On Jul 11, 2025 / 10:19, alan.adamson@xxxxxxxxxx wrote:
>
> On 7/11/25 2:57 AM, Shin'ichiro Kawasaki wrote:
> > From: Alan Adamson <alan.adamson@xxxxxxxxxx>
> >
> > Add a new test (md/002) to verify atomic write support for MD devices
> > (RAID 0, 1, and 10) stacked on top of SCSI devices using scsi_debug with
> > atomic write emulation enabled.
> >
> > This test validates that atomic write sysfs attributes are correctly
> > propagated through MD layers, and that pwritev2() with RWF_ATOMIC
> > behaves as expected on these devices.
> >
> > Specifically, the test checks:
> > - That atomic write attributes in /sys/block/.../queue are consistent
> > between MD and underlying SCSI devices
> > - That atomic write limits are respected in user-space via xfs_io
> > - That statx reports accurate atomic_write_unit_{min,max} values
> > - That invalid writes (too small or too large) fail as expected
> > - That chunk size affects max atomic write limits (for RAID 0/10)
> >
> > Signed-off-by: Alan Adamson <alan.adamson@xxxxxxxxxx>
> > Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>
> > Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx>
> > ---
>
> Looks good.
Thanks for the confirmation. I have applied this patch.
