Viewing: mkfs_lustre.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* 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/utils/mkfs_lustre.c
*
* Author: Nathan Rutman <nathan@clusterfs.com>
*/
/* This source file is compiled into both mkfs.lustre and tunefs.lustre */
#if HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <mntent.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/utsname.h>
#include <string.h>
#include <getopt.h>
#include <limits.h>
#include <ctype.h>
#include <linux/lnet/nidstr.h>
#include <linux/lnet/lnetctl.h>
#include <linux/lustre/lustre_user.h>
#include <linux/lustre/lustre_ver.h>
#include <libcfs/util/string.h>
#include "mount_utils.h"
char *progname;
int replace = 0;
int verbose = 1;
static int version;
static int print_only;
#ifdef TUNEFS
static int erase_all;
#endif
enum mkfs_options {
MKFS_OPT_SKIPMMP = 1000,
};
static struct option long_opts[] = {
{.val = MKFS_OPT_SKIPMMP, .name = "skipmmp", .has_arg = no_argument},
{.val = 'B', .name = "backfs-mount-opts",
.has_arg = required_argument},
{.val = 'f', .name = "failnode", .has_arg = required_argument},
{.val = 'f', .name = "failover", .has_arg = required_argument},
{.val = 'G', .name = "mgs", .has_arg = no_argument},
{.val = 'h', .name = "help", .has_arg = no_argument},
{.val = 'i', .name = "index", .has_arg = required_argument},
{.val = 'L', .name = "fsname", .has_arg = required_argument},
{.val = 'm', .name = "mgsnode", .has_arg = required_argument},
{.val = 'm', .name = "mgsnid", .has_arg = required_argument},
{.val = 'n', .name = "dryrun", .has_arg = no_argument},
{.val = 'N', .name = "nomgs", .has_arg = no_argument},
{.val = 'o', .name = "mountfsoptions", .has_arg = required_argument},
{.val = 'p', .name = "param", .has_arg = required_argument},
{.val = 'q', .name = "quiet", .has_arg = no_argument},
{.val = 'R', .name = "replace", .has_arg = no_argument},
{.val = 's', .name = "servicenode", .has_arg = required_argument},
{.val = 't', .name = "network", .has_arg = required_argument},
{.val = 'u', .name = "comment", .has_arg = required_argument},
{.val = 'U', .name = "force-nohostid", .has_arg = no_argument},
{.val = 'v', .name = "verbose", .has_arg = no_argument},
{.val = 'V', .name = "version", .has_arg = no_argument},
#ifndef TUNEFS
{.val = 'b', .name = "backfstype", .has_arg = required_argument},
{.val = 'c', .name = "stripe-count-hint",
.has_arg = required_argument},
{.val = 'd', .name = "device-size", .has_arg = required_argument},
{.val = 'k', .name = "mkfsoptions", .has_arg = required_argument},
{.val = 'M', .name = "mdt", .has_arg = no_argument},
{.val = 'O', .name = "ost", .has_arg = no_argument},
{.val = 'r', .name = "reformat", .has_arg = no_argument},
#else
{.val = 'E', .name = "erase-param", .has_arg = required_argument},
{.val = 'e', .name = "erase-params", .has_arg = no_argument},
{.val = 'l', .name = "nolocallogs", .has_arg = no_argument},
{.val = 'M', .name = "mountdata-reset-from",
.has_arg = required_argument},
{.val = 'Q', .name = "quota", .has_arg = no_argument},
{.val = 'r', .name = "rename", .has_arg = optional_argument},
{.val = 'w', .name = "writeconf", .has_arg = no_argument},
#endif
{}
};
static char *short_opts = "B:f:Ghi:L:m:nNo:p:qRs:t:u:UvV"
#ifndef TUNEFS
"b:c:d:k:MOr";
#else
"E:elM:Qr::w";
#endif
static void usage(FILE *out)
{
if (backfs_mount_type_loaded(LDD_MT_LDISKFS)) {
fprintf(out,
"usage: %s <target type> --backfstype=ldiskfs --fsname=<filesystem name>\n"
"\t--index=<target index> [options] <device>\n"
"\t--skipmmp: don't add Multi-Mount Protection when failover is configured.\n"
"\tUse with caution - only if alternate mount protection is in place\n\n",
progname);
}
if (backfs_mount_type_loaded(LDD_MT_ZFS)) {
fprintf(out, "usage: %s <target type> --backfstype=zfs "
"--fsname=<filesystem name> [options]\n"
"\t<pool name>/<dataset name>\n"
