[Devel] [PATCH hci-8.1 2/3] drivers/md/dm-qcow2: fail writes to a read-only table

[no-reply at sashiko.virtuozzo.com]

> bio_check_ro() only warns about a write to a read-only disk and lets it
> through. dm-qcow2 then allocates clusters in the top image although
> the table is read-only. The header is not updated for a read-only
> table, so enabled persistent bitmaps stay marked consistent while the
> image data changes under them.
> 
> Kill write requests in .clone_and_map when the table is read-only.
> 
> https://virtuozzo.atlassian.net/browse/VSTOR-138887
> Feature: dm-qcow2: block device over QCOW2 files driver
> 
> Signed-off-by: Alexander Ivanov <alexander.ivanov at virtuozzo.com>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.vzint.dev/#/patchset/20261023132008.2304901-1-alexander.ivanov@virtuozzo.com?part=2