[Cluster-devel] [PATCH RESEND] gfs2: Return more useful errors from gfs2_rgrp_send_discards()

[Andreas Gruenbacher <agruenba@redhat.com>]

On Mon, May 9, 2022 at 12:41 PM Andrew Price <anprice@redhat.com> wrote:
> On 29/04/2022 15:08, Andrew Price wrote:
> > On 19/04/2022 16:49, Andrew Price wrote:
> >> On 05/04/2022 13:08, Andrew Price wrote:
> >>> The bug that 27ca8273f ("gfs2: Make sure FITRIM minlen is rounded up to
> >>> fs block size") fixes was a little confusing as the user saw
> >>> "Input/output error" which masked the -EINVAL that sb_issue_discard()
> >>> returned.
> >>>
> >>> sb_issue_discard() can fail for various reasons, so we should return its
> >>> return value from gfs2_rgrp_send_discards() to avoid all errors being
> >>> reported as IO errors.
> >>>
> >>> This improves error reporting for FITRIM and makes no difference to the
> >>> -o discard code path because the return value from
> >>> gfs2_rgrp_send_discards() gets thrown away in that case (and the option
> >>> switches off). Presumably that's why it was ok to just return -EIO in
> >>> the past, before FITRIM was implemented.
> >>>
> >>> Tested with xfstests.
> >>
> >> Can I get a thumbs-up or thumbs-down for this patch? It's pretty
> >> straightforward. I just don't want it to get forgotten about.
> >>
> >> Cheers,
> >> Andy
> >
> > Please could you take this patch?
> >
> > Cheers,
> > Andy
>
> For convenience, I've pushed this patch to gitlab:
>
>    git fetch https://gitlab.com/andyprice/linux.git discard_errors
>    git show FETCH_HEAD

Pulled, thanks.

Andreas