ?
1384 LDD_F_SV_TYPE_MGS : 0;
1385 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) ?
1386 LDD_F_NO_PRIMNODE : 0;
1391 /*************** server mount ******************/
1393 /** Start the shutdown of servers at umount.
1395 static void server_put_super(struct super_block *sb)
1397 struct lustre_sb_info *lsi = s2lsi(sb);
1398 struct obd_device *obd;
1399 char *tmpname, *extraname = NULL;
1401 int lsiflags = lsi->lsi_flags;
1404 LASSERT(IS_SERVER(lsi));
1406 tmpname_sz = strlen(lsi->lsi_svname) + 1;
1407 OBD_ALLOC(tmpname, tmpname_sz);
1408 memcpy(tmpname, lsi->lsi_svname, tmpname_sz);
1409 CDEBUG(D_MOUNT, "server put_super %s\n", tmpname);
1410 if (IS_MDT(lsi) && (lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC))
1411 snprintf(tmpname, tmpname_sz, "MGS");
1413 /* disconnect the lwp first to drain off the inflight request */
1414 if (IS_OST(lsi) || IS_MDT(lsi)) {
1417 rc = lustre_disconnect_lwp(sb);
1418 if (rc && rc != ETIMEDOUT)
1419 CERROR("%s: failed to disconnect lwp. (rc=%d)\n",
1423 /* Stop the target */
1424 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1425 (IS_MDT(lsi) || IS_OST(lsi))) {
1426 struct lustre_profile *lprof = NULL;
1428 /* tell the mgc to drop the config log */
1429 lustre_end_log(sb, lsi->lsi_svname, NULL);
1431 /* COMPAT_146 - profile may get deleted in mgc_cleanup.
1432 If there are any setup/cleanup errors, save the lov
1433 name for safety cleanup later. */
1434 lprof = class_get_profile(lsi->lsi_svname);
1435 if (lprof && lprof->lp_dt) {
1436 OBD_ALLOC(extraname, strlen(lprof->lp_dt) + 1);
1437 strcpy(extraname, lprof->lp_dt);
1440 obd = class_name2obd(lsi->lsi_svname);
1442 CDEBUG(D_MOUNT, "stopping %s\n", obd->obd_name);
1443 if (lsiflags & LSI_UMOUNT_FAILOVER)
1445 /* We can't seem to give an error return code
1446 * to .put_super, so we better make sure we clean up! */
1448 class_manual_cleanup(obd);
1450 CERROR("no obd %s\n", lsi->lsi_svname);
1451 server_deregister_mount(lsi->lsi_svname);
1455 /* If they wanted the mgs to stop separately from the mdt, they
1456 should have put it on a different device. */
1458 /* if MDS start with --nomgs, don't stop MGS then */
1459 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS))
1460 server_stop_mgs(sb);
1463 if (IS_OST(lsi) || IS_MDT(lsi)) {
1464 if (lustre_stop_lwp(sb) < 0)
1465 CERROR("%s: failed to stop lwp!\n", tmpname);
1468 /* Clean the mgc and sb */
1469 lustre_common_put_super(sb);
1471 /* wait till all in-progress cleanups are done
1472 * specifically we're interested in ofd cleanup
1474 obd_zombie_barrier();
1476 /* Stop the servers (MDS, OSS) if no longer needed. We must wait
1477 until the target is really gone so that our type refcount check
1479 server_stop_servers(lsiflags);
1481 /* In case of startup or cleanup err, stop related obds */
1483 obd = class_name2obd(extraname);
1485 CWARN("Cleaning orphaned obd %s\n", extraname);
1487 class_manual_cleanup(obd);
1489 OBD_FREE(extraname, strlen(extraname) + 1);
1492 LCONSOLE_WARN("server umount %s complete\n", tmpname);
1493 OBD_FREE(tmpname, tmpname_sz);
1497 /** Called only for 'umount -f'
1499 static void server_umount_begin(struct super_block *sb)
1501 struct lustre_sb_info *lsi = s2lsi(sb);
1504 CDEBUG(D_MOUNT, "umount -f\n");
1505 /* umount = failover
1507 no third way to do non-force, non-failover */
1508 lsi->lsi_flags &= ~LSI_UMOUNT_FAILOVER;
1512 static int server_statfs(struct dentry *dentry, struct kstatfs *buf)
1514 struct super_block *sb = dentry->d_sb;
1515 struct lustre_sb_info *lsi = s2lsi(sb);
1516 struct obd_statfs statfs;
1520 if (lsi->lsi_dt_dev) {
1521 rc = dt_statfs(NULL, lsi->lsi_dt_dev, &statfs);
1523 statfs_unpack(buf, &statfs);
1524 buf->f_type = sb->s_magic;
1530 buf->f_type = sb->s_magic;
1531 buf->f_bsize = sb->s_blocksize;
1537 buf->f_namelen = NAME_MAX;
1541 /** The operations we support directly on the superblock:
1542 * mount, umount, and df.
