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, 2015, 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)
49 #include <linux/types.h>
50 #include <linux/selinux.h>
51 #include <linux/statfs.h>
52 #include <linux/version.h>
53 #ifdef HAVE_KERNEL_LOCKED
54 #include <linux/smp_lock.h>
57 #include <lustre/lustre_idl.h>
58 #include <lustre/lustre_user.h>
60 #include <llog_swab.h>
61 #include <lustre_disk.h>
62 #include <lustre_ioctl.h>
63 #include <lustre_log.h>
64 #include <lustre_param.h>
66 #include <obd_class.h>
68 /*********** mount lookup *********/
70 static DEFINE_MUTEX(lustre_mount_info_lock);
71 static struct list_head server_mount_info_list =
72 LIST_HEAD_INIT(server_mount_info_list);
74 static struct lustre_mount_info *server_find_mount(const char *name)
76 struct list_head *tmp;
77 struct lustre_mount_info *lmi;
80 list_for_each(tmp, &server_mount_info_list) {
81 lmi = list_entry(tmp, struct lustre_mount_info,
83 if (strcmp(name, lmi->lmi_name) == 0)
89 /* we must register an obd for a mount before we call the setup routine.
90 *_setup will call lustre_get_mount to get the mnt struct
91 by obd_name, since we can't pass the pointer to setup. */
92 static int server_register_mount(const char *name, struct super_block *sb)
94 struct lustre_mount_info *lmi;
100 OBD_ALLOC(lmi, sizeof(*lmi));
103 OBD_ALLOC(name_cp, strlen(name) + 1);
105 OBD_FREE(lmi, sizeof(*lmi));
108 strcpy(name_cp, name);
110 mutex_lock(&lustre_mount_info_lock);
112 if (server_find_mount(name)) {
113 mutex_unlock(&lustre_mount_info_lock);
114 OBD_FREE(lmi, sizeof(*lmi));
115 OBD_FREE(name_cp, strlen(name) + 1);
116 CERROR("Already registered %s\n", name);
119 lmi->lmi_name = name_cp;
121 list_add(&lmi->lmi_list_chain, &server_mount_info_list);
123 mutex_unlock(&lustre_mount_info_lock);
125 CDEBUG(D_MOUNT, "register mount %p from %s\n", sb, name);
130 /* when an obd no longer needs a mount */
131 static int server_deregister_mount(const char *name)
133 struct lustre_mount_info *lmi;
136 mutex_lock(&lustre_mount_info_lock);
137 lmi = server_find_mount(name);
139 mutex_unlock(&lustre_mount_info_lock);
140 CERROR("%s not registered\n", name);
144 CDEBUG(D_MOUNT, "deregister mount %p from %s\n", lmi->lmi_sb, name);
146 OBD_FREE(lmi->lmi_name, strlen(lmi->lmi_name) + 1);
147 list_del(&lmi->lmi_list_chain);
148 OBD_FREE(lmi, sizeof(*lmi));
149 mutex_unlock(&lustre_mount_info_lock);
154 /* obd's look up a registered mount using their obdname. This is just
155 for initial obd setup to find the mount struct. It should not be
156 called every time you want to mntget. */
157 struct lustre_mount_info *server_get_mount(const char *name)
159 struct lustre_mount_info *lmi;
160 struct lustre_sb_info *lsi;
163 mutex_lock(&lustre_mount_info_lock);
164 lmi = server_find_mount(name);
165 mutex_unlock(&lustre_mount_info_lock);
167 CERROR("Can't find mount for %s\n", name);
170 lsi = s2lsi(lmi->lmi_sb);
172 atomic_inc(&lsi->lsi_mounts);
174 CDEBUG(D_MOUNT, "get mount %p from %s, refs=%d\n", lmi->lmi_sb,
175 name, atomic_read(&lsi->lsi_mounts));
179 EXPORT_SYMBOL(server_get_mount);
182 * server_put_mount: to be called from obd_cleanup methods
184 * @dereg_mnt: 0 or 1 depending on whether the mount is to be deregistered or
187 * The caller decides whether server_deregister_mount() needs to be called or
188 * not. Calling of server_deregister_mount() does not depend on refcounting on
189 * lsi because we could have say the mgs and mds on the same node and we
190 * unmount the mds, then the ref on the lsi would still be non-zero but we
191 * would still want to deregister the mds mount.
193 int server_put_mount(const char *name, bool dereg_mnt)
195 struct lustre_mount_info *lmi;
196 struct lustre_sb_info *lsi;
199 mutex_lock(&lustre_mount_info_lock);
200 lmi = server_find_mount(name);
201 mutex_unlock(&lustre_mount_info_lock);
203 CERROR("Can't find mount for %s\n", name);
206 lsi = s2lsi(lmi->lmi_sb);
208 CDEBUG(D_MOUNT, "put mount %p from %s, refs=%d\n",
209 lmi->lmi_sb, name, atomic_read(&lsi->lsi_mounts));
211 if (lustre_put_lsi(lmi->lmi_sb))
212 CDEBUG(D_MOUNT, "Last put of mount %p from %s\n",
216 /* this obd should never need the mount again */
217 server_deregister_mount(name);
221 EXPORT_SYMBOL(server_put_mount);
223 /* Set up a MGS to serve startup logs */
224 static int server_start_mgs(struct super_block *sb)
226 struct lustre_sb_info *lsi = s2lsi(sb);
227 struct lustre_mount_info *lmi;
231 /* It is impossible to have more than 1 MGS per node, since
232 MGC wouldn't know which to connect to */
233 lmi = server_find_mount(LUSTRE_MGS_OBDNAME);
235 lsi = s2lsi(lmi->lmi_sb);
236 LCONSOLE_ERROR_MSG(0x15d, "The MGS service was already started"
241 CDEBUG(D_CONFIG, "Start MGS service %s\n", LUSTRE_MGS_OBDNAME);
243 rc = server_register_mount(LUSTRE_MGS_OBDNAME, sb);
246 rc = lustre_start_simple(LUSTRE_MGS_OBDNAME, LUSTRE_MGS_NAME,
247 LUSTRE_MGS_OBDNAME, NULL, NULL,
248 lsi->lsi_osd_obdname, NULL);
249 /* server_deregister_mount() is not called previously, for lsi
250 * and other stuff can't be freed cleanly when mgs calls
251 * server_put_mount() in error handling case (see b=17758),
252 * this problem is caused by a bug in mgs_init0, which forgot
253 * calling server_put_mount in error case. */
