/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2012 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
*/
#include "mdadm.h"
+#include "udev.h"
#include "md_u.h"
#include "md_p.h"
#include <ctype.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+#include <sys/wait.h>
-static int default_layout(struct supertype *st, int level, int verbose)
+static int round_size_and_verify(unsigned long long *size, int chunk)
+{
+ if (*size == 0)
+ return 0;
+ *size &= ~(unsigned long long)(chunk - 1);
+ if (*size == 0) {
+ pr_err("Size cannot be smaller than chunk.\n");
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * default_layout() - Get default layout for level.
+ * @st: metadata requested, could be NULL.
+ * @level: raid level requested.
+ * @verbose: verbose level.
+ *
+ * Try to ask metadata handler first, otherwise use global defaults.
+ *
+ * Return: Layout or &UnSet, return value meaning depends of level used.
+ */
+int default_layout(struct supertype *st, int level, int verbose)
{
int layout = UnSet;
+ mapping_t *layout_map = NULL;
+ char *layout_name = NULL;
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)
- pr_err("layout defaults to n2\n");
- break;
- case 5:
- case 6:
- layout = map_name(r5layout, "default");
- if (verbose > 0)
- pr_err("layout defaults to %s\n", map_num(r5layout, layout));
- break;
- case LEVEL_FAULTY:
- layout = map_name(faultylayout, "default");
+ if (layout != UnSet)
+ return layout;
+
+ switch (level) {
+ default: /* no layout */
+ layout = 0;
+ break;
+ case 0:
+ layout = RAID0_ORIG_LAYOUT;
+ break;
+ case 10:
+ layout = 0x102; /* near=2, far=1 */
+ layout_name = "n2";
+ break;
+ case 5:
+ case 6:
+ layout_map = r5layout;
+ break;
+ case LEVEL_FAULTY:
+ layout_map = faultylayout;
+ break;
+ }
+
+ if (layout_map) {
+ layout = map_name(layout_map, "default");
+ layout_name = map_num_s(layout_map, layout);
+ }
+ if (layout_name && verbose > 0)
+ pr_err("layout defaults to %s\n", layout_name);
+
+ return layout;
+}
+
+static pid_t write_zeroes_fork(int fd, struct shape *s, struct supertype *st,
+ struct mddev_dev *dv)
- if (verbose > 0)
- pr_err("layout defaults to %s\n", map_num(faultylayout, layout));
+{
+ const unsigned long long req_size = 1 << 30;
+ unsigned long long offset_bytes, size_bytes, sz;
+ sigset_t sigset;
+ int ret = 0;
+ pid_t pid;
+
+ size_bytes = KIB_TO_BYTES(s->size);
+
+ /*
+ * If size_bytes is zero, this is a zoned raid array where
+ * each disk is of a different size and uses its full
+ * disk. Thus zero the entire disk.
+ */
+ if (!size_bytes && !get_dev_size(fd, dv->devname, &size_bytes))
+ return -1;
+
+ if (dv->data_offset != INVALID_SECTORS)
+ offset_bytes = SEC_TO_BYTES(dv->data_offset);
+ else
+ offset_bytes = SEC_TO_BYTES(st->data_offset);
+
+ pr_info("zeroing data from %lld to %lld on: %s\n",
+ offset_bytes, size_bytes, dv->devname);
+
+ pid = fork();
+ if (pid < 0) {
+ pr_err("Could not fork to zero disks: %s\n", strerror(errno));
+ return pid;
+ } else if (pid != 0) {
+ return pid;
+ }
+
+ sigemptyset(&sigset);
+ sigaddset(&sigset, SIGINT);
+ sigprocmask(SIG_UNBLOCK, &sigset, NULL);
+
+ while (size_bytes) {
+ /*
+ * Split requests to the kernel into 1GB chunks seeing the
+ * fallocate() call is not interruptible and blocking a
+ * ctrl-c for several minutes is not desirable.
+ *
+ * 1GB is chosen as a compromise: the user may still have
+ * to wait several seconds if they ctrl-c on devices that
+ * zero slowly, but will reduce the number of requests
+ * required and thus the overhead on devices that perform
+ * better.
