/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
mdu_array_info_t array;
-
+
if (md_get_version(fd) < 9000) {
fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
return 1;
devname);
return 1;
}
-
+
if (readonly>0) {
if (ioctl(fd, STOP_ARRAY_RO, NULL)) {
fprintf(stderr, Name ": failed to set readonly for %s: %s\n",
return 1;
}
}
- return 0;
+ return 0;
}
-int Manage_runstop(char *devname, int fd, int runstop)
+#ifndef MDASSEMBLE
+
+int Manage_runstop(char *devname, int fd, int runstop, int quiet)
{
/* Run or stop the array. array must already be configured
* required >= 0.90.0
if (runstop == -1 && md_get_version(fd) < 9000) {
if (ioctl(fd, STOP_MD, 0)) {
- fprintf(stderr, Name ": stopping device %s failed: %s\n",
- devname, strerror(errno));
+ if (!quiet) fprintf(stderr, Name ": stopping device %s failed: %s\n",
+ devname, strerror(errno));
return 1;
}
}
-
+
if (md_get_version(fd) < 9000) {
fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
return 1;
devname, strerror(errno));
return 1;
}
+ if (quiet <= 0)
+ fprintf(stderr, Name ": started %s\n", devname);
} else if (runstop < 0){
- if (ioctl(fd, STOP_ARRAY, NULL)) {
- fprintf(stderr, Name ": fail to stop array %s: %s\n",
- devname, strerror(errno));
+ struct map_ent *map = NULL;
+ struct stat stb;
+ struct mdinfo *mdi;
+ /* If this is an mdmon managed array, just write 'inactive'
+ * to the array state and let mdmon clear up.
+ */
+ mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION);
+ if (mdi &&
+ mdi->array.level > 0 &&
+ mdi->text_version[0] == '/') {
+ char *cp;
+
+ /* This is mdmon managed. */
+ close(fd);
+ if (sysfs_set_str(mdi, NULL,
+ "array_state", "inactive") < 0) {
+ if (quiet==0)
+ fprintf(stderr, Name
+ ": fail to stop array %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+
+ /* Give monitor a chance to act */
+ cp = strchr(mdi->text_version+1, '/');
+ if (*cp)
+ *cp = 0;
+ ping_monitor(mdi->text_version+1);
+
+ fd = open(devname, O_RDONLY);
+ }
+ if (mdi)
+ sysfs_free(mdi);
+
+ if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) {
+ if (quiet==0)
+ fprintf(stderr, Name
+ ": fail to stop array %s: %s\n",
+ devname, strerror(errno));
return 1;
}
+
+ if (quiet <= 0)
+ fprintf(stderr, Name ": stopped %s\n", devname);
+ if (fd >= 0 && fstat(fd, &stb) == 0) {
+ int devnum;
+ if (major(stb.st_rdev) == MD_MAJOR)
+ devnum = minor(stb.st_rdev);
+ else
+ devnum = -1-(minor(stb.st_rdev)>>6);
+ map_delete(&map, devnum);
+ map_write(map);
+ map_free(map);
+ }
+ }
+ return 0;
+}
+
+int Manage_resize(char *devname, int fd, long long size, int raid_disks)
+{
+ mdu_array_info_t info;
+ if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
+ fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+ if (size >= 0)
+ info.size = size;
+ if (raid_disks > 0)
+ info.raid_disks = raid_disks;
+ if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
+ fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+ return 0;
+}
+
+int Manage_reconfig(char *devname, int fd, int layout)
+{
+ mdu_array_info_t info;
+ if (ioctl(fd, GET_ARRAY_INFO, &info) != 0) {
+ fprintf(stderr, Name ": Cannot get array information for %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+ info.layout = layout;
+ printf("layout set to %d\n", info.layout);
+ if (ioctl(fd, SET_ARRAY_INFO, &info) != 0) {
+ fprintf(stderr, Name ": Cannot set layout for %s: %s\n",
+ devname, strerror(errno));
+ return 1;
}
return 0;
}
int Manage_subdevs(char *devname, int fd,
- mddev_dev_t devlist)
+ mddev_dev_t devlist, int verbose)
{
/* do something to each dev.