1544 static struct super_operations server_ops = {
1545 .put_super = server_put_super,
1546 .umount_begin = server_umount_begin, /* umount -f */
1547 .statfs = server_statfs,
1551 * Xattr support for Lustre servers
1553 static ssize_t lustre_getxattr(struct dentry *dentry, const char *name,
1554 void *buffer, size_t size)
1556 if (!selinux_is_enabled())
1561 static int lustre_setxattr(struct dentry *dentry, const char *name,
1562 const void *value, size_t size, int flags)
1567 static ssize_t lustre_listxattr(struct dentry *d_entry, char *name,
1573 const struct inode_operations server_inode_operations = {
1574 .setxattr = lustre_setxattr,
1575 .getxattr = lustre_getxattr,
1576 .listxattr = lustre_listxattr,
1579 #define log2(n) ffz(~(n))
1580 #define LUSTRE_SUPER_MAGIC 0x0BD00BD1
1582 static int server_fill_super_common(struct super_block *sb)
1584 struct inode *root = 0;
1587 CDEBUG(D_MOUNT, "Server sb, dev=%d\n", (int)sb->s_dev);
1589 sb->s_blocksize = 4096;
1590 sb->s_blocksize_bits = log2(sb->s_blocksize);
1591 sb->s_magic = LUSTRE_SUPER_MAGIC;
1592 sb->s_maxbytes = 0; /* we don't allow file IO on server mountpoints */
1593 sb->s_flags |= MS_RDONLY;
1594 sb->s_op = &server_ops;
1596 root = new_inode(sb);
1598 CERROR("Can't make root inode\n");
1602 /* returns -EIO for every operation */
1603 /* make_bad_inode(root); -- badness - can't umount */
1604 /* apparently we need to be a directory for the mount to finish */
1605 root->i_mode = S_IFDIR;
1606 root->i_op = &server_inode_operations;
1607 sb->s_root = d_make_root(root);
1609 CERROR("%s: can't make root dentry\n", sb->s_id);
1616 static int osd_start(struct lustre_sb_info *lsi, unsigned long mflags)
1618 struct lustre_mount_data *lmd = lsi->lsi_lmd;
1619 struct obd_device *obd;
1620 struct dt_device_param p;
1623 bool already_started = 0;
1627 "Attempting to start %s, type=%s, lsifl=%x, mountfl=%lx\n",
1628 lsi->lsi_svname, lsi->lsi_osd_type, lsi->lsi_flags, mflags);
1630 sprintf(lsi->lsi_osd_obdname, "%s-osd", lsi->lsi_svname);
1631 strcpy(lsi->lsi_osd_uuid, lsi->lsi_osd_obdname);
1632 strcat(lsi->lsi_osd_uuid, "_UUID");
1633 sprintf(flagstr, "%lu:%lu", mflags, (unsigned long) lmd->lmd_flags);
1635 obd = class_name2obd(lsi->lsi_osd_obdname);
1637 rc = lustre_start_simple(lsi->lsi_osd_obdname,
1639 lsi->lsi_osd_uuid, lmd->lmd_dev,
1640 flagstr, lsi->lsi_lmd->lmd_opts,
1644 obd = class_name2obd(lsi->lsi_osd_obdname);
1647 CDEBUG(D_MOUNT, "%s already started\n", lsi->lsi_osd_obdname);
1648 already_started = 1;
1649 /* but continue setup to allow special case of MDT and internal
1650 * MGT being started separately, that will be identified in
1651 * caller server_fill_super().
1655 rc = obd_connect(NULL, &lsi->lsi_osd_exp,
1656 obd, &obd->obd_uuid, NULL, NULL);
1658 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 10);
1661 if (!already_started) {
1663 class_manual_cleanup(obd);
1664 lsi->lsi_dt_dev = NULL;
1669 LASSERT(obd->obd_lu_dev);
1670 lu_device_get(obd->obd_lu_dev);
1671 lsi->lsi_dt_dev = lu2dt_dev(obd->obd_lu_dev);
1672 LASSERT(lsi->lsi_dt_dev);
1674 /* set disk context for llog usage */
1675 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1676 obd->obd_lvfs_ctxt.dt = lsi->lsi_dt_dev;
1678 dt_conf_get(NULL, lsi->lsi_dt_dev, &p);
1680 RETURN(already_started ? -EALREADY : rc);
1683 /** Fill in the superblock info for a Lustre server.
