static int parse_ldd(char *source, struct mount_opts *mop, char *options)
{
struct lustre_disk_data *ldd = &mop->mo_ldd;
char *cur, *start;
int rc;
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 */
append_option(options, "osd=");
strcat(options, mt_type(ldd->ldd_mount_type));
append_option(options, ldd->ldd_mount_opts);
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) {
append_option(options, "mgs");
mop->mo_have_mgsnid++;
} else {
add_mgsnids(mop, options, ldd->ldd_params);
}
}
/* Better have an mgsnid by now */
if (!mop->mo_have_mgsnid) {
fprintf(stderr, "%s: missing option mgsnode=<nid>\n",
progname);
return EINVAL;
}
if (ldd->ldd_flags & LDD_F_VIRGIN)
append_option(options, "virgin");
if (ldd->ldd_flags & LDD_F_UPDATE)
append_option(options, "update");
if (ldd->ldd_flags & LDD_F_WRITECONF)
append_option(options, "writeconf");
if (ldd->ldd_flags & LDD_F_NO_PRIMNODE)
append_option(options, "noprimnode");
/* 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++;
}
append_option(options, "param=");
strcat(options, cur);
}
/* svname must be last option */
append_option(options, "svname=");
strcat(options, ldd->ldd_svname);
return 0;
}
int main(int argc, char *const argv[])
{
struct mkfs_opts mop;
struct lustre_disk_data *ldd = &mop.mo_ldd;
char *mountopts = NULL;
char wanted_mountopts[512] = "";
unsigned mount_type;
int ret = 0;
int ret2 = 0;
progname = strrchr(argv[0], '/');
if (progname != NULL)
progname++;
else
progname = argv[0];
if ((argc < 2) || (argv[argc - 1][0] == '-')) {
usage(stderr);
return EINVAL;
}
memset(&mop, 0, sizeof(mop));
set_defaults(&mop);
/* device is last arg */
strscpy(mop.mo_device, argv[argc - 1], sizeof(mop.mo_device));
ret = osd_init();
if (ret != 0)
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;
ret = osd_read_ldd(mop.mo_device, ldd);
if (ret != 0) {
fatal();
fprintf(stderr, "Failed to read previous Lustre data from %s "
"(%d)\n", mop.mo_device, ret);
goto out;
}
ldd->ldd_flags &= ~(LDD_F_WRITECONF | LDD_F_VIRGIN);
/* 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;
}
if (strstr(ldd->ldd_params, PARAM_MGSNODE))
mop.mo_mgs_failnodes++;
if (verbose > 0)
print_ldd("Read previous values", ldd);
#endif /* TUNEFS */
ret = parse_opts(argc, argv, &mop, &mountopts);
if (ret != 0 || version)
goto out;
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 | LDD_F_UPGRADE14)) ==
(LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) {
fatal();
fprintf(stderr, "Can't find the target index, "
"specify with --index\n");
ret = EINVAL;
goto out;
}
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;
}
if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
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;
}
server_make_name(ldd->ldd_flags, ldd->ldd_svindex,
ldd->ldd_fsname, ldd->ldd_svname);
if (verbose >= 0)
print_ldd("Permanent disk data", ldd);
if (print_only) {
printf("exiting before disk write.\n");
goto out;
}
if (check_mtab_entry(mop.mo_device, mop.mo_device, NULL, NULL))
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 '=' 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);
}
/* Enable quota accounting */
if (mop.mo_flags & MO_QUOTA) {
ret = osd_enable_quota(&mop);
goto out;
}
#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)
verrprint("%s: exiting with %d (%s)\n",
progname, ret, strerror(ret));
return ret;
}