linux-kernel - Re: [dm-devel] [RFC PATCH] block: xfs: dm thin: train XFS to give up on retrying IO if thinp is out of space

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Date:	Fri, 24 Jul 2015 09:05:09 +1000
From:	Dave Chinner <david@...morbit.com>
To:	Mikulas Patocka <mpatocka@...hat.com>
Cc:	device-mapper development <dm-devel@...hat.com>, axboe@...nel.dk,
	Eric Sandeen <sandeen@...hat.com>,
	Mike Snitzer <snitzer@...hat.com>,
	linux-kernel@...r.kernel.org, xfs@....sgi.com,
	linux-fsdevel@...r.kernel.org, hch@....de,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [dm-devel] [RFC PATCH] block: xfs: dm thin: train XFS to give up
 on retrying IO if thinp is out of space

On Thu, Jul 23, 2015 at 01:08:36PM -0400, Mikulas Patocka wrote:
> On Wed, 22 Jul 2015, Dave Chinner wrote:
> > On Wed, Jul 22, 2015 at 10:09:23AM +1000, Dave Chinner wrote:
> > > On Tue, Jul 21, 2015 at 01:47:53PM -0400, Mike Snitzer wrote:
> > > | $ cat
> > > | /sys/fs/xfs/vda/meta_write_errors/enospc/transient_fail_at_umount
> > > | 1

[...]

> You can just stop retrying the I/Os when the user attempts to unmount the 
> filesystem - then, you don't need any configuration option.

See above - the default will do that, but there are users who do not
want that unmount behaviour....

-Dave.
-- 
Dave Chinner
david@...morbit.com
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