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mdadm/Create.c

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/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
* Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
* Email: <neilb@suse.de>
*/
#include "mdadm.h"
#include "md_u.h"
#include "md_p.h"
#include <ctype.h>
static int default_layout(struct supertype *st, int level, int verbose)
{
int layout = UnSet;
if (st && st->ss->default_geometry)
st->ss->default_geometry(st, &level, &layout, NULL);
if (layout == UnSet)
switch(level) {
default: /* no layout */
layout = 0;
break;
case 10:
layout = 0x102; /* near=2, far=1 */
if (verbose > 0)
fprintf(stderr,
Name ": layout defaults to n2\n");
break;
case 5:
case 6:
layout = map_name(r5layout, "default");
if (verbose > 0)
fprintf(stderr,
Name ": layout defaults to %s\n", map_num(r5layout, layout));
break;
case LEVEL_FAULTY:
layout = map_name(faultylayout, "default");
if (verbose > 0)
fprintf(stderr,
Name ": layout defaults to %s\n", map_num(faultylayout, layout));
break;
}
return layout;
}
int Create(struct supertype *st, char *mddev,
int chunk, int level, int layout, unsigned long long size,
int raiddisks, int sparedisks,
char *name, char *homehost, int *uuid,
int subdevs, struct mddev_dev *devlist,
int runstop, int verbose, int force, int assume_clean,
char *bitmap_file, int bitmap_chunk, int write_behind,
int delay, int autof)
{
/*
* Create a new raid array.
*
* First check that necessary details are available
* (i.e. level, raid-disks)
*
* Then check each disk to see what might be on it
* and report anything interesting.
*
* If anything looks odd, and runstop not set,
* abort.
*
* SET_ARRAY_INFO and ADD_NEW_DISK, and
* if runstop==run, or raiddisks disks were used,
* RUN_ARRAY
*/
int mdfd;
unsigned long long minsize=0, maxsize=0;
char *mindisc = NULL;
char *maxdisc = NULL;
int dnum;
struct mddev_dev *dv;
int fail=0, warn=0;
struct stat stb;
int first_missing = subdevs * 2;
int second_missing = subdevs * 2;
int missing_disks = 0;
int insert_point = subdevs * 2; /* where to insert a missing drive */
int total_slots;
int pass;
int vers;
int rv;
int bitmap_fd;
int have_container = 0;
int container_fd = -1;
int need_mdmon = 0;
unsigned long long bitmapsize;
struct mdinfo info, *infos;
int did_default = 0;
int do_default_layout = 0;
int do_default_chunk = 0;
unsigned long safe_mode_delay = 0;
char chosen_name[1024];
struct map_ent *map = NULL;
unsigned long long newsize;
int major_num = BITMAP_MAJOR_HI;
memset(&info, 0, sizeof(info));
if (level == UnSet && st && st->ss->default_geometry)
st->ss->default_geometry(st, &level, NULL, NULL);
if (level == UnSet) {
fprintf(stderr,
Name ": a RAID level is needed to create an array.\n");
return 1;
}
if (raiddisks < 4 && level == 6) {
fprintf(stderr,
Name ": at least 4 raid-devices needed for level 6\n");
return 1;
}
if (raiddisks > 256 && level == 6) {
fprintf(stderr,
Name ": no more than 256 raid-devices supported for level 6\n");
return 1;
}
if (raiddisks < 2 && level >= 4) {
fprintf(stderr,
Name ": at least 2 raid-devices needed for level 4 or 5\n");
return 1;
}
if (level <= 0 && sparedisks) {
fprintf(stderr,
Name ": This level does not support spare devices\n");
return 1;
}
if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
/* If given a single device, it might be a container, and we can
* extract a device list from there
*/
mdu_array_info_t inf;
int fd;
memset(&inf, 0, sizeof(inf));
fd = open(devlist->devname, O_RDONLY);
if (fd >= 0 &&
ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
