/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ /* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * * lustre/obdclass/obd_mount.c * * Client mount routines * * Author: Nathan Rutman */ #define DEBUG_SUBSYSTEM S_CLASS #define D_MOUNT (D_SUPER|D_CONFIG/*|D_WARNING */) #define PRINT_CMD CDEBUG #include #include #include #include #include #include #include #include #include #include #include /**************** config llog ********************/ /** * Get a config log from the MGS and process it. * This func is called for both clients and servers. * Continue to process new statements appended to the logs * (whenever the config lock is revoked) until lustre_end_log * is called. * * @param sb The superblock is used by the MGC to write to the local copy of * the config log * @param logname The name of the llog to replicate from the MGS * @param cfg Since the same MGC may be used to follow multiple config logs * (e.g. ost1, ost2, client), the config_llog_instance keeps the state for * this log, and is added to the mgc's list of logs to follow. */ int lustre_process_log(struct super_block *sb, char *logname, struct config_llog_instance *cfg) { struct lustre_cfg *lcfg; struct lustre_cfg_bufs *bufs; struct lustre_sb_info *lsi = s2lsi(sb); struct obd_device *mgc = lsi->lsi_mgc; int rc; ENTRY; LASSERT(mgc); LASSERT(cfg); OBD_ALLOC_PTR(bufs); if (bufs == NULL) RETURN(-ENOMEM); /* mgc_process_config */ lustre_cfg_bufs_reset(bufs, mgc->obd_name); lustre_cfg_bufs_set_string(bufs, 1, logname); lustre_cfg_bufs_set(bufs, 2, cfg, sizeof(*cfg)); lustre_cfg_bufs_set(bufs, 3, &sb, sizeof(sb)); OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen)); if (!lcfg) GOTO(out, rc = -ENOMEM); lustre_cfg_init(lcfg, LCFG_LOG_START, bufs); rc = obd_process_config(mgc, sizeof(*lcfg), lcfg); OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens)); out: OBD_FREE_PTR(bufs); if (rc == -EINVAL) LCONSOLE_ERROR_MSG(0x15b, "%s: Configuration from log %s failed from MGS %d. Check client and MGS are on compatible version.\n", mgc->obd_name, logname, rc); else if (rc != 0) LCONSOLE_ERROR_MSG(0x15c, "%s: Confguration from log %s failed from MGS %d. Communication error between node & MGS, a bad configuration, or other errors. See syslog for more info\n", mgc->obd_name, logname, rc); RETURN(rc); } EXPORT_SYMBOL(lustre_process_log); /* Stop watching this config log for updates */ int lustre_end_log(struct super_block *sb, char *logname, struct config_llog_instance *cfg) { struct lustre_cfg *lcfg; struct lustre_cfg_bufs bufs; struct lustre_sb_info *lsi = s2lsi(sb); struct obd_device *mgc = lsi->lsi_mgc; int rc; ENTRY; if (!mgc) RETURN(-ENOENT); /* mgc_process_config */ lustre_cfg_bufs_reset(&bufs, mgc->obd_name); lustre_cfg_bufs_set_string(&bufs, 1, logname); if (cfg) lustre_cfg_bufs_set(&bufs, 2, cfg, sizeof(*cfg)); OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen)); if (!lcfg) RETURN(-ENOMEM); lustre_cfg_init(lcfg, LCFG_LOG_END, &bufs); rc = obd_process_config(mgc, sizeof(*lcfg), lcfg); OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens)); RETURN(rc); } EXPORT_SYMBOL(lustre_end_log); /**************** OBD start *******************/ /** * lustre_cfg_bufs are a holdover from 1.4; we can still set these up from * lctl (and do for echo cli/srv. */ static int do_lcfg(char *cfgname, lnet_nid_t nid, int cmd, char *s1, char *s2, char *s3, char *s4) { struct lustre_cfg_bufs bufs; struct lustre_cfg *lcfg = NULL; int rc; CDEBUG(D_TRACE, "lcfg %s %#x %s %s %s %s\n", cfgname, cmd, s1, s2, s3, s4); lustre_cfg_bufs_reset(&bufs, cfgname); if (s1) lustre_cfg_bufs_set_string(&bufs, 1, s1); if (s2) lustre_cfg_bufs_set_string(&bufs, 2, s2); if (s3) lustre_cfg_bufs_set_string(&bufs, 3, s3); if (s4) lustre_cfg_bufs_set_string(&bufs, 4, s4); OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen)); if (!lcfg) return -ENOMEM; lustre_cfg_init(lcfg, cmd, &bufs); lcfg->lcfg_nid = nid; rc = class_process_config(lcfg); OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens)); return rc; } static int do_lcfg_nid(char *cfgname, struct lnet_nid *nid, int cmd, char *s1) { lnet_nid_t nid4 = 0; char *nidstr = NULL; if (nid_is_nid4(nid)) nid4 = lnet_nid_to_nid4(nid); else nidstr = libcfs_nidstr(nid); return do_lcfg(cfgname, nid4, cmd, s1, nidstr, NULL, NULL); } /** * Call class_attach and class_setup. These methods in turn call * OBD type-specific methods. */ int lustre_start_simple(char *obdname, char *type, char *uuid, char *s1, char *s2, char *s3, char *s4) { int rc; CDEBUG(D_MOUNT, "Starting OBD %s (typ=%s)\n", obdname, type); rc = do_lcfg(obdname, 0, LCFG_ATTACH, type, uuid, NULL, NULL); if (rc) { CERROR("%s attach error %d\n", obdname, rc); return rc; } rc = do_lcfg(obdname, 0, LCFG_SETUP, s1, s2, s3, s4); if (rc) { CERROR("%s setup error %d\n", obdname, rc); do_lcfg(obdname, 0, LCFG_DETACH, NULL, NULL, NULL, NULL); } return