256 server_deregister_mount(LUSTRE_MGS_OBDNAME);
260 LCONSOLE_ERROR_MSG(0x15e, "Failed to start MGS '%s' (%d). "
261 "Is the 'mgs' module loaded?\n",
262 LUSTRE_MGS_OBDNAME, rc);
266 static int server_stop_mgs(struct super_block *sb)
268 struct obd_device *obd;
270 struct lustre_mount_info *lmi;
273 /* Do not stop MGS if this device is not the running MGT */
274 lmi = server_find_mount(LUSTRE_MGS_OBDNAME);
275 if (lmi != NULL && lmi->lmi_sb != sb)
278 CDEBUG(D_MOUNT, "Stop MGS service %s\n", LUSTRE_MGS_OBDNAME);
280 /* There better be only one MGS */
281 obd = class_name2obd(LUSTRE_MGS_OBDNAME);
283 CDEBUG(D_CONFIG, "mgs %s not running\n", LUSTRE_MGS_OBDNAME);
287 /* The MGS should always stop when we say so */
289 rc = class_manual_cleanup(obd);
293 /* Since there's only one mgc per node, we have to change it's fs to get
294 access to the right disk. */
295 static int server_mgc_set_fs(const struct lu_env *env,
296 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(env, 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(const struct lu_env *env,
315 struct obd_device *mgc)
320 CDEBUG(D_MOUNT, "Unassign mgc disk\n");
322 rc = obd_set_info_async(env, mgc->obd_self_export,
323 sizeof(KEY_CLEAR_FS), KEY_CLEAR_FS,
328 static inline bool is_mdc_device(const char *devname)
332 ptr = strrchr(devname, '-');
333 return ptr != NULL && strcmp(ptr, "-mdc") == 0;
336 static inline bool tgt_is_mdt(const char *tgtname, __u32 *idx)
340 type = server_name2index(tgtname, idx, NULL);
342 return type == LDD_F_SV_TYPE_MDT;
346 * Convert OST/MDT name(fsname-{MDT,OST}xxxx) to a lwp name with the @idx:yyyy
347 * (fsname-MDTyyyy-lwp-{MDT,OST}xxxx)
349 int tgt_name2lwp_name(const char *tgt_name, char *lwp_name, int len, __u32 idx)
356 OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
360 rc = server_name2fsname(tgt_name, fsname, &tgt);
362 CERROR("%s: failed to get fsname from tgt_name: rc = %d\n",
367 if (*tgt != '-' && *tgt != ':') {
368 CERROR("%s: invalid tgt_name name!\n", tgt_name);
369 GOTO(cleanup, rc = -EINVAL);
373 if (strncmp(tgt, "OST", 3) != 0 && strncmp(tgt, "MDT", 3) != 0) {
374 CERROR("%s is not an OST or MDT target!\n", tgt_name);
375 GOTO(cleanup, rc = -EINVAL);
377 snprintf(lwp_name, len, "%s-MDT%04x-%s-%s",
378 fsname, idx, LUSTRE_LWP_NAME, tgt);
380 GOTO(cleanup, rc = 0);
384 OBD_FREE(fsname, MTI_NAME_MAXLEN);
388 EXPORT_SYMBOL(tgt_name2lwp_name);
390 static struct list_head lwp_register_list =
391 LIST_HEAD_INIT(lwp_register_list);
392 static DEFINE_SPINLOCK(lwp_register_list_lock);
394 static void lustre_put_lwp_item(struct lwp_register_item *lri)
396 if (atomic_dec_and_test(&lri->lri_ref)) {
397 LASSERT(list_empty(&lri->lri_list));
399 if (*lri->lri_exp != NULL)
400 class_export_put(*lri->lri_exp);
405 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
406 register_lwp_cb cb_func, void *cb_data)
408 struct obd_device *lwp;
409 struct lwp_register_item *lri;
412 LASSERTF(strlen(lwpname) < MTI_NAME_MAXLEN, "lwpname is too long %s\n",
414 LASSERT(exp != NULL && *exp == NULL);
420 lwp = class_name2obd(lwpname);
421 if (lwp != NULL && lwp->obd_set_up == 1) {
422 struct obd_uuid *uuid;
429 memcpy(uuid->uuid, lwpname, strlen(lwpname));
430 *exp = cfs_hash_lookup(lwp->obd_uuid_hash, uuid);
434 memcpy(lri->lri_name, lwpname, strlen(lwpname));
436 lri->lri_cb_func = cb_func;
437 lri->lri_cb_data = cb_data;
438 INIT_LIST_HEAD(&lri->lri_list);
440 * Initialize the lri_ref at 2, one will be released before
441 * current function returned via lustre_put_lwp_item(), the
442 * other will be released in lustre_deregister_lwp_item().
444 atomic_set(&lri->lri_ref, 2);
446 spin_lock(&lwp_register_list_lock);
447 list_add(&lri->lri_list, &lwp_register_list);
448 spin_unlock(&lwp_register_list_lock);
450 if (*exp != NULL && cb_func != NULL)
452 lustre_put_lwp_item(lri);
456 EXPORT_SYMBOL(lustre_register_lwp_item);
458 void lustre_deregister_lwp_item(struct obd_export **exp)
460 struct lwp_register_item *lri;
462 spin_lock(&lwp_register_list_lock);
463 list_for_each_entry(lri, &lwp_register_list, lri_list) {
464 if (exp == lri->lri_exp) {
465 list_del_init(&lri->lri_list);
466 spin_unlock(&lwp_register_list_lock);
468 lustre_put_lwp_item(lri);
472 spin_unlock(&lwp_register_list_lock);
474 EXPORT_SYMBOL(lustre_deregister_lwp_item);
476 struct obd_export *lustre_find_lwp_by_index(const char *dev, __u32 idx)
478 struct lustre_mount_info *lmi;
479 struct lustre_sb_info *lsi;
480 struct obd_device *lwp;
481 struct obd_export *exp = NULL;
486 lmi = server_get_mount(dev);
490 lsi = s2lsi(lmi->lmi_sb);
491 rc = server_name2fsname(lsi->lsi_svname, fsname, NULL);
493 CERROR("%s: failed to get fsname: rc = %d\n",
494 lsi->lsi_svname, rc);
498 snprintf(lwp_name, sizeof(lwp_name), "%s-MDT%04x", fsname, idx);
499 spin_lock(&lsi->lsi_lwp_lock);
500 list_for_each_entry(lwp, &lsi->lsi_lwp_list, obd_lwp_list) {
501 char *ptr = strstr(lwp->obd_name, lwp_name);
503 if (ptr != NULL && lwp->obd_lwp_export != NULL) {
504 exp = class_export_get(lwp->obd_lwp_export);
508 spin_unlock(&lsi->lsi_lwp_lock);
511 server_put_mount(dev, false);
515 EXPORT_SYMBOL(lustre_find_lwp_by_index);
517 void lustre_notify_lwp_list(struct obd_export *exp)
519 struct lwp_register_item *lri;
520 LASSERT(exp != NULL);
523 spin_lock(&lwp_register_list_lock);