"\t[[<vdev type>] <device> [<device> ...] [vdev type>] ...]\n",
progname);
fprintf(out,
"\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
"\t<pool name>: name of ZFS pool where target is created "
"(e.g. tank)\n"
"\t<dataset name>: name of new dataset, must be unique within "
"pool (e.g. ost1)\n"
"\t<vdev type>: type of vdev (mirror, raidz, raidz2, spare, "
"cache, log)\n");
}
fprintf(out,
"\n"
"\ttarget types:\n"
"\t\t--mgs: configuration management service\n"
"\t\t--nomgs: turn off MGS service on this MDT\n"
#ifndef TUNEFS
"\t\t--mdt: metadata storage, mutually exclusive with ost\n"
"\t\t--ost: object storage, mutually exclusive with mdt, mgs\n\n"
#endif
"\toptions (in order of popularity):\n"
"\t\t--index=#N: numerical target index (0..N)\n"
"\t\t\trequired for all targets other than the MGS,\n"
"\t\t\ttarget index may either be a decimal number or\n"
"\t\t\thexadecimal number starting with '0x'\n"
"\t\t--fsname=<8_char_filesystem_name>: fs targets belong to\n"
"\t\t\trequired for all targets other than MGS\n"
"\t\t--mgsnode=<nid>[,<...>]: NID(s) of remote MGS\n"
"\t\t\trequired for all targets other than MGS\n"
"\t\t--mountfsoptions=<opts>: permanent Lustre mount options\n"
"\t\t--backfs-mount-opts=<opts>: backing fs mount options\n"
"\t\t--failnode=<nid>[,<...>]: NID(s) of backup failover node\n"
"\t\t\tmutually exclusive with --servicenode\n"
"\t\t--servicenode=<nid>[,<...>]: NID(s) of service partners\n"
"\t\t\ttreat nodes as equal service node, mutually exclusive "
"with --failnode\n"
"\t\t--param <key>=<value>: set a permanent parameter\n"
"\t\t\te.g. --param sys.timeout=40\n"
"\t\t\t --param lov.stripesize=2M\n"
"\t\t--network=<net>[,<...>]: restrict OST/MDT to network(s)\n"
#ifndef TUNEFS
"\t\t--backfstype=<fstype>: backing fs type (ldiskfs, zfs)\n"
"\t\t--device-size=#N(KB): device size for loop devices\n"
"\t\t--mkfsoptions=<opts>: format options\n"
"\t\t--reformat: overwrite an existing disk\n"
"\t\t--stripe-count-hint=#N: for optimizing MDT inode size\n"
#else
"\t\t--erase-param <key>: erase all instances of a parameter\n"
"\t\t--erase-params: erase all old parameter settings\n"
"\t\t--writeconf: erase all config logs for this fs.\n"
"\t\t--nolocallogs: use logs from MGS, not local ones.\n"
"\t\t--quota: enable space accounting on old 2.x device.\n"
"\t\t--rename: rename the filesystem name\n"
"\t\t--mountdata-reset-from=<dev|file>: reset CONFIGS/mountdata file.\n"
#endif
"\t\t--replace: replace an old target with the same index\n"
"\t\t--comment=<user comment>: arbitrary string (%d bytes)\n"
"\t\t--dryrun: report what we would do; don't write to disk\n"
"\t\t--verbose: e.g. show mkfs progress\n"
"\t\t--force-nohostid: Ignore hostid requirement for ZFS "
"import\n"
"\t\t-V|--version: output build version of the utility and\n"
"\t\t\texit\n"
"\t\t--quiet\n",
(int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
}
static void print_ldd(char *str, struct mkfs_opts *mop)
{
struct lustre_disk_data *ldd = &mop->mo_ldd;
printf("\n %s:\n", str);
printf("Device: %s\n", mop->mo_device);
printf("Target: %s\n", ldd->ldd_svname);
if (ldd->ldd_svindex == INDEX_UNASSIGNED)
printf("Index: unassigned\n");
else
printf("Index: %d\n", ldd->ldd_svindex);
if (ldd->ldd_uuid[0])
printf("UUID: %s\n", (char *)ldd->ldd_uuid);
printf("Lustre FS: %s\n", ldd->ldd_fsname);
printf("Mount type: %s\n", MT_STR(ldd));
printf("Flags: %#x\n", ldd->ldd_flags);
printf(" (%s%s%s%s%s%s%s%s%s)\n",
IS_MDT(ldd) ? "MDT " : "",
IS_OST(ldd) ? "OST " : "",
IS_MGS(ldd) ? "MGS " : "",
ldd->ldd_flags & LDD_F_NEED_INDEX ? "needs_index " : "",
ldd->ldd_flags & LDD_F_VIRGIN ? "first_time " : "",
ldd->ldd_flags & LDD_F_UPDATE ? "update " : "",
ldd->ldd_flags & LDD_F_WRITECONF ? "writeconf " : "",
ldd->ldd_flags & LDD_F_NO_PRIMNODE ? "no_primnode " : "",
ldd->ldd_flags & LDD_F_NO_LOCAL_LOGS ? "nolocallogs " : "");
printf("Persistent mount opts: %s\n", ldd->ldd_mount_opts);