rc; } EXPORT_SYMBOL(lustre_start_simple); static DEFINE_MUTEX(mgc_start_lock); /** * Set up a MGC OBD to process startup logs * * \param sb [in] super block of the MGC OBD * * \retval 0 success, otherwise error code */ int lustre_start_mgc(struct super_block *sb) { struct obd_connect_data *data = NULL; struct lustre_sb_info *lsi = s2lsi(sb); struct obd_device *obd; struct obd_export *exp; struct obd_uuid *uuid = NULL; uuid_t uuidc; struct lnet_nid nid; char nidstr[LNET_NIDSTR_SIZE]; char *mgcname = NULL, *niduuid = NULL, *mgssec = NULL; char *ptr; int rc = 0, i = 0, j; size_t len; ENTRY; LASSERT(lsi->lsi_lmd); /* Find the first non-lo MGS NID for our MGC name */ if (IS_SERVER(lsi)) { /* mount -o mgsnode=nid */ ptr = lsi->lsi_lmd->lmd_mgs; if (lsi->lsi_lmd->lmd_mgs && (class_parse_nid(lsi->lsi_lmd->lmd_mgs, &nid, &ptr) == 0)) { i++; } else if (IS_MGS(lsi)) { struct lnet_processid id; while ((rc = LNetGetId(i++, &id, true)) != -ENOENT) { if (nid_is_lo0(&id.nid)) continue; nid = id.nid; i++; break; } } } else { /* client */ /* Use NIDs from mount line: uml1,1@elan:uml2,2@elan:/lustre */ ptr = lsi->lsi_lmd->lmd_dev; if (class_parse_nid(ptr, &nid, &ptr) == 0) i++; } if (i == 0) { CERROR("No valid MGS NIDs found.\n"); RETURN(-EINVAL); } mutex_lock(&mgc_start_lock); libcfs_nidstr_r(&nid, nidstr, sizeof(nidstr)); len = strlen(LUSTRE_MGC_OBDNAME) + strlen(nidstr) + 1; OBD_ALLOC(mgcname, len); OBD_ALLOC(niduuid, len + 2); if (mgcname == NULL || niduuid == NULL) GOTO(out_free, rc = -ENOMEM); snprintf(mgcname, len, "%s%s", LUSTRE_MGC_OBDNAME, nidstr); mgssec = lsi->lsi_lmd->lmd_mgssec ? lsi->lsi_lmd->lmd_mgssec : ""; OBD_ALLOC_PTR(data); if (data == NULL) GOTO(out_free, rc = -ENOMEM); obd = class_name2obd(mgcname); if (obd && !obd->obd_stopping) { int recov_bk; rc = obd_set_info_async(NULL, obd->obd_self_export, strlen(KEY_MGSSEC), KEY_MGSSEC, strlen(mgssec), mgssec, NULL); if (rc) GOTO(out_free, rc); /* Re-using an existing MGC */ atomic_inc(&obd->u.cli.cl_mgc_refcount); /* IR compatibility check, only for clients */ if (lmd_is_client(lsi->lsi_lmd)) { int has_ir; int vallen = sizeof(*data); rc = obd_get_info(NULL, obd->obd_self_export, strlen(KEY_CONN_DATA), KEY_CONN_DATA, &vallen, data); LASSERT(rc == 0); has_ir = OCD_HAS_FLAG(data, IMP_RECOV); if (has_ir ^ !test_bit(LMD_FLG_NOIR, lsi->lsi_lmd->lmd_flags)) { /* LMD_FLG_NOIR is for test purpose only */ LCONSOLE_WARN( "Mounting client with IR setting not compatible with current MGC. Using MGC setting that is IR %s", has_ir ? "enabled" : "disabled"); if (has_ir) { clear_bit(LMD_FLG_NOIR, lsi->lsi_lmd->lmd_flags); } else { set_bit(LMD_FLG_NOIR, lsi->lsi_lmd->lmd_flags); } } } recov_bk = 0; /* * If we are restarting the MGS, don't try to keep the MGC's * old connection, or registration will fail. */ if (IS_MGS(lsi)) { CDEBUG(D_MOUNT, "New MGS with live MGC\n"); recov_bk = 1; } /* * Try all connections, but only once (again). * We don't want to block another target from starting * (using its local copy of the log), but we do want to connect * if at all possible. */ recov_bk++; CDEBUG(D_MOUNT, "%s:Set MGC reconnect %d\n", mgcname, recov_bk); rc = obd_set_info_async(NULL, obd->obd_self_export, sizeof(KEY_INIT_RECOV_BACKUP), KEY_INIT_RECOV_BACKUP, sizeof(recov_bk), &recov_bk, NULL); GOTO(out, rc = 0); } CDEBUG(D_MOUNT, "Start MGC '%s'\n", mgcname); /* Add the primary NIDs for the MGS */ i = 0; snprintf(niduuid, len + 2, "%s_%x", mgcname, i); if (IS_SERVER(lsi)) { ptr = lsi->lsi_lmd->lmd_mgs; CDEBUG(D_MOUNT, "mgs NIDs %s.\n", ptr); if (IS_MGS(lsi)) { /* Use local NIDs (including LO) */ struct lnet_processid id; while ((rc = LNetGetId(i++, &id, true)) != -ENOENT) { rc = do_lcfg_nid(mgcname, &id.nid, LCFG_ADD_UUID, niduuid); } } else { /* Use mgsnode= nids */ /* mount -o mgsnode=nid */ if (lsi->lsi_lmd->lmd_mgs) { ptr = lsi->lsi_lmd->lmd_mgs; } else if (class_find_param(ptr, PARAM_MGSNODE, &ptr) != 0) { CERROR("No MGS NIDs given.\n"); GOTO(out_free, rc = -EINVAL); } /* * Add primary MGS NID(s). * Multiple NIDs on one MGS node are separated * by commas. */ while (class_parse_nid(ptr, &nid, &ptr) == 0) { rc = do_lcfg_nid(mgcname, &nid, LCFG_ADD_UUID, niduuid); if (rc == 0) ++i; /* Stop at the first failover NID */ if (*ptr == ':') break; } } } else { /* client */ /* Use NIDs from mount line: uml1,1@elan:uml2,2@elan:/lustre */ ptr = lsi->lsi_lmd->lmd_dev; while (class_parse_nid(ptr, &nid, &ptr) == 0) { rc = do_lcfg_nid(mgcname, &nid, LCFG_ADD_UUID, niduuid); if (rc == 0) ++i; /* Stop at the first failover NID */ if (*ptr == ':') break; } } if (i == 0) { CERROR("No valid MGS NIDs found.