* devmode can be
* try HOT_ADD_DISK
* If that fails EINVAL, try ADD_NEW_DISK
* 'r' - remove the device HOT_REMOVE_DISK
+ * device can be 'faulty' or 'detached' in which case all
+ * matching devices are removed.
* 'f' - set the device faulty SET_DISK_FAULTY
+ * device can be 'detached' in which case any device that
+ * is inaccessible will be marked faulty.
*/
mdu_array_info_t array;
mdu_disk_info_t disc;
- mddev_dev_t dv;
+ unsigned long long array_size;
+ mddev_dev_t dv, next = NULL;
struct stat stb;
- int i,j;
- int save_errno;
- static char buf[4096];
+ int j, jnext = 0;
+ int tfd;
+ struct supertype *st, *tst;
+ int duuid[4];
+ int ouuid[4];
+ int lfd = -1;
if (ioctl(fd, GET_ARRAY_INFO, &array)) {
fprintf(stderr, Name ": cannot get array info for %s\n",
devname);
return 1;
}
- for (dv = devlist ; dv; dv=dv->next) {
- if (stat(dv->devname, &stb)) {
- fprintf(stderr, Name ": cannot find %s: %s\n",
- dv->devname, strerror(errno));
- return 1;
- }
- if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- fprintf(stderr, Name ": %s is not a block device.\n",
- dv->devname);
- return 1;
+
+ /* array.size is only 32 bit and may be truncated.
+ * So read from sysfs if possible, and record number of sectors
+ */
+
+ array_size = get_component_size(fd);
+ if (array_size <= 0)
+ array_size = array.size * 2;
+
+ tst = super_by_fd(fd);
+ if (!tst) {
+ fprintf(stderr, Name ": unsupport array - version %d.%d\n",
+ array.major_version, array.minor_version);
+ return 1;
+ }
+
+ for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
+ unsigned long long ldsize;
+ char dvname[20];
+ char *dnprintable = dv->devname;
+ int err;
+
+ next = dv->next;
+ jnext = 0;
+
+ if (strcmp(dv->devname, "failed")==0 ||
+ strcmp(dv->devname, "faulty")==0) {
+ if (dv->disposition != 'r') {
+ fprintf(stderr, Name ": %s only meaningful "
+ "with -r, not -%c\n",
+ dv->devname, dv->disposition);
+ return 1;
+ }
+ for (; j < array.raid_disks + array.nr_disks ; j++) {
+ disc.number = j;
+ if (ioctl(fd, GET_DISK_INFO, &disc))
+ continue;
+ if (disc.major == 0 && disc.minor == 0)
+ continue;
+ if ((disc.state & 1) == 0) /* faulty */
+ continue;
+ stb.st_rdev = makedev(disc.major, disc.minor);
+ next = dv;
+ jnext = j+1;
+ sprintf(dvname,"%d:%d", disc.major, disc.minor);
+ dnprintable = dvname;
+ break;
+ }
+ if (jnext == 0)
+ continue;
+ } else if (strcmp(dv->devname, "detached") == 0) {
+ if (dv->disposition != 'r' && dv->disposition != 'f') {
+ fprintf(stderr, Name ": %s only meaningful "
+ "with -r of -f, not -%c\n",
+ dv->devname, dv->disposition);
+ return 1;
+ }
+ for (; j < array.raid_disks + array.nr_disks; j++) {
+ int sfd;
+ disc.number = j;
+ if (ioctl(fd, GET_DISK_INFO, &disc))
+ continue;
+ if (disc.major == 0 && disc.minor == 0)
+ continue;
+ sprintf(dvname,"%d:%d", disc.major, disc.minor);
+ sfd = dev_open(dvname, O_RDONLY);
+ if (sfd >= 0) {
+ close(sfd);
+ continue;
+ }
+ if (dv->disposition == 'f' &&
+ (disc.state & 1) == 1) /* already faulty */
+ continue;
+ if (errno != ENXIO)
+ continue;
+ stb.st_rdev = makedev(disc.major, disc.minor);
+ next = dv;
+ jnext = j+1;
