From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Thornber <thornber@redhat.com>
Subject: Re: kernel BUG at
	drivers/md/persistent-data/dm-btree-remove.c:182!
Date: Tue, 20 Oct 2015 15:35:07 +0100
Message-ID: <20151020143507.GB15948@rh-vpn>
References: <5624B4B8.1030404@siteground.com> <5624B505.6000406@siteground.com>
	<20151019103057.GA14688@rh-vpn> <5624C9CB.7000702@siteground.com>
	<20151019160230.GA23826@redhat.com>
	<CAJFSNy45otk9AtMmcTr+HeM9hgwds7-kgNr12F2k_kEfZZmgtQ@mail.gmail.com>
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To: Nikolay Borisov <n.borisov@siteground.com>
Cc: device-mapper development <dm-devel@redhat.com>, SiteGround Operations <operations@siteground.com>, Mike Snitzer <snitzer@redhat.com>
List-Id: dm-devel.ids

On Tue, Oct 20, 2015 at 03:57:58PM +0300, Nikolay Borisov wrote:
> On Mon, Oct 19, 2015 at 7:02 PM, Mike Snitzer <snitzer@redhat.com> wrote:
> > On Mon, Oct 19 2015 at  6:45am -0400,
> > Nikolay Borisov <n.borisov@siteground.com> wrote:
> >
> >>
> >>
> >> On 10/19/2015 01:30 PM, Joe Thornber wrote:
> >> > On Mon, Oct 19, 2015 at 12:16:53PM +0300, Nikolay Borisov wrote:
> >> >> [Resending as I had typo in the dm-devel's mailing list the first time]
> >> >>
> >> >> Hello,
> >> >>
> >> >> Using kernel 3.12.47 I've hit the aforementioned issue. I'd also like
> >> >> to say that this kernel does include Dennis Yang's patch which
> >> >> supposedly fixes a similar issue
> >> >> (https://www.redhat.com/archives/dm-devel/2015-May/msg00113.html).
> >> >
> >> >
> >> > Did you apply this patch or my corrected patch?
> >> >
> >> > https://www.redhat.com/archives/dm-devel/2015-May/msg00123.html
> >>
> >> I haven't applied anything per-se, rather this stable kernel does
> >> include your corrected patch. So yes, the correct fix for the issue
> >> reported by Dennis is included, yet apparently the same issue is
> >> manifesting again.
> >
> > Are you using metadata snapshots at all?
> 
> I don't think I'm using metadata snapshot, can you be more specific about
> how to check?

Don't worry, you wouldn't get this symptom anyway.