+ */
+ sz = size_bytes;
+ if (sz >= req_size)
+ sz = req_size;
+
+ if (fallocate(fd, FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE,
+ offset_bytes, sz)) {
+ pr_err("zeroing %s failed: %s\n", dv->devname,
+ strerror(errno));
+ ret = 1;
break;
}
- return layout;
+ offset_bytes += sz;
+ size_bytes -= sz;
+ }
+
+ exit(ret);
+}
+
+static int wait_for_zero_forks(int *zero_pids, int count)
+{
+ int wstatus, ret = 0, i, sfd, wait_count = 0;
+ struct signalfd_siginfo fdsi;
+ bool interrupted = false;
+ sigset_t sigset;
+ ssize_t s;
+
+ for (i = 0; i < count; i++)
+ if (zero_pids[i])
+ wait_count++;
+ if (!wait_count)
+ return 0;
+
+ sigemptyset(&sigset);
+ sigaddset(&sigset, SIGINT);
+ sigaddset(&sigset, SIGCHLD);
+ sigprocmask(SIG_BLOCK, &sigset, NULL);
+
+ sfd = signalfd(-1, &sigset, 0);
+ if (sfd < 0) {
+ pr_err("Unable to create signalfd: %s\n", strerror(errno));
+ return 1;
+ }
+
+ while (1) {
+ s = read(sfd, &fdsi, sizeof(fdsi));
+ if (s != sizeof(fdsi)) {
+ pr_err("Invalid signalfd read: %s\n", strerror(errno));
+ close(sfd);
+ return 1;
+ }
+
+ if (fdsi.ssi_signo == SIGINT) {
+ printf("\n");
+ pr_info("Interrupting zeroing processes, please wait...\n");
+ interrupted = true;
+ } else if (fdsi.ssi_signo == SIGCHLD) {
+ if (!--wait_count)
+ break;
+ }
+ }
+
+ close(sfd);
+
+ for (i = 0; i < count; i++) {
+ if (!zero_pids[i])
+ continue;
+
+ waitpid(zero_pids[i], &wstatus, 0);
+ zero_pids[i] = 0;
+ if (!WIFEXITED(wstatus) || WEXITSTATUS(wstatus))
+ ret = 1;
+ }
+
+ if (interrupted) {
+ pr_err("zeroing interrupted!\n");
+ return 1;
+ }
+
+ if (ret)
+ pr_err("zeroing failed!\n");
+ else
+ pr_info("zeroing finished\n");
+
+ return ret;
+}
+
+static int add_disk_to_super(int mdfd, struct shape *s, struct context *c,
+ struct supertype *st, struct mddev_dev *dv,
+ struct mdinfo *info, int have_container, int major_num,
+ int *zero_pid)
+{
+ dev_t rdev;
+ int fd;
+
+ if (dv->disposition == 'j') {
+ info->disk.raid_disk = MD_DISK_ROLE_JOURNAL;
+ info->disk.state = (1<<MD_DISK_JOURNAL);
+ } else if (info->disk.raid_disk < s->raiddisks) {
+ info->disk.state = (1<<MD_DISK_ACTIVE) |
+ (1<<MD_DISK_SYNC);
+ } else {
+ info->disk.state = 0;
+ }
+
+ if (dv->writemostly == FlagSet) {
+ if (major_num == BITMAP_MAJOR_CLUSTERED) {
+ pr_err("Can not set %s --write-mostly with a clustered bitmap\n",dv->devname);
+ return 1;
+ } else {
+ info->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
+ }
+
+ }
+
+ if (dv->failfast == FlagSet)
+ info->disk.state |= (1<<MD_DISK_FAILFAST);
+
+ if (have_container) {
+ fd = -1;
+ } else {
+ if (st->ss->external && st->container_devnm[0])
+ fd = open(dv->devname, O_RDWR);
+ else
+ fd = open(dv->devname, O_RDWR|O_EXCL);
+
+ if (fd < 0) {
+ pr_err("failed to open %s after earlier success - aborting\n",
+ dv->devname);
+ return 1;
+ }
+ if (!fstat_is_blkdev(fd, dv->devname, &rdev))
+ return 1;
+ info->disk.major = major(rdev);
+ info->disk.minor = minor(rdev);
+ }
+ if (fd >= 0)
+ remove_partitions(fd);
+ if (st->ss->add_to_super(st, &info->disk, fd, dv->devname,
+ dv->data_offset)) {
+ ioctl(mdfd, STOP_ARRAY, NULL);
+ return 1;
+ }
+ st->ss->getinfo_super(st, info, NULL);
+
+ if (fd >= 0 && s->write_zeroes) {
+ *zero_pid = write_zeroes_fork(fd, s, st, dv);
+ if (*zero_pid <= 0) {
+ ioctl(mdfd, STOP_ARRAY, NULL);
+ return 1;
+ }
+ }
+
+ if (have_container && c->verbose > 0)
+ pr_err("Using %s for device %d\n",
+ map_dev(info->disk.major, info->disk.minor, 0),
+ info->disk.number);
+
+ if (!have_container) {
+ /* getinfo_super might have lost these ... */
+ info->disk.major = major(rdev);
+ info->disk.minor = minor(rdev);
+ }
+
+ return 0;
}
-int Create(struct supertype *st, char *mddev,
- char *name, int *uuid,
- int subdevs, struct mddev_dev *devlist,
- struct shape *s,
- struct context *c, unsigned long long data_offset)
+static int update_metadata(int mdfd, struct shape *s, struct supertype *st,
+ struct map_ent **map, struct mdinfo *info,
+ char *chosen_name)
+{
+ 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.
