* - Choose a free, high number.
* - Use a partitioned device unless strong suggestion not to.
* e.g. auto=md
+ * Don't choose partitioned for containers.
* 5/ Find out if array already exists
* 5a/ if it does not
* - choose a name, from mdadm.conf or 'name' field in array.
* - add the device
* 6/ Make sure /var/run/mdadm.map contains this array.
* 7/ Is there enough devices to possibly start the array?
+ * For a container, this means running Incremental_container.
* 7a/ if not, finish with success.
* 7b/ if yes,
* - read all metadata and arrange devices like -A does
* start the array (auto-readonly).
*/
struct stat stb;
- struct mdinfo info, info2;
+ struct mdinfo info;
struct mddev_ident_s *array_list, *match;
char chosen_name[1024];
int rv;
int dfd, mdfd;
char *avail;
int active_disks;
-
+ int uuid_for_name = 0;
+ char *name_to_use;
+ char nbuf[64];
struct createinfo *ci = conf_get_create_info();
if (autof == 0)
autof = ci->autof;
- /* 1/ Check if devices is permitted by mdadm.conf */
+ /* 1/ Check if device is permitted by mdadm.conf */
if (!conf_test_dev(devname)) {
if (verbose >= 0)
}
close (dfd);
- if (st->ss->container_content) {
+ if (st->ss->container_content && st->loaded_container) {
/* This is a pre-built container array, so we do something
* rather different.
*/
autof);
}
+ memset(&info, 0, sizeof(info));
st->ss->getinfo_super(st, &info);
/* 3/ Check if there is a match in mdadm.conf */
/* 3a/ if not, check for homehost match. If no match, reject. */
if (!match) {
if (homehost == NULL ||
- st->ss->match_home(st, homehost) == 0) {
- if (verbose >= 0)
- fprintf(stderr, Name
- ": not found in mdadm.conf and not identified by homehost.\n");
- return 2;
- }
+ st->ss->match_home(st, homehost) != 1)
+ uuid_for_name = 1;
}
/* 4/ Determine device number. */
/* - If in mdadm.conf with std name, use that */
/* - Choose a free, high number. */
/* - Use a partitioned device unless strong suggestion not to. */
/* e.g. auto=md */
+ mp = map_by_uuid(&map, info.uuid);
+
+ if (uuid_for_name && ! mp) {
+ name_to_use = fname_from_uuid(st, &info, nbuf);
+ if (verbose >= 0)
+ fprintf(stderr, Name
+ ": not found in mdadm.conf and not identified by homehost"
+ " - using uuid based name\n");
+ } else
+ name_to_use = info.name;
+
if (match && is_standard(match->devname, &devnum))
/* We have devnum now */;
- else if ((mp = map_by_uuid(&map, info.uuid)) != NULL)
+ else if (mp != NULL)
devnum = mp->devnum;
else {
/* Have to guess a bit. */
int use_partitions = 1;
char *np, *ep;
+ char *nm, nbuf[1024];
+ struct stat stb2;
+
if ((autof&7) == 3 || (autof&7) == 5)
use_partitions = 0;
- np = strchr(info.name, ':');
+ if (st->ss->external)
+ use_partitions = 0;
+ np = strchr(name_to_use, ':');
if (np)
np++;
else
- np = info.name;
+ np = name_to_use;
devnum = strtoul(np, &ep, 10);
if (ep > np && *ep == 0) {
/* This is a number. Let check that it is unused. */
} else
devnum = -1;
+ if (match)
+ nm = match->devname;
+ else {
+ sprintf(nbuf, "/dev/md/%s", np);
+ nm = nbuf;
+ }
+ if (stat(nm, &stb2) == 0 &&
+ S_ISBLK(stb2.st_mode) &&
+ major(stb2.st_rdev) == (use_partitions ?