inf.raid_disks == 0) {
/* yep, looks like a container */
if (st) {
rv = st->ss->load_container(st, fd,
devlist->devname);
if (rv == 0)
have_container = 1;
} else {
st = super_by_fd(fd, NULL);
if (st && !(rv = st->ss->
load_container(st, fd,
devlist->devname)))
have_container = 1;
else
st = NULL;
}
if (have_container) {
subdevs = raiddisks;
first_missing = subdevs * 2;
second_missing = subdevs * 2;
insert_point = subdevs * 2;
}
}
if (fd >= 0)
close(fd);
}
if (st && st->ss->external && sparedisks) {
fprintf(stderr,
Name ": This metadata type does not support "
"spare disks at create time\n");
return 1;
}
if (subdevs > raiddisks+sparedisks) {
fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
return 1;
}
if (!have_container && subdevs < raiddisks+sparedisks) {
fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
return 1;
}
if (bitmap_file && level <= 0) {
fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
map_num(pers, level)?:"given");
return 1;
}
/* now set some defaults */
if (layout == UnSet) {
do_default_layout = 1;
layout = default_layout(st, level, verbose);
}
if (level == 10)
/* check layout fits in array*/
if ((layout&255) * ((layout>>8)&255) > raiddisks) {
fprintf(stderr, Name ": that layout requires at least %d devices\n",
(layout&255) * ((layout>>8)&255));
return 1;
}
switch(level) {
case 4:
case 5:
case 10:
case 6:
case 0:
if (chunk == 0 || chunk == UnSet) {
chunk = UnSet;
do_default_chunk = 1;
/* chunk will be set later */
}
break;
case LEVEL_LINEAR:
/* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */
if (get_linux_version() < 2006016 && chunk == 0) {
chunk = 64;
if (verbose > 0)
fprintf(stderr, Name ": chunk size defaults to 64K\n");
}
break;
case 1:
case LEVEL_FAULTY:
case LEVEL_MULTIPATH:
case LEVEL_CONTAINER:
if (chunk) {
chunk = 0;
if (verbose > 0)
fprintf(stderr, Name ": chunk size ignored for this level\n");
}
break;
default:
fprintf(stderr, Name ": unknown level %d\n", level);
return 1;
}
if (size && chunk && chunk != UnSet)
size &= ~(unsigned long long)(chunk - 1);
newsize = size * 2;
if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
&chunk, size*2, NULL, &newsize, verbose>=0))
return 1;
if (chunk && chunk != UnSet) {
newsize &= ~(unsigned long long)(chunk*2 - 1);
if (do_default_chunk) {
/* default chunk was just set */
if (verbose > 0)
fprintf(stderr, Name ": chunk size "
"defaults to %dK\n", chunk);
size &= ~(unsigned long long)(chunk - 1);
do_default_chunk = 0;
}
}
if (size == 0) {
size = newsize / 2;
if (size && verbose > 0)
fprintf(stderr, Name ": setting size to %lluK\n",
(unsigned long long)size);
}
/* now look at the subdevs */
info.array.active_disks = 0;
info.array.working_disks = 0;
dnum = 0;
for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
char *dname = dv->devname;
unsigned long long freesize;
int dfd;
if (strcasecmp(dname, "missing")==0) {
if (first_missing > dnum)
first_missing = dnum;
if (second_missing > dnum && dnum > first_missing)
second_missing = dnum;
missing_disks ++;
continue;
}
dfd = open(dname, O_RDONLY);
if (dfd < 0) {
fprintf(stderr, Name ": cannot open %s: %s\n",
dname, strerror(errno));
exit(2);
}
if (fstat(dfd, &stb) != 0 ||
(stb.st_mode & S_IFMT) != S_IFBLK) {
close(dfd);
fprintf(stderr, Name ": %s is not a block device\n",
dname);
exit(2);
}
close(dfd);
info.array.working_disks++;
if (dnum < raiddisks)
info.array.active_disks++;
if (st == NULL) {
struct createinfo *ci = conf_get_create_info();
if (ci)
st = ci->supertype;
}
if (st == NULL) {
/* Need to choose a default metadata, which is different
* depending on geometry of array.
