[Gluster-users] GlusterFS 3.6.1 breaks VM images on cluster node restart

[Andrus, Brian Contractor]

I have similar issues with gluster and am starting to wonder if it really is stable for VM images.

My setup is simple: 1X2=2
I am mirroring a disk, basically.

Trouble has been that the VM images (qcow2 files) go split-brained when one of the VMs gets busier than usual. Once that happens, heal doesn't work often and while it is in such a state, the VM often becomes unresponsive. I've had to pick on of the qcow files from a brick, copy it somewhere, delete the file from gluster and then copy the file from a brick to gluster.

Usually that works, but sometimes I have to run fsck on the image at boot to clean things up.
This is NOT stable, to be sure.

Hopefully it is moot as I recently upgraded to 3.7.1 and we will see how that goes. So far, so good.


Brian Andrus
ITACS/Research Computing
Naval Postgraduate School
Monterey, California
voice: 831-656-6238


-----Original Message-----
From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Justin Clift
Sent: Thursday, June 04, 2015 7:33 AM
To: Roger Lehmann
Cc: gluster-users at gluster.org
Subject: Re: [Gluster-users] GlusterFS 3.6.1 breaks VM images on cluster node restart

On 4 Jun 2015, at 15:08, Roger Lehmann <roger.lehmann at marktjagd.de> wrote:
<snip>
> I couldn't really reproduce this in my test environment with GlusterFS 3.6.2 but I had other problems while testing (may also be because of a virtualized test environment), so I don't want to upgrade to 3.6.2 until I definitely know the problems I encountered are fixed in 3.6.2.
<snip>

Just to point out, version 3.6.3 was released a while ago.  It's effectively 3.6.2 + bug fixes.  Have you looked at testing that? :)

+ Justin

--
GlusterFS - http://www.gluster.org

An open source, distributed file system scaling to several petabytes, and handling thousands of clients.

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