+ get_mdp_major() : MD_MAJOR)) {
+ if (use_partitions)
+ devnum = minor(stb2.st_rdev) >> MdpMinorShift;
+ else
+ devnum = minor(stb2.st_rdev);
+ if (mddev_busy(use_partitions ? (-1-devnum) : devnum))
+ devnum = -1;
+ }
+
if (devnum < 0) {
/* Haven't found anything yet, choose something free */
devnum = find_free_devnum(use_partitions);
} else
devnum = use_partitions ? (-1-devnum) : devnum;
}
- mdfd = open_mddev_devnum(match ? match->devname : NULL,
+
+ mdfd = open_mddev_devnum(match ? match->devname : mp ? mp->path : NULL,
devnum,
- info.name,
+ name_to_use,
chosen_name, autof >> 3);
if (mdfd < 0) {
fprintf(stderr, Name ": failed to open %s: %s.\n",
chosen_name, strerror(errno));
return 2;
}
+ sysfs_init(&info, mdfd, 0);
+
/* 5/ Find out if array already exists */
if (! mddev_busy(devnum)) {
/* 5a/ if it does not */
/* - choose a name, from mdadm.conf or 'name' field in array. */
/* - create the array */
/* - add the device */
- mdu_array_info_t ainf;
- mdu_disk_info_t disk;
- char md[20];
struct mdinfo *sra;
+ struct mdinfo dinfo;
- memset(&ainf, 0, sizeof(ainf));
- ainf.major_version = st->ss->major;
- ainf.minor_version = st->minor_version;
- if (ioctl(mdfd, SET_ARRAY_INFO, &ainf) != 0) {
- fprintf(stderr, Name
- ": SET_ARRAY_INFO failed for %s: %s\b",
+ if (set_array_info(mdfd, st, &info) != 0) {
+ fprintf(stderr, Name ": failed to set array info for %s: %s\n",
chosen_name, strerror(errno));
close(mdfd);
return 2;
}
- sprintf(md, "%d.%d\n", st->ss->major, st->minor_version);
- sra = sysfs_read(mdfd, devnum, GET_VERSION);
- sysfs_set_str(sra, NULL, "metadata_version", md);
- memset(&disk, 0, sizeof(disk));
- disk.major = major(stb.st_rdev);
- disk.minor = minor(stb.st_rdev);
- sysfs_free(sra);
- if (ioctl(mdfd, ADD_NEW_DISK, &disk) != 0) {
+
+ dinfo = info;
+ dinfo.disk.major = major(stb.st_rdev);
+ dinfo.disk.minor = minor(stb.st_rdev);
+ if (add_disk(mdfd, st, &info, &dinfo) != 0) {
fprintf(stderr, Name ": failed to add %s to %s: %s.\n",
devname, chosen_name, strerror(errno));
ioctl(mdfd, STOP_ARRAY, 0);
sysfs_free(sra);
return 2;
}
+ info.array.working_disks = 1;
+ sysfs_free(sra);
} else {
/* 5b/ if it does */
/* - check one drive in array to make sure metadata is a reasonably */
/* - add the device */
char dn[20];
int dfd2;
- mdu_disk_info_t disk;
int err;
struct mdinfo *sra;
struct supertype *st2;
- sra = sysfs_read(mdfd, devnum, (GET_VERSION | GET_DEVS |
- GET_STATE));
+ struct mdinfo info2, *d;
+ sra = sysfs_read(mdfd, devnum, (GET_DEVS | GET_STATE));
- if (sra->array.major_version != st->ss->major ||
- sra->array.minor_version != st->minor_version) {
- if (verbose >= 0)
- fprintf(stderr, Name
- ": %s has different metadata to chosen array %s %d.%d %d.%d.\n",
- devname, chosen_name,
- sra->array.major_version,
- sra->array.minor_version,
- st->ss->major, st->minor_version);
- close(mdfd);
- return 1;
- }
sprintf(dn, "%d:%d", sra->devs->disk.major,
sra->devs->disk.minor);
dfd2 = dev_open(dn, O_RDONLY);
st2 = dup_super(st);
- if (st2->ss->load_super(st2, dfd2, NULL)) {
+ if (st2->ss->load_super(st2, dfd2, NULL) ||
+ st->ss->compare_super(st, st2) != 0) {
fprintf(stderr, Name
- ": Strange error loading metadata for %s.\n",
- chosen_name);
+ ": metadata mismatch between %s and "
+ "chosen array %s\n",
+ devname, chosen_name);
close(mdfd);
close(dfd2);
return 2;
}
close(dfd2);
+ memset(&info2, 0, sizeof(info2));
st2->ss->getinfo_super(st2, &info2);
st2->ss->free_super(st2);
if (info.array.level != info2.array.level ||
close(mdfd);
return 2;
}
- memset(&disk, 0, sizeof(disk));
- disk.major = major(stb.st_rdev);
- disk.minor = minor(stb.st_rdev);
- err = ioctl(mdfd, ADD_NEW_DISK, &disk);
+ info2.disk.major = major(stb.st_rdev);
+ info2.disk.minor = minor(stb.st_rdev);