\n"); GOTO(out_free, rc = -EINVAL); } lsi->lsi_lmd->lmd_mgs_failnodes = 1; /* Random uuid for MGC allows easier reconnects */ OBD_ALLOC_PTR(uuid); if (uuid == NULL) GOTO(out_free, rc = -ENOMEM); generate_random_uuid(uuidc.b); snprintf(uuid->uuid, sizeof(*uuid), "%pU", uuidc.b); /* Start the MGC */ rc = lustre_start_simple(mgcname, LUSTRE_MGC_NAME, (char *)uuid->uuid, LUSTRE_MGS_OBDNAME, niduuid, NULL, NULL); if (rc) GOTO(out_free, rc); /* Add any failover MGS NIDs */ i = 1; while (ptr && ((*ptr == ':' || class_find_param(ptr, PARAM_MGSNODE, &ptr) == 0))) { /* New failover node */ sprintf(niduuid, "%s_%x", mgcname, i); j = 0; while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) { rc = do_lcfg_nid(mgcname, &nid, LCFG_ADD_UUID, niduuid); if (rc == 0) ++j; if (*ptr == ':') break; } if (j > 0) { rc = do_lcfg(mgcname, 0, LCFG_ADD_CONN, niduuid, NULL, NULL, NULL); if (rc == 0) ++i; } else { /* at ":/fsname" */ break; } } lsi->lsi_lmd->lmd_mgs_failnodes = i; obd = class_name2obd(mgcname); if (!obd) { CERROR("Can't find mgcobd %s\n", mgcname); GOTO(out_free, rc = -ENOTCONN); } rc = obd_set_info_async(NULL, obd->obd_self_export, strlen(KEY_MGSSEC), KEY_MGSSEC, strlen(mgssec), mgssec, NULL); if (rc) GOTO(out_free, rc); /* * Keep a refcount of servers/clients who started with "mount", * so we know when we can get rid of the mgc. */ atomic_set(&obd->u.cli.cl_mgc_refcount, 1); /* We connect to the MGS at setup, and don't disconnect until cleanup */ data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_AT | OBD_CONNECT_FULL20 | OBD_CONNECT_IMP_RECOV | OBD_CONNECT_LVB_TYPE | OBD_CONNECT_BULK_MBITS | OBD_CONNECT_BARRIER | OBD_CONNECT_FLAGS2; data->ocd_connect_flags2 = OBD_CONNECT2_REP_MBITS | OBD_CONNECT2_LARGE_NID; if (lmd_is_client(lsi->lsi_lmd) && test_bit(LMD_FLG_NOIR, lsi->lsi_lmd->lmd_flags)) data->ocd_connect_flags &= ~OBD_CONNECT_IMP_RECOV; data->ocd_version = LUSTRE_VERSION_CODE; rc = obd_connect(NULL, &exp, obd, uuid, data, NULL); if (rc) { CERROR("connect failed %d\n", rc); GOTO(out, rc); } obd->u.cli.cl_mgc_mgsexp = exp; out: /* * Keep the MGC info in the sb. Note that many lsi's can point * to the same mgc. */ lsi->lsi_mgc = obd; out_free: mutex_unlock(&mgc_start_lock); if (uuid) OBD_FREE_PTR(uuid); if (data) OBD_FREE_PTR(data); if (mgcname) OBD_FREE(mgcname, len); if (niduuid) OBD_FREE(niduuid, len + 2); RETURN(rc); } EXPORT_SYMBOL(lustre_start_mgc); int lustre_stop_mgc(struct super_block *sb) { struct lustre_sb_info *lsi = s2lsi(sb); struct obd_device *obd; char niduuid[MAX_OBD_NAME + 6], *ptr = NULL; int i, rc = 0; ENTRY; if (!lsi) RETURN(-ENOENT); obd = lsi->lsi_mgc; if (!obd) RETURN(-ENOENT); lsi->lsi_mgc = NULL; mutex_lock(&mgc_start_lock); LASSERT(atomic_read(&obd->u.cli.cl_mgc_refcount) > 0); if (!atomic_dec_and_test(&obd->u.cli.cl_mgc_refcount)) { /* * This is not fatal, every client that stops * will call in here. */ CDEBUG(D_MOUNT, "MGC still has %d references.\n", atomic_read(&obd->u.cli.cl_mgc_refcount)); GOTO(out, rc = -EBUSY); } /* * The MGC has no recoverable data in any case. * force shotdown set in umount_begin */ obd->obd_no_recov = 1; if (obd->u.cli.cl_mgc_mgsexp) { /* * An error is not fatal, if we are unable to send the * disconnect mgs ping evictor cleans up the export */ rc = obd_disconnect(obd->u.cli.cl_mgc_mgsexp); if (rc) CDEBUG(D_MOUNT, "disconnect failed %d\n", rc); } /* * Cache the obdname for cleaning the nid uuids, which are * obdname_XX before calling class_manual_cleanup */ strcpy(niduuid, obd->obd_name); ptr = niduuid + strlen(niduuid); rc = class_manual_cleanup(obd); if (rc) GOTO(out, rc); for (i = 0; i < lsi->lsi_lmd->lmd_mgs_failnodes; i++) { sprintf(ptr, "_%x", i); rc = do_lcfg(LUSTRE_MGC_OBDNAME, 0, LCFG_DEL_UUID, niduuid, NULL, NULL, NULL); if (rc) CERROR("del MDC UUID %s failed: rc = %d\n", niduuid, rc); } out: /* class_import_put will get rid of the additional connections */ mutex_unlock(&mgc_start_lock); RETURN(rc); } EXPORT_SYMBOL(lustre_stop_mgc); /***************** lustre superblock **************/ struct lustre_sb_info *lustre_init_lsi(struct super_block *sb) { struct lustre_sb_info *lsi; ENTRY; OBD_ALLOC_PTR(lsi); if (!lsi) RETURN(NULL); OBD_ALLOC_PTR(lsi->lsi_lmd); if (!lsi->lsi_lmd) { OBD_FREE_PTR(lsi); RETURN(NULL); } s2lsi_nocast(sb) = lsi; /* we take 1 extra ref for our setup */ kref_init(&lsi->lsi_mounts); /* Default umount style */ lsi->lsi_flags = LSI_UMOUNT_FAILOVER; INIT_LIST_HEAD(&lsi->lsi_lwp_list); mutex_init(&lsi->lsi_lwp_mutex); RETURN(lsi); } EXPORT_SYMBOL(lustre_init_lsi); static int lustre_free_lsi(struct lustre_sb_info *lsi) { ENTRY; LASSERT(lsi != NULL); CDEBUG(D_MOUNT, "Freeing lsi %p\n", lsi); /* someone didn't call server_put_mount. */ LASSERT(kref_read(&lsi->lsi_mounts) == 0); llcrypt_sb_free(lsi); if (lsi->lsi_lmd != NULL) { if (lsi->lsi_lmd->lmd_dev != NULL) OBD_FREE(lsi->lsi_lmd->lmd_dev, strlen(lsi->lsi_lmd->lmd_dev) + 1); if (lsi->lsi_lmd->lmd_profile != NULL) OBD_FREE(lsi->lsi_lmd->lmd_profile, strlen(lsi->lsi_lmd->lmd_profile) + 1); if (lsi->lsi_lmd->lmd_fileset != NULL) OBD_FREE(lsi->lsi_lmd->lmd_fileset, strlen(lsi->lsi_lmd->lmd_fileset) + 1); if (lsi->lsi_lmd->lmd_mgssec != NULL) OBD_FREE(lsi->lsi_lmd->lmd_mgssec, strlen(lsi->lsi_lmd->lmd_mgssec) + 1); if (lsi->lsi_lmd->lmd_opts != NULL) OBD_FREE(lsi->lsi_lmd->lmd_opts, strlen(lsi->lsi_lmd->lmd_opts) + 1); if (lsi->lsi_lmd->lmd_exclude_count) OBD_FREE(lsi->lsi_lmd->lmd_exclude, sizeof(lsi->lsi_lmd->lmd_exclude[0]) * lsi->lsi_lmd->lmd_exclude_count); if (lsi->lsi_lmd->lmd_mgs != NULL) OBD_FREE(lsi->lsi_lmd->lmd_mgs, strlen(lsi->lsi_lmd->lmd_mgs) + 1); if (lsi->lsi_lmd->lmd_osd_type != NULL) OBD_FREE(lsi->lsi_lmd->lmd_osd_type, strlen(lsi->lsi_lmd->lmd_osd_type) + 1); if (lsi->lsi_lmd->lmd_params != NULL) OBD_FREE(lsi->lsi_lmd->lmd_params, 4096); if (lsi->lsi_lmd->lmd_nidnet != NULL) OBD_FREE(lsi->lsi_lmd->lmd_nidnet, strlen(lsi->lsi_lmd->lmd_nidnet) + 1); OBD_FREE_PTR(lsi->lsi_lmd); } LASSERT(lsi->lsi_llsbi == NULL); OBD_FREE_PTR(lsi); RETURN(0); } static void lustre_put_lsi_free(struct kref *kref) { struct lustre_sb_info *lsi = container_of(kref, struct lustre_sb_info, lsi_mounts); if (IS_SERVER(lsi) && lsi->lsi_osd_exp) { lu_device_put(&lsi->lsi_dt_dev->dd_lu_dev); lsi->lsi_osd_exp->exp_obd->obd_lvfs_ctxt.dt = NULL; lsi->lsi_dt_dev = NULL; obd_disconnect(lsi->lsi_osd_exp); /* wait till OSD is gone */ obd_zombie_barrier(); } lustre_free_lsi(lsi); } /* * The lsi has one reference for every server that is using the disk - * e.g. MDT, MGS, and potentially MGC */ int lustre_put_lsi(struct super_block *sb) { struct lustre_sb_info *lsi = s2lsi(sb); ENTRY; LASSERT(lsi != NULL); CDEBUG(D_MOUNT, "put %p %d\n", sb, kref_read(&lsi->lsi_mounts)); if (kref_put(&lsi->lsi_mounts, lustre_put_lsi_free)) { s2lsi_nocast(sb) = NULL; RETURN(1); } RETURN(0); } EXPORT_SYMBOL(lustre_put_lsi); /* * The goal of this function is to extract the file system name * from the OBD name. This can come in two flavors. One is * fsname-MDTXXXX or fsname-XXXXXXX were X is a hexadecimal * number. In both cases we should return fsname. If it is * not a valid OBD name it is assumed to be the file system * name itself. */ void obdname2fsname(const char *tgt, char *fsname, size_t buflen) { const char *ptr; const char *tmp; size_t len = 0; /* * First we have to see if the @tgt has '-' at all. It is * valid for the user to request something like * lctl set_param -P llite.lustre*.xattr_cache=0 */ ptr = strrchr(tgt, '-'); if (!ptr) { /* No '-' means it could end in '*' */ ptr = strchr(tgt, '*'); if (!ptr) { /* No '*' either. Assume tgt = fsname */ len = strlen(tgt); goto valid_obd_name; } len = ptr - tgt; goto valid_obd_name; } /* tgt format fsname-MDT0000-* */ if ((!strncmp(ptr, "-MDT", 4) || !strncmp(ptr, "-OST", 4)) && (isxdigit(ptr[4]) && isxdigit(ptr[5]) && isxdigit(ptr[6]) && isxdigit(ptr[7]))) { len = ptr - tgt; goto valid_obd_name; } /* * tgt_format fsname-cli'dev'-'uuid' except for the llite case * which are named fsname-'uuid'. Examples: * * lustre-clilov-ffff88104db5b800 * lustre-ffff88104db5b800 (for llite device) * * The length of the OBD uuid can vary on different platforms. * This test if any invalid characters are in string. Allow * wildcards with '*' character. */ ptr++; if (!strspn(ptr, "0123456789abcdefABCDEF*")) { len = 0; goto no_fsname; } /* * Now that we validated the device name lets extract the * file system name. Most of the names in this class will * have '-cli' in its name which needs to be dropped. If * it doesn't have '-cli' then its a llite device which * ptr already points to the start of the uuid string. */ tmp = strstr(tgt, "-cli"); if (tmp) ptr = tmp; else ptr--; len = ptr - tgt; valid_obd_name: len = min_t(size_t, len, LUSTRE_MAXFSNAME); snprintf(fsname, buflen, "%.*s", (int)len, tgt); no_fsname: fsname[len] = '\0'; } EXPORT_SYMBOL(obdname2fsname); /** * SERVER NAME *** * * FSNAME is between 1 and 8 characters (inclusive). * Excluded characters are '/' and ':' * SEPARATOR is either ':' or '-' * TYPE: "OST", "MDT", etc. * INDEX: Hex representation of the index */ /** * Get the fsname ("lustre") from the server name ("lustre-OST003F"). * @param [in] svname server name including type and index * @param [out] fsname Buffer to copy filesystem name prefix into. * Must have at least 'strlen(fsname) + 1' chars. * @param [out] endptr if endptr isn't NULL it is set to end of fsname * rc < 0 on error */ int server_name2fsname(const char *svname, char *fsname, const char **endptr) { const char *dash; dash = svname + strnlen(svname, LUSTRE_MAXFSNAME); for (; dash > svname && *dash != '-' && *dash != ':'; dash--) ; if (dash == svname) return -EINVAL; if (fsname != NULL) { strncpy(fsname, svname, dash - svname); fsname[dash - svname] = '\0'; } if (endptr != NULL) *endptr = dash; return 0; } EXPORT_SYMBOL(server_name2fsname); #ifdef HAVE_SERVER_SUPPORT /** * Get service name (svname) from string * rc < 0 on error * if endptr isn't NULL it is set to end of fsname * */ int server_name2svname(const char *label, char *svname, const char **endptr, size_t