osd_print_ldd_params(mop);
if (ldd->ldd_userdata[0])
printf("Comment: %s\n", ldd->ldd_userdata);
printf("\n");
}
static void set_defaults(struct mkfs_opts *mop)
{
mop->mo_ldd.ldd_magic = LDD_MAGIC;
mop->mo_ldd.ldd_config_ver = 1;
mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
#ifdef HAVE_LDISKFS_OSD
mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
#else
mop->mo_ldd.ldd_mount_type = LDD_MT_ZFS;
#endif
mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
mop->mo_mgs_failnodes = 0;
mop->mo_stripe_count = 1;
mop->mo_pool_vdevs = NULL;
}
/* Make the mdt/ost server obd name based on the filesystem name */
static bool server_make_name(__u32 flags, __u16 index, const char *fs,
char *name_buf, size_t name_buf_size)
{
bool invalid_flag = false;
if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
char reg_flag = '-';
if (flags & LDD_F_WRITECONF)
reg_flag = '=';
else if (flags & LDD_F_VIRGIN)
reg_flag = ':';
else if (flags & LDD_F_NO_LOCAL_LOGS)
reg_flag = '+';
if (!(flags & LDD_F_SV_ALL))
snprintf(name_buf, name_buf_size, "%.8s%c%s%04x", fs,
reg_flag,
(flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
index);
} else if (flags & LDD_F_SV_TYPE_MGS) {
snprintf(name_buf, name_buf_size, "MGS");
} else {
fprintf(stderr, "unknown server type %#x\n", flags);
invalid_flag = true;
}
return invalid_flag;
}
static inline void badopt(const char *opt, char *type)
{
fprintf(stderr, "%s: '--%s' only valid for %s\n",
progname, opt, type);
usage(stderr);
}
#ifdef TUNEFS
/**
* erase_param() - Removes all existing instances depending upon param
* @buf: the buffer holding on-disk server parameters.
* @param: the parameter whose instances are to be removed from \a buf.
* @withval: true means the parameter is in the form of "key=<value>"
* false means the parameter is in the form of "key"
*
* Removes all existing instances of the parameter passed in \a param,
* which are in the form of "key=<value>", from the buffer at \a buf.
*
* The parameter can be either in the form of "key" when passed by option
* "--erase-param", or in the form of "key=<value>" when passed by option
* "--param".
*
* Return:
* * %0 success, parameter was erased,
* * %1 success, parameter was not found, don't need to do erase_ldd,
* * %-EINVAL failure, invalid input parameter.
*/
static int erase_param(const char *const buf, const char *const param,
bool withval)
{
char search[PARAM_MAX + 8] = "";
char *buffer = (char *)buf;
bool found = false;
if (strlen(param) > PARAM_MAX) {
fprintf(stderr, "%s: param to erase is too long-\n%s\n",
progname, param);
return EINVAL;
}
/* add_param() writes a space as the first character in ldd_params */
search[0] = ' ';
/* "key" or "key=<value>" */
if (withval) {
const char *keyend;
keyend = strchr(param, '=');
if (!keyend)
return EINVAL;
strncpy(&search[1], param, keyend - param + 1);
} else {
snprintf(search + 1, sizeof(search) - 1, "%s=", param);
}
while (1) {
char *space;
buffer = strstr(buffer, search);
if (!buffer)
return found == true ? 0 : 1;
found = true;
space = strchr(buffer + 1, ' ');
if (space) {
memmove(buffer, space, strlen(space) + 1);
} else {
*buffer = '\0';
return 0;
}
}
}
#endif
static int parse_opts_early(int argc, char *const argv[], struct mkfs_opts *mop)
{
int opt;
int i;
/* If no argument is given, bail out */
if (argc < 2) {
usage(stderr);
return EINVAL;
}
while ((opt = getopt_long(argc, argv, short_opts, long_opts,
NULL)) != EOF) {
switch (opt) {
#ifndef TUNEFS
case 'b': {
i = 0;
do {
if (strcmp(optarg, mt_str(i)) == 0) {
mop->mo_ldd.ldd_mount_type = i;
break;
}
} while (++i < LDD_MT_LAST);
if (i == LDD_MT_LAST) {
fprintf(stderr,
"%s: invalid backend filesystem type %s\n",
progname, optarg);
return 1;
}
break;
}
#else
case 'e':
erase_all++;
break;
#endif
case 'h':
usage(stdout);
return 1;
case 'q':
verbose--;
break;
case 'v':
verbose++;
break;