+ /* add disk needs to know about containers */
+ if (st->ss->external)
+ sra->array.level = LEVEL_CONTAINER;
+ err = add_disk(mdfd, st2, sra, &info2);
if (err < 0 && errno == EBUSY) {
/* could be another device present with the same
* disk.number. Find and reject any such
*/
find_reject(mdfd, st, sra, info.disk.number,
info.events, verbose, chosen_name);
- err = ioctl(mdfd, ADD_NEW_DISK, &disk);
+ err = add_disk(mdfd, st2, sra, &info2);
}
if (err < 0) {
fprintf(stderr, Name ": failed to add %s to %s: %s.\n",
close(mdfd);
return 2;
}
+ info.array.working_disks = 0;
+ for (d = sra->devs; d; d=d->next)
+ info.array.working_disks ++;
+
}
/* 6/ Make sure /var/run/mdadm.map contains this array. */
map_update(&map, devnum,
- info.array.major_version,
- info.array.minor_version,
+ info.text_version,
info.uuid, chosen_name);
/* 7/ Is there enough devices to possibly start the array? */
/* 7a/ if not, finish with success. */
+ if (info.array.level == LEVEL_CONTAINER) {
+ /* Try to assemble within the container */
+ close(mdfd);
+ if (verbose >= 0)
+ fprintf(stderr, Name
+ ": container %s now has %d devices\n",
+ chosen_name, info.array.working_disks);
+ return Incremental(chosen_name, verbose, runstop,
+ NULL, homehost, autof);
+ }
avail = NULL;
active_disks = count_active(st, mdfd, &avail, &info);
if (enough(info.array.level, info.array.raid_disks,
path = map_dev(MD_MAJOR, md->devnum, 0);
else
path = map_dev(mdp, (-1-md->devnum)<< 6, 0);
- map_add(&map, md->devnum, st->ss->major,
- st->minor_version,
+ map_add(&map, md->devnum,
+ info.text_version,
info.uuid, path ? : "/unknown");
st->ss->free_super(st);
break;
return rv;
}
+static char *container2devname(char *devname)
+{
+ int fd = open(devname, O_RDONLY);
+ char *mdname = NULL;
+
+ if (fd >= 0) {
+ mdname = devnum2devname(fd2devnum(fd));
+ close(fd);
+ }
+
+ return mdname;
+}
+
int Incremental_container(struct supertype *st, char *devname, int verbose,
int runstop, int autof)
{
struct mdinfo *list = st->ss->container_content(st);
struct mdinfo *ra;
+ char *mdname = container2devname(devname);
+
+ if (!mdname) {
+ fprintf(stderr, Name": failed to determine device name\n");
+ return 2;
+ }
for (ra = list ; ra ; ra = ra->next) {
- struct mdinfo *sra;
struct mdinfo *dev;
int devnum = -1;
int mdfd;
char chosen_name[1024];
int usepart = 1;
char *n;
- int working = 0;
+ int working = 0, preexist = 0;
+ struct map_ent *mp, *map = NULL;
+ char nbuf[64];
+ char *name_to_use;
if ((autof&7) == 3 || (autof&7) == 5)
usepart = 0;
- n = ra->name;
- if (*n == 'd')
- n++;
- if (*n) {
- devnum = strtoul(n, &n, 10);
- if (devnum >= 0 && (*n == 0 || *n == ' ')) {
- /* Use this devnum */
- usepart = (ra->name[0] == 'd');
- if (mddev_busy(usepart ? (-1-devnum) : devnum))
+ mp = map_by_uuid(&map, ra->uuid);
+
+ name_to_use = ra->name;
+ if (! name_to_use ||
+ ! *name_to_use ||
+ (*devname != '/' || strncmp("UUID-", strrchr(devname,'/')+1,5) == 0)
+ )
+ name_to_use = fname_from_uuid(st, ra, nbuf);
+
+ if (mp)
+ devnum = mp->devnum;
+ else {
+
+ n = name_to_use;
+ if (*n == 'd')
+ n++;
+ if (*n && devnum < 0) {
+ devnum = strtoul(n, &n, 10);
+ if (devnum >= 0 && (*n == 0 || *n == ' ')) {
+ /* Use this devnum */
+ usepart = (name_to_use[0] == 'd');
+ if (mddev_busy(usepart ? (-1-devnum) : devnum))
+ devnum = -1;
+ } else
devnum = -1;
- } else
- devnum = -1;
- }
+ }
- if (devnum >= 0)
- devnum = usepart ? (-1-devnum) : devnum;
- else
- devnum = find_free_devnum(usepart);
- mdfd = open_mddev_devnum(NULL, devnum, ra->name,
+ if (devnum < 0) {
+ char *nm = name_to_use;
+ char nbuf[1024];
+ struct stat stb;
+ if (strchr(nm, ':'))
+ nm = strchr(nm, ':')+1;
+ sprintf(nbuf, "/dev/md/%s", nm);
+
+ if (stat(nbuf, &stb) == 0 &&
+ S_ISBLK(stb.st_mode) &&
+ major(stb.st_rdev) == (usepart ?