524 list_for_each_entry(lri, &lwp_register_list, lri_list) {
525 if (strcmp(exp->exp_obd->obd_name, lri->lri_name))
527 if (*lri->lri_exp != NULL)
529 *lri->lri_exp = class_export_get(exp);
530 atomic_inc(&lri->lri_ref);
531 spin_unlock(&lwp_register_list_lock);
533 if (lri->lri_cb_func != NULL)
534 lri->lri_cb_func(lri->lri_cb_data);
535 lustre_put_lwp_item(lri);
537 /* Others may have changed the list after we unlock, we have
538 * to rescan the list from the beginning. Usually, the list
539 * 'lwp_register_list' is very short, and there is 'guard'
540 * lri::lri_exp that will prevent the callback to be done
541 * repeatedly. So rescanning the list has no problem. */
544 spin_unlock(&lwp_register_list_lock);
546 EXPORT_SYMBOL(lustre_notify_lwp_list);
548 static int lustre_lwp_connect(struct obd_device *lwp)
551 struct lu_context session_ctx;
552 struct obd_export *exp;
553 struct obd_uuid *uuid = NULL;
554 struct obd_connect_data *data = NULL;
558 /* log has been fully processed, let clients connect */
559 rc = lu_env_init(&env, lwp->obd_lu_dev->ld_type->ldt_ctx_tags);
563 lu_context_init(&session_ctx, LCT_SERVER_SESSION);
564 session_ctx.lc_thread = NULL;
565 lu_context_enter(&session_ctx);
566 env.le_ses = &session_ctx;
570 GOTO(out, rc = -ENOMEM);
572 data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX;
573 data->ocd_version = LUSTRE_VERSION_CODE;
574 data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS | OBD_CONNECT_FID |
575 OBD_CONNECT_AT | OBD_CONNECT_LRU_RESIZE |
576 OBD_CONNECT_FULL20 | OBD_CONNECT_LVB_TYPE |
577 OBD_CONNECT_LIGHTWEIGHT | OBD_CONNECT_LFSCK |
578 OBD_CONNECT_BULK_MBITS;
581 GOTO(out, rc = -ENOMEM);
583 if (strlen(lwp->obd_name) > sizeof(uuid->uuid)) {
584 CERROR("%s: Too long lwp name %s, max_size is %d\n",
585 lwp->obd_name, lwp->obd_name, (int)sizeof(uuid->uuid));
586 GOTO(out, rc = -EINVAL);
589 /* Use lwp name as the uuid, so we find the export by lwp name later */
590 memcpy(uuid->uuid, lwp->obd_name, strlen(lwp->obd_name));
591 rc = obd_connect(&env, &exp, lwp, uuid, data, NULL);
593 CERROR("%s: connect failed: rc = %d\n", lwp->obd_name, rc);
595 if (unlikely(lwp->obd_lwp_export != NULL))
596 class_export_put(lwp->obd_lwp_export);
597 lwp->obd_lwp_export = class_export_get(exp);
609 lu_context_exit(&session_ctx);
610 lu_context_fini(&session_ctx);
616 * lwp is used by slaves (Non-MDT0 targets) to manage the connection to MDT0,
617 * or from the OSTx to MDTy.
619 static int lustre_lwp_setup(struct lustre_cfg *lcfg, struct lustre_sb_info *lsi,
622 struct obd_device *obd;
623 char *lwpname = NULL;
624 char *lwpuuid = NULL;
628 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
631 CERROR("%s: Can't add uuid: rc =%d\n", lsi->lsi_svname, rc);
635 OBD_ALLOC(lwpname, MTI_NAME_MAXLEN);
637 GOTO(out, rc = -ENOMEM);
639 rc = tgt_name2lwp_name(lsi->lsi_svname, lwpname, MTI_NAME_MAXLEN, idx);
641 CERROR("%s: failed to generate lwp name: rc = %d\n",
642 lsi->lsi_svname, rc);
646 OBD_ALLOC(lwpuuid, MTI_NAME_MAXLEN);
648 GOTO(out, rc = -ENOMEM);
650 sprintf(lwpuuid, "%s_UUID", lwpname);
651 rc = lustre_start_simple(lwpname, LUSTRE_LWP_NAME,
652 lwpuuid, lustre_cfg_string(lcfg, 1),
655 CERROR("%s: setup up failed: rc %d\n", lwpname, rc);
659 obd = class_name2obd(lwpname);
660 LASSERT(obd != NULL);
662 rc = lustre_lwp_connect(obd);
664 obd->u.cli.cl_max_mds_easize = MAX_MD_SIZE;
665 spin_lock(&lsi->lsi_lwp_lock);
666 list_add_tail(&obd->obd_lwp_list, &lsi->lsi_lwp_list);
667 spin_unlock(&lsi->lsi_lwp_lock);
669 CERROR("%s: connect failed: rc = %d\n", lwpname, rc);
676 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
678 OBD_FREE(lwpuuid, MTI_NAME_MAXLEN);
683 /* the caller is responsible for memory free */
684 static struct obd_device *lustre_find_lwp(struct lustre_sb_info *lsi,
685 char **lwpname, __u32 idx)
687 struct obd_device *lwp;
691 LASSERT(lwpname != NULL);
692 LASSERT(IS_OST(lsi) || IS_MDT(lsi));
694 OBD_ALLOC(*lwpname, MTI_NAME_MAXLEN);
695 if (*lwpname == NULL)
696 RETURN(ERR_PTR(-ENOMEM));
698 rc = tgt_name2lwp_name(lsi->lsi_svname, *lwpname, MTI_NAME_MAXLEN, idx);
700 CERROR("%s: failed to generate lwp name: rc = %d\n",
701 lsi->lsi_svname, rc);
702 GOTO(out, rc = -EINVAL);
705 lwp = class_name2obd(*lwpname);
709 if (*lwpname != NULL) {
710 OBD_FREE(*lwpname, MTI_NAME_MAXLEN);
716 RETURN(lwp != NULL ? lwp : ERR_PTR(-ENOENT));
719 static int lustre_lwp_add_conn(struct lustre_cfg *cfg,
720 struct lustre_sb_info *lsi, __u32 idx)
722 struct lustre_cfg_bufs *bufs = NULL;
723 struct lustre_cfg *lcfg = NULL;
724 char *lwpname = NULL;
725 struct obd_device *lwp;
729 lwp = lustre_find_lwp(lsi, &lwpname, idx);
731 CERROR("%s: can't find lwp device.\n", lsi->lsi_svname);
732 GOTO(out, rc = PTR_ERR(lwp));
734 LASSERT(lwpname != NULL);
738 GOTO(out, rc = -ENOMEM);
740 lustre_cfg_bufs_reset(bufs, lwpname);
741 lustre_cfg_bufs_set_string(bufs, 1,
742 lustre_cfg_string(cfg, 1));
744 lcfg = lustre_cfg_new(LCFG_ADD_CONN, bufs);
746 GOTO(out_cfg, rc = -ENOMEM);
747 rc = class_add_conn(lwp, lcfg);
749 CERROR("%s: can't add conn: rc = %d\n", lwpname, rc);
752 lustre_cfg_free(lcfg);
758 OBD_FREE(lwpname, MTI_NAME_MAXLEN);
763 * Retrieve MDT nids from the client log, then start the lwp device.
764 * there are only two scenarios which would include mdt nid.
