Commit d66b1b39 authored by NeilBrown's avatar NeilBrown

md: don't allow bitmap file to be added to raid0/linear.

An array can only accept a bitmap if it will call bitmap_daemon_work
periodically, which means it needs a thread running.

If there is no thread, don't allow a bitmap to be added.
Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent a8461a61
......@@ -5961,7 +5961,7 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
int err = 0;
if (mddev->pers) {
if (!mddev->pers->quiesce)
if (!mddev->pers->quiesce || !mddev->thread)
return -EBUSY;
if (mddev->recovery || mddev->sync_thread)
return -EBUSY;
......@@ -6263,7 +6263,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
rv = update_raid_disks(mddev, info->raid_disks);
if ((state ^ info->state) & (1<<MD_SB_BITMAP_PRESENT)) {
if (mddev->pers->quiesce == NULL)
if (mddev->pers->quiesce == NULL || mddev->thread == NULL)
return -EINVAL;
if (mddev->recovery || mddev->sync_thread)
return -EBUSY;
......
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