*/
int i;
char *name = "default";
for(i=0; !st && superlist[i]; i++) {
st = superlist[i]->match_metadata_desc(name);
if (do_default_layout)
layout = default_layout(st, level, verbose);
if (st && !st->ss->validate_geometry
(st, level, layout, raiddisks,
&chunk, size*2, dname, &freesize,
verbose > 0)) {
free(st);
st = NULL;
chunk = do_default_chunk ? UnSet : chunk;
}
}
if (!st) {
int dfd = open(dname, O_RDONLY|O_EXCL);
if (dfd < 0) {
fprintf(stderr, Name ": cannot open %s: %s\n",
dname, strerror(errno));
exit(2);
}
fprintf(stderr, Name ": device %s not suitable "
"for any style of array\n",
dname);
exit(2);
}
if (st->ss != &super0 ||
st->minor_version != 90)
did_default = 1;
} else {
if (do_default_layout)
layout = default_layout(st, level, verbose);
if (!st->ss->validate_geometry(st, level, layout,
raiddisks,
&chunk, size*2, dname,
&freesize,
verbose >= 0)) {
fprintf(stderr,
Name ": %s is not suitable for "
"this array.\n",
dname);
fail = 1;
continue;
}
}
freesize /= 2; /* convert to K */
if (chunk && chunk != UnSet) {
/* round to chunk size */
freesize = freesize & ~(chunk-1);
if (do_default_chunk) {
/* default chunk was just set */
if (verbose > 0)
fprintf(stderr, Name ": chunk size "
"defaults to %dK\n", chunk);
size &= ~(unsigned long long)(chunk - 1);
do_default_chunk = 0;
}
}
if (size && freesize < size) {
fprintf(stderr, Name ": %s is smaller than given size."
" %lluK < %lluK + metadata\n",
dname, freesize, size);
fail = 1;
continue;
}
if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
maxdisc = dname;
maxsize = freesize;
}
if (mindisc ==NULL || (mindisc && freesize < minsize)) {
mindisc = dname;
minsize = freesize;
}
if (runstop != 1 || verbose >= 0) {
int fd = open(dname, O_RDONLY);
if (fd <0 ) {
fprintf(stderr, Name ": Cannot open %s: %s\n",
dname, strerror(errno));
fail=1;
continue;
}
warn |= check_ext2(fd, dname);
warn |= check_reiser(fd, dname);
warn |= check_raid(fd, dname);
if (strcmp(st->ss->name, "1.x") == 0 &&
st->minor_version >= 1)
/* metadata at front */
warn |= check_partitions(fd, dname, 0, 0);
else if (level == 1 || level == LEVEL_CONTAINER
|| (level == 0 && raiddisks == 1))
/* partitions could be meaningful */
warn |= check_partitions(fd, dname, freesize*2, size*2);
else
/* partitions cannot be meaningful */
warn |= check_partitions(fd, dname, 0, 0);
if (strcmp(st->ss->name, "1.x") == 0 &&
st->minor_version >= 1 &&
did_default &&
level == 1 &&
(warn & 1024) == 0) {
warn |= 1024;
fprintf(stderr, Name ": Note: this array has metadata at the start and\n"
" may not be suitable as a boot device. If you plan to\n"
" store '/boot' on this device please ensure that\n"
" your boot-loader understands md/v1.x metadata, or use\n"
" --metadata=0.90\n");
}
close(fd);
}
}
if (raiddisks + sparedisks > st->max_devs) {
fprintf(stderr, Name ": Too many devices:"
" %s metadata only supports %d\n",
st->ss->name, st->max_devs);
return 1;
}
if (have_container)
info.array.working_disks = raiddisks;
if (fail) {
fprintf(stderr, Name ": create aborted\n");
return 1;
}
if (size == 0) {
if (mindisc == NULL && !have_container) {
fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
return 1;
}
if (level > 0 || level == LEVEL_MULTIPATH
|| level == LEVEL_FAULTY
|| st->ss->external ) {
/* size is meaningful */
if (!st->ss->validate_geometry(st, level, layout,
raiddisks,
&chunk, minsize*2,
NULL, NULL, 0)) {
fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
return 1;
}
size = minsize;
if (verbose > 0)
fprintf(stderr, Name ": size set to %lluK\n", size);
}
}
if (!have_container && level > 0 && ((maxsize-size)*100 > maxsize)) {
if (runstop != 1 || verbose >= 0)
fprintf(stderr, Name ": largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
maxdisc, size);
warn = 1;
}
if (st->ss->detail_platform && st->ss->detail_platform(0, 1) != 0) {
if (runstop != 1 || verbose >= 0)
fprintf(stderr, Name ": %s unable to enumerate platform support\n"
" array may not be compatible with hardware/firmware\n",
st->ss->name);
warn = 1;
}
if (warn) {
if (runstop!= 1) {
if (!ask("Continue creating array? ")) {
fprintf(stderr, Name ": create aborted.\n");
return 1;
}
} else {
if (verbose > 0)
fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
}
}
/* If this is raid4/5, we want to configure the last active slot
* as missing, so that a reconstruct happens (faster than re-parity)
* FIX: Can we do this for raid6 as well?