766 * marker 5 (flags=0x01, v2.1.54.0) lustre-MDTyyyy 'add mdc' xxx-
767 * add_uuid nid=192.168.122.162@tcp(0x20000c0a87aa2) 0: 1:192.168.122.162@tcp
768 * attach 0:lustre-MDTyyyy-mdc 1:mdc 2:lustre-clilmv_UUID
769 * setup 0:lustre-MDTyyyy-mdc 1:lustre-MDTyyyy_UUID 2:192.168.122.162@tcp
770 * add_uuid nid=192.168.172.1@tcp(0x20000c0a8ac01) 0: 1:192.168.172.1@tcp
771 * add_conn 0:lustre-MDTyyyy-mdc 1:192.168.172.1@tcp
772 * modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDTyyyy_UUID xxxx
773 * marker 5 (flags=0x02, v2.1.54.0) lustre-MDTyyyy 'add mdc' xxxx-
775 * marker 7 (flags=0x01, v2.1.54.0) lustre-MDTyyyy 'add failnid' xxxx-
776 * add_uuid nid=192.168.122.2@tcp(0x20000c0a87a02) 0: 1:192.168.122.2@tcp
777 * add_conn 0:lustre-MDTyyyy-mdc 1:192.168.122.2@tcp
778 * marker 7 (flags=0x02, v2.1.54.0) lustre-MDTyyyy 'add failnid' xxxx-
780 static int client_lwp_config_process(const struct lu_env *env,
781 struct llog_handle *handle,
782 struct llog_rec_hdr *rec, void *data)
784 struct config_llog_instance *clli = data;
785 int cfg_len = rec->lrh_len;
786 char *cfg_buf = (char *) (rec + 1);
787 struct lustre_cfg *lcfg = NULL;
788 struct lustre_sb_info *lsi;
789 int rc = 0, swab = 0;
792 if (rec->lrh_type != OBD_CFG_REC) {
793 CERROR("Unknown llog record type %#x encountered\n",
798 LASSERT(clli->cfg_sb != NULL);
799 lsi = s2lsi(clli->cfg_sb);
801 lcfg = (struct lustre_cfg *)cfg_buf;
802 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
803 lustre_swab_lustre_cfg(lcfg);
807 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
811 switch (lcfg->lcfg_command) {
813 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
815 lustre_swab_cfg_marker(marker, swab,
816 LUSTRE_CFG_BUFLEN(lcfg, 1));
817 if (marker->cm_flags & CM_SKIP ||
818 marker->cm_flags & CM_EXCLUDE)
821 if (!tgt_is_mdt(marker->cm_tgtname, &clli->cfg_lwp_idx))
824 if (IS_MDT(lsi) && clli->cfg_lwp_idx != 0)
827 if (!strncmp(marker->cm_comment, "add mdc", 7) ||
828 !strncmp(marker->cm_comment, "add failnid", 11)) {
829 if (marker->cm_flags & CM_START) {
830 clli->cfg_flags = CFG_F_MARKER;
831 /* This hack is to differentiate the
832 * ADD_UUID is come from "add mdc" record
833 * or from "add failnid" record. */
834 if (!strncmp(marker->cm_comment,
836 clli->cfg_flags |= CFG_F_SKIP;
837 } else if (marker->cm_flags & CM_END) {
843 case LCFG_ADD_UUID: {
844 if (clli->cfg_flags == CFG_F_MARKER) {
845 rc = lustre_lwp_setup(lcfg, lsi, clli->cfg_lwp_idx);
846 /* XXX: process only the first nid as
847 * we don't need another instance of lwp */
848 clli->cfg_flags |= CFG_F_SKIP;
849 } else if (clli->cfg_flags == (CFG_F_MARKER | CFG_F_SKIP)) {
850 rc = class_add_uuid(lustre_cfg_string(lcfg, 1),
853 CERROR("%s: Fail to add uuid, rc:%d\n",
854 lsi->lsi_svname, rc);
858 case LCFG_ADD_CONN: {
859 char *devname = lustre_cfg_string(lcfg, 0);
863 if (!is_mdc_device(devname))
866 ptr = strrchr(devname, '-');
871 if (!tgt_is_mdt(devname, &idx)) {
877 if (IS_MDT(lsi) && idx != 0)
880 rc = lustre_lwp_add_conn(lcfg, lsi, idx);
890 static int lustre_disconnect_lwp(struct super_block *sb)
892 struct lustre_sb_info *lsi = s2lsi(sb);
893 struct obd_device *lwp;
894 char *logname = NULL;
895 struct lustre_cfg_bufs *bufs = NULL;
896 struct config_llog_instance *cfg = NULL;
901 if (likely(lsi->lsi_lwp_started)) {
902 OBD_ALLOC(logname, MTI_NAME_MAXLEN);
906 rc = server_name2fsname(lsi->lsi_svname, logname, NULL);
908 CERROR("%s: failed to get fsname from svname: "
909 "rc = %d\n", lsi->lsi_svname, rc);
910 GOTO(out, rc = -EINVAL);
913 strcat(logname, "-client");
916 GOTO(out, rc = -ENOMEM);
919 cfg->cfg_instance = sb;
920 rc = lustre_end_log(sb, logname, cfg);
921 if (rc != 0 && rc != -ENOENT)
924 lsi->lsi_lwp_started = 0;
929 GOTO(out, rc = -ENOMEM);
931 list_for_each_entry(lwp, &lsi->lsi_lwp_list, obd_lwp_list) {
932 struct lustre_cfg *lcfg;
934 if (likely(lwp->obd_lwp_export != NULL)) {
935 class_export_put(lwp->obd_lwp_export);
936 lwp->obd_lwp_export = NULL;
939 lustre_cfg_bufs_reset(bufs, lwp->obd_name);
940 lustre_cfg_bufs_set_string(bufs, 1, NULL);
941 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
943 GOTO(out, rc = -ENOMEM);
945 /* Disconnect import first. NULL is passed for the '@env',
946 * since it will not be used. */
947 rc = lwp->obd_lu_dev->ld_ops->ldo_process_config(NULL,
948 lwp->obd_lu_dev, lcfg);
949 lustre_cfg_free(lcfg);
950 if (rc != 0 && rc != -ETIMEDOUT) {
951 CERROR("%s: fail to disconnect LWP: rc = %d\n",
965 OBD_FREE(logname, MTI_NAME_MAXLEN);
967 return rc1 != 0 ? rc1 : rc;
971 * Stop the lwp for an OST/MDT target.
973 static int lustre_stop_lwp(struct super_block *sb)
975 struct lustre_sb_info *lsi = s2lsi(sb);
976 struct obd_device *lwp;
981 while (!list_empty(&lsi->lsi_lwp_list)) {
982 lwp = list_entry(lsi->lsi_lwp_list.next, struct obd_device,
984 list_del_init(&lwp->obd_lwp_list);
986 rc = class_manual_cleanup(lwp);
988 CERROR("%s: fail to stop LWP: rc = %d\n",
994 RETURN(rc1 != 0 ? rc1 : rc);
998 * Start the lwp(fsname-MDTyyyy-lwp-{MDT,OST}xxxx) for a MDT/OST or MDT target.