+ dnprintable = dvname;
+ break;
+ }
+ if (jnext == 0)
+ continue;
+ } else {
+ j = 0;
+
+ if (stat(dv->devname, &stb)) {
+ fprintf(stderr, Name ": cannot find %s: %s\n",
+ dv->devname, strerror(errno));
+ return 1;
+ }
+ if ((stb.st_mode & S_IFMT) != S_IFBLK) {
+ fprintf(stderr, Name ": %s is not a "
+ "block device.\n",
+ dv->devname);
+ return 1;
+ }
}
switch(dv->disposition){
default:
- fprintf(stderr, Name ": internal error - devmode[%d]=%d\n",
- i, dv->disposition);
+ fprintf(stderr, Name ": internal error - devmode[%s]=%d\n",
+ dv->devname, dv->disposition);
return 1;
case 'a':
- /* add the device - hot or cold */
- if (ioctl(fd, HOT_ADD_DISK, (unsigned long)stb.st_rdev)==0) {
- fprintf(stderr, Name ": hot added %s\n",
- dv->devname);
- continue;
+ /* add the device */
+ if (tst->subarray[0]) {
+ fprintf(stderr, Name ": Cannot add disks to a"
+ " \'member\' array, perform this"
+ " operation on the parent container\n");
+ return 1;
}
- save_errno = errno;
- if (read(fd, buf, sizeof(buf)) > 0) {
- /* array is active, so don't try to add.
- * i.e. something is wrong
- */
+ /* Make sure it isn't in use (in 2.6 or later) */
+ tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT);
+ if (tfd < 0) {
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ dv->devname, strerror(errno));
+ return 1;
+ }
+ remove_partitions(tfd);
+
+ st = dup_super(tst);
+
+ if (array.not_persistent==0)
+ st->ss->load_super(st, tfd, NULL);
+
+ if (!get_dev_size(tfd, dv->devname, &ldsize)) {
+ close(tfd);
+ return 1;
+ }
+ close(tfd);
+
+
+ if (!tst->ss->external &&
+ array.major_version == 0 &&
+ md_get_version(fd)%100 < 2) {
+ if (ioctl(fd, HOT_ADD_DISK,
+ (unsigned long)stb.st_rdev)==0) {
+ if (verbose >= 0)
+ fprintf(stderr, Name ": hot added %s\n",
+ dv->devname);
+ continue;
+ }
+
fprintf(stderr, Name ": hot add failed for %s: %s\n",
- dv->devname, strerror(save_errno));
+ dv->devname, strerror(errno));
return 1;
}
- /* try ADD_NEW_DISK.
- * we might be creating, we might be assembling,
- * it is hard to tell.
- * set up number/raid_disk/state just
- * in case
+
+ if (array.not_persistent == 0) {
+
+ /* Make sure device is large enough */
+ if (tst->ss->avail_size(tst, ldsize/512) <
+ array_size) {
+ fprintf(stderr, Name ": %s not large enough to join array\n",
+ dv->devname);
+ return 1;
+ }
+
+ /* need to find a sample superblock to copy, and
+ * a spare slot to use
+ */
+ for (j = 0; j < tst->max_devs; j++) {
+ char *dev;
+ int dfd;
+ disc.number = j;
+ if (ioctl(fd, GET_DISK_INFO, &disc))
+ continue;
+ if (disc.major==0 && disc.minor==0)
+ continue;
+ if ((disc.state & 4)==0) continue; /* sync */
+ /* Looks like a good device to try */
+ dev = map_dev(disc.major, disc.minor, 1);
+ if (!dev) continue;
+ dfd = dev_open(dev, O_RDONLY);
+ if (dfd < 0) continue;
+ if (tst->ss->load_super(tst, dfd,
+ NULL)) {
+ close(dfd);
+ continue;
+ }
+ close(dfd);
+ break;
+ }
+ if (!tst->sb) {
+ fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
+ return 1;
+ }
+ /* Possibly this device was recently part of the array
+ * and was temporarily removed, and is now being re-added.