+ */
+ st->ss->getinfo_super(st, &info_new, NULL);
+ if (st->ss->external && !is_container(s->level) &&
+ !same_uuid(info_new.uuid, info->uuid, 0)) {
+ map_update(map, fd2devnm(mdfd),
+ info_new.text_version,
+ info_new.uuid, chosen_name);
+ me = map_by_devnm(map, st->container_devnm);
+ }
+
+ if (st->ss->write_init_super(st)) {
+ st->ss->free_super(st);
+ return 1;
+ }
+
+ /*
+ * Before activating the array, perform extra steps
+ * required to configure the internal write-intent
+ * bitmap.
+ */
+ if (info_new.consistency_policy == CONSISTENCY_POLICY_BITMAP &&
+ st->ss->set_bitmap && st->ss->set_bitmap(st, info)) {
+ st->ss->free_super(st);
+ return 1;
+ }
+
+ /* update parent container uuid */
+ if (me) {
+ char *path = xstrdup(me->path);
+
+ st->ss->getinfo_super(st, &info_new, NULL);
+ map_update(map, st->container_devnm, info_new.text_version,
+ info_new.uuid, path);
+ free(path);
+ }
+
+ flush_metadata_updates(st);
+ st->ss->free_super(st);
+
+ return 0;
+}
+
+static int add_disks(int mdfd, struct mdinfo *info, struct shape *s,
+ struct context *c, struct supertype *st,
+ struct map_ent **map, struct mddev_dev *devlist,
+ int total_slots, int have_container, int insert_point,
+ int major_num, char *chosen_name)
+{
+ struct mddev_dev *moved_disk = NULL;
+ int pass, raid_disk_num, dnum;
+ int zero_pids[total_slots];
+ struct mddev_dev *dv;
+ struct mdinfo *infos;
+ sigset_t sigset, orig_sigset;
+ int ret = 0;
+
+ /*
+ * Block SIGINT so the main thread will always wait for the
+ * zeroing processes when being interrupted. Otherwise the
+ * zeroing processes will finish their work in the background
+ * keeping the disk busy.
+ */
+ sigemptyset(&sigset);
+ sigaddset(&sigset, SIGINT);
+ sigprocmask(SIG_BLOCK, &sigset, &orig_sigset);
+ memset(zero_pids, 0, sizeof(zero_pids));
+
+ infos = xmalloc(sizeof(*infos) * total_slots);
+ enable_fds(total_slots);
+ for (pass = 1; pass <= 2; pass++) {
+ for (dnum = 0, raid_disk_num = 0, dv = devlist; dv;
+ dv = (dv->next) ? (dv->next) : moved_disk, dnum++) {
+ if (dnum >= total_slots)
+ abort();
+ if (dnum == insert_point) {
+ raid_disk_num += 1;
+ moved_disk = dv;
+ continue;
+ }
+ if (strcasecmp(dv->devname, "missing") == 0) {
+ raid_disk_num += 1;
+ continue;
+ }
+ if (have_container)
+ moved_disk = NULL;
+ if (have_container && dnum < total_slots - 1)
+ /* repeatedly use the container */
+ moved_disk = dv;
+
+ switch(pass) {
+ case 1:
+ infos[dnum] = *info;
+ infos[dnum].disk.number = dnum;
+ infos[dnum].disk.raid_disk = raid_disk_num++;
+
+ if (dv->disposition == 'j')
+ raid_disk_num--;
+
+ ret = add_disk_to_super(mdfd, s, c, st, dv,
+ &infos[dnum], have_container,
+ major_num, &zero_pids[dnum]);
+ if (ret)
+ goto out;
+
+ break;
+ case 2:
+ infos[dnum].errors = 0;
+
+ ret = add_disk(mdfd, st, info, &infos[dnum]);
+ if (ret) {
+ pr_err("ADD_NEW_DISK for %s failed: %s\n",
+ dv->devname, strerror(errno));
+ if (errno == EINVAL &&
+ info->array.level == 0) {
+ pr_err("Possibly your kernel doesn't support RAID0 layouts.\n");
+ pr_err("Either upgrade, or use --layout=dangerous\n");
+ }
+ goto out;
+ }
+ break;
+ }
+ if (!have_container &&
+ dv == moved_disk && dnum != insert_point) break;
+ }
+
+ if (pass == 1) {
+ ret = wait_for_zero_forks(zero_pids, total_slots);
+ if (ret)
+ goto out;
+
+ ret = update_metadata(mdfd, s, st, map, info,
+ chosen_name);
+ if (ret)
+ goto out;
+ }
+ }
+
+out:
+ if (ret)
+ wait_for_zero_forks(zero_pids, total_slots);
+ free(infos);
+ sigprocmask(SIG_SETMASK, &orig_sigset, NULL);
+ return ret;
+}
+
+int Create(struct supertype *st, struct mddev_ident *ident, int subdevs,
+ struct mddev_dev *devlist, struct shape *s, struct context *c)
{
/*
* Create a new raid array.