1000 static int lustre_start_lwp(struct super_block *sb)
1002 struct lustre_sb_info *lsi = s2lsi(sb);
1003 struct config_llog_instance *cfg = NULL;
1008 if (unlikely(lsi->lsi_lwp_started))
1011 OBD_ALLOC(logname, MTI_NAME_MAXLEN);
1012 if (logname == NULL)
1015 rc = server_name2fsname(lsi->lsi_svname, logname, NULL);
1017 CERROR("%s: failed to get fsname from svname: rc = %d\n",
1018 lsi->lsi_svname, rc);
1019 GOTO(out, rc = -EINVAL);
1022 strcat(logname, "-client");
1025 GOTO(out, rc = -ENOMEM);
1027 cfg->cfg_callback = client_lwp_config_process;
1028 cfg->cfg_instance = sb;
1029 rc = lustre_process_log(sb, logname, cfg);
1030 /* need to remove config llog from mgc */
1031 lsi->lsi_lwp_started = 1;
1036 OBD_FREE(logname, MTI_NAME_MAXLEN);
1043 static DEFINE_MUTEX(server_start_lock);
1045 /* Stop MDS/OSS if nobody is using them */
1046 static int server_stop_servers(int lsiflags)
1048 struct obd_device *obd = NULL;
1049 struct obd_type *type = NULL;
1053 mutex_lock(&server_start_lock);
1055 /* Either an MDT or an OST or neither */
1056 /* if this was an MDT, and there are no more MDT's, clean up the MDS */
1057 if (lsiflags & LDD_F_SV_TYPE_MDT) {
1058 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
1060 type = class_search_type(LUSTRE_MDT_NAME);
1063 /* if this was an OST, and there are no more OST's, clean up the OSS */
1064 if (lsiflags & LDD_F_SV_TYPE_OST) {
1065 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
1067 type = class_search_type(LUSTRE_OST_NAME);
1070 if (obd != NULL && (type == NULL || type->typ_refcnt == 0)) {
1072 /* obd_fail doesn't mean much on a server obd */
1073 rc = class_manual_cleanup(obd);
1076 mutex_unlock(&server_start_lock);
1081 int server_mti_print(const char *title, struct mgs_target_info *mti)
1083 PRINT_CMD(PRINT_MASK, "mti %s\n", title);
1084 PRINT_CMD(PRINT_MASK, "server: %s\n", mti->mti_svname);
1085 PRINT_CMD(PRINT_MASK, "fs: %s\n", mti->mti_fsname);
1086 PRINT_CMD(PRINT_MASK, "uuid: %s\n", mti->mti_uuid);
1087 PRINT_CMD(PRINT_MASK, "ver: %d flags: %#x\n",
1088 mti->mti_config_ver, mti->mti_flags);
1092 /* Generate data for registration */
1093 static int server_lsi2mti(struct lustre_sb_info *lsi,
1094 struct mgs_target_info *mti)
1096 lnet_process_id_t id;
1101 if (!IS_SERVER(lsi))
1104 if (strlcpy(mti->mti_svname, lsi->lsi_svname, sizeof(mti->mti_svname))
1105 >= sizeof(mti->mti_svname))
1108 mti->mti_nid_count = 0;
1109 while (LNetGetId(i++, &id) != -ENOENT) {
1110 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
1113 /* server use --servicenode param, only allow specified
1114 * nids be registered */
1115 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) != 0 &&
1116 class_match_nid(lsi->lsi_lmd->lmd_params,
1117 PARAM_FAILNODE, id.nid) < 1)
1120 /* match specified network */
1121 if (!class_match_net(lsi->lsi_lmd->lmd_params,
1122 PARAM_NETWORK, LNET_NIDNET(id.nid)))
1125 mti->mti_nids[mti->mti_nid_count] = id.nid;
1126 mti->mti_nid_count++;
1127 if (mti->mti_nid_count >= MTI_NIDS_MAX) {
1128 CWARN("Only using first %d nids for %s\n",
1129 mti->mti_nid_count, mti->mti_svname);
1134 if (mti->mti_nid_count == 0) {
1135 CERROR("Failed to get NID for server %s, please check whether "
1136 "the target is specifed with improper --servicenode or "
1137 "--network options.\n", mti->mti_svname);
1141 mti->mti_lustre_ver = LUSTRE_VERSION_CODE;
1142 mti->mti_config_ver = 0;
1144 rc = server_name2fsname(lsi->lsi_svname, mti->mti_fsname, NULL);
1148 rc = server_name2index(lsi->lsi_svname, &mti->mti_stripe_index, NULL);
1151 /* Orion requires index to be set */
1152 LASSERT(!(rc & LDD_F_NEED_INDEX));
1153 /* keep only LDD flags */
1154 mti->mti_flags = lsi->lsi_flags & LDD_F_MASK;
1155 if (mti->mti_flags & (LDD_F_WRITECONF | LDD_F_VIRGIN))
1156 mti->mti_flags |= LDD_F_UPDATE;
1157 cplen = strlcpy(mti->mti_params, lsi->lsi_lmd->lmd_params,
1158 sizeof(mti->mti_params));
1159 if (cplen >= sizeof(mti->mti_params))
1164 /* Register an old or new target with the MGS. If needed MGS will construct
1165 startup logs and assign index */
1166 static int server_register_target(struct lustre_sb_info *lsi)
1168 struct obd_device *mgc = lsi->lsi_mgc;
1169 struct mgs_target_info *mti = NULL;
1176 if (!IS_SERVER(lsi))
1183 rc = server_lsi2mti(lsi, mti);
1187 CDEBUG(D_MOUNT, "Registration %s, fs=%s, %s, index=%04x, flags=%#x\n",
1188 mti->mti_svname, mti->mti_fsname,
1189 libcfs_nid2str(mti->mti_nids[0]), mti->mti_stripe_index,
1192 /* if write_conf is true, the registration must succeed */
1193 writeconf = !!(lsi->lsi_flags & (LDD_F_NEED_INDEX | LDD_F_UPDATE));
1194 mti->mti_flags |= LDD_F_OPC_REG;
1196 /* Register the target */
1197 /* FIXME use mgc_process_config instead */
1198 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1199 sizeof(KEY_REGISTER_TARGET),
1200 KEY_REGISTER_TARGET,
1201 sizeof(*mti), mti, NULL);
1203 if (mti->mti_flags & LDD_F_ERROR) {
1204 LCONSOLE_ERROR_MSG(0x160,
1205 "%s: the MGS refuses to allow this server "
1206 "to start: rc = %d. Please see messages on "
1207 "the MGS.\n", lsi->lsi_svname, rc);
1208 } else if (writeconf) {
1209 LCONSOLE_ERROR_MSG(0x15f,
1210 "%s: cannot register this server with the MGS: "
1211 "rc = %d. Is the MGS running?\n",
1212 lsi->lsi_svname, rc);
1214 CDEBUG(D_HA, "%s: error registering with the MGS: "
1215 "rc = %d (not fatal)\n", lsi->lsi_svname, rc);
1216 /* reset the error code for non-fatal error. */
1229 * Notify the MGS that this target is ready.
1230 * Used by IR - if the MGS receives this message, it will notify clients.