+ * If so, we can simply re-add it.
+ */
+ tst->ss->uuid_from_super(tst, duuid);
+
+ /* re-add doesn't work for version-1 superblocks
+ * before 2.6.18 :-(
+ */
+ if (array.major_version == 1 &&
+ get_linux_version() <= 2006018)
+ ;
+ else if (st->sb) {
+ st->ss->uuid_from_super(st, ouuid);
+ if (memcmp(duuid, ouuid, sizeof(ouuid))==0) {
+ /* looks close enough for now. Kernel
+ * will worry about whether a bitmap
+ * based reconstruction is possible.
+ */
+ struct mdinfo mdi;
+ st->ss->getinfo_super(st, &mdi);
+ disc.major = major(stb.st_rdev);
+ disc.minor = minor(stb.st_rdev);
+ disc.number = mdi.disk.number;
+ disc.raid_disk = mdi.disk.raid_disk;
+ disc.state = mdi.disk.state;
+ if (dv->writemostly)
+ disc.state |= 1 << MD_DISK_WRITEMOSTLY;
+ if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) {
+ if (verbose >= 0)
+ fprintf(stderr, Name ": re-added %s\n", dv->devname);
+ continue;
+ }
+ /* fall back on normal-add */
+ }
+ }
+ } else {
+ /* non-persistent. Must ensure that new drive
+ * is at least array.size big.
+ */
+ if (ldsize/512 < array_size) {
+ fprintf(stderr, Name ": %s not large enough to join array\n",
+ dv->devname);
+ return 1;
+ }
+ }
+ /* in 2.6.17 and earlier, version-1 superblocks won't
+ * use the number we write, but will choose a free number.
+ * we must choose the same free number, which requires
+ * starting at 'raid_disks' and counting up
*/
- for (j=0; j<array.nr_disks; j++) {
+ for (j = array.raid_disks; j< tst->max_devs; j++) {
+ disc.number = j;
if (ioctl(fd, GET_DISK_INFO, &disc))
break;
if (disc.major==0 && disc.minor==0)
if (disc.state & 8) /* removed */
break;
}
+ disc.major = major(stb.st_rdev);
+ disc.minor = minor(stb.st_rdev);
disc.number =j;
- disc.raid_disk = j;
disc.state = 0;
- disc.major = MAJOR(stb.st_rdev);
- disc.minor = MINOR(stb.st_rdev);
+ if (array.not_persistent==0) {
+ int dfd;
+ if (dv->writemostly)
+ disc.state |= 1 << MD_DISK_WRITEMOSTLY;
+ dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
+ tst->ss->add_to_super(tst, &disc, dfd,
+ dv->devname);
+ /* write_init_super will close 'dfd' */
+ if (tst->ss->write_init_super(tst))
+ return 1;
+ } else if (dv->re_add) {
+ /* this had better be raid1.
+ * As we are "--re-add"ing we must find a spare slot
+ * to fill.
