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Re: [dm-devel] [RFC PATCH] block: xfs: dm thin: train XFS to give up on

To: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Subject: Re: [dm-devel] [RFC PATCH] block: xfs: dm thin: train XFS to give up on retrying IO if thinp is out of space
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Fri, 24 Jul 2015 09:05:09 +1000
Cc: device-mapper development <dm-devel@xxxxxxxxxx>, axboe@xxxxxxxxx, Eric Sandeen <sandeen@xxxxxxxxxx>, Mike Snitzer <snitzer@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, hch@xxxxxx, Vivek Goyal <vgoyal@xxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <alpine.LRH.2.02.1507231306160.16526@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
References: <20150720151849.GA2282@xxxxxxxxxx> <20150720223610.GV7943@dastard> <55AE6670.40903@xxxxxxxxxx> <20150721174753.GA8563@xxxxxxxxxx> <20150722000923.GB7943@dastard> <20150722010056.GC7943@dastard> <alpine.LRH.2.02.1507231306160.16526@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
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@xxxxxxxxxxxxx

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