svsize) { int rc; const char *dash; /* We use server_name2fsname() just for parsing */ rc = server_name2fsname(label, NULL, &dash); if (rc != 0) return rc; if (endptr != NULL) *endptr = dash; rc = strscpy(svname, dash + 1, svsize); if (rc < 0) return rc; return 0; } EXPORT_SYMBOL(server_name2svname); #endif /* HAVE_SERVER_SUPPORT */ /** * check server name is OST. **/ int server_name_is_ost(const char *svname) { const char *dash; int rc; /* We use server_name2fsname() just for parsing */ rc = server_name2fsname(svname, NULL, &dash); if (rc != 0) return rc; dash++; if (strncmp(dash, "OST", 3) == 0) return 1; return 0; } EXPORT_SYMBOL(server_name_is_ost); /** * Get the index from the target name MDTXXXX/OSTXXXX * rc = server type, or rc < 0 on error **/ int target_name2index(const char *tgtname, u32 *idx, const char **endptr) { const char *dash = tgtname; int type, len, rc; u16 index; if (strncmp(dash, "MDT", 3) == 0) type = LDD_F_SV_TYPE_MDT; else if (strncmp(dash, "OST", 3) == 0) type = LDD_F_SV_TYPE_OST; else return -EINVAL; dash += 3; if (strncmp(dash, "all", 3) == 0) { if (endptr != NULL) *endptr = dash + 3; return type | LDD_F_SV_ALL; } len = strspn(dash, "0123456789ABCDEFabcdef"); if (len > 4) return -ERANGE; if (strlen(dash) != len) { char num[5]; num[4] = '\0'; memcpy(num, dash, sizeof(num) - 1); rc = kstrtou16(num, 16, &index); if (rc < 0) return rc; } else { rc = kstrtou16(dash, 16, &index); if (rc < 0) return rc; } if (idx) *idx = index; if (endptr) *endptr = dash + len; return type; } EXPORT_SYMBOL(target_name2index); /* * Get the index from the OBD name. * rc = server type, or * rc < 0 on error * if endptr isn't NULL it is set to end of name */ int server_name2index(const char *svname, __u32 *idx, const char **endptr) { const char *dash; int rc; /* We use server_name2fsname() just for parsing */ rc = server_name2fsname(svname, NULL, &dash); if (rc != 0) return rc; dash++; rc = target_name2index(dash, idx, endptr); if (rc < 0) return rc; /* Account for -mdc after index that is possible when specifying mdt */ if (endptr != NULL && strncmp(LUSTRE_MDC_NAME, *endptr + 1, sizeof(LUSTRE_MDC_NAME)-1) == 0) *endptr += sizeof(LUSTRE_MDC_NAME); return rc; } EXPORT_SYMBOL(server_name2index); /*************** mount common betweeen server and client ***************/ /* Common umount */ int lustre_common_put_super(struct super_block *sb) { int rc; ENTRY; CDEBUG(D_MOUNT, "dropping sb %p\n", sb); /* Drop a ref to the MGC */ rc = lustre_stop_mgc(sb); if (rc && (rc != -ENOENT)) { if (rc != -EBUSY) { CERROR("Can't stop MGC: %d\n", rc); RETURN(rc); } /* * BUSY just means that there's some other OBD that * needs the mgc. Let him clean it up. */ CDEBUG(D_MOUNT, "MGC still in use\n"); } /* Drop a ref to the mounted disk */ lustre_put_lsi(sb); RETURN(rc); } EXPORT_SYMBOL(lustre_common_put_super); static void lmd_print(struct lustre_mount_data *lmd) { int i; PRINT_CMD(D_MOUNT, " mount data:\n"); if (lmd_is_client(lmd)) PRINT_CMD(D_MOUNT, "profile: %s\n", lmd->lmd_profile); PRINT_CMD(D_MOUNT, "device: %s\n", lmd->lmd_dev); if (lmd->lmd_opts) PRINT_CMD(D_MOUNT, "options: %s\n", lmd->lmd_opts); if (lmd->lmd_recovery_time_soft) PRINT_CMD(D_MOUNT, "recovery time soft: %d\n", lmd->lmd_recovery_time_soft); if (lmd->lmd_recovery_time_hard) PRINT_CMD(D_MOUNT, "recovery time hard: %d\n", lmd->lmd_recovery_time_hard); for (i = 0; i < lmd->lmd_exclude_count; i++) { PRINT_CMD(D_MOUNT, "exclude %d: OST%04x\n", i, lmd->lmd_exclude[i]); } } /* Is this server on the exclusion list */ int lustre_check_exclusion(struct super_block *sb, char *svname) { struct lustre_sb_info *lsi = s2lsi(sb); struct lustre_mount_data *lmd = lsi->lsi_lmd; __u32 index; int i, rc; ENTRY; rc = server_name2index(svname, &index, NULL); if (rc != LDD_F_SV_TYPE_OST) /* Only exclude OSTs */ RETURN(0); CDEBUG(D_MOUNT, "Check exclusion %s (%d) in %d of %s\n", svname, index, lmd->lmd_exclude_count, lmd->lmd_dev); for (i = 0; i < lmd->lmd_exclude_count; i++) { if (index == lmd->lmd_exclude[i]) { CWARN("Excluding %s (on exclusion list)\n", svname); RETURN(1); } } RETURN(0); } /* mount -v -o exclude=lustre-OST0001:lustre-OST0002 -t lustre ... */ static int lmd_make_exclusion(struct lustre_mount_data *lmd, const char *ptr) { const char *s1 = ptr, *s2; __u32 *exclude_list; __u32 index = 0; int rc = 0, devmax; ENTRY; /* * The shortest an ost name can be is 8 chars: -OST0000. * We don't actually know the fsname at this time, so in fact * a user could specify any fsname. */ devmax = strlen(ptr) / 8 + 1; /* temp storage until we figure out how many we have */ OBD_ALLOC_PTR_ARRAY(exclude_list, devmax); if (!exclude_list) RETURN(-ENOMEM); /* we enter this fn pointing at the '=' */ while (*s1 && *s1 != ' ' && *s1 != ',') { s1++; rc = server_name2index(s1, &index, &s2); if (rc < 0) { CERROR("Can't parse server name '%s': rc = %d\n", s1, rc); break; } if (rc == LDD_F_SV_TYPE_OST) exclude_list[lmd->lmd_exclude_count++] = index; else CDEBUG(D_MOUNT, "ignoring exclude %.