case 'V':
version++;
fprintf(stdout, "%s %s\n", progname,
LUSTRE_VERSION_STRING);
return 0;
default:
break;
}
}
if (optind == argc) {
/* The user didn't specify device name */
fatal();
fprintf(stderr,
"Not enough arguments - device name or pool/dataset name not specified.\n");
return EINVAL;
}
/* The device or pool/filesystem name */
strscpy(mop->mo_device, argv[optind], sizeof(mop->mo_device));
if (optind < argc - 1) {
#ifndef TUNEFS
/* Followed by optional vdevs */
if (mop->mo_ldd.ldd_mount_type == LDD_MT_ZFS) {
mop->mo_pool_vdevs = (char **)&argv[optind + 1];
} else
#endif
{
#ifndef TUNEFS
fprintf(stderr,
"%s: Only one device is allowed for backfstype %s, but multiple devices are specified:",
progname, mt_str(mop->mo_ldd.ldd_mount_type));
#else
fprintf(stderr,
"%s: Only one device is allowed, but multiple devices are specified:",
progname);
#endif
for (i = optind; i < argc; i++)
fprintf(stderr, " %s", argv[i]);
fprintf(stderr, "\n");
return EINVAL;
}
}
return 0;
}
static int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
char **mountopts, char *old_fsname, char *mountdata_arg)
{
struct lustre_disk_data *ldd = &mop->mo_ldd;
char new_fsname[16] = { 0 };
int opt;
int rc, longidx;
int failnode_set = 0, servicenode_set = 0;
bool index_option = false;
optind = 0;
while ((opt = getopt_long(argc, argv, short_opts, long_opts,
&longidx)) != EOF) {
switch (opt) {
case MKFS_OPT_SKIPMMP:
mop->mo_flags |= MO_SKIPMMP;
break;
case 'B':
mop->mo_mountopts = optarg;
break;
case 'f':
case 's': {
char *nids;
if ((opt == 'f' && servicenode_set) ||
(opt == 's' && failnode_set)) {
fprintf(stderr, "%s: %s cannot use with --%s\n",
progname, long_opts[longidx].name,
opt == 'f' ? "servicenode" :
"failnode");
return 1;
}
nids = convert_hostnames(optarg, false);
if (!nids)
return 1;
rc = append_param(ldd->ldd_params, PARAM_FAILNODE,
nids, ':');
free(nids);
if (rc != 0)
return rc;
/* Must update the mgs logs */
ldd->ldd_flags |= LDD_F_UPDATE;
if (opt == 'f') {
ldd->ldd_flags &= ~LDD_F_NO_PRIMNODE;
failnode_set = 1;
} else {
ldd->ldd_flags |= LDD_F_NO_PRIMNODE;
servicenode_set = 1;
}
mop->mo_flags |= MO_FAILOVER;
break;
}
case 'G':
ldd->ldd_flags |= LDD_F_SV_TYPE_MGS;
break;
case 'h':
/* Already handled in parse_opts_early() */
break;
case 'i': {
char *endptr = NULL;
int base;
index_option = true;
/* LU-2374: check whether it is OST/MDT later */
base = (strlen(optarg) > 1 &&
!strncmp(optarg, "0x", 2)) ? 16 : 10;
/* Allowed input are base 16 and base 10 numbers only */
mop->mo_ldd.ldd_svindex = strtoul(optarg,
&endptr, base);
if (*endptr != '\0') {
fprintf(stderr,
"%s: wrong index %s. Target index must be decimal or hexadecimal.\n",
progname, optarg);
return 1;
}
if (ldd->ldd_svindex > LOV_V1_INSANE_STRIPE_INDEX) {
fprintf(stderr,
"%s: wrong index %u. Target index must be less than %u.\n",
progname, ldd->ldd_svindex,
LOV_V1_INSANE_STRIPE_INDEX + 1);
return 1;
}
ldd->ldd_flags &= ~LDD_F_NEED_INDEX;
break;
}
case 'L': {
const char *tmp;
size_t len;
len = strlen(optarg);
if (len < 1 || len > LUSTRE_MAXFSNAME) {
fprintf(stderr,
"%s: filesystem name must be 1-%d chars\n",
progname, LUSTRE_MAXFSNAME);
return 1;
}
for (tmp = optarg; *tmp != '\0'; ++tmp) {
if (isalnum(*tmp) || *tmp == '_' || *tmp == '-')
continue;
else
break;
}
if (*tmp != '\0') {
fprintf(stderr,
"%s: char '%c' not allowed in filesystem name\n",
progname, *tmp);
return 1;
}
strscpy(new_fsname, optarg, sizeof(new_fsname));
break;
}
case 'm': {
char *nids = convert_hostnames(optarg, false);
if (!nids)
return 1;
rc = append_param(ldd->ldd_params, PARAM_MGSNODE,
nids, ':');
free(nids);
if (rc != 0)
return rc;
mop->mo_mgs_failnodes++;
break;
}
case 'n':
print_only++;
break;
case 'N':
ldd->ldd_flags &= ~LDD_F_SV_TYPE_MGS;
break;
case 'o':
*mountopts = optarg;
break;
case 'p':
#ifdef TUNEFS
/*
* Removes all existing instances of the parameter
* before adding new values.