1232 static int server_notify_target(struct super_block *sb, struct obd_device *obd)
1234 struct lustre_sb_info *lsi = s2lsi(sb);
1235 struct obd_device *mgc = lsi->lsi_mgc;
1236 struct mgs_target_info *mti = NULL;
1242 if (!(IS_SERVER(lsi)))
1248 rc = server_lsi2mti(lsi, mti);
1252 mti->mti_instance = obd->u.obt.obt_instance;
1253 mti->mti_flags |= LDD_F_OPC_READY;
1255 /* FIXME use mgc_process_config instead */
1256 rc = obd_set_info_async(NULL, mgc->u.cli.cl_mgc_mgsexp,
1257 sizeof(KEY_REGISTER_TARGET),
1258 KEY_REGISTER_TARGET,
1259 sizeof(*mti), mti, NULL);
1261 /* Imperative recovery: if the mgs informs us to use IR? */
1262 if (!rc && !(mti->mti_flags & LDD_F_ERROR) &&
1263 (mti->mti_flags & LDD_F_IR_CAPABLE))
1264 lsi->lsi_flags |= LDD_F_IR_CAPABLE;
1273 /** Start server targets: MDTs and OSTs
1275 static int server_start_targets(struct super_block *sb)
1277 struct obd_device *obd;
1278 struct lustre_sb_info *lsi = s2lsi(sb);
1279 struct config_llog_instance cfg;
1280 struct lu_env mgc_env;
1281 struct lu_device *dev;
1285 CDEBUG(D_MOUNT, "starting target %s\n", lsi->lsi_svname);
1288 /* make sure the MDS is started */
1289 mutex_lock(&server_start_lock);
1290 obd = class_name2obd(LUSTRE_MDS_OBDNAME);
1292 rc = lustre_start_simple(LUSTRE_MDS_OBDNAME,
1294 LUSTRE_MDS_OBDNAME"_uuid",
1295 NULL, NULL, NULL, NULL);
1297 mutex_unlock(&server_start_lock);
1298 CERROR("failed to start MDS: %d\n", rc);
1302 mutex_unlock(&server_start_lock);
1305 /* If we're an OST, make sure the global OSS is running */
1307 /* make sure OSS is started */
1308 mutex_lock(&server_start_lock);
1309 obd = class_name2obd(LUSTRE_OSS_OBDNAME);
1311 rc = lustre_start_simple(LUSTRE_OSS_OBDNAME,
1313 LUSTRE_OSS_OBDNAME"_uuid",
1314 NULL, NULL, NULL, NULL);
1316 mutex_unlock(&server_start_lock);
1317 CERROR("failed to start OSS: %d\n", rc);
1321 mutex_unlock(&server_start_lock);
1324 rc = lu_env_init(&mgc_env, LCT_MG_THREAD);
1326 GOTO(out_stop_service, rc);
1328 /* Set the mgc fs to our server disk. This allows the MGC to
1329 * read and write configs locally, in case it can't talk to the MGS. */
1330 rc = server_mgc_set_fs(&mgc_env, lsi->lsi_mgc, sb);
1334 /* Register with MGS */
1335 rc = server_register_target(lsi);
1339 /* Let the target look up the mount using the target's name
1340 (we can't pass the sb or mnt through class_process_config.) */
1341 rc = server_register_mount(lsi->lsi_svname, sb);
1345 /* Start targets using the llog named for the target */
1346 memset(&cfg, 0, sizeof(cfg));
1347 cfg.cfg_callback = class_config_llog_handler;
1348 rc = lustre_process_log(sb, lsi->lsi_svname, &cfg);
1350 CERROR("failed to start server %s: %d\n",
1351 lsi->lsi_svname, rc);
1352 /* Do NOT call server_deregister_mount() here. This makes it
1353 * impossible to find mount later in cleanup time and leaves
1354 * @lsi and othder stuff leaked. -umka */
1358 obd = class_name2obd(lsi->lsi_svname);
1360 CERROR("no server named %s was started\n", lsi->lsi_svname);
1361 GOTO(out_mgc, rc = -ENXIO);
1364 if (IS_OST(lsi) || IS_MDT(lsi)) {
1365 rc = lustre_start_lwp(sb);
1367 CERROR("%s: failed to start LWP: %d\n",
1368 lsi->lsi_svname, rc);
1373 server_notify_target(sb, obd);
1375 /* calculate recovery timeout, do it after lustre_process_log */
1376 server_calc_timeout(lsi, obd);
1378 /* log has been fully processed */
1379 obd_notify(obd, NULL, OBD_NOTIFY_CONFIG, (void *)CONFIG_LOG);
1381 /* log has been fully processed, let clients connect */
1382 dev = obd->obd_lu_dev;
1383 if (dev && dev->ld_ops->ldo_prepare) {
1386 rc = lu_env_init(&env, dev->ld_type->ldt_ctx_tags);
1388 struct lu_context session_ctx;
1390 lu_context_init(&session_ctx, LCT_SERVER_SESSION);
1391 session_ctx.lc_thread = NULL;
1392 lu_context_enter(&session_ctx);
1393 env.le_ses = &session_ctx;
1395 rc = dev->ld_ops->ldo_prepare(&env, NULL, dev);
1398 lu_context_exit(&session_ctx);
1399 lu_context_fini(&session_ctx);
1403 /* abort recovery only on the complete stack:
1404 * many devices can be involved */
1405 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_ABORT_RECOV) &&
1406 (OBP(obd, iocontrol))) {
1407 obd_iocontrol(OBD_IOC_ABORT_RECOVERY, obd->obd_self_export, 0,
1412 /* Release the mgc fs for others to use */
1413 server_mgc_clear_fs(&mgc_env, lsi->lsi_mgc);
1415 lu_env_fini(&mgc_env);
1418 server_stop_servers(lsi->lsi_flags);
1423 static int lsi_prepare(struct lustre_sb_info *lsi)
1425 const char *osd_type;
1432 LASSERT(lsi->lsi_lmd);
1434 /* The server name is given as a mount line option */
1435 if (lsi->lsi_lmd->lmd_profile == NULL) {
1436 LCONSOLE_ERROR("Can't determine server name\n");
1440 /* Determine osd type */
1441 if (lsi->lsi_lmd->lmd_osd_type == NULL) {
1442 osd_type = LUSTRE_OSD_LDISKFS_NAME;
1445 osd_type = lsi->lsi_lmd->lmd_osd_type;
1446 fstype = lsi->lsi_lmd->lmd_osd_type;
1449 if (strlen(lsi->lsi_lmd->lmd_profile) >= sizeof(lsi->lsi_svname) ||
1450 strlen(osd_type) >= sizeof(lsi->lsi_osd_type) ||
1451 strlen(fstype) >= sizeof(lsi->lsi_fstype))
1452 RETURN(-ENAMETOOLONG);
1454 strlcpy(lsi->lsi_svname, lsi->lsi_lmd->lmd_profile,
1455 sizeof(lsi->lsi_svname));
1456 strlcpy(lsi->lsi_osd_type, osd_type, sizeof(lsi->lsi_osd_type));
1457 /* XXX: a temp. solution for components using ldiskfs
1458 * to be removed in one of the subsequent patches */
1459 strlcpy(lsi->lsi_fstype, fstype, sizeof(lsi->lsi_fstype));
1461 /* Determine server type */
1462 rc = server_name2index(lsi->lsi_svname, &index, NULL);
1464 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) {
1465 /* Assume we're a bare MGS */
1467 lsi->lsi_lmd->lmd_flags |= LMD_FLG_NOSVC;
1469 LCONSOLE_ERROR("Can't determine server type of '%s'\n",
1474 lsi->lsi_flags |= rc;
1476 /* Add mount line flags that used to be in ldd:
1477 * writeconf, mgs, anything else?