*/
if (st->ss->external == 0 &&
assume_clean==0 && force == 0 && first_missing >= raiddisks) {
switch ( level ) {
case 4:
case 5:
insert_point = raiddisks-1;
sparedisks++;
info.array.active_disks--;
missing_disks++;
break;
default:
break;
}
}
/* For raid6, if creating with 1 missing drive, make a good drive
* into a spare, else the create will fail
*/
if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
st->ss->external == 0 &&
second_missing >= raiddisks && level == 6) {
insert_point = raiddisks - 1;
if (insert_point == first_missing)
insert_point--;
sparedisks ++;
info.array.active_disks--;
missing_disks++;
}
if (level <= 0 && first_missing < subdevs * 2) {
fprintf(stderr,
Name ": This level does not support missing devices\n");
return 1;
}
/* We need to create the device */
map_lock(&map);
mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
if (mdfd < 0)
return 1;
mddev = chosen_name;
vers = md_get_version(mdfd);
if (vers < 9000) {
fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
goto abort;
} else {
mdu_array_info_t inf;
memset(&inf, 0, sizeof(inf));
ioctl(mdfd, GET_ARRAY_INFO, &inf);
if (inf.working_disks != 0) {
fprintf(stderr, Name ": another array by this name"
" is already running.\n");
goto abort;
}
}
/* Ok, lets try some ioctls */
info.array.level = level;
info.array.size = size;
info.array.raid_disks = raiddisks;
/* The kernel should *know* what md_minor we are dealing
* with, but it chooses to trust me instead. Sigh
*/
info.array.md_minor = 0;
if (fstat(mdfd, &stb)==0)
info.array.md_minor = minor(stb.st_rdev);
info.array.not_persistent = 0;
if ( ( (level == 4 || level == 5) &&
(insert_point < raiddisks || first_missing < raiddisks) )
||
( level == 6 && (insert_point < raiddisks
|| second_missing < raiddisks))
||
( level <= 0 )
||
assume_clean
) {
info.array.state = 1; /* clean, but one+ drive will be missing*/
info.resync_start = MaxSector;
} else {
info.array.state = 0; /* not clean, but no errors */
info.resync_start = 0;
}
if (level == 10) {
/* for raid10, the bitmap size is the capacity of the array,
* which is array.size * raid_disks / ncopies;
* .. but convert to sectors.
*/
int ncopies = ((layout>>8) & 255) * (layout & 255);
bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
/* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
} else
bitmapsize = (unsigned long long)size * 2;
/* There is lots of redundancy in these disk counts,
* raid_disks is the most meaningful value
* it describes the geometry of the array
* it is constant
* nr_disks is total number of used slots.
* it should be raid_disks+spare_disks
* spare_disks is the number of extra disks present
* see above
* active_disks is the number of working disks in
* active slots. (With raid_disks)
* working_disks is the total number of working disks,
* including spares
* failed_disks is the number of disks marked failed
*
* Ideally, the kernel would keep these (except raid_disks)
* up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
* So for now, we assume that all raid and spare
* devices will be given.
*/
info.array.spare_disks=sparedisks;
info.array.failed_disks=missing_disks;
info.array.nr_disks = info.array.working_disks
+ info.array.failed_disks;
info.array.layout = layout;
info.array.chunk_size = chunk*1024;
if (name == NULL || *name == 0) {
/* base name on mddev */
/* /dev/md0 -> 0
* /dev/md_d0 -> d0
* /dev/md/1 -> 1
* /dev/md/d1 -> d1
* /dev/md/home -> home
* /dev/mdhome -> home
*/
/* FIXME compare this with rules in create_mddev */
name = strrchr(mddev, '/');
if (name) {
name++;
if (strncmp(name, "md_d", 4)==0 &&
strlen(name) > 4 &&
isdigit(name[4]) &&
(name-mddev) == 5 /* /dev/ */)
name += 3;
else if (strncmp(name, "md", 2)==0 &&
strlen(name) > 2 &&
isdigit(name[2]) &&
(name-mddev) == 5 /* /dev/ */)
name += 2;
}
}
if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
goto abort;
total_slots = info.array.nr_disks;