*s: type = %#x\n", (uint)(s2-s1), s1, rc); s1 = s2; /* * now we are pointing at ':' (next exclude) * or ',' (end of excludes) */ if (lmd->lmd_exclude_count >= devmax) break; } if (rc >= 0) /* non-err */ rc = 0; if (lmd->lmd_exclude_count) { /* permanent, freed in lustre_free_lsi */ OBD_ALLOC_PTR_ARRAY(lmd->lmd_exclude, lmd->lmd_exclude_count); if (lmd->lmd_exclude) { memcpy(lmd->lmd_exclude, exclude_list, sizeof(index) * lmd->lmd_exclude_count); } else { rc = -ENOMEM; lmd->lmd_exclude_count = 0; } } OBD_FREE_PTR_ARRAY(exclude_list, devmax); RETURN(rc); } static int lmd_parse_mgssec(struct lustre_mount_data *lmd, char *ptr) { int length = strlen(ptr); if (lmd->lmd_mgssec != NULL) { OBD_FREE(lmd->lmd_mgssec, strlen(lmd->lmd_mgssec) + 1); lmd->lmd_mgssec = NULL; } OBD_ALLOC(lmd->lmd_mgssec, length + 1); if (lmd->lmd_mgssec == NULL) return -ENOMEM; memcpy(lmd->lmd_mgssec, ptr, length); lmd->lmd_mgssec[length] = '\0'; return 0; } static int lmd_parse_network(struct lustre_mount_data *lmd, char *ptr) { int length = strlen(ptr); if (lmd->lmd_nidnet != NULL) { OBD_FREE(lmd->lmd_nidnet, strlen(lmd->lmd_nidnet) + 1); lmd->lmd_nidnet = NULL; } OBD_ALLOC(lmd->lmd_nidnet, length + 1); if (lmd->lmd_nidnet == NULL) return -ENOMEM; memcpy(lmd->lmd_nidnet, ptr, length); lmd->lmd_nidnet[length] = '\0'; return 0; } static int lmd_parse_string(char **handle, char *ptr) { if (!handle || !ptr) return -EINVAL; OBD_FREE(*handle, strlen(*handle) + 1); *handle = NULL; *handle = kstrdup(ptr, GFP_NOFS); if (!*handle) return -ENOMEM; OBD_ALLOC_POST(*handle, strlen(ptr) + 1, "kmalloced"); return 0; } /* Collect multiple values for mgsnid specifiers */ static int lmd_parse_mgs(struct lustre_mount_data *lmd, char *ptr, char **tail) { int length = strlen(ptr); struct lnet_nid nid; char *next = *tail; char *mgsnid; int oldlen = 0; /* Find end of NID-list */ while (class_parse_nid_quiet(*tail, &nid, tail) == 0) ; /* do nothing */ if (next && next != *tail) length += *tail - next + 1; if (length == 0) { LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", ptr); return -EINVAL; } if (lmd->lmd_mgs != NULL) oldlen = strlen(lmd->lmd_mgs) + 1; OBD_ALLOC(mgsnid, oldlen + length + 1); if (mgsnid == NULL) return -ENOMEM; if (lmd->lmd_mgs != NULL) { /* Multiple mgsnid= are taken to mean failover locations */ memcpy(mgsnid, lmd->lmd_mgs, oldlen); mgsnid[oldlen - 1] = ':'; OBD_FREE(lmd->lmd_mgs, oldlen); } if (next && next != *tail) snprintf(mgsnid + oldlen, length + 1, "%s,%.*s", ptr, (int)(*tail - next + 1), next); else snprintf(mgsnid + oldlen, length + 1, "%s", ptr); lmd->lmd_mgs = mgsnid; return 0; } enum lmd_mnt_flags { LMD_OPT_RECOVERY_TIME_SOFT = LMD_FLG_NUM_FLAGS + 1, LMD_OPT_RECOVERY_TIME_HARD, LMD_OPT_MGSNODE, LMD_OPT_MGSSEC, LMD_OPT_EXCLUDE, LMD_OPT_SVNAME, LMD_OPT_PARAM, LMD_OPT_OSD, LMD_OPT_NETWORK, LMD_OPT_DEVICE, LMD_NUM_MOUNT_OPT }; static const match_table_t lmd_flags_table = { {LMD_FLG_SKIP_LFSCK, "skip_lfsck"}, {LMD_FLG_ABORT_RECOV, "abort_recov"}, {LMD_FLG_ABORT_RECOV, "abort_recovery"}, {LMD_FLG_NOSVC, "nosvc"}, {LMD_FLG_MGS, "mgs"}, {LMD_FLG_NOMGS, "nomgs"}, {LMD_FLG_WRITECONF, "writeconf"}, {LMD_FLG_NOIR, "noir"}, {LMD_FLG_NOSCRUB, "noscrub"}, {LMD_FLG_NO_PRIMNODE, "noprimnode"}, {LMD_FLG_VIRGIN, "virgin"}, {LMD_FLG_UPDATE, "update"}, {LMD_FLG_DEV_RDONLY, "rdonly_dev"}, {LMD_FLG_NO_CREATE, "no_create"}, {LMD_FLG_NO_CREATE, "no_precreate"}, {LMD_FLG_LOCAL_RECOV, "localrecov"}, {LMD_FLG_ABORT_RECOV_MDT, "abort_recov_mdt"}, {LMD_FLG_ABORT_RECOV_MDT, "abort_recovery_mdt"}, {LMD_FLG_NO_LOCAL_LOGS, "nolocallogs"}, {LMD_OPT_RECOVERY_TIME_SOFT, "recovery_time_soft=%u"}, {LMD_OPT_RECOVERY_TIME_HARD, "recovery_time_hard=%u"}, {LMD_OPT_MGSNODE, "mgsnode=%s"}, {LMD_OPT_MGSSEC, "mgssec=%s"}, {LMD_OPT_EXCLUDE, "exclude=%s"}, {LMD_OPT_SVNAME, "svname=%s"}, {LMD_OPT_PARAM, "param=%s"}, {LMD_OPT_OSD, "osd=%s"}, {LMD_OPT_NETWORK, "network=%s"}, {LMD_OPT_DEVICE, "device=%s"}, /* should be last */ {LMD_NUM_MOUNT_OPT, NULL} }; /** * Find the first delimiter; comma; from the specified \a buf and * make \a *endh point to the string starting with the delimiter. * The character ':' is also a delimiter for Lustre but not match_table * so the string is not split on it. Making it safe to ignore. * * @buf a delimiter-separated string * @endh a pointer to a pointer that will point to the string * starting with the delimiter * * Returns: true if delimiter is found, false if delimiter is not found */ static bool lmd_find_delimiter(char *buf, char **endh) { substring_t args[LMD_NUM_MOUNT_OPT]; char *end, *tmp; size_t len; int token; if (!buf) return false; /* No more options so we are done */ end = strchr(buf, ','); if (!end) return false; len = end - buf; tmp = kstrndup(buf, len, GFP_KERNEL); if (!tmp) return false; args[0].to = NULL; args[0].from = NULL; token = match_token(tmp, lmd_flags_table, args); kfree(tmp); if (token != LMD_NUM_MOUNT_OPT) return false; if (endh) *endh = end; return true; } /** * Make sure the string in \a buf is of a valid formt. * * @buf a delimiter-separated string * * Returns: true if string valid, false if string contains errors */ static bool lmd_validate_param(char *buf) { char *c = buf; size_t pos; if (!buf) return false; try_again: pos = strcspn(c, "[]"); if (!pos) return true; c += pos; /* Not a valid mount string */ if (*c == ']') { CWARN("invalid mount string format\n"); return false; } if (*c == '[') { char *right = strchr(c, ']'), *tmp; /* invalid mount string */ if (!right) { CWARN("invalid mount string format\n"); return false; } c++; /* Test for [ .. [ .. ] */ tmp = strchr(c, '['); if (tmp && tmp < right) { CWARN("invalid mount string format\n"); return false; } /* Test for [ .. @ .. ] which means brackets * span more than one NID string. */ tmp = strchr(c, '@'); if (tmp && tmp < right) { CWARN("invalid mount string format\n"); return false; } c = right++; goto try_again; } return true; } /** * Find the first valid string delimited by comma or colon from the specified * @buf and parse it to see whether it's a valid nid list. If yes, @*endh * will point to the next string starting with the delimiter. * * @buf: a delimiter-separated string * * Returns: false if the string is a valid nid list * true if the string is not a valid nid list */ static bool lmd_parse_nidlist(char *buf) { LIST_HEAD(nidlist); bool invalid; char *end; if (!buf) return true; end = strchr(buf, '='); if (end) buf = end + 1; while ((end = strchr(buf, '@')) != NULL) { size_t pos = strcspn(end, ":,"); char c; end += pos; c = end[0]; end[0] = '\0'; /* FIXME !!! Add IPv6 support to cfs_parse_nidlist */ if (strchr(buf, ':')) { struct lnet_nid nid; if (libcfs_strnid(&nid, buf) < 0) { invalid = true; goto failed; } } else { if (cfs_parse_nidlist(buf, &nidlist) < 0) { invalid = true; goto failed; } else { cfs_free_nidlist(&nidlist); } } end[0] = c; end++; buf = end; } invalid = false; failed: return invalid; } /** * Parse mount line options * e.g. mount -v -t lustre -o abort_recov uml1:uml2:/lustre-client /mnt/lustre * dev is passed as device=uml1:/lustre by mount.lustre_tgt */ int lmd_parse(char *options, struct lustre_mount_data *lmd) { char *s1, *s2, *opts, *orig_opts, *devname = NULL; struct lustre_mount_data *raw = (struct lustre_mount_data *)options; int rc = 0; ENTRY; LASSERT(lmd); if (!options) { LCONSOLE_ERROR_MSG(0x162, "Missing mount data: check /sbin/mount.lustre_tgt is installed.\n"); RETURN(-EINVAL); } /* Options should be a string - try to detect old lmd data */ if ((raw->lmd_magic & 0xffffff00) == (LMD_MAGIC & 0xffffff00)) { LCONSOLE_ERROR_MSG(0x163, "Using an old version of /sbin/mount.lustre. Please install version %s\n", LUSTRE_VERSION_STRING); RETURN(-EINVAL); } lmd->lmd_magic = LMD_MAGIC; /* Don't stomp on lmd_opts */ opts = kstrdup(options, GFP_KERNEL); if (!opts) RETURN(-ENOMEM); orig_opts = opts; s1 = opts; OBD_ALLOC(lmd->lmd_params, LMD_PARAMS_MAXLEN); if (!lmd->lmd_params) GOTO(invalid, rc = -ENOMEM); lmd->lmd_params[0] = '\0'; /* Set default flags here */ while ((s1 = strsep(&opts, ",")) != NULL) { int time_min = OBD_RECOVERY_TIME_MIN, tmp; substring_t args[LMD_NUM_MOUNT_OPT]; int token; if (!*s1) continue; /* * Initialize args struct so we know whether arg was * found; some options take optional arguments. */ args[0].to = NULL; args[0].from = NULL; token = match_token(s1, lmd_flags_table, args); if (token == LMD_NUM_MOUNT_OPT) { if (match_wildcard("iam", s1) || match_wildcard("hsm", s1)) continue; /* Normally we would error but client and * server mounting is intertwine. So pass * off unknown args to ll_options instead. */ continue; } else { /* We found a known server option. Filter out * the result out of the options string. The * reset will be stored in lmd_opts. */ char *tmp = strstr(options, s1); if (strcmp(tmp, s1) != 0) { s2 = tmp + strlen(s1) + 1; memmove(tmp, s2, strlen(s2) + 1); } else { *tmp = 0; } } /* * Client options are parsed in ll_options: eg. flock, * user_xattr, acl */ /* * Parse non-ldiskfs options here. Rather than modifying * ldiskfs, we just zero these out here */ switch (token) { case LMD_FLG_ABORT_RECOV_MDT: case LMD_FLG_ABORT_RECOV: case LMD_FLG_NO_CREATE: case LMD_FLG_NOIR: /* test purpose only. */ case LMD_FLG_NOSVC: case LMD_FLG_NOMGS: case LMD_FLG_NOSCRUB: case LMD_FLG_SKIP_LFSCK: case LMD_FLG_DEV_RDONLY: case LMD_FLG_WRITECONF: case LMD_FLG_NO_LOCAL_LOGS: case LMD_FLG_UPDATE: case LMD_FLG_VIRGIN: case LMD_FLG_NO_PRIMNODE: case LMD_FLG_MGS: /* We are an MGS */ case LMD_FLG_LOCAL_RECOV: set_bit(token, lmd->lmd_flags); break; case LMD_OPT_RECOVERY_TIME_SOFT: rc = match_int(args, &tmp); if (rc == 0) lmd->lmd_recovery_time_soft = max_t(int, tmp, time_min); break; case