1479 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_WRITECONF) ?
1480 LDD_F_WRITECONF : 0;
1481 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_VIRGIN) ?
1483 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_UPDATE) ?
1485 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_MGS) ?
1486 LDD_F_SV_TYPE_MGS : 0;
1487 lsi->lsi_flags |= (lsi->lsi_lmd->lmd_flags & LMD_FLG_NO_PRIMNODE) ?
1488 LDD_F_NO_PRIMNODE : 0;
1493 /*************** server mount ******************/
1495 /** Start the shutdown of servers at umount.
1497 static void server_put_super(struct super_block *sb)
1499 struct lustre_sb_info *lsi = s2lsi(sb);
1500 struct obd_device *obd;
1501 char *tmpname, *extraname = NULL;
1503 int lsiflags = lsi->lsi_flags;
1506 LASSERT(IS_SERVER(lsi));
1508 tmpname_sz = strlen(lsi->lsi_svname) + 1;
1509 OBD_ALLOC(tmpname, tmpname_sz);
1510 memcpy(tmpname, lsi->lsi_svname, tmpname_sz);
1511 CDEBUG(D_MOUNT, "server put_super %s\n", tmpname);
1512 if (IS_MDT(lsi) && (lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC))
1513 snprintf(tmpname, tmpname_sz, "MGS");
1515 /* disconnect the lwp first to drain off the inflight request */
1516 if (IS_OST(lsi) || IS_MDT(lsi)) {
1519 rc = lustre_disconnect_lwp(sb);
1520 if (rc != 0 && rc != -ETIMEDOUT &&
1521 rc != -ENOTCONN && rc != -ESHUTDOWN)
1522 CWARN("%s: failed to disconnect lwp: rc= %d\n",
1526 /* Stop the target */
1527 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1528 (IS_MDT(lsi) || IS_OST(lsi))) {
1529 struct lustre_profile *lprof = NULL;
1531 /* tell the mgc to drop the config log */
1532 lustre_end_log(sb, lsi->lsi_svname, NULL);
1534 /* COMPAT_146 - profile may get deleted in mgc_cleanup.
1535 If there are any setup/cleanup errors, save the lov
1536 name for safety cleanup later. */
1537 lprof = class_get_profile(lsi->lsi_svname);
1538 if (lprof != NULL) {
1539 if (lprof->lp_dt != NULL) {
1540 OBD_ALLOC(extraname, strlen(lprof->lp_dt) + 1);
1541 strncpy(extraname, lprof->lp_dt,
1542 strlen(lprof->lp_dt) + 1);
1544 class_put_profile(lprof);
1547 obd = class_name2obd(lsi->lsi_svname);
1549 CDEBUG(D_MOUNT, "stopping %s\n", obd->obd_name);
1550 if (lsiflags & LSI_UMOUNT_FAILOVER)
1552 /* We can't seem to give an error return code
1553 * to .put_super, so we better make sure we clean up! */
1555 class_manual_cleanup(obd);
1557 CERROR("no obd %s\n", lsi->lsi_svname);
1558 server_deregister_mount(lsi->lsi_svname);
1562 /* If they wanted the mgs to stop separately from the mdt, they
1563 should have put it on a different device. */
1565 /* if MDS start with --nomgs, don't stop MGS then */
1566 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS))
1567 server_stop_mgs(sb);
1570 if (IS_OST(lsi) || IS_MDT(lsi)) {
1571 if (lustre_stop_lwp(sb) < 0)
1572 CERROR("%s: failed to stop lwp!\n", tmpname);
1575 /* Clean the mgc and sb */
1576 lustre_common_put_super(sb);
1578 /* wait till all in-progress cleanups are done
1579 * specifically we're interested in ofd cleanup
1581 obd_zombie_barrier();
1583 /* Stop the servers (MDS, OSS) if no longer needed. We must wait
1584 until the target is really gone so that our type refcount check
1586 server_stop_servers(lsiflags);
1588 /* In case of startup or cleanup err, stop related obds */
1590 obd = class_name2obd(extraname);
1592 CWARN("Cleaning orphaned obd %s\n", extraname);
1594 class_manual_cleanup(obd);
1596 OBD_FREE(extraname, strlen(extraname) + 1);
1599 LCONSOLE_WARN("server umount %s complete\n", tmpname);
1600 OBD_FREE(tmpname, tmpname_sz);
1604 /** Called only for 'umount -f'
1606 static void server_umount_begin(struct super_block *sb)
1608 struct lustre_sb_info *lsi = s2lsi(sb);
1611 CDEBUG(D_MOUNT, "umount -f\n");
1612 /* umount = failover
1614 no third way to do non-force, non-failover */
1615 lsi->lsi_flags &= ~LSI_UMOUNT_FAILOVER;
1619 static int server_statfs(struct dentry *dentry, struct kstatfs *buf)
1621 struct super_block *sb = dentry->d_sb;
1622 struct lustre_sb_info *lsi = s2lsi(sb);
1623 struct obd_statfs statfs;
1627 if (lsi->lsi_dt_dev) {
1628 rc = dt_statfs(NULL, lsi->lsi_dt_dev, &statfs);
1630 statfs_unpack(buf, &statfs);
1631 buf->f_type = sb->s_magic;
1637 buf->f_type = sb->s_magic;
1638 buf->f_bsize = sb->s_blocksize;
1644 buf->f_namelen = NAME_MAX;
1648 /** The operations we support directly on the superblock:
1649 * mount, umount, and df.