1684 * Mount the device with the correct options.
1685 * Read the on-disk config file.
1686 * Start the services.
1688 int server_fill_super(struct super_block *sb)
1690 struct lustre_sb_info *lsi = s2lsi(sb);
1694 rc = lsi_prepare(lsi);
1698 /* Start low level OSD */
1699 rc = osd_start(lsi, sb->s_flags);
1700 /* Handle separate nosvc and nomgs case */
1701 if (rc && ((rc != -EALREADY) || !(lsi->lsi_lmd->lmd_flags &
1702 (LMD_FLG_NOSVC|LMD_FLG_NOMGS)))) {
1703 CERROR("Unable to start osd on %s: %d\n",
1704 lsi->lsi_lmd->lmd_dev, rc);
1709 CDEBUG(D_MOUNT, "Found service %s on device %s\n",
1710 lsi->lsi_svname, lsi->lsi_lmd->lmd_dev);
1712 if (class_name2obd(lsi->lsi_svname)) {
1713 LCONSOLE_ERROR_MSG(0x161, "The target named %s is already "
1714 "running. Double-mount may have compromised"
1715 " the disk journal.\n",
1721 /* Start MGS before MGC */
1722 if (IS_MGS(lsi) && !(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS)) {
1723 rc = server_start_mgs(sb);
1728 /* Start MGC before servers */
1729 rc = lustre_start_mgc(sb);
1733 /* Set up all obd devices for service */
1734 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1735 (IS_OST(lsi) || IS_MDT(lsi))) {
1736 rc = server_start_targets(sb);
1738 CERROR("Unable to start targets: %d\n", rc);
1741 /* FIXME overmount client here, or can we just start a
1742 * client log and client_fill_super on this sb? We
1743 * need to make sure server_put_super gets called too
1744 * - ll_put_super calls lustre_common_put_super; check
1745 * there for LSI_SERVER flag, call s_p_s if so.
1747 * Probably should start client from new thread so we
1748 * can return. Client will not finish until all
1749 * servers are connected. Note - MGS-only server does
1750 * NOT get a client, since there is no lustre fs
1751 * associated - the MGS is for all lustre fs's */
1754 rc = server_fill_super_common(sb);
1760 /* We jump here in case of failure while starting targets or MGS.
1761 * In this case we can't just put @mnt and have to do real cleanup
1762 * with stoping targets, etc. */
1763 server_put_super(sb);
1768 * Calculate timeout value for a target.
1770 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd)
1772 struct lustre_mount_data *lmd;
1776 bool has_ir = !!(lsi->lsi_flags & LDD_F_IR_CAPABLE);
1777 int min = OBD_RECOVERY_TIME_MIN;
1779 LASSERT(IS_SERVER(lsi));
1783 soft = lmd->lmd_recovery_time_soft;
1784 hard = lmd->lmd_recovery_time_hard;
1785 has_ir = has_ir && !(lmd->lmd_flags & LMD_FLG_NOIR);
1786 obd->obd_no_ir = !has_ir;
1790 soft = OBD_RECOVERY_TIME_SOFT;
1792 hard = OBD_RECOVERY_TIME_HARD;
1794 /* target may have ir_factor configured. */
1795 factor = OBD_IR_FACTOR_DEFAULT;
1796 if (obd->obd_recovery_ir_factor)
1797 factor = obd->obd_recovery_ir_factor;
1800 int new_soft = soft;
1801 int new_hard = hard;
1803 /* adjust timeout value by imperative recovery */
1805 new_soft = (soft * factor) / OBD_IR_FACTOR_MAX;
1806 new_hard = (hard * factor) / OBD_IR_FACTOR_MAX;
1808 /* make sure the timeout is not too short */
1809 new_soft = max(min, new_soft);
1810 new_hard = max(new_soft, new_hard);
1812 LCONSOLE_INFO("%s: Imperative Recovery enabled, recovery "
1813 "window shrunk from %d-%d down to %d-%d\n",
1814 obd->obd_name, soft, hard, new_soft, new_hard);
1821 obd->obd_recovery_timeout = max(obd->obd_recovery_timeout, soft);
1822 obd->obd_recovery_time_hard = hard;
1823 obd->obd_recovery_ir_factor = factor;
1825 EXPORT_SYMBOL(server_calc_timeout);