* RUN_ARRAY
*/
int mdfd;
- unsigned long long minsize=0, maxsize=0;
+ unsigned long long minsize = 0, maxsize = 0;
char *mindisc = NULL;
char *maxdisc = NULL;
+ char *name = ident->name;
+ int *uuid = ident->uuid_set == 1 ? ident->uuid : NULL;
int dnum;
struct mddev_dev *dv;
- int fail=0, warn=0;
- struct stat stb;
+ dev_t rdev;
+ int fail = 0, warn = 0;
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;
+ struct mdinfo info;
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;
+ mdu_array_info_t inf;
int major_num = BITMAP_MAJOR_HI;
+ if (s->bitmap_file && strcmp(s->bitmap_file, "clustered") == 0) {
+ major_num = BITMAP_MAJOR_CLUSTERED;
+ if (c->nodes <= 1) {
+ pr_err("At least 2 nodes are needed for cluster-md\n");
+ return 1;
+ }
+ }
memset(&info, 0, sizeof(info));
if (s->level == UnSet && st && st->ss->default_geometry)
return 1;
}
if (s->raiddisks < 2 && s->level >= 4) {
- pr_err("at least 2 raid-devices needed for level 4 or 5\n");
+ pr_err("at least 2 raid-devices needed for level %d\n", s->level);
return 1;
}
if (s->level <= 0 && s->sparedisks) {
/* 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) {
+ md_get_array_info(fd, &inf) == 0 && inf.raid_disks == 0) {
/* yep, looks like a container */
if (st) {
rv = st->ss->load_container(st, fd,
close(fd);
}
if (st && st->ss->external && s->sparedisks) {
- pr_err("This metadata type does not support "
- "spare disks at create time\n");
+ pr_err("This metadata type does not support spare disks at create time\n");
return 1;
}
- if (subdevs > s->raiddisks+s->sparedisks) {
+ if (subdevs > s->raiddisks+s->sparedisks+s->journaldisks) {
pr_err("You have listed more devices (%d) than are in the array(%d)!\n", subdevs, s->raiddisks+s->sparedisks);
return 1;
}
- if (!have_container && subdevs < s->raiddisks+s->sparedisks) {
+ if (!have_container && subdevs < s->raiddisks+s->sparedisks+s->journaldisks) {
pr_err("You haven't given enough devices (real or missing) to create this array\n");
return 1;
}
break;
case LEVEL_LINEAR:
/* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */
- if (get_linux_version() < 2006016 && s->chunk == 0) {
- s->chunk = 64;
- if (c->verbose > 0)
- pr_err("chunk size defaults to 64K\n");
- }
break;
case 1:
case LEVEL_FAULTY:
case LEVEL_MULTIPATH:
case LEVEL_CONTAINER:
if (s->chunk) {
- s->chunk = 0;
- if (c->verbose > 0)
- pr_err("chunk size ignored for this level\n");
+ pr_err("specifying chunk size is forbidden for this level\n");
+ return 1;
}
break;
default:
pr_err("unknown level %d\n", s->level);
return 1;
}
+
if (s->size == MAX_SIZE)
/* use '0' to mean 'max' now... */
s->size = 0;
if (s->size && s->chunk && s->chunk != UnSet)
- s->size &= ~(unsigned long long)(s->chunk - 1);
+ if (round_size_and_verify(&s->size, s->chunk))
+ return 1;
+
newsize = s->size * 2;
if (st && ! st->ss->validate_geometry(st, s->level, s->layout, s->raiddisks,
&s->chunk, s->size*2,
- data_offset, NULL,
- &newsize, c->verbose>=0))
+ s->data_offset, NULL,
+ &newsize, s->consistency_policy,
+ c->verbose >= 0))
return 1;
if (s->chunk && s->chunk != UnSet) {
if (do_default_chunk) {
/* default chunk was just set */
if (c->verbose > 0)
- pr_err("chunk size "
- "defaults to %dK\n", s->chunk);
- s->size &= ~(unsigned long long)(s->chunk - 1);
+ pr_err("chunk size defaults to %dK\n", s->chunk);
+ if (round_size_and_verify(&s->size, s->chunk))
+ return 1;
do_default_chunk = 0;
}
}
info.array.active_disks = 0;
info.array.working_disks = 0;
dnum = 0;
+ for (dv = devlist; dv; dv = dv->next)
+ if (s->data_offset == VARIABLE_OFFSET)
+ dv->data_offset = INVALID_SECTORS;
+ else
+ dv->data_offset = s->data_offset;
+
for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) {
char *dname = dv->devname;
unsigned long long freesize;
int dfd;
char *doff;
- if (strcasecmp(dname, "missing")==0) {
