Re: [PATCH] generic: test Btrfs delalloc accounting overflow

[Eryu Guan <eguan@redhat.com>]

On Tue, Jun 06, 2017 at 05:03:05PM -0700, Omar Sandoval wrote:
> On Sat, Jun 03, 2017 at 12:37:00AM -0700, Christoph Hellwig wrote:
> > This looks like a btrfs-specific test, and not like a generic one
> > to me.
> 
> Nothing about the workload itself is btrfs-specific, we just have the
> extra check at the end. But I don't really care, I can make it a btrfs
> test unless Eryu has already applied it.

What's not very clear to me is that how do we check the accountings for
non-btrfs filesystems, i.e. what would cause a test failure on non-btrfs
filesystems besides an xfs_io write failure? I'd prefer a btrfs-specific
test if there's no good way to do the check. Or if we want to keep it a
generic test, some comments on the non-btrfs case would be good. I'm
fine with either way.

Thanks,
Eryu