+ get_mdp_major() : MD_MAJOR)){
+ if (usepart)
+ devnum = minor(stb.st_rdev)
+ >> MdpMinorShift;
+ else
+ devnum = minor(stb.st_rdev);
+ if (mddev_busy(usepart ? (-1-devnum) : devnum))
+ devnum = -1;
+ }
+ }
+
+ if (devnum >= 0)
+ devnum = usepart ? (-1-devnum) : devnum;
+ else
+ devnum = find_free_devnum(usepart);
+ }
+ mdfd = open_mddev_devnum(mp ? mp->path : NULL, devnum, name_to_use,
chosen_name, autof>>3);
if (mdfd < 0) {
return 2;
}
- sra = sysfs_read(mdfd, 0, 0);
-
- sysfs_set_array(sra, ra);
- for (dev = ra->devs; dev; dev = dev->next) {
- char buf[20];
- int dfd;
- sprintf(buf, "%d:%d", dev->disk.major, dev->disk.minor);
- dfd = dev_open(buf, O_RDONLY);
- if (sysfs_add_disk(sra, dfd, dev) == 0)
+ sysfs_init(ra, mdfd, 0);
+ sysfs_set_array(ra, md_get_version(mdfd));
+ for (dev = ra->devs; dev; dev = dev->next)
+ if (sysfs_add_disk(ra, dev) == 0)
working++;
- }
- if (runstop > 0 || working >= ra->array.working_disks) {
+ else if (errno == EEXIST)
+ preexist++;
+ if (working == 0)
+ /* Nothing new, don't try to start */ ;
+ else if (runstop > 0 ||
+ (working + preexist) >= ra->array.working_disks) {
switch(ra->array.level) {
case LEVEL_LINEAR:
case LEVEL_MULTIPATH:
case 0:
- sysfs_set_str(sra, NULL, "array_state",
+ sysfs_set_str(ra, NULL, "array_state",
"active");
break;
default:
- sysfs_set_str(sra, NULL, "array_state",
+ sysfs_set_str(ra, NULL, "array_state",
"readonly");
+ /* start mdmon if needed. */
+ if (!mdmon_running(st->container_dev))
+ start_mdmon(st->container_dev);
+ ping_monitor(devnum2devname(st->container_dev));
break;
}
- if (verbose >= 0)
- printf("Started %s with %d devices\n",
- chosen_name, working);
+ sysfs_set_safemode(ra, ra->safe_mode_delay);
+ if (verbose >= 0) {
+ fprintf(stderr, Name
+ ": Started %s with %d devices",
+ chosen_name, working + preexist);
+ if (preexist)
+ fprintf(stderr, " (%d new)", working);
+ fprintf(stderr, "\n");
+ }
+ /* FIXME should have an O_EXCL and wait for read-auto */
} else
if (verbose >= 0)
- printf("%s assembled with %d devices but "
- "not started\n",
- chosen_name, working);
+ fprintf(stderr, Name
+ ": %s assembled with %d devices but "
+ "not started\n",
+ chosen_name, working);
close(mdfd);
+ map_update(&map, devnum,
+ ra->text_version,
+ ra->uuid, chosen_name);
}
return 0;
}
projects / thirdparty / mdadm.git / blobdiff