On 11/30/22 10:56 AM, Jan Kara wrote:
> Since commit 10c70d95c0f2 ("block: remove the bd_openers checks in
> blk_drop_partitions") we allow rereading of partition table although
> there are users of the block device. This has an undesirable consequence
> that e.g. if sda and sdb are assembled to a RAID1 device md0 with
> partitions, BLKRRPART ioctl on sda will rescan partition table and
> create sda1 device. This partition device under a raid device confuses
> some programs (such as libstorage-ng used for initial partitioning for
> distribution installation) leading to failures.
>
> Fix the problem refusing to rescan partitions if there is another user
> that has the block device exclusively open.
This looks nice and clean to me. Was pondering whether to queue this up
for 6.1, but it's old enough that I think we should just funnel it through
6.2 and mark it stable.
--
Jens Axboe
