/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2004 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
int nfd, fd2;
int d, nd;
struct supertype *st = NULL;
-
+
if (ioctl(fd, GET_ARRAY_INFO, &info.array) < 0) {
fprintf(stderr, Name ": cannot get array info for %s\n", devname);
fprintf(stderr, Name ": cannot open device file %s\n", dv);
return 1;
}
- if (super) free(super);
+ if (super)
+ st->ss->free_super(st, super);
super= NULL;
if (st->ss->load_super(st, fd2, &super, NULL)) {
fprintf(stderr, Name ": cannot find super block on %s\n", dv);
/* Ok, looks good. Lets update the superblock and write it out to
* newdev.
*/
-
+
info.disk.number = d;
info.disk.major = major(stb.st_rdev);
info.disk.minor = minor(stb.st_rdev);
info.disk.raid_disk = d;
info.disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
- st->ss->update_super(&info, super, "grow", newdev, 0);
+ st->ss->update_super(st, &info, super, "linear-grow-new", newdev,
+ 0, 0, NULL);
if (st->ss->store_super(st, nfd, super)) {
- fprintf(stderr, Name ": Cannot store new superblock on %s\n", newdev);
+ fprintf(stderr, Name ": Cannot store new superblock on %s\n",
+ newdev);
close(nfd);
return 1;
}
info.array.nr_disks = nd+1;
info.array.active_disks = nd+1;
info.array.working_disks = nd+1;
- info.disk.number = nd;
- info.disk.major = major(stb.st_rdev);
- info.disk.minor = minor(stb.st_rdev);
- info.disk.raid_disk = nd;
- info.disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
- st->ss->update_super(&info, super, "grow", dv, 0);
-
+
+ st->ss->update_super(st, &info, super, "linear-grow-update", dv,
+ 0, 0, NULL);
+
if (st->ss->store_super(st, fd2, super)) {
fprintf(stderr, Name ": Cannot store new superblock on %s\n", dv);
close(fd2);
devname);
return 1;
}
+ if (array.level <= 0) {
+ fprintf(stderr, Name ": Bitmaps not meaningful with level %s\n",
+ map_num(pers, array.level)?:"of this array");
+ return 1;
+ }
bitmapsize = array.size;
bitmapsize <<= 1;
-#ifdef BLKGETSIZE64
- if (ioctl(fd, BLKGETSIZE64, &array_size) == 0 &&
+ if (get_dev_size(fd, NULL, &array_size) &&
array_size > (0x7fffffffULL<<9)) {
/* Array is big enough that we cannot trust array.size
* try other approaches
*/
bitmapsize = get_component_size(fd);
}
-#endif
if (bitmapsize == 0) {
fprintf(stderr, Name ": Cannot reliably determine size of array to create bitmap - sorry.\n");
return 1;
if (fd2 < 0)
continue;
if (st->ss->load_super(st, fd2, &super, NULL)==0) {
- if (st->ss->add_internal_bitmap(st, super,
- chunk, delay, write_behind,
- bitmapsize, 0, major))
+ if (st->ss->add_internal_bitmap(
+ st, super,
+ &chunk, delay, write_behind,
+ bitmapsize, 0, major)
+ )
st->ss->write_bitmap(st, fd2, super);
else {
fprintf(stderr, Name ": failed to create internal bitmap - chunksize problem.\n");
if (fd2 >= 0 &&
st->ss->load_super(st, fd2, &super, NULL) == 0) {
close(fd2);
- st->ss->uuid_from_super(uuid, super);
+ st->ss->uuid_from_super(st, uuid, super);
break;
}
close(fd2);
case 6:
st = super_by_version(array.major_version,
array.minor_version);
- /* size can be changed independantly.
+ /* size can be changed independently.
* layout/chunksize/raid_disks/level can be changed
* though the kernel may not support it all.
* If 'suspend_lo' is not present in devfs, then
printf("mdadm: Need to backup %lluK of critical section..\n", last_block/2);
sra = sysfs_read(fd, 0,
- GET_COMPONENT|GET_DEVS|GET_OFFSET|GET_STATE);
+ GET_COMPONENT|GET_DEVS|GET_OFFSET|GET_STATE|
+ GET_CACHE);
if (!sra) {
fprintf(stderr, Name ": %s: Cannot get array details from sysfs\n",
devname);
offsets[sd->role] = sd->offset;
if (fdlist[sd->role] < 0) {
fprintf(stderr, Name ": %s: cannot open component %s\n",
- devname, dn);
+ devname, dn?dn:"-unknown-");
goto abort;
}
} else {
offsets[d] = sd->offset;
if (fdlist[d]<0) {
fprintf(stderr, Name ": %s: cannot open component %s\n",
- devname, dn);
+ devname, dn?dn:"-unknown");
goto abort;
}
d++;
memcpy(bsb.magic, "md_backup_data-1", 16);
- st->ss->uuid_from_super((int*)&bsb.set_uuid, super);
+ st->ss->uuid_from_super(st, (int*)&bsb.set_uuid, super);
bsb.mtime = __cpu_to_le64(time(0));
bsb.arraystart = 0;
bsb.length = __cpu_to_le64(last_block);
array.chunk_size = nchunk;
array.layout = nlayout;
if (ioctl(fd, SET_ARRAY_INFO, &array) != 0) {
+ if (errno == ENOSPC) {
+ /* stripe cache is not big enough.