LMD_OPT_RECOVERY_TIME_HARD: rc = match_int(args, &tmp); if (rc == 0) lmd->lmd_recovery_time_hard = max_t(int, tmp, time_min); break; case LMD_OPT_MGSNODE: /* Assume the next mount opt is the first * invalid NID we get to. */ rc = lmd_parse_mgs(lmd, args->from, &opts); if (rc < 0) GOTO(invalid, rc); if (strcmp(options, opts) != 0) { s2 = strstr(options, opts); if (s2) options = s2; } break; case LMD_OPT_MGSSEC: rc = lmd_parse_mgssec(lmd, args->from); break; case LMD_OPT_EXCLUDE: /* ost exclusion list */ rc = lmd_make_exclusion(lmd, args->from); break; case LMD_OPT_SVNAME: rc = lmd_parse_string(&lmd->lmd_profile, args->from); break; case LMD_OPT_PARAM: { size_t length = strlen(args->from), params_length; char *tail = NULL, *entry; params_length = strlen(lmd->lmd_params); if (params_length + length + 1 >= LMD_PARAMS_MAXLEN) { rc = -E2BIG; goto bad_string; } entry = lmd->lmd_params + params_length; strncat(lmd->lmd_params, args->from, length); /* Find end of param string */ while (lmd_find_delimiter(opts, &tail)) { params_length = strlen(lmd->lmd_params); /* match_table splits by ',' so fill it in */ lmd->lmd_params[params_length++] = ','; length = tail - opts + 1; if (!length) break; if (params_length + length + 1 >= LMD_PARAMS_MAXLEN) { rc = -E2BIG; goto bad_string; } strscpy(lmd->lmd_params + params_length, opts, length); opts = tail + 1; } lmd->lmd_params[params_length + length] = '\0'; if (!lmd_validate_param(entry)) { rc = -EINVAL; goto bad_string; } /* param contains NIDs */ if (strchr(entry, '@') && lmd_parse_nidlist(entry)) { rc = -EINVAL; goto bad_string; } /* remove params from opts string from options string */ if (strlen(args->from) != strlen(entry)) { char *tmp = entry + strlen(args->from) + 1; s2 = strstr(options, tmp); if (s2) { size_t len = strlen(s2) - strlen(tmp); memmove(s2, s2 + strlen(tmp) + 1, len); } } strlcat(lmd->lmd_params, " ", LMD_PARAMS_MAXLEN); if (tail) opts = tail + 1; bad_string: break; } case LMD_OPT_OSD: rc = lmd_parse_string(&lmd->lmd_osd_type, args->from); break; case LMD_OPT_DEVICE: { size_t len = 0; /* match_table splits strings at ',' so we need to * piece things back together. */ if (opts) { len = strlen(opts) + 1; /* Move to last part of device string */ s2 = strchr(opts, '/'); if (!s2) GOTO(invalid, rc = -EINVAL); /* See if more options exist */ s2 = strchr(s2, ','); if (s2) len = s2 - opts; } len += strlen(args->from) + 1; /* Freed in lustre_free_lsi */ OBD_ALLOC(lmd->lmd_dev, len); if (!lmd->lmd_dev) GOTO(invalid, rc = -ENOMEM); if (opts) snprintf(lmd->lmd_dev, len, "%s,%s", args->from, opts); else strscpy(lmd->lmd_dev, args->from, len); devname = lmd->lmd_dev; /* remove the split string 'opts' from options */ if (opts) { s1 = strstr(options, opts); if (s1) { /* opts start after args->from so * reduce len. */ len -= strlen(args->from) + 2; s2 = s1 + len; memmove(options, s2, strlen(s2) + 1); opts += len; } } break; } case LMD_OPT_NETWORK: rc = lmd_parse_network(lmd, args->from); /* check if LNet dynamic peer discovery is activated */ if (LNetGetPeerDiscoveryStatus()) { CERROR("LNet Dynamic Peer Discovery is enabled on this node. 'network' mount option cannot be taken into account.\n"); rc = -EINVAL; } break; } } if (rc < 0) GOTO(invalid, rc); if (!devname) { LCONSOLE_ERROR_MSG(0x164, "Can't find device name (need mount option 'device=...')\n"); GOTO(invalid, rc = -ENODEV); } s1 = strstr(devname, ":/"); if (s1) { ++s1; set_bit(LMD_FLG_CLIENT, lmd->lmd_flags); /* Remove leading /s from fsname */ while (*++s1 == '/') ; s2 = s1; while (*s2 != '/' && *s2 != '\0') s2++; /* Freed in lustre_free_lsi */ OBD_ALLOC(lmd->lmd_profile, s2 - s1 + 8); if (!lmd->lmd_profile) GOTO(invalid, rc = -ENOMEM); strncat(lmd->lmd_profile, s1, s2 - s1); strncat(lmd->lmd_profile, "-client", 7); s1 = s2; s2 = s1 + strlen(s1) - 1; /* Remove padding /s from fileset */ while (*s2 == '/') s2--; if (s2 > s1) { OBD_ALLOC(lmd->lmd_fileset, s2 - s1 + 2); if (!lmd->lmd_fileset) GOTO(invalid, rc = -ENOMEM); strncat(lmd->lmd_fileset, s1, s2 - s1 + 1); } } else { /* server mount */ if (lmd->lmd_nidnet != NULL) { /* 'network=' mount option forbidden for server */ OBD_FREE(lmd->lmd_nidnet, strlen(lmd->lmd_nidnet) + 1); lmd->lmd_nidnet = NULL; rc = -EINVAL; CERROR("%s: option 'network=' not allowed for Lustre servers: rc = %d\n", devname, rc); GOTO(invalid, rc); } } /* Save mount options */ s1 = options + strlen(options) - 1; while (s1 >= options && (*s1 == ',' || *s1 == ' ')) *s1-- = 0; while (*options && (*options == ',' || *options == ' ')) options++; if (*options != 0) { /* Freed in lustre_free_lsi */ OBD_ALLOC(lmd->lmd_opts, strlen(options) + 1); if (!lmd->lmd_opts) GOTO(invalid, rc = -ENOMEM); strncpy(lmd->lmd_opts, options, strlen(options)); } lmd_print(lmd); invalid: if (rc < 0) CERROR("Bad mount options %s\n", options); kfree(orig_opts); RETURN(rc); } EXPORT_SYMBOL(lmd_parse);