+ if (strcasecmp(dname, "missing") == 0) {
if (first_missing > dnum)
first_missing = dnum;
if (second_missing > dnum && dnum > first_missing)
missing_disks ++;
continue;
}
- if (data_offset == VARIABLE_OFFSET) {
+ if (s->data_offset == VARIABLE_OFFSET) {
doff = strchr(dname, ':');
if (doff) {
*doff++ = 0;
} else
dv->data_offset = INVALID_SECTORS;
} else
- dv->data_offset = data_offset;
+ dv->data_offset = s->data_offset;
dfd = open(dname, O_RDONLY);
if (dfd < 0) {
dname, strerror(errno));
exit(2);
}
- if (fstat(dfd, &stb) != 0 ||
- (stb.st_mode & S_IFMT) != S_IFBLK) {
+ if (!fstat_is_blkdev(dfd, dname, NULL)) {
close(dfd);
- pr_err("%s is not a block device\n",
- dname);
exit(2);
}
close(dfd);
info.array.working_disks++;
- if (dnum < s->raiddisks)
+ if (dnum < s->raiddisks && dv->disposition != 'j')
info.array.active_disks++;
if (st == NULL) {
struct createinfo *ci = conf_get_create_info();
*/
int i;
char *name = "default";
- for(i=0; !st && superlist[i]; i++) {
+ for(i = 0; !st && superlist[i]; i++) {
st = superlist[i]->match_metadata_desc(name);
if (!st)
continue;
st, s->level, s->layout, s->raiddisks,
&s->chunk, s->size*2,
dv->data_offset, dname,
- &freesize, c->verbose > 0)) {
+ &freesize, s->consistency_policy,
+ c->verbose > 0)) {
case -1: /* Not valid, message printed, and not
* worth checking any further */
exit(2);
dname, strerror(errno));
exit(2);
}
- pr_err("device %s not suitable "
- "for any style of array\n",
+ pr_err("device %s not suitable for any style of array\n",
dname);
exit(2);
}
&s->chunk, s->size*2,
dv->data_offset,
dname, &freesize,
+ s->consistency_policy,
c->verbose >= 0)) {
- pr_err("%s is not suitable for "
- "this array.\n",
+ pr_err("%s is not suitable for this array.\n",
dname);
fail = 1;
continue;
}
}
+ if (dv->disposition == 'j')
+ goto skip_size_check; /* skip write journal for size check */
+
freesize /= 2; /* convert to K */
if (s->chunk && s->chunk != UnSet) {
/* round to chunk size */
if (do_default_chunk) {
/* default chunk was just set */
if (c->verbose > 0)
- pr_err("chunk size "
- "defaults to %dK\n", s->chunk);
- s->size &= ~(unsigned long long)(s->chunk - 1);
+ pr_err("chunk size defaults to %dK\n", s->chunk);
+ if (round_size_and_verify(&s->size, s->chunk))
+ return 1;
do_default_chunk = 0;
}
}
}
if (s->size && freesize < s->size) {
- pr_err("%s is smaller than given size."
- " %lluK < %lluK + metadata\n",
+ pr_err("%s is smaller than given size. %lluK < %lluK + metadata\n",
dname, freesize, s->size);
fail = 1;
continue;
mindisc = dname;
minsize = freesize;
}
+ skip_size_check:
if (c->runstop != 1 || c->verbose >= 0) {
int fd = open(dname, O_RDONLY);
- if (fd <0 ) {
+ if (fd < 0) {
pr_err("Cannot open %s: %s\n",
dname, strerror(errno));
- fail=1;
+ fail = 1;
continue;
}
warn |= check_ext2(fd, dname);
st->minor_version >= 1)
/* metadata at front */
warn |= check_partitions(fd, dname, 0, 0);
- else if (s->level == 1 || s->level == LEVEL_CONTAINER
- || (s->level == 0 && s->raiddisks == 1))
+ else if (s->level == 1 || is_container(s->level) ||
+ (s->level == 0 && s->raiddisks == 1))
/* partitions could be meaningful */
warn |= check_partitions(fd, dname, freesize*2, s->size*2);
else
close(fd);
}
}
+ if (missing_disks == dnum && !have_container) {
+ pr_err("Subdevs can't be all missing\n");
+ return 1;
+ }
if (s->raiddisks + s->sparedisks > st->max_devs) {
- pr_err("Too many devices:"
- " %s metadata only supports %d\n",
+ pr_err("Too many devices: %s metadata only supports %d\n",
st->ss->name, st->max_devs);
return 1;
}
pr_err("no size and no drives given - aborting create.\n");
return 1;
}
- if (s->level > 0 || s->level == LEVEL_MULTIPATH
- || s->level == LEVEL_FAULTY
- || st->ss->external ) {
+ if (s->level > 0 || s->level == LEVEL_MULTIPATH ||
+ s->level == LEVEL_FAULTY || st->ss->external) {