*/
rc = erase_param(ldd->ldd_params, optarg, true);
if (rc > 1)
return rc;
#endif
rc = add_param(ldd->ldd_params, NULL, optarg);
if (rc != 0)
return rc;
/* Must update the mgs logs */
ldd->ldd_flags |= LDD_F_UPDATE;
break;
case 'q':
/* Already handled in parse_opts_early() */
break;
case 'R':
replace = 1;
break;
case 't':
if (!IS_MDT(ldd) && !IS_OST(ldd)) {
badopt(long_opts[longidx].name, "MDT,OST");
return 1;
}
if (!optarg)
return 1;
rc = add_param(ldd->ldd_params, PARAM_NETWORK, optarg);
if (rc != 0)
return rc;
/* Must update the mgs logs */
ldd->ldd_flags |= LDD_F_UPDATE;
break;
case 'u':
strscpy(ldd->ldd_userdata, optarg,
sizeof(ldd->ldd_userdata));
break;
case 'U':
mop->mo_flags |= MO_NOHOSTID_CHECK;
break;
case 'v':
case 'V':
/* Already handled in parse_opts_early() */
break;
#ifndef TUNEFS
case 'b':
/* Already handled in parse_opts_early() */
break;
case 'c':
if (IS_MDT(ldd)) {
int stripe_count = atol(optarg);
if (stripe_count <= 0) {
fprintf(stderr,
"%s: bad stripe count %s\n",
progname, optarg);
return 1;
}
mop->mo_stripe_count = stripe_count;
} else {
badopt(long_opts[longidx].name, "MDT");
return 1;
}
break;
case 'd':
mop->mo_device_kb = atol(optarg);
break;
case 'k':
strscpy(mop->mo_mkfsopts, optarg,
sizeof(mop->mo_mkfsopts));
break;
case 'M':
ldd->ldd_flags |= LDD_F_SV_TYPE_MDT;
break;
case 'O':
ldd->ldd_flags |= LDD_F_SV_TYPE_OST;
break;
case 'r':
mop->mo_flags |= MO_FORCEFORMAT;
break;
#else /* TUNEFS */
case 'E':
rc = erase_param(ldd->ldd_params, optarg, false);
/*
* (rc == 1) means not found, so don't need to
* call osd_erase_ldd().
*/
if (rc > 1)
return rc;
if (!rc) {
rc = osd_erase_ldd(mop, optarg);
if (rc)
return rc;
}
/* Must update the mgs logs */
ldd->ldd_flags |= LDD_F_UPDATE;
break;
case 'e':
/* Already handled in parse_opts_early() */
break;
case 'Q':
mop->mo_flags |= MO_QUOTA;
break;
case 'r': {
char *tmp;
mop->mo_flags |= MO_RENAME;
if (!optarg) {
if (IS_SEPARATED_MGS(ldd)) {
fprintf(stderr,
"%s: must specify the old fsname to be renamed for separated MGS\n",
progname);
return 1;
}
break;
}
if ((strlen(optarg) < 1) || (strlen(optarg) > 8)) {
fprintf(stderr,
"%s: filesystem name must be 1-8 chars\n",
progname);
return 1;
}
tmp = strpbrk(optarg, "/:");
if (tmp) {
fprintf(stderr,
"%s: char '%c' not allowed in filesystem name\n",
progname, *tmp);
return 1;
}
if (IS_SEPARATED_MGS(ldd)) {
strscpy(old_fsname, optarg,
sizeof(ldd->ldd_fsname));
} else if (strlen(old_fsname) != strlen(optarg) ||
strcmp(old_fsname, optarg) != 0) {
fprintf(stderr,
"%s: the given fsname '%s' to be renamed does not exist\n",
progname, optarg);
return 1;
}
break;
}
case 'M':
if (access(optarg, F_OK) != 0) {
fprintf(stderr, "%s: Given path does not exist (%s)",
