X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Futils%2Fmount_lustre.c;h=588ebaf519758d4c8ea5ca7f0a406443fd2cd2cf;hp=17c54717966d83019779d69ad3a7dbe861b78567;hb=29c434b882ed11de968130492c14884d5942d9dd;hpb=113303973ec9f8484eb2355a1a6ef3c4c7fd6a56 diff --git a/lustre/utils/mount_lustre.c b/lustre/utils/mount_lustre.c index 17c5471..588ebaf 100644 --- a/lustre/utils/mount_lustre.c +++ b/lustre/utils/mount_lustre.c @@ -1,29 +1,46 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2002 Cluster File Systems, Inc. - * Author: Robert Read - * Author: Nathan Rutman + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of Lustre, http://www.lustre.org. + * 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. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License 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). * - * Lustre 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 for more details. + * 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 * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. * + * Copyright (c) 2011, 2016, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/utils/mount_lustre.c + * + * Author: Robert Read + * Author: Nathan Rutman */ - +#ifndef _GNU_SOURCE #define _GNU_SOURCE +#endif +#include +#include +#include #include #include #include @@ -31,96 +48,76 @@ #include #include #include -#include -#include -#include -#include "obdctl.h" +#include #include +#include +#include +#include +#include -int verbose = 0; -int nomtab = 0; -int fake = 0; -int force = 0; -static char *progname = NULL; +#include "obdctl.h" +#include "mount_utils.h" + +#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 10, 53, 0) +/* + * LU-1783 + * We only #include a kernel level include file here because + * important MS_ flag #defines are missing from the SLES version + * of sys/mount.h + * In the future if SLES updates sys/mount.h to have a more complete + * set of flag #defines we should stop including linux/fs.h + */ +#if !defined(MS_RDONLY) +#include +#endif +#endif -void usage(FILE *out) -{ - fprintf(out, "%s v"LUSTRE_VERSION_STRING"\n", progname); - fprintf(out, "\nThis mount helper should only be invoked via the " - "mount (8) command,\ne.g. mount -t lustre dev dir\n\n"); - fprintf(out, "usage: %s [-fhnv] [-o ] \n", - progname); - fprintf(out, - "\t: the disk device, or for a client:\n" - "\t\t[:...]:/-client\n" - "\t: name of the Lustre filesystem (e.g. lustre1)\n" - "\t: filesystem mountpoint (e.g. /mnt/lustre)\n" - "\t-f|--fake: fake mount (updates /etc/mtab)\n" - "\t--force: force mount even if already in /etc/mtab\n" - "\t-h|--help: print this usage message\n" - "\t-n|--nomtab: do not update /etc/mtab after mount\n" - "\t-v|--verbose: print verbose config settings\n" - "\t: one or more comma separated of:\n" - "\t\t(no)flock,(no)user_xattr,(no)acl\n" - "\t\tnosvc: only start MGC/MGS obds\n" - "\t\texclude=[:] : colon-separated list of " - "inactive OSTs (e.g. lustre-OST0001)\n" - ); - exit((out != stdout) ? EINVAL : 0); -} +#ifdef HAVE_LIBMOUNT +# define WITH_LIBMOUNT "(libmount)" +#else +# define WITH_LIBMOUNT "" +#endif -static int check_mtab_entry(char *spec, char *mtpt, char *type) -{ - FILE *fp; - struct mntent *mnt; - - fp = setmntent(MOUNTED, "r"); - if (fp == NULL) - return(0); - - while ((mnt = getmntent(fp)) != NULL) { - if (strcmp(mnt->mnt_fsname, spec) == 0 && - strcmp(mnt->mnt_dir, mtpt) == 0 && - strcmp(mnt->mnt_type, type) == 0) { - endmntent(fp); - return(EEXIST); - } - } - endmntent(fp); +#define MAX_RETRIES 99 - return(0); -} +int verbose; +int version; +char *progname; -static int -update_mtab_entry(char *spec, char *mtpt, char *type, char *opts, - int flags, int freq, int pass) +void usage(FILE *out) { - FILE *fp; - struct mntent mnt; - int rc = 0; - - mnt.mnt_fsname = spec; - mnt.mnt_dir = mtpt; - mnt.mnt_type = type; - mnt.mnt_opts = opts ? opts : ""; - mnt.mnt_freq = freq; - mnt.mnt_passno = pass; - - fp = setmntent(MOUNTED, "a+"); - if (fp == NULL) { - fprintf(stderr, "%s: setmntent(%s): %s:", - progname, MOUNTED, strerror (errno)); - rc = 16; - } else { - if ((addmntent(fp, &mnt)) == 1) { - fprintf(stderr, "%s: addmntent: %s:", - progname, strerror (errno)); - rc = 16; - } - endmntent(fp); - } - - return rc; + fprintf(out, "\nThis mount helper should only be invoked via the " + "mount (8) command,\ne.g. mount -t lustre dev dir\n\n"); + fprintf(out, "usage: %s [-fhnvV] [-o ] \n", + progname); + fprintf(out, + "\t: the disk device, or for a client:\n" + "\t\t[:...]:/[/]\n" + "\t: name of the Lustre filesystem (e.g. lustre1)\n" + "\t: filesystem mountpoint (e.g. /mnt/lustre)\n" + "\t-f|--fake: fake mount (updates /etc/mtab)\n" + "\t-o force|--force: force mount even if already in /etc/mtab\n" + "\t-h|--help: print this usage message\n" + "\t-n|--nomtab: do not update /etc/mtab after mount\n" + "\t-v|--verbose: print verbose config settings\n" + "\t-V|--version: output build version of the utility and exit\n" + "\t: one or more comma separated of:\n" + "\t\t(no)flock,(no)user_xattr,(no)acl\n" + "\t\tabort_recov: abort server recovery handling\n" + "\t\tnosvc: only start MGC/MGS obds\n" + "\t\tnomgs: only start target obds, using existing MGS\n" + "\t\tnoscrub: NOT auto start OI scrub unless start explicitly\n" + "\t\tskip_lfsck: NOT auto resume the paused/crashed LFSCK\n" + "\t\texclude=[:] : colon-separated list of " + "inactive OSTs (e.g. lustre-OST0001)\n" +#ifdef HAVE_GSS + "\t\tskpath=: Path to a file or directory of" + "key configuration files to load into the kernel keyring\n" +#endif + "\t\tretry=: number of times mount is retried by client\n" + "\t\tmd_stripe_cache_size=: set the raid stripe cache " + "size for the underlying raid if present\n"); + exit((out != stdout) ? EINVAL : 0); } /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */ @@ -131,16 +128,22 @@ static char *convert_hostnames(char *s1) char sep; int left = MAXNIDSTR; lnet_nid_t nid; - + converted = malloc(left); + if (converted == NULL) { + fprintf(stderr, "out of memory: needed %d bytes\n", + MAXNIDSTR); + return NULL; + } c = converted; while ((left > 0) && (*s1 != '/')) { s2 = strpbrk(s1, ",:"); if (!s2) goto out_free; sep = *s2; - *s2 = '\0'; + *s2 = '\0'; nid = libcfs_str2nid(s1); + *s2 = sep; /* back to original string */ if (nid == LNET_NID_ANY) goto out_free; c += snprintf(c, left, "%s%c", libcfs_nid2str(nid), sep); @@ -181,13 +184,28 @@ static const struct opt_map opt_map[] = { { "nosuid", 0, MS_NOSUID }, /* don't honor suid executables */ { "dev", 1, MS_NODEV }, /* interpret device files */ { "nodev", 0, MS_NODEV }, /* don't interpret devices */ + { "sync", 0, MS_SYNCHRONOUS}, /* synchronous I/O */ { "async", 1, MS_SYNCHRONOUS}, /* asynchronous I/O */ + { "atime", 1, MS_NOATIME }, /* set file access time on read */ + { "noatime", 0, MS_NOATIME }, /* do not set file access time on read */ +#ifdef MS_NODIRATIME + { "diratime", 1, MS_NODIRATIME }, /* set file access time on read */ + { "nodiratime",0,MS_NODIRATIME }, /* do not set file access time on read */ +#endif +#ifdef MS_RELATIME + { "relatime", 0, MS_RELATIME }, /* set file access time on read */ + { "norelatime",1,MS_RELATIME }, /* do not set file access time on read */ +#endif +#ifdef MS_STRICTATIME + { "strictatime",0,MS_STRICTATIME }, /* update access time strictly */ +#endif { "auto", 0, 0 }, /* Can be mounted using -a */ { "noauto", 0, 0 }, /* Can only be mounted explicitly */ { "nousers", 1, 0 }, /* Forbid ordinary user to mount */ { "nouser", 1, 0 }, /* Forbid ordinary user to mount */ { "noowner", 1, 0 }, /* Device owner has no special privs */ { "_netdev", 0, 0 }, /* Device accessible only via network */ + { "loop", 0, 0 }, { NULL, 0, 0 } }; /****************************************************************************/ @@ -214,189 +232,673 @@ static int parse_one_option(const char *check, int *flagp) return 0; } +static int append_option(char *options, size_t options_len, + const char *param, const char *value) +{ + int rc; + if (options[0] != '\0') { + rc = strlcat(options, ",", options_len); + if (rc >= options_len) + goto out_err; + } + rc = strlcat(options, param, options_len); + if (rc >= options_len) + goto out_err; + if (value != NULL) { + rc = strlcat(options, value, options_len); + if (rc >= options_len) + goto out_err; + } + return 0; +out_err: + fprintf(stderr, "error: mount options %s%s too long\n", param, value); + return E2BIG; +} + /* Replace options with subset of Lustre-specific options, and fill in mount flags */ -int parse_options(char *orig_options, int *flagp) +int parse_options(struct mount_opts *mop, char *orig_options, + int *flagp, size_t options_len) { - char *options, *opt, *nextopt; - - options = calloc(strlen(orig_options) + 1, 1); - *flagp = 0; - nextopt = orig_options; - while ((opt = strsep(&nextopt, ","))) { - if (!*opt) - /* empty option */ - continue; - if (parse_one_option(opt, flagp) == 0) { - /* pass this on as an option */ - if (*options) - strcat(options, ","); - strcat(options, opt); - } - } - strcpy(orig_options, options); - free(options); - return 0; + char *options, *opt, *nextopt, *arg, *val; + int rc = 0; + + options = calloc(strlen(orig_options) + 1, 1); + *flagp = 0; + nextopt = orig_options; + while ((opt = strsep(&nextopt, ","))) { + if (!*opt) + /* empty option */ + continue; + + /* Handle retries in a slightly different + * manner */ + arg = opt; + val = strchr(opt, '='); + /* please note that some ldiskfs mount options are also in + * the form of param=value. We should pay attention not to + * remove those mount options, see bug 22097. */ + if (val && strncmp(arg, "max_sectors_kb", 14) == 0) { + mop->mo_max_sectors_kb = atoi(val + 1); + } else if (val && + strncmp(arg, "md_stripe_cache_size", 20) == 0) { + mop->mo_md_stripe_cache_size = atoi(val + 1); + } else if (val && strncmp(arg, "retry", 5) == 0) { + mop->mo_retry = atoi(val + 1); + if (mop->mo_retry > MAX_RETRIES) + mop->mo_retry = MAX_RETRIES; + else if (mop->mo_retry < 0) + mop->mo_retry = 0; + } else if (val && strncmp(arg, "mgssec", 6) == 0) { + rc = append_option(options, options_len, opt, NULL); + if (rc != 0) + goto out_options; + } else if (strncmp(arg, "nosvc", 5) == 0) { + mop->mo_nosvc = 1; + rc = append_option(options, options_len, opt, NULL); + if (rc != 0) + goto out_options; + } else if (strcmp(opt, "force") == 0) { + /* XXX special check for 'force' option */ + ++mop->mo_force; + printf("force: %d\n", mop->mo_force); +#ifdef HAVE_GSS + } else if (val && strncmp(opt, "skpath=", 7) == 0) { + if (strlen(val) + 1 >= sizeof(mop->mo_skpath)) { + fprintf(stderr, + "%s: shared key path too long\n", + progname); + free(options); + return -1; + } + strncpy(mop->mo_skpath, val + 1, strlen(val + 1)); +#endif + } else if (parse_one_option(opt, flagp) == 0) { + /* pass this on as an option */ + rc = append_option(options, options_len, opt, NULL); + if (rc != 0) + goto out_options; + } + } +#ifdef MS_STRICTATIME +#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 2, 53, 0) + /* + * LU-1783 + * In the future when upstream fixes land in all supported kernels + * we should stop forcing MS_STRICTATIME in lustre mounts. + * We override the kernel level default of MS_RELATIME for now + * due to a kernel vfs level bug in atime updates that fails + * to reset timestamps from the future. + */ +#warn "remove MS_STRICTATIME override if kernel updates atime from the future" +#endif + /* set strictatime to default if NOATIME or RELATIME + not given explicit */ + if (!