/* size is meaningful */
if (!st->ss->validate_geometry(st, s->level, s->layout,
s->raiddisks,
&s->chunk, minsize*2,
- data_offset,
- NULL, NULL, 0)) {
+ s->data_offset,
+ NULL, NULL,
+ s->consistency_policy, 0)) {
pr_err("devices too large for RAID level %d\n", s->level);
return 1;
}
}
if (!s->bitmap_file &&
+ !st->ss->external &&
s->level >= 1 &&
+ st->ss->add_internal_bitmap &&
+ s->journaldisks == 0 &&
+ (s->consistency_policy != CONSISTENCY_POLICY_RESYNC &&
+ s->consistency_policy != CONSISTENCY_POLICY_PPL) &&
(s->write_behind || s->size > 100*1024*1024ULL)) {
if (c->verbose > 0)
pr_err("automatically enabling write-intent bitmap on large array\n");
if (s->bitmap_file && strcmp(s->bitmap_file, "none") == 0)
s->bitmap_file = NULL;
+ if (s->consistency_policy == CONSISTENCY_POLICY_PPL &&
+ !st->ss->write_init_ppl) {
+ pr_err("%s metadata does not support PPL\n", st->ss->name);
+ return 1;
+ }
+
if (!have_container && s->level > 0 && ((maxsize-s->size)*100 > maxsize)) {
if (c->runstop != 1 || c->verbose >= 0)
pr_err("largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
st->ss->name);
warn = 1;
}
+ st->nodes = c->nodes;
+ st->cluster_name = c->homecluster;
if (warn) {
if (c->runstop!= 1) {
* 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 &&
- s->assume_clean==0 && c->force == 0 && first_missing >= s->raiddisks) {
- switch ( s->level ) {
+ if (st->ss->external == 0 && s->assume_clean == 0 &&
+ c->force == 0 && first_missing >= s->raiddisks) {
+ switch (s->level) {
case 4:
case 5:
insert_point = s->raiddisks-1;
/* We need to create the device */
map_lock(&map);
- mdfd = create_mddev(mddev, name, c->autof, LOCAL, chosen_name);
+ mdfd = create_mddev(ident->devname, ident->name, c->autof, LOCAL, chosen_name, 1);
if (mdfd < 0) {
map_unlock(&map);
return 1;
* it could be in conflict with already existing device
* e.g. container, array
*/
- if (strncmp(chosen_name, "/dev/md/", 8) == 0
- && map_by_name(&map, chosen_name+8) != NULL) {
- pr_err("Array name %s is in use already.\n",
- chosen_name);
+ if (strncmp(chosen_name, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0 &&
+ map_by_name(&map, chosen_name + DEV_MD_DIR_LEN)) {
+ pr_err("Array name %s is in use already.\n", chosen_name);
close(mdfd);
map_unlock(&map);
+ udev_unblock();
return 1;
}
- mddev = chosen_name;
- vers = md_get_version(mdfd);
- if (vers < 9000) {
- pr_err("Create requires md driver version 0.90.0 or later\n");
+ memset(&inf, 0, sizeof(inf));
+ md_get_array_info(mdfd, &inf);
+ if (inf.working_disks != 0) {
+ pr_err("another array by this name is already running.\n");
goto abort_locked;
- } else {
- mdu_array_info_t inf;
- memset(&inf, 0, sizeof(inf));
- ioctl(mdfd, GET_ARRAY_INFO, &inf);
- if (inf.working_disks != 0) {
- pr_err("another array by this name"
- " is already running.\n");
- goto abort_locked;
- }
}
/* Ok, lets try some ioctls */
* 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);
+ if (fstat_is_blkdev(mdfd, chosen_name, &rdev))
+ info.array.md_minor = minor(rdev);
info.array.not_persistent = 0;
- if ( ( (s->level == 4 || s->level == 5) &&
- (insert_point < s->raiddisks || first_missing < s->raiddisks) )
- ||
- ( s->level == 6 && (insert_point < s->raiddisks
- || second_missing < s->raiddisks))
- ||
- ( s->level <= 0 )
- ||
- s->assume_clean
- ) {
+ if (((s->level == 4 || s->level == 5) &&
+ (insert_point < s->raiddisks || first_missing < s->raiddisks)) ||
+ (s->level == 6 && (insert_point < s->raiddisks ||
+ second_missing < s->raiddisks)) ||
+ (s->level <= 0) || s->assume_clean) {
info.array.state = 1; /* clean, but one+ drive will be missing*/
info.resync_start = MaxSector;
} else {
info.array.layout = s->layout;
info.array.chunk_size = s->chunk*1024;
- if (name == NULL || *name == 0) {
- /* base name on mddev */
+ if (*name == 0) {