progname, optarg);
return 1;
}
strscpy(mountdata_arg, optarg, PATH_MAX);
break;
case 'w':
ldd->ldd_flags |= LDD_F_WRITECONF;
break;
case 'l':
if (ldd->ldd_flags & (LDD_F_VIRGIN | LDD_F_WRITECONF)) {
fprintf(stderr, "Can not apply nolocallogs to the target that was writeconfed or never been registered\n");
return EINVAL;
}
ldd->ldd_flags |= LDD_F_NO_LOCAL_LOGS;
break;
#endif /* !TUNEFS */
default:
if (opt != '?') {
fatal();
fprintf(stderr, "Unknown option '%c'\n", opt);
}
return EINVAL;
}
}
if (mop->mo_flags & MO_FAILOVER && mop->mo_flags & MO_SKIPMMP) {
fprintf(stderr,
"Disabling Multi-Mount Protection on the failover-configured target.\n"
"It may allow simultaneous mounts from multiple nodes, and could cause data\n"
"corruption. Only use --skipmmp if there is alternative mount protection\n");
}
if (ldd->ldd_mount_type == LDD_MT_ZFS &&
(ldd->ldd_flags & LDD_F_SV_TYPE_OST)) {
rc = add_param(ldd->ldd_params, PARAM_AUTODEGRADE, "on");
if (rc)
return rc;
}
if (strlen(new_fsname) > 0) {
if (!(mop->mo_flags & (MO_FORCEFORMAT | MO_RENAME)) &&
(!(ldd->ldd_flags & (LDD_F_VIRGIN | LDD_F_WRITECONF)))) {
fprintf(stderr,
"%s: cannot change the name of a registered target\n",
progname);
return 1;
}
strscpy(ldd->ldd_fsname, new_fsname, sizeof(ldd->ldd_fsname));
}
if (index_option && !(mop->mo_ldd.ldd_flags &
(LDD_F_VIRGIN | LDD_F_WRITECONF))) {
fprintf(stderr,
"%s: cannot change the index of a registered target\n",
progname);
return 1;
}
#ifdef TUNEFS
if (mop->mo_flags & MO_RENAME) {
if (new_fsname[0] == '\0') {
fprintf(stderr,
"%s: need to specify new fsname for renaming case\n",
progname);
return 1;
}
if (strcmp(old_fsname, new_fsname) == 0) {
fprintf(stderr,
"%s: cannot rename fsname '%s' to the same name\n",
progname, old_fsname);
return 1;
}
}
#endif
/* Need to clear this flag after parsing 'L' and 'i' options. */
if (replace)
ldd->ldd_flags &= ~LDD_F_VIRGIN;
return 0;
}
int main(int argc, char *const argv[])
{
struct mkfs_opts mop;
#ifdef TUNEFS
struct mkfs_opts prev_mop;
#endif
struct lustre_disk_data *ldd = &mop.mo_ldd;
char *mountopts = NULL;
char wanted_mountopts[512] = "";
char old_fsname[16] = "";
char mountdata_arg[PATH_MAX] = "";
unsigned int mount_type;
int ret = 0;
int ret2 = 0;
progname = strrchr(argv[0], '/');
if (progname)
progname++;
else
progname = argv[0];
ret = osd_init();
if (ret != 0) {
fprintf(stderr, "%s: no OSD plugins found: %d (%s)\n",
progname, ret, strerror(ret));
return ret;
}
memset(&mop, 0, sizeof(mop));
set_defaults(&mop);
ret = parse_opts_early(argc, argv, &mop);
if (ret != 0 || version) {
osd_fini();
return ret;
}
#ifdef TUNEFS
/*
* For tunefs, we must read in the old values before parsing any
* new ones.