1651 static struct super_operations server_ops = {
1652 .put_super = server_put_super,
1653 .umount_begin = server_umount_begin, /* umount -f */
1654 .statfs = server_statfs,
1658 * Xattr support for Lustre servers
1660 static ssize_t lustre_getxattr(struct dentry *dentry, const char *name,
1661 void *buffer, size_t size)
1663 if (!selinux_is_enabled())
1668 static int lustre_setxattr(struct dentry *dentry, const char *name,
1669 const void *value, size_t size, int flags)
1674 static ssize_t lustre_listxattr(struct dentry *d_entry, char *name,
1680 static const struct inode_operations server_inode_operations = {
1681 .setxattr = lustre_setxattr,
1682 .getxattr = lustre_getxattr,
1683 .listxattr = lustre_listxattr,
1686 #define log2(n) ffz(~(n))
1687 #define LUSTRE_SUPER_MAGIC 0x0BD00BD1
1689 static int server_fill_super_common(struct super_block *sb)
1691 struct inode *root = NULL;
1694 CDEBUG(D_MOUNT, "Server sb, dev=%d\n", (int)sb->s_dev);
1696 sb->s_blocksize = 4096;
1697 sb->s_blocksize_bits = log2(sb->s_blocksize);
1698 sb->s_magic = LUSTRE_SUPER_MAGIC;
1699 sb->s_maxbytes = 0; /* we don't allow file IO on server mountpoints */
1700 sb->s_flags |= MS_RDONLY;
1701 sb->s_op = &server_ops;
1703 root = new_inode(sb);
1705 CERROR("Can't make root inode\n");
1709 /* returns -EIO for every operation */
1710 /* make_bad_inode(root); -- badness - can't umount */
1711 /* apparently we need to be a directory for the mount to finish */
1712 root->i_mode = S_IFDIR;
1713 root->i_op = &server_inode_operations;
1714 sb->s_root = d_make_root(root);
1716 CERROR("%s: can't make root dentry\n", sb->s_id);
1723 static int osd_start(struct lustre_sb_info *lsi, unsigned long mflags)
1725 struct lustre_mount_data *lmd = lsi->lsi_lmd;
1726 struct obd_device *obd;
1727 struct dt_device_param p;
1733 "Attempting to start %s, type=%s, lsifl=%x, mountfl=%lx\n",
1734 lsi->lsi_svname, lsi->lsi_osd_type, lsi->lsi_flags, mflags);
1736 sprintf(lsi->lsi_osd_obdname, "%s-osd", lsi->lsi_svname);
1737 strcpy(lsi->lsi_osd_uuid, lsi->lsi_osd_obdname);
1738 strcat(lsi->lsi_osd_uuid, "_UUID");
1739 sprintf(flagstr, "%lu:%lu", mflags, (unsigned long) lmd->lmd_flags);
1741 obd = class_name2obd(lsi->lsi_osd_obdname);
1743 rc = lustre_start_simple(lsi->lsi_osd_obdname,
1745 lsi->lsi_osd_uuid, lmd->lmd_dev,
1746 flagstr, lsi->lsi_lmd->lmd_opts,
1750 obd = class_name2obd(lsi->lsi_osd_obdname);
1753 CDEBUG(D_MOUNT, "%s already started\n", lsi->lsi_osd_obdname);
1754 /* but continue setup to allow special case of MDT and internal
1755 * MGT being started separately. */
1756 if (!((IS_MGS(lsi) && (lsi->lsi_lmd->lmd_flags &
1758 (IS_MDT(lsi) && (lsi->lsi_lmd->lmd_flags &
1763 rc = obd_connect(NULL, &lsi->lsi_osd_exp,
1764 obd, &obd->obd_uuid, NULL, NULL);
1768 class_manual_cleanup(obd);
1769 lsi->lsi_dt_dev = NULL;
1773 LASSERT(obd->obd_lu_dev);
1774 lu_device_get(obd->obd_lu_dev);
1775 lsi->lsi_dt_dev = lu2dt_dev(obd->obd_lu_dev);
1776 LASSERT(lsi->lsi_dt_dev);
1778 /* set disk context for llog usage */
1779 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1780 obd->obd_lvfs_ctxt.dt = lsi->lsi_dt_dev;
1782 dt_conf_get(NULL, lsi->lsi_dt_dev, &p);
1787 /** Fill in the superblock info for a Lustre server.
1788 * Mount the device with the correct options.
1789 * Read the on-disk config file.
1790 * Start the services.
1792 int server_fill_super(struct super_block *sb)
1794 struct lustre_sb_info *lsi = s2lsi(sb);
1798 /* to simulate target mount race */
1799 OBD_RACE(OBD_FAIL_TGT_MOUNT_RACE);
1801 rc = lsi_prepare(lsi);
1805 /* Start low level OSD */
1806 rc = osd_start(lsi, sb->s_flags);
1808 CERROR("Unable to start osd on %s: %d\n",
1809 lsi->lsi_lmd->lmd_dev, rc);
1814 CDEBUG(D_MOUNT, "Found service %s on device %s\n",
1815 lsi->lsi_svname, lsi->lsi_lmd->lmd_dev);
1817 if (class_name2obd(lsi->lsi_svname)) {
1818 LCONSOLE_ERROR_MSG(0x161, "The target named %s is already "
1819 "running. Double-mount may have compromised"
1820 " the disk journal.\n",
1826 /* Start MGS before MGC */
1827 if (IS_MGS(lsi) && !(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOMGS)) {
1828 rc = server_start_mgs(sb);
1833 /* Start MGC before servers */
1834 rc = lustre_start_mgc(sb);
1838 /* Set up all obd devices for service */
1839 if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOSVC) &&
1840 (IS_OST(lsi) || IS_MDT(lsi))) {
1841 rc = server_start_targets(sb);
1843 CERROR("Unable to start targets: %d\n", rc);
1846 /* FIXME overmount client here, or can we just start a
1847 * client log and client_fill_super on this sb? We
1848 * need to make sure server_put_super gets called too
1849 * - ll_put_super calls lustre_common_put_super; check
1850 * there for LSI_SERVER flag, call s_p_s if so.
1852 * Probably should start client from new thread so we
1853 * can return. Client will not finish until all
1854 * servers are connected. Note - MGS-only server does
1855 * NOT get a client, since there is no lustre fs
1856 * associated - the MGS is for all lustre fs's */
1859 rc = server_fill_super_common(sb);
1865 /* We jump here in case of failure while starting targets or MGS.
1866 * In this case we can't just put @mnt and have to do real cleanup
1867 * with stoping targets, etc. */
1868 server_put_super(sb);
1873 * Calculate timeout value for a target.
1875 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd)
1877 struct lustre_mount_data *lmd;
1881 bool has_ir = !!(lsi->lsi_flags & LDD_F_IR_CAPABLE);
1882 int min = OBD_RECOVERY_TIME_MIN;
1884 LASSERT(IS_SERVER(lsi));
1888 soft = lmd->lmd_recovery_time_soft;
1889 hard = lmd->lmd_recovery_time_hard;
1890 has_ir = has_ir && !(lmd->lmd_flags & LMD_FLG_NOIR);
1891 obd->obd_no_ir = !has_ir;
1895 soft = OBD_RECOVERY_TIME_SOFT;
1897 hard = OBD_RECOVERY_TIME_HARD;
1899 /* target may have ir_factor configured. */
1900 factor = OBD_IR_FACTOR_DEFAULT;
1901 if (obd->obd_recovery_ir_factor)
1902 factor = obd->obd_recovery_ir_factor;
1905 int new_soft = soft;
1906 int new_hard = hard;
1908 /* adjust timeout value by imperative recovery */
1910 new_soft = (soft * factor) / OBD_IR_FACTOR_MAX;
1911 new_hard = (hard * factor) / OBD_IR_FACTOR_MAX;
1913 /* make sure the timeout is not too short */
1914 new_soft = max(min, new_soft);
1915 new_hard = max(new_soft, new_hard);
1917 LCONSOLE_INFO("%s: Imperative Recovery enabled, recovery "
1918 "window shrunk from %d-%d down to %d-%d\n",
1919 obd->obd_name, soft, hard, new_soft, new_hard);
1926 obd->obd_recovery_timeout = max(obd->obd_recovery_timeout, soft);
1927 obd->obd_recovery_time_hard = hard;
1928 obd->obd_recovery_ir_factor = factor;