+ * It needs to be 4 times chunksize_size,
+ * and we assume pagesize is 4K
+ */
+ if (sra->cache_size < 4 * (nchunk/4096)) {
+ sysfs_set_num(sra, NULL,
+ "stripe_cache_size",
+ 4 * (nchunk/4096) +1);
+ if (ioctl(fd, SET_ARRAY_INFO,
+ &array) == 0)
+ goto ok;
+ }
+ }
fprintf(stderr, Name ": Cannot set device size/shape for %s: %s\n",
devname, strerror(errno));
goto abort;
}
+ ok: ;
/* suspend the relevant region */
sysfs_set_num(sra, NULL, "suspend_hi", 0); /* just in case */
break;
sleep(1);
}
-
+
/* invalidate superblocks */
memset(&bsb, 0, sizeof(bsb));
for (i=odisks; i<d ; i++) {
lseek64(fdlist[i], (offsets[i]+last_block)<<9, 0);
- write(fdlist[i], &bsb, sizeof(bsb));
+ if (write(fdlist[i], &bsb, sizeof(bsb)) < 0) {
+ fprintf(stderr, Name ": %s: failed to invalidate metadata for raid disk %d\n",
+ devname, i);
+ }
}
/* unsuspend. */
{
int i, j;
int old_disks;
- int err = 0;
unsigned long long *offsets;
+ unsigned long long nstripe, ostripe, last_block;
+ int ndata, odata;
if (info->delta_disks < 0)
return 1; /* cannot handle a shrink */
if (st->ss->load_super(st, fd, &super, NULL))
continue;
- st->ss->getinfo_super(&dinfo, super);
- free(super); super = NULL;
+ st->ss->getinfo_super(st, &dinfo, super);
+ st->ss->free_super(st, super);
+ super = NULL;
if (lseek64(fd,
(dinfo.data_offset + dinfo.component_size - 8) <<9,
0) < 0)
if (st->ss->load_super(st, fdlist[j], &super, NULL))
/* FIXME should be this be an error */
continue;
- st->ss->getinfo_super(&dinfo, super);
- free(super); super = NULL;
+ st->ss->getinfo_super(st, &dinfo, super);
+ st->ss->free_super(st, super);
+ super = NULL;
offsets[j] = dinfo.data_offset;
}
printf(Name ": restoring critical section\n");
fd, __le64_to_cpu(bsb.devstart)*512,
0, __le64_to_cpu(bsb.length)*512)) {
/* didn't succeed, so giveup */
- return -1;
+ return 1;
}
/* Ok, so the data is restored. Let's update those superblocks. */
if (fdlist[j] < 0) continue;
if (st->ss->load_super(st, fdlist[j], &super, NULL))
continue;
- st->ss->getinfo_super(&dinfo, super);
+ st->ss->getinfo_super(st, &dinfo, super);
dinfo.reshape_progress = __le64_to_cpu(bsb.length);
- st->ss->update_super(&dinfo, super, "_reshape_progress",NULL,0);
+ st->ss->update_super(st, &dinfo, super,
+ "_reshape_progress",
+ NULL,0, 0, NULL);
st->ss->store_super(st, fdlist[j], super);
- free(super);
+ st->ss->free_super(st, super);
}
/* And we are done! */
return 0;
}
- return err;
+ /* Didn't find any backup data, try to see if any
+ * was needed.
+ */
+ nstripe = ostripe = 0;
+ odata = info->array.raid_disks - info->delta_disks - 1;
+ if (info->array.level == 6) odata--; /* number of data disks */
+ ndata = info->array.raid_disks - 1;
+ if (info->new_level == 6) ndata--;
+ last_block = 0;
+ while (nstripe >= ostripe) {
+ nstripe += info->new_chunk / 512;
+ last_block = nstripe * ndata;
+ ostripe = last_block / odata / (info->array.chunk_size/512) *
+ (info->array.chunk_size/512);
+ }
+
+ if (info->reshape_progress >= last_block)
+ return 0;
+ /* needed to recover critical section! */
+ return 1;
}
projects / thirdparty / mdadm.git / blobdiff