*/
/* Check whether the disk has already been formatted by mkfs.lustre */
ret = osd_is_lustre(mop.mo_device, &mount_type);
if (ret == 0) {
fatal();
fprintf(stderr,
"Device %s has not been formatted with mkfs.lustre\n",
mop.mo_device);
ret = ENODEV;
goto out;
}
ldd->ldd_mount_type = mount_type;
ret2 = osd_read_ldd(mop.mo_device, ldd);
strscpy(old_fsname, ldd->ldd_fsname, sizeof(ldd->ldd_fsname));
ldd->ldd_flags &= ~(LDD_F_WRITECONF | LDD_F_VIRGIN |
LDD_F_NO_LOCAL_LOGS);
/* svname of the form lustre:OST1234 means never registered */
ret = strlen(ldd->ldd_svname);
if (ldd->ldd_svname[ret - 8] == ':') {
ldd->ldd_svname[ret - 8] = '-';
ldd->ldd_flags |= LDD_F_VIRGIN;
} else if (ldd->ldd_svname[ret - 8] == '=') {
ldd->ldd_svname[ret - 8] = '-';
ldd->ldd_flags |= LDD_F_WRITECONF;
} else if (ldd->ldd_svname[ret - 8] == '+') {
ldd->ldd_svname[ret - 8] = '-';
ldd->ldd_flags |= LDD_F_NO_LOCAL_LOGS;
}
if (strstr(ldd->ldd_params, PARAM_MGSNODE))
mop.mo_mgs_failnodes++;
if (verbose > 0)
print_ldd("Read previous values", &mop);
memcpy(&prev_mop, &mop, sizeof(prev_mop));
/*
* For the right semantics, if '-e'/'--erase-params' is specified,
* it must be picked out and all old parameters should be erased
* before any other changes are done.
*/
if (erase_all) {
ldd->ldd_params[0] = '\0';
mop.mo_flags |= MO_ERASE_ALL;
ldd->ldd_flags |= LDD_F_UPDATE;
}
#endif /* TUNEFS */
ret = parse_opts(argc, argv, &mop, &mountopts, old_fsname,
mountdata_arg);
if (ret != 0)
goto out;
#ifdef TUNEFS
/* Reset mountdata */
if (mountdata_arg[0] != '\0') {
ret = osd_mountdata_reset(&mop, mountdata_arg);
if (ret != 0)
goto out;
if (verbose > 0)
print_ldd("Updated values", &mop);
goto write;
}
if (ret2 != 0) {
fatal();
fprintf(stderr,
"Failed to read previous Lustre data from %s (%s)\n",
mop.mo_device, strerror(ret2));
goto out;
}
/*
* Skip the no-change shortcut when -o/--mountfsoptions was given:
* @mountopts is only copied into ldd_mount_opts further below, so
* the change is not yet visible in @mop here.
*/
if (mountopts == NULL &&
memcmp(&prev_mop, &mop, sizeof(prev_mop)) == 0) {
if (verbose > 0)
fprintf(stdout,
"exiting because there is no change.\n");
goto out;
}
#endif
if (!IS_MDT(ldd) && !IS_OST(ldd) && !IS_MGS(ldd)) {
fatal();
fprintf(stderr, "must set target type: MDT,OST,MGS\n");
ret = EINVAL;
goto out;
}
if (((IS_MDT(ldd) || IS_MGS(ldd))) && IS_OST(ldd)) {
fatal();
fprintf(stderr, "OST type is exclusive with MDT,MGS\n");
ret = EINVAL;
goto out;
}
/* Stand alone MGS doesn't need an index */
if (!IS_MDT(ldd) && IS_MGS(ldd)) {
#ifndef TUNEFS
/* But if --index was specified flag an error */
if (!(ldd->ldd_flags & LDD_F_NEED_INDEX)) {
badopt("index", "MDT,OST");
goto out;
}
#endif
ldd->ldd_flags &= ~LDD_F_NEED_INDEX;
}
if (ldd->ldd_flags & LDD_F_NEED_INDEX)
fprintf(stderr,
"warning: %s: for Lustre 2.4 and later, the target index must be specified with --index\n",
mop.mo_device);
/* If no index is supplied for MDT by default set index to zero */
if (IS_MDT(ldd) && (ldd->ldd_svindex == INDEX_UNASSIGNED)) {
ldd->ldd_flags &= ~LDD_F_NEED_INDEX;
ldd->ldd_svindex = 0;
}
#ifndef TUNEFS
if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
#else
/*
* Don't check --mgs or --mgsnode if print_only is set or
* --erase-params is set.
