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loader: can not read zfs pool with slog removed

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The vdev_init() does check for "known" vdev types, the [log] device removal will create "hole"
device, but vdev_init() does not allow it.

Obtained from: illumos
MFC after:	1 week
This commit is contained in:
Toomas Soome 2020-06-26 21:21:35 +00:00
parent 4cee4598e7
commit b93b14dc75
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=362663
1 changed files with 12 additions and 2 deletions
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14
stand/libsa/zfs/zfsimpl.c
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@ -765,6 +765,13 @@ vdev_disk_read(vdev_t *vdev, const blkptr_t *bp, void *buf,
offset + VDEV_LABEL_START_SIZE, bytes));
}
static int
vdev_missing_read(vdev_t *vdev __unused, const blkptr_t *bp __unused,
void *buf __unused, off_t offset __unused, size_t bytes __unused)
{
return (ENOTSUP);
}
static int
vdev_mirror_read(vdev_t *vdev, const blkptr_t *bp, void *buf,
@ -904,9 +911,10 @@ vdev_init(uint64_t guid, const nvlist_t *nvlist, vdev_t **vdevp)
#endif
memcmp(type, VDEV_TYPE_RAIDZ, len) != 0 &&
memcmp(type, VDEV_TYPE_INDIRECT, len) != 0 &&
memcmp(type, VDEV_TYPE_REPLACING, len) != 0) {
memcmp(type, VDEV_TYPE_REPLACING, len) != 0 &&
memcmp(type, VDEV_TYPE_HOLE, len) != 0) {
printf("ZFS: can only boot from disk, mirror, raidz1, "
"raidz2 and raidz3 vdevs\n");
"raidz2 and raidz3 vdevs, got: %.*s\n", len, type);
return (EIO);
}
@ -937,6 +945,8 @@ vdev_init(uint64_t guid, const nvlist_t *nvlist, vdev_t **vdevp)
DATA_TYPE_UINT64,
NULL, &vic->vic_prev_indirect_vdev, NULL);
}
} else if (memcmp(type, VDEV_TYPE_HOLE, len) == 0) {
vdev = vdev_create(guid, vdev_missing_read);
} else {
vdev = vdev_create(guid, vdev_disk_read);
}