(*flagp & (MS_NOATIME | MS_RELATIME))) + *flagp |= MS_STRICTATIME; +#endif + strcpy(orig_options, options); + +out_options: + free(options); + return rc; } +/* Add mgsnids from ldd params */ +static int add_mgsnids(struct mount_opts *mop, char *options, + const char *params, size_t options_len) +{ + char *ptr = (char *)params; + char tmp, *sep; + int rc = 0; + + while ((ptr = strstr(ptr, PARAM_MGSNODE)) != NULL) { + sep = strchr(ptr, ' '); + if (sep != NULL) { + tmp = *sep; + *sep = '\0'; + } + rc = append_option(options, options_len, ptr, NULL); + if (rc != 0) + goto out; + mop->mo_have_mgsnid++; + if (sep) { + *sep = tmp; + ptr = sep; + } else { + break; + } + } + +out: + return rc; +} -int main(int argc, char *const argv[]) +static int clear_update_ondisk(char *source, struct lustre_disk_data *ldd) { - char default_options[] = ""; - char *source, *target, *ptr; - char *options, *optcopy, *orig_options = default_options; - int i, nargs = 3, opt, rc, flags, optlen; - static struct option long_opt[] = { - {"fake", 0, 0, 'f'}, - {"force", 0, 0, 1}, - {"help", 0, 0, 'h'}, - {"nomtab", 0, 0, 'n'}, - {"options", 1, 0, 'o'}, - {"verbose", 0, 0, 'v'}, - {0, 0, 0, 0} - }; - - progname = strrchr(argv[0], '/'); - progname = progname ? progname + 1 : argv[0]; - - while ((opt = getopt_long(argc, argv, "fhno:v", - long_opt, NULL)) != EOF){ - switch (opt) { - case 1: - ++force; - printf("force: %d\n", force); - nargs++; - break; - case 'f': - ++fake; - printf("fake: %d\n", fake); - nargs++; - break; - case 'h': - usage(stdout); - break; - case 'n': - ++nomtab; - printf("nomtab: %d\n", nomtab); - nargs++; - break; - case 'o': - orig_options = optarg; - nargs++; - break; - case 'v': - ++verbose; - nargs++; - break; - default: - fprintf(stderr, "%s: unknown option '%c'\n", - progname, opt); - usage(stderr); - break; - } - } + char wanted_mountopts[512] = ""; + struct mkfs_opts mkop; + int ret; + int ret2; + + memset(&mkop, 0, sizeof(mkop)); + mkop.mo_ldd = *ldd; + mkop.mo_ldd.ldd_flags &= ~LDD_F_UPDATE; + mkop.mo_flags = MO_NOHOSTID_CHECK; /* Ignore missing hostid */ + if (strlen(source) > sizeof(mkop.mo_device)-1) { + fatal(); + fprintf(stderr, "Device name too long: %s\n", source); + return -E2BIG; + } + strncpy(mkop.mo_device, source, sizeof(mkop.mo_device)); + + ret = osd_prepare_lustre(&mkop, + wanted_mountopts, sizeof(wanted_mountopts)); + if (ret) { + fatal(); + fprintf(stderr, "Can't prepare device %s: %s\n", + source, strerror(ret)); + return ret; + } + + /* Create the loopback file */ + if (mkop.mo_flags & MO_IS_LOOP) { + ret = access(mkop.mo_device, F_OK); + if (ret) { + ret = errno; + fatal(); + fprintf(stderr, "Can't access device %s: %s\n", + source, strerror(ret)); + return ret; + } + + ret = loop_setup(&mkop); + if (ret) { + fatal(); + fprintf(stderr, "Loop device setup for %s failed: %s\n", + mkop.mo_device, strerror(ret)); + return ret; + } + } + ret = osd_write_ldd(&mkop); + if (ret != 0) { + fatal(); + fprintf(stderr, "failed to write local files: %s\n", + strerror(ret)); + } + + ret2 = loop_cleanup(&mkop); + if (ret == 0) + ret = ret2; + + return ret; +} - if (optind + 2 > argc) { - fprintf(stderr, "%s: too few arguments\n", progname); - usage(stderr); - } +static int parse_ldd(char *source, struct mount_opts *mop, + char *options, size_t options_len) +{ + struct lustre_disk_data *ldd = &mop->mo_ldd; + char *cur, *start; + int rc = 0; + + rc = osd_is_lustre(source, &ldd->ldd_mount_type); + if (rc == 0) { + fprintf(stderr, "%s: %s has not been formatted with mkfs.lustre" + " or the backend filesystem