st->ss->getinfo_super(st, &info, NULL);
sysfs_init(&info, mdfd, 0);
if (did_default && verbose >= 0) {
if (is_subarray(info.text_version)) {
int dnum = devname2devnum(info.text_version+1);
char *path;
int mdp = get_mdp_major();
struct mdinfo *mdi;
if (dnum > 0)
path = map_dev(MD_MAJOR, dnum, 1);
else
path = map_dev(mdp, (-1-dnum)<< 6, 1);
mdi = sysfs_read(-1, dnum, GET_VERSION);
fprintf(stderr, Name ": Creating array inside "
"%s container %s\n",
mdi?mdi->text_version:"managed", path);
sysfs_free(mdi);
} else
fprintf(stderr, Name ": Defaulting to version"
" %s metadata\n", info.text_version);
}
map_update(&map, fd2devnum(mdfd), info.text_version,
info.uuid, chosen_name);
map_unlock(&map);
if (bitmap_file && vers < 9003) {
major_num = BITMAP_MAJOR_HOSTENDIAN;
#ifdef __BIG_ENDIAN
fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
" between different architectured. Consider upgrading the Linux kernel.\n");
#endif
}
if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
if ((vers%100) < 2) {
fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
goto abort;
}
if (!st->ss->add_internal_bitmap) {
fprintf(stderr, Name ": internal bitmaps not supported with %s metadata\n",
st->ss->name);
goto abort;
}
if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
delay, write_behind,
bitmapsize, 1, major_num)) {
fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
goto abort;
}
bitmap_file = NULL;
}
sysfs_init(&info, mdfd, 0);
if (st->ss->external && st->container_dev != NoMdDev) {
/* member */
/* When creating a member, we need to be careful
* to negotiate with mdmon properly.
* If it is already running, we cannot write to
* the devices and must ask it to do that part.
* If it isn't running, we write to the devices,
* and then start it.
* We hold an exclusive open on the container
* device to make sure mdmon doesn't exit after
* we checked that it is running.
*
* For now, fail if it is already running.
*/
container_fd = open_dev_excl(st->container_dev);
if (container_fd < 0) {
fprintf(stderr, Name ": Cannot get exclusive "
"open on container - weird.\n");
goto abort;
}
if (mdmon_running(st->container_dev)) {
if (verbose)
fprintf(stderr, Name ": reusing mdmon "
"for %s.\n",
devnum2devname(st->container_dev));
st->update_tail = &st->updates;
} else
need_mdmon = 1;
}
rv = set_array_info(mdfd, st, &info);
if (rv) {
fprintf(stderr, Name ": failed to set array info for %s: %s\n",
mddev, strerror(errno));
goto abort;
}
if (bitmap_file) {
int uuid[4];
st->ss->uuid_from_super(st, uuid);
if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
delay, write_behind,
bitmapsize,
major_num)) {
goto abort;
}
bitmap_fd = open(bitmap_file, O_RDWR);
if (bitmap_fd < 0) {
fprintf(stderr, Name ": weird: %s cannot be openned\n",
bitmap_file);
goto abort;
}
if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
mddev, strerror(errno));
goto abort;
}
}
infos = malloc(sizeof(*infos) * total_slots);
for (pass=1; pass <=2 ; pass++) {
struct mddev_dev *moved_disk = NULL; /* the disk that was moved out of the insert point */
for (dnum=0, dv = devlist ; dv ;
dv=(dv->next)?(dv->next):moved_disk, dnum++) {
int fd;
struct stat stb;
struct mdinfo *inf = &infos[dnum];
if (dnum >= total_slots)
abort();
if (dnum == insert_point) {
moved_disk = dv;
continue;
}
if (strcasecmp(dv->devname, "missing")==0)
continue;
if (have_container)
moved_disk = NULL;
if (have_container && dnum < info.array.raid_disks - 1)
/* repeatedly use the container */
moved_disk = dv;
switch(pass) {
case 1:
*inf = info;
inf->disk.number = dnum;
inf->disk.raid_disk = dnum;
if (inf->disk.raid_disk < raiddisks)
inf->disk.state = (1<<MD_DISK_ACTIVE) |
(1<<MD_DISK_SYNC);
else
inf->disk.state = 0;
if (dv->writemostly == 1)
inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
if (have_container)
fd = -1;
else {
if (st->ss->external &&
st->container_dev != NoMdDev)
fd = open(dv->devname, O_RDWR);
else
fd = open(dv->devname, O_RDWR|O_EXCL);