*/
if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0) && !print_only &&
!(mop.mo_flags & MO_ERASE_ALL)) {
#endif
fatal();
if (IS_MDT(ldd))
fprintf(stderr, "Must specify --mgs or --mgsnode\n");
else
fprintf(stderr, "Must specify --mgsnode\n");
ret = EINVAL;
goto out;
}
if ((IS_MDT(ldd) || IS_OST(ldd)) && ldd->ldd_fsname[0] == '\0') {
fatal();
fprintf(stderr, "Must specify --fsname for MDT/OST device\n");
ret = EINVAL;
goto out;
}
/* These are the permanent mount options (always included) */
ret = osd_prepare_lustre(&mop,
wanted_mountopts, sizeof(wanted_mountopts));
if (ret != 0) {
fatal();
fprintf(stderr, "unable to prepare backend (%d)\n", ret);
goto out;
}
if (mountopts) {
trim_mountfsoptions(mountopts);
if (check_mountfsoptions(mountopts, wanted_mountopts)) {
ret = EINVAL;
goto out;
}
snprintf(ldd->ldd_mount_opts, sizeof(ldd->ldd_mount_opts),
"%s", mountopts);
} else {
#ifdef TUNEFS
if (ldd->ldd_mount_opts[0] == 0)
/* use the defaults unless old opts exist */
#endif
{
snprintf(ldd->ldd_mount_opts,
sizeof(ldd->ldd_mount_opts),
"%s", wanted_mountopts);
trim_mountfsoptions(ldd->ldd_mount_opts);
}
}
ret = osd_fix_mountopts(&mop, ldd->ldd_mount_opts,
sizeof(ldd->ldd_mount_opts));
if (ret != 0) {
fatal();
fprintf(stderr, "unable to fix mountfsoptions (%d)\n", ret);
goto out;
}
if (server_make_name(ldd->ldd_flags, ldd->ldd_svindex,
ldd->ldd_fsname, ldd->ldd_svname,
sizeof(ldd->ldd_svname))) {
printf("unknown server type %#x\n", ldd->ldd_flags);
goto out;
}
if (verbose > 0)
print_ldd("Permanent disk data", &mop);
if (print_only) {
printf("exiting before disk write.\n");
goto out;
}
if (check_mtab_entry(mop.mo_device, NULL, NULL, NULL)) {
fprintf(stderr, "%s: is currently mounted, exiting without any change\n",
mop.mo_device);
return EEXIST;
}
/* Create the loopback file */
if (mop.mo_flags & MO_IS_LOOP) {
ret = access(mop.mo_device, F_OK);
if (ret != 0)
ret = errno;
#ifndef TUNEFS
/* Reformat the loopback file */
if (ret != 0 || (mop.mo_flags & MO_FORCEFORMAT)) {
ret = loop_format(&mop);
if (ret != 0)
goto out;
}
#endif
if (ret == 0)
ret = loop_setup(&mop);
if (ret != 0) {
fatal();
fprintf(stderr, "Loop device setup for %s failed: %s\n",
mop.mo_device, strerror(ret));
goto out;
}
}
#ifndef TUNEFS
/* Check whether the disk has already been formatted by mkfs.lustre */
if (!(mop.mo_flags & MO_FORCEFORMAT)) {
ret = osd_is_lustre(mop.mo_device, &mount_type);
if (ret != 0) {
fatal();
fprintf(stderr,
"Device %s was previously formatted for lustre. Use --reformat to reformat it, or tunefs.lustre to modify.\n",
mop.mo_device);
goto out;
}
}
/* Format the backing filesystem */
ret = osd_make_lustre(&mop);
if (ret != 0) {
fatal();
fprintf(stderr, "mkfs failed %d\n", ret);
goto out;
}
#else /* TUNEFS */
/* update svname with '-' */
if (replace) {
struct mount_opts opts;
opts.mo_ldd = *ldd;
opts.mo_source = mop.mo_device;
(void)osd_label_lustre(&opts);
}
/* update svname with '=' to refresh config */
if (ldd->ldd_flags & LDD_F_WRITECONF) {
struct mount_opts opts;
opts.mo_ldd = *ldd;
opts.mo_source = mop.mo_device;
(void)osd_label_lustre(&opts);
}
/* update svname with '+' to force remote logs */
if (ldd->ldd_flags & LDD_F_NO_LOCAL_LOGS) {
struct mount_opts opts;
opts.mo_ldd = *ldd;
opts.mo_source = mop.mo_device;
(void) osd_label_lustre(&opts);
}
/* Rename filesystem fsname */
if (mop.mo_flags & MO_RENAME) {
ret = osd_rename_fsname(&mop, old_fsname);
if (ret)
goto out;
}
/* Enable quota accounting */
if (mop.mo_flags & MO_QUOTA) {
ret = osd_enable_quota(&mop);
goto out;
}
write:
#endif /* !TUNEFS */
/* Write our config files */
ret = osd_write_ldd(&mop);
if (ret != 0) {
fatal();
fprintf(stderr, "failed to write local files\n");
goto out;
}
out:
osd_fini();
ret2 = loop_cleanup(&mop);
if (ret == 0)
ret = ret2;
/* Fix any crazy return values from system() */
if (ret != 0 && ((ret & 255) == 0))
return 1;
if (ret != 0)
fprintf(stderr, "%s: exiting with %d (%s)\n",
progname, ret, strerror(ret));
return ret;
}