type is not supported by " + "this tool\n", progname, source); + return ENODEV; + } + + rc = osd_read_ldd(source, ldd); + if (rc) { + fprintf(stderr, "%s: %s failed to read permanent mount" + " data: %s\n", progname, source, + rc >= 0 ? strerror(rc) : ""); + return rc; + } + + if ((IS_MDT(ldd) || IS_OST(ldd)) && + (ldd->ldd_flags & LDD_F_NEED_INDEX)) { + fprintf(stderr, "%s: %s has no index assigned " + "(probably formatted with old mkfs)\n", + progname, source); + return EINVAL; + } + + if (ldd->ldd_flags & LDD_F_UPGRADE14) { + fprintf(stderr, "%s: we cannot upgrade %s from this (very old) " + "Lustre version\n", progname, source); + return EINVAL; + } + + if (ldd->ldd_flags & LDD_F_UPDATE) + clear_update_ondisk(source, ldd); + + /* Since we never rewrite ldd, ignore temp flags */ + ldd->ldd_flags &= ~(LDD_F_VIRGIN | LDD_F_WRITECONF); + + /* svname of the form lustre:OST1234 means never registered */ + rc = strlen(ldd->ldd_svname); + if (strcmp(ldd->ldd_svname, "MGS") != 0) { + if (rc < 8) { + fprintf(stderr, "%s: invalid name '%s'\n", + progname, ldd->ldd_svname); + return EINVAL; + } else if (ldd->ldd_svname[rc - 8] == ':') { + ldd->ldd_svname[rc - 8] = '-'; + ldd->ldd_flags |= LDD_F_VIRGIN; + } else if (ldd->ldd_svname[rc - 8] == '=') { + ldd->ldd_svname[rc - 8] = '-'; + ldd->ldd_flags |= LDD_F_WRITECONF; + } + } + /* backend osd type */ + rc = append_option(options, options_len, "osd=", + mt_type(ldd->ldd_mount_type)); + if (rc != 0) + return rc; + + rc = append_option(options, options_len, ldd->ldd_mount_opts, NULL); + if (rc != 0) + return rc; + + if (!mop->mo_have_mgsnid) { + /* Only use disk data if mount -o mgsnode=nid wasn't + * specified */ + if (ldd->ldd_flags & LDD_F_SV_TYPE_MGS) { + rc = append_option(options, options_len, "mgs", NULL); + if (rc != 0) + return rc; + mop->mo_have_mgsnid++; + } else { + if (add_mgsnids(mop, options, ldd->ldd_params, + options_len)) + return E2BIG; + } + } + /* Better have an mgsnid by now */ + if (!mop->mo_have_mgsnid) { + fprintf(stderr, "%s: missing option mgsnode=\n", + progname); + return EINVAL; + } + + if (ldd->ldd_flags & LDD_F_VIRGIN) { + rc = append_option(options, options_len, "virgin", NULL); + if (rc != 0) + return rc; + } + if (ldd->ldd_flags & LDD_F_UPDATE) { + rc = append_option(options, options_len, "update", NULL); + if (rc != 0) + return rc; + } + if (ldd->ldd_flags & LDD_F_WRITECONF) { + rc = append_option(options, options_len, "writeconf", NULL); + if (rc != 0) + return rc; + } + if (ldd->ldd_flags & LDD_F_NO_PRIMNODE) { + rc = append_option(options, options_len, "noprimnode", NULL); + if (rc != 0) + return rc; + } + + /* prefix every lustre parameter with param= so that in-kernel + * mount can recognize them properly and send to MGS at registration */ + start = ldd->ldd_params; + while (start && *start != '\0') { + while (*start == ' ') start++; + if (*start == '\0') + break; + cur = start; + start = strchr(cur, ' '); + if (start) { + *start = '\0'; + start++; + } + rc = append_option(options, options_len, "param=", cur); + if (rc != 0) + return rc; + } + + /* svname must be last option */ + rc = append_option(options, options_len, "svname=", ldd->ldd_svname); + + return rc; +} - source = convert_hostnames(argv[optind]); - target = argv[optind + 1]; - ptr = target + strlen(target) - 1; - while ((ptr > target) && (*ptr == '/')) { - *ptr = 0; - ptr--; - } +static void set_defaults(struct mount_opts *mop) +{ + memset(mop, 0, sizeof(*mop)); + mop->mo_usource = NULL; + mop->mo_source = NULL; + mop->mo_nomtab = 0; + mop->mo_fake = 0; + mop->mo_force = 0; + mop->mo_retry = 0; + mop->mo_have_mgsnid = 0; + mop->mo_md_stripe_cache_size = 16384; + mop->mo_orig_options = ""; + mop->mo_nosvc = 0; + mop->mo_max_sectors_kb = -1; +} - if (!source) { - usage(stderr); - } +static int parse_opts(int argc, char *const argv[], struct mount_opts *mop) +{ + static struct option long_opt[] = { + {"fake", 0, 0, 'f'}, + {"force", 0, 0, 1}, + {"help", 0, 0, 'h'}, + {"nomtab", 0, 0, 'n'}, + {"options", 1, 0, 'o'}, + {"verbose", 0, 0, 'v'}, + {"version", 0, 0, 'V'}, + {0, 0, 0, 0} + }; + char real_path[PATH_MAX] = {'\0'}; + FILE *f; + char path[256], name[256]; + size_t sz; + char *ptr; + int opt, rc; + + while ((opt = getopt_long(argc, argv, "fhno:vV", + long_opt, NULL)) != EOF){ + switch (opt) { + case 1: + ++mop->mo_force; + printf("force: %d\n", mop->mo_force); + break; + case 'f': + ++mop->mo_fake; + printf("fake: %d\n", mop->mo_fake); + break; + case 'h': + usage(stdout); + break; + case 'n': + ++mop->mo_nomtab; + printf("nomtab: %d\n", mop->mo_nomtab); + break; + case 'o': + mop->mo_orig_options = optarg; + break; + case 'v': + ++verbose; + break; + case 'V': + ++version; + fprintf(stdout, "%s %s %s\n", progname, + LUSTRE_VERSION_STRING, WITH_LIBMOUNT); + return 0; + default: + fprintf(stderr, "%s: unknown option '%c'\n", + progname, opt); + usage(stderr); + break; + } + } + + if (optind + 2 > argc) { + fprintf(stderr, "%s: too few arguments\n", progname); + usage(stderr); + } + + mop->mo_usource = argv[optind]; + if (!mop->mo_usource) { + usage(stderr); + } + + /** + * Try to get the real path to the device, in case it is a + * symbolic link for instance + */ + if (realpath(mop->mo_usource, real_path) != NULL) { + ptr = strrchr(real_path, '/'); + if (ptr && strncmp(ptr, "/dm-", 4) == 0 && isdigit(*(ptr + 4))) { + snprintf(path, sizeof(path), "/sys/block/%s/dm/name", ptr+1); + if ((f = fopen(path, "r"))) { + /* read "\n" from sysfs */ + if (fgets(name, sizeof(name), f) && (sz = strlen(name)) > 1) { + name[sz - 1] = '\0'; + snprintf(real_path, sizeof(real_path), "/dev/mapper/%s", name); + } + fclose(f); + } + } + mop->mo_usource = strdup(real_path); + } + + ptr = strstr(mop->mo_usource, ":/"); + if (ptr != NULL) { + mop->mo_source = convert_hostnames(mop->mo_usource); + if (!mop->mo_source) + usage(stderr); + } else { + mop->mo_source = strdup(mop->mo_usource); + } + + if (realpath(argv[optind + 1], mop->mo_target) == NULL) { + rc = errno; + fprintf(stderr, "warning: %s: cannot resolve: %s\n", + argv[optind + 1], strerror(errno)); + return rc; + } + + return 0; +} - if (verbose) { - for (i = 0; i < argc; i++) - printf("arg[%d] = %s\n", i, argv[i]); - printf("source = %s, target = %s\n", source, target); - printf("options = %s\n", orig_options); - } +/* change label from : to + * - to indicate the device has + * been registered. only if the label is + * supposed to be changed and target service + * is supposed to start */ +static void label_lustre(struct mount_opts *mop) +{ + if (mop->mo_nosvc) + return; + + if (mop->mo_ldd.ldd_flags & (LDD_F_VIRGIN | LDD_F_WRITECONF)) { + (void)osd_label_lustre(mop); + } else { + struct lustre_disk_data ldd; + int rc; + + /* device label could be changed after journal recovery, + * it should also be relabeled for mount has succeeded. */ + memset(&ldd, 0, sizeof(ldd)); + rc = osd_read_ldd(mop->mo_source, &ldd); + if (rc == 0) { + rc = strlen(ldd.ldd_svname); + if (rc >= 8 && ldd.ldd_svname[rc - 8] != '-') + (void)osd_label_lustre(mop); + } + } +} - options = malloc(strlen(orig_options) + 1); - strcpy(options, orig_options); - rc = parse_options(options, &flags); +int main(int argc, char *const argv[]) +{ + struct mount_opts mop; + char *options; + int i, flags; + int rc; + bool client; + size_t maxopt_len; + size_t g_pagesize; + + progname = strrchr(argv[0], '/'); + progname = progname ? progname + 1 : argv[0]; + + set_defaults(&mop); + + g_pagesize = sysconf(_SC_PAGESIZE); + if (g_pagesize == -1) { + rc = errno; + printf("error: %d failed to get page size.