if (fd < 0) {
fprintf(stderr, Name ": failed to open %s "
"after earlier success - aborting\n",
dv->devname);
goto abort;
}
fstat(fd, &stb);
inf->disk.major = major(stb.st_rdev);
inf->disk.minor = minor(stb.st_rdev);
}
if (fd >= 0)
remove_partitions(fd);
if (st->ss->add_to_super(st, &inf->disk,
fd, dv->devname)) {
ioctl(mdfd, STOP_ARRAY, NULL);
goto abort;
}
st->ss->getinfo_super(st, inf, NULL);
safe_mode_delay = inf->safe_mode_delay;
if (have_container && verbose > 0)
fprintf(stderr, Name ": Using %s for device %d\n",
map_dev(inf->disk.major,
inf->disk.minor,
0), dnum);
if (!have_container) {
/* getinfo_super might have lost these ... */
inf->disk.major = major(stb.st_rdev);
inf->disk.minor = minor(stb.st_rdev);
/* FIXME the following should not be needed
* as getinfo_super is suppose to set
* them. However it doesn't for imsm,
* so we have this hack for now
*/
if (st->ss == &super_imsm) {
inf->disk.number = dnum;
inf->disk.raid_disk = dnum;
}
}
break;
case 2:
inf->errors = 0;
rv = add_disk(mdfd, st, &info, inf);
if (rv) {
fprintf(stderr,
Name ": ADD_NEW_DISK for %s "
"failed: %s\n",
dv->devname, strerror(errno));
goto abort;
}
break;
}
if (!have_container &&
dv == moved_disk && dnum != insert_point) break;
}
if (pass == 1) {
struct mdinfo info_new;
struct map_ent *me = NULL;
/* check to see if the uuid has changed due to these
* metadata changes, and if so update the member array
* and container uuid. Note ->write_init_super clears
* the subarray cursor such that ->getinfo_super once
* again returns container info.
*/
map_lock(&map);
st->ss->getinfo_super(st, &info_new, NULL);
if (st->ss->external && level != LEVEL_CONTAINER &&
!same_uuid(info_new.uuid, info.uuid, 0)) {
map_update(&map, fd2devnum(mdfd),
info_new.text_version,
info_new.uuid, chosen_name);
me = map_by_devnum(&map, st->container_dev);
}
if (st->ss->write_init_super(st)) {
fprintf(stderr,
Name ": Failed to write metadata to %s\n",
dv->devname);
st->ss->free_super(st);
goto abort;
}
/* update parent container uuid */
if (me) {
char *path = strdup(me->path);
st->ss->getinfo_super(st, &info_new, NULL);
map_update(&map, st->container_dev,
info_new.text_version,
info_new.uuid, path);
free(path);
}
map_unlock(&map);
flush_metadata_updates(st);
st->ss->free_super(st);
}
}
free(infos);
if (level == LEVEL_CONTAINER) {
/* No need to start. But we should signal udev to
* create links */
sysfs_uevent(&info, "change");
if (verbose >= 0)
fprintf(stderr, Name ": container %s prepared.\n", mddev);
wait_for(chosen_name, mdfd);
} else if (runstop == 1 || subdevs >= raiddisks) {
if (st->ss->external) {
int err;
switch(level) {
case LEVEL_LINEAR:
case LEVEL_MULTIPATH:
case 0:
err = sysfs_set_str(&info, NULL, "array_state",
"active");
need_mdmon = 0;
break;
default:
err = sysfs_set_str(&info, NULL, "array_state",
"readonly");
break;
}
sysfs_set_safemode(&info, safe_mode_delay);
if (err) {
fprintf(stderr, Name ": failed to"
" activate array.\n");
ioctl(mdfd, STOP_ARRAY, NULL);
goto abort;
}
} else {
/* param is not actually used */
mdu_param_t param;
if (ioctl(mdfd, RUN_ARRAY, &param)) {
fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
strerror(errno));
if (info.array.chunk_size & (info.array.chunk_size-1)) {
fprintf(stderr, " : Problem may be that "
"chunk size is not a power of 2\n");
}
ioctl(mdfd, STOP_ARRAY, NULL);
goto abort;
}
}
if (verbose >= 0)
fprintf(stderr, Name ": array %s started.\n", mddev);
if (st->ss->external && st->container_dev != NoMdDev) {
if (need_mdmon)
start_mdmon(st->container_dev);
ping_monitor_by_id(st->container_dev);
close(container_fd);
}
wait_for(chosen_name, mdfd);
} else {
fprintf(stderr, Name ": not starting array - not enough devices.\n");
}
close(mdfd);
return 0;
abort:
map_lock(&map);
map_remove(&map, fd2devnum(mdfd));
map_unlock(&map);
if (mdfd >= 0)
close(mdfd);
return 1;
}
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