+ */
+ char *used = malloc(array.raid_disks);
+ memset(used, 0, array.raid_disks);
+ for (j=0; j< tst->max_devs; j++) {
+ mdu_disk_info_t disc2;
+ disc2.number = j;
+ if (ioctl(fd, GET_DISK_INFO, &disc2))
+ continue;
+ if (disc2.major==0 && disc2.minor==0)
+ continue;
+ if (disc2.state & 8) /* removed */
+ continue;
+ if (disc2.raid_disk < 0)
+ continue;
+ if (disc2.raid_disk > array.raid_disks)
+ continue;
+ used[disc2.raid_disk] = 1;
+ }
+ for (j=0 ; j<array.raid_disks; j++)
+ if (!used[j]) {
+ disc.raid_disk = j;
+ disc.state |= (1<<MD_DISK_SYNC);
+ break;
+ }
+ }
+ if (dv->writemostly)
+ disc.state |= (1 << MD_DISK_WRITEMOSTLY);
if (ioctl(fd,ADD_NEW_DISK, &disc)) {
- fprintf(stderr, Name ": add new disk failed for %s: %s\n",
- dv->devname, strerror(errno));
+ fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
+ dv->devname, j, strerror(errno));
return 1;
}
- fprintf(stderr, Name ": added %s\n", dv->devname);
+ if (verbose >= 0)
+ fprintf(stderr, Name ": added %s\n", dv->devname);
break;
case 'r':
/* hot remove */
+ if (tst->subarray[0]) {
+ fprintf(stderr, Name ": Cannot remove disks from a"
+ " \'member\' array, perform this"
+ " operation on the parent container\n");
+ return 1;
+ }
+ if (tst->ss->external) {
+ /* To remove a device from a container, we must
+ * check that it isn't in use in an array.
+ * This involves looking in the 'holders'
+ * directory - there must be just one entry,
+ * the container.
+ * To ensure that it doesn't get used as a
+ * hold spare while we are checking, we
+ * get an O_EXCL open on the container
+ */
+ int dnum = fd2devnum(fd);
+ lfd = open_dev_excl(dnum);
+ if (lfd < 0) {
+ fprintf(stderr, Name
+ ": Cannot get exclusive access "
+ " to container - odd\n");
+ return 1;
+ }
+ if (!sysfs_unique_holder(dnum, stb.st_rdev)) {
+ fprintf(stderr, Name
+ ": %s is %s, cannot remove.\n",
+ dnprintable,
+ errno == EEXIST ? "still in use":
+ "not a member");
+ close(lfd);
+ return 1;
+ }
+ }
/* FIXME check that it is a current member */
- if (ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev)) {
- fprintf(stderr, Name ": hot remove failed for %s: %s\n",
- dv->devname, strerror(errno));
+ err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev);
+ if (err && errno == ENODEV) {
+ /* Old kernels rejected this if no personality
+ * registered */
+ struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS);
+ struct mdinfo *dv = NULL;
+ if (sra)
+ dv = sra->devs;
+ for ( ; dv ; dv=dv->next)
+ if (dv->disk.major == major(stb.st_rdev) &&
+ dv->disk.minor == minor(stb.st_rdev))
+ break;
+ if (dv)
+ err = sysfs_set_str(sra, dv,
+ "state", "remove");
+ else
+ err = -1;
+ if (sra)
+ sysfs_free(sra);
+ }
+ if (err) {
+ fprintf(stderr, Name ": hot remove failed "
+ "for %s: %s\n", dnprintable,
+ strerror(errno));
+ if (lfd >= 0)
+ close(lfd);
return 1;
}
- fprintf(stderr, Name ": hot removed %s\n", dv->devname);
+ close(lfd);
+ if (verbose >= 0)
+ fprintf(stderr, Name ": hot removed %s\n",
+ dnprintable);
break;
case 'f': /* set faulty */
/* FIXME check current member */
if (ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev)) {
- fprintf(stderr, Name ": set disk faulty failed for %s: %s\n",
- dv->devname, strerror(errno));
+ fprintf(stderr, Name ": set device faulty failed for %s: %s\n",
+ dnprintable, strerror(errno));
return 1;
}
- fprintf(stderr, Name ": set %s faulty in %s\n",
- dv->devname, devname);
+ if (verbose >= 0)
+ fprintf(stderr, Name ": set %s faulty in %s\n",
+ dnprintable, devname);
break;
}
}
return 0;
-
+
+}
+
+int autodetect(void)
+{
+ /* Open any md device, and issue the RAID_AUTORUN ioctl */
+ int rv = 1;
+ int fd = dev_open("9:0", O_RDONLY);
+ if (fd >= 0) {
+ if (ioctl(fd, RAID_AUTORUN, 0) == 0)
+ rv = 0;
+ close(fd);
+ }
+ return rv;
}
+#endif
projects / thirdparty / mdadm.git / blobdiff