\n", rc); + return rc; + } + maxopt_len = MIN(g_pagesize, 64 * 1024); + + rc = parse_opts(argc, argv, &mop); + if (rc || version) + return rc; + + if (verbose) { + for (i = 0; i < argc; i++) + printf("arg[%d] = %s\n", i, argv[i]); + printf("source = %s (%s), target = %s\n", mop.mo_usource, + mop.mo_source, mop.mo_target); + printf("options = %s\n", mop.mo_orig_options); + } + + options = malloc(maxopt_len); + if (options == NULL) { + fprintf(stderr, "can't allocate memory for options\n"); + rc = ENOMEM; + goto out_mo_source; + } + + if (strlen(mop.mo_orig_options) >= maxopt_len) { + fprintf(stderr, "error: mount options too long\n"); + rc = E2BIG; + goto out_options; + } + + strcpy(options, mop.mo_orig_options); + rc = parse_options(&mop, options, &flags, maxopt_len); if (rc) { fprintf(stderr, "%s: can't parse options: %s\n", progname, options); - return(EINVAL); + rc = EINVAL; + goto out_options; } - if (!force) { - rc = check_mtab_entry(source, target, "lustre"); + if (!mop.mo_force) { + rc = check_mtab_entry(mop.mo_usource, mop.mo_source, + mop.mo_target, "lustre"); if (rc && !(flags & MS_REMOUNT)) { fprintf(stderr, "%s: according to %s %s is " - "already mounted on %s\n", - progname, MOUNTED, source, target); - return(EEXIST); + "already mounted on %s\n", progname, MOUNTED, + mop.mo_usource, mop.mo_target); + rc = EEXIST; + goto out_options; } if (!rc && (flags & MS_REMOUNT)) { fprintf(stderr, "%s: according to %s %s is " - "not already mounted on %s\n", - progname, MOUNTED, source, target); - return(ENOENT); + "not already mounted on %s\n", progname, MOUNTED, + mop.mo_usource, mop.mo_target); + rc = ENOENT; + goto out_options; } } - if (flags & MS_REMOUNT) - nomtab++; - - rc = access(target, F_OK); - if (rc) { - rc = errno; - fprintf(stderr, "%s: %s inaccessible: %s\n", progname, target, - strerror(errno)); - return rc; - } - - /* In Linux 2.4, the target device doesn't get passed to any of our - functions. So we'll stick it on the end of the options. */ - optlen = strlen(options) + strlen(",device=") + strlen(source) + 1; - optcopy = malloc(optlen); - strcpy(optcopy, options); - if (*optcopy) - strcat(optcopy, ","); - strcat(optcopy, "device="); - strcat(optcopy, source); - - if (verbose) - printf("mounting device %s at %s, flags=%#x options=%s\n", - source, target, flags, optcopy); - - if (!fake) - /* flags and target get to lustre_get_sb, but not - lustre_fill_super. Lustre ignores the flags, but mount - does not. */ - rc = mount(source, target, "lustre", flags, (void *)optcopy); + if (flags & MS_REMOUNT) + mop.mo_nomtab++; + + rc = access(mop.mo_target, F_OK); + if (rc) { + rc = errno; + fprintf(stderr, "%s: %s inaccessible: %s\n", progname, + mop.mo_target, strerror(errno)); + goto out_options; + } + + client = (strstr(mop.mo_usource, ":/") != NULL); + if (!client) { + rc = osd_init(); + if (rc) + goto out_options; + + rc = parse_ldd(mop.mo_source, &mop, options, maxopt_len); + if (rc) + goto out_osd; + } + + /* In Linux 2.4, the target device doesn't get passed to any of our + functions. So we'll stick it on the end of the options. */ + rc = append_option(options, maxopt_len, "device=", mop.mo_source); + if (rc != 0) + goto out_osd; + + if (verbose) + printf("mounting device %s at %s, flags=%#x options=%s\n", + mop.mo_source, mop.mo_target, flags, options); + + if (!client && osd_tune_lustre(mop.mo_source, &mop)) { + if (verbose) + fprintf(stderr, "%s: unable to set tunables for %s" + " (may cause reduced IO performance)\n", + argv[0], mop.mo_source); + } + +#ifdef HAVE_GSS + if (mop.mo_skpath[0] != '\0') { + /* Treat shared key failures as fatal */ + rc = load_shared_keys(&mop); + if (rc) { + fprintf(stderr, + "%s: Error loading shared