+ /* base name on devname */
/* /dev/md0 -> 0
* /dev/md_d0 -> d0
* /dev/md_foo -> foo
* /dev/mdhome -> home
*/
/* FIXME compare this with rules in create_mddev */
- name = strrchr(mddev, '/');
+ name = strrchr(chosen_name, '/');
+
if (name) {
name++;
- if (strncmp(name, "md_", 3)==0 &&
- strlen(name) > 3 &&
- (name-mddev) == 5 /* /dev/ */)
+ if (strncmp(name, "md_", 3) == 0 &&
+ strlen(name) > 3 && (name - chosen_name) == 5 /* /dev/ */)
name += 3;
- else if (strncmp(name, "md", 2)==0 &&
- strlen(name) > 2 &&
- isdigit(name[2]) &&
- (name-mddev) == 5 /* /dev/ */)
+ else if (strncmp(name, "md", 2) == 0 &&
+ strlen(name) > 2 && isdigit(name[2]) &&
+ (name - chosen_name) == 5 /* /dev/ */)
name += 2;
}
}
- if (!st->ss->init_super(st, &info.array, s->size, name, c->homehost, uuid,
- data_offset))
+ if (!st->ss->init_super(st, &info.array, s, name, c->homehost, uuid,
+ s->data_offset))
goto abort_locked;
total_slots = info.array.nr_disks;
st->ss->getinfo_super(st, &info, NULL);
- sysfs_init(&info, mdfd, NULL);
+ if (sysfs_init(&info, mdfd, NULL)) {
+ pr_err("unable to initialize sysfs\n");
+ goto abort_locked;
+ }
if (did_default && c->verbose >= 0) {
if (is_subarray(info.text_version)) {
mdi = sysfs_read(-1, devnm, GET_VERSION);
- pr_err("Creating array inside %s container %s\n",
+ pr_info("Creating array inside %s container %s\n",
mdi?mdi->text_version:"managed", devnm);
sysfs_free(mdi);
} else
- pr_err("Defaulting to version"
- " %s metadata\n", info.text_version);
+ pr_info("Defaulting to version %s metadata\n",
+ info.text_version);
}
map_update(&map, fd2devnm(mdfd), info.text_version,
info.uuid, chosen_name);
- map_unlock(&map);
-
- if (s->bitmap_file && vers < 9003) {
- major_num = BITMAP_MAJOR_HOSTENDIAN;
-#ifdef __BIG_ENDIAN
- pr_err("Warning - bitmaps created on this kernel are not portable\n"
- " between different architectured. Consider upgrading the Linux kernel.\n");
-#endif
- }
+ /* Keep map locked until devices have been added to array
+ * to stop another mdadm from finding and using those devices.
+ */
- if (s->bitmap_file && strcmp(s->bitmap_file, "internal")==0) {
- if ((vers%100) < 2) {
- pr_err("internal bitmaps not supported by this kernel.\n");
- goto abort;
- }
+ if (s->bitmap_file && (strcmp(s->bitmap_file, "internal") == 0 ||
+ strcmp(s->bitmap_file, "clustered") == 0)) {
if (!st->ss->add_internal_bitmap) {
pr_err("internal bitmaps not supported with %s metadata\n",
st->ss->name);
- goto abort;
+ goto abort_locked;
}
- if (!st->ss->add_internal_bitmap(st, &s->bitmap_chunk,
- c->delay, s->write_behind,
- bitmapsize, 1, major_num)) {
+ if (st->ss->add_internal_bitmap(st, &s->bitmap_chunk,
+ c->delay, s->write_behind,
+ bitmapsize, 1, major_num)) {
pr_err("Given bitmap chunk size not supported.\n");
- goto abort;
+ goto abort_locked;
}
s->bitmap_file = NULL;
}
- sysfs_init(&info, mdfd, NULL);
+ if (sysfs_init(&info, mdfd, NULL)) {
+ pr_err("unable to initialize sysfs\n");
+ goto abort_locked;
+ }
if (st->ss->external && st->container_devnm[0]) {
/* member */
*/
container_fd = open_dev_excl(st->container_devnm);
if (container_fd < 0) {
- pr_err("Cannot get exclusive "
- "open on container - weird.\n");
- goto abort;
+ pr_err("Cannot get exclusive open on container - weird.\n");
+ goto abort_locked;
}
if (mdmon_running(st->container_devnm)) {
if (c->verbose)
- pr_err("reusing mdmon "
- "for %s.\n",
+ pr_err("reusing mdmon for %s.\n",
st->container_devnm);
st->update_tail = &st->updates;
} else
}
rv = set_array_info(mdfd, st, &info);
if (rv) {
- pr_err("failed to set array info for %s: %s\n",
- mddev, strerror(errno));
- goto abort;
+ pr_err("failed to set array info for %s: %s\n", chosen_name, strerror(errno));
+ goto abort_locked;
}
if (s->bitmap_file) {
c->delay, s->write_behind,
bitmapsize,
major_num)) {
- goto abort;