keys: %s\n", + progname, strerror(rc)); + goto out_osd; + } + } +#endif /* HAVE_GSS */ + + if (!mop.mo_fake) { + /* flags and target get to lustre_get_sb(), but not + * lustre_fill_super(). Lustre ignores the flags, but mount + * does not. */ + for (i = 0, rc = -EAGAIN; i <= mop.mo_retry && rc != 0; i++) { + rc = mount(mop.mo_source, mop.mo_target, "lustre", + flags, (void *)options); + if (rc == 0) { + if (!client) + label_lustre(&mop); + } else { + if (verbose) { + fprintf(stderr, "%s: mount %s at %s " + "failed: %s retries left: " + "%d\n", basename(progname), + mop.mo_usource, mop.mo_target, + strerror(errno), + mop.mo_retry - i); + } + + if (mop.mo_retry) { + int limit = i/2 > 5 ? i/2 : 5; + + sleep(1 << limit); + } else { + rc = errno; + } + } + } + } if (rc) { char *cli; rc = errno; - cli = strrchr(source, ':'); - if (cli && (strlen(cli) > 2)) + cli = strrchr(mop.mo_usource, ':'); + if (cli && (strlen(cli) > 2)) cli += 2; else cli = NULL; - fprintf(stderr, "%s: mount %s at %s failed: %s\n", progname, - source, target, strerror(errno)); + fprintf(stderr, "%s: mount %s at %s failed: %s\n", progname, + mop.mo_usource, mop.mo_target, strerror(errno)); + if (errno == EBUSY) + fprintf(stderr, "Is the backend filesystem mounted?\n" + "Check /etc/mtab and /proc/mounts\n"); if (errno == ENODEV) fprintf(stderr, "Are the lustre modules loaded?\n" - "Check /etc/modprobe.conf and /proc/filesystems" - "\nNote 'alias lustre llite' should be removed" - " from modprobe.conf\n"); + "Check /etc/modprobe.conf and " + "/proc/filesystems\n"); if (errno == ENOTBLK) fprintf(stderr, "Do you need -o loop?\n"); if (errno == ENOMEDIUM) - fprintf(stderr, + fprintf(stderr, "This filesystem needs at least 1 OST\n"); if (errno == ENOENT) { fprintf(stderr, "Is the MGS specification correct?\n"); @@ -406,19 +908,19 @@ int main(int argc, char *const argv[]) } if (errno == EALREADY) fprintf(stderr, "The target service is already running." - " (%s)\n", source); + " (%s)\n", mop.mo_usource); if (errno == ENXIO) fprintf(stderr, "The target service failed to start " "(bad config log?) (%s). " - "See /var/log/messages.\n", source); + "See /var/log/messages.\n", mop.mo_usource); if (errno == EIO) fprintf(stderr, "Is the MGS running?\n"); if (errno == EADDRINUSE) fprintf(stderr, "The target service's index is already " - "in use. (%s)\n", source); + "in use. (%s)\n", mop.mo_usource); if (errno == EINVAL) { fprintf(stderr, "This may have multiple causes.\n"); - if (cli) + if (cli) fprintf(stderr, "Is '%s' the correct filesystem" " name?\n", cli); fprintf(stderr, "Are the mount options correct?\n"); @@ -426,18 +928,38 @@ int main(int argc, char *const argv[]) } /* May as well try to clean up loop devs */ - if (strncmp(source, "/dev/loop", 9) == 0) { + if (strncmp(mop.mo_usource, "/dev/loop", 9) == 0) { char cmd[256]; - sprintf(cmd, "/sbin/losetup -d %s", source); - system(cmd); + int ret; + sprintf(cmd, "/sbin/losetup -d %s", mop.mo_usource); + if ((ret = system(cmd)) < 0) + rc = errno; + else if (ret > 0) + rc = WEXITSTATUS(ret); } - } else if (!nomtab) { - rc = update_mtab_entry(source, target, "lustre", orig_options, - 0,0,0); - } - - free(optcopy); - free(source); - return rc; + } else { + /* Deal with utab just for client. Note that we ignore + * the return value here since it is not worth to fail + * mount by prevent some rare cases */ + if (strstr(mop.mo_usource, ":/") != NULL) + update_utab_entry(&mop); + if (!mop.mo_nomtab) { + rc = update_mtab_entry(mop.mo_usource, mop.mo_target, + "lustre", mop.mo_orig_options, + 0, 0, 0); + } + } + +out_osd: + if (!client) + osd_fini(); + +out_options: + free(options); + +out_mo_source: + /* mo_usource should be freed, but we can rely on the kernel */ + free(mop.mo_source); + return rc; }