+ goto abort_locked;
}
bitmap_fd = open(s->bitmap_file, O_RDWR);
if (bitmap_fd < 0) {
- pr_err("weird: %s cannot be openned\n",
+ pr_err("weird: %s cannot be opened\n",
s->bitmap_file);
- goto abort;
+ goto abort_locked;
}
if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
- pr_err("Cannot set bitmap file for %s: %s\n",
- mddev, strerror(errno));
- goto abort;
+ pr_err("Cannot set bitmap file for %s: %s\n", chosen_name, strerror(errno));
+ goto abort_locked;
}
}
- infos = xmalloc(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 < s->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_devnm[0])
- fd = open(dv->devname, O_RDWR);
- else
- fd = open(dv->devname, O_RDWR|O_EXCL);
-
- if (fd < 0) {
- pr_err("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,
- dv->data_offset)) {
- ioctl(mdfd, STOP_ARRAY, NULL);
- goto abort;
- }
- st->ss->getinfo_super(st, inf, NULL);
- safe_mode_delay = inf->safe_mode_delay;
-
- if (have_container && c->verbose > 0)
- pr_err("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);
- }
- break;
- case 2:
- inf->errors = 0;
-
- rv = add_disk(mdfd, st, &info, inf);
-
- if (rv) {
- pr_err("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 && s->level != LEVEL_CONTAINER &&
- !same_uuid(info_new.uuid, info.uuid, 0)) {
- map_update(&map, fd2devnm(mdfd),
- info_new.text_version,
- info_new.uuid, chosen_name);
- me = map_by_devnm(&map, st->container_devnm);
- }
-
- if (st->ss->write_init_super(st)) {
- st->ss->free_super(st);
- goto abort_locked;
- }
-
- /* update parent container uuid */
- if (me) {
- char *path = xstrdup(me->path);
-
- st->ss->getinfo_super(st, &info_new, NULL);
- map_update(&map, st->container_devnm,
- info_new.text_version,
- info_new.uuid, path);
- free(path);
- }
- map_unlock(&map);
+ if (add_disks(mdfd, &info, s, c, st, &map, devlist, total_slots,
+ have_container, insert_point, major_num, chosen_name))
+ goto abort_locked;
- flush_metadata_updates(st);
- st->ss->free_super(st);
- }
- }
- free(infos);
+ map_unlock(&map);
- if (s->level == LEVEL_CONTAINER) {
+ if (is_container(s->level)) {
/* No need to start. But we should signal udev to
* create links */
sysfs_uevent(&info, "change");
if (c->verbose >= 0)
- pr_err("container %s prepared.\n", mddev);
+ pr_err("container %s prepared.\n", chosen_name);
wait_for(chosen_name, mdfd);
} else if (c->runstop == 1 || subdevs >= s->raiddisks) {
if (st->ss->external) {
"readonly");
break;
}
- sysfs_set_safemode(&info, safe_mode_delay);
+ sysfs_set_safemode(&info, info.safe_mode_delay);
if (err) {
- pr_err("failed to"
- " activate array.\n");
+ pr_err("failed to activate array.\n");
ioctl(mdfd, STOP_ARRAY, NULL);
goto abort;
}
if (ioctl(mdfd, RUN_ARRAY, ¶m)) {
pr_err("RUN_ARRAY failed: %s\n",
strerror(errno));
+ if (errno == 524 /* ENOTSUP */ &&
+ info.array.level == 0)
+ cont_err("Please use --layout=original or --layout=alternate\n");
if (info.array.chunk_size & (info.array.chunk_size-1)) {
- cont_err("Problem may be that "
- "chunk size is not a power of 2\n");
+ cont_err("Problem may be that chunk size is not a power of 2\n");
}
ioctl(mdfd, STOP_ARRAY, NULL);
goto abort;
}
+ /* if start_ro module parameter is set, array is
+ * auto-read-only, which is bad as the resync won't
+ * start. So lets make it read-write now.
+ */
+ ioctl(mdfd, RESTART_ARRAY_RW, NULL);
}
if (c->verbose >= 0)
- pr_err("array %s started.\n", mddev);
+ pr_info("array %s started.\n", chosen_name);
if (st->ss->external && st->container_devnm[0]) {
if (need_mdmon)
start_mdmon(st->container_devnm);
} else {
pr_err("not starting array - not enough devices.\n");
}
+ udev_unblock();
close(mdfd);
+ sysfs_uevent(&info, "change");
return 0;
abort:
+ udev_unblock();
map_lock(&map);
abort_locked:
map_remove(&map, fd2devnm(mdfd));
projects / thirdparty / mdadm.git / blobdiff