On Thu, Jul 21, 2016 at 12:48 PM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> wrote:
On Thu, Jul 21, 2016 at 9:58 AM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> wrote:On Thu, Jul 21, 2016 at 9:52 AM, Niels de Vos <ndevos@xxxxxxxxxx> wrote:On Sun, Jul 10, 2016 at 10:49:52AM +1000, Lindsay Mathieson wrote:
> Did a quick test this morning - 3.7.13 is now working with libgfapi - yay!
>
>
> However I do have to enable write-back or write-through caching in qemu
> before the vm's will start, I believe this is to do with aio support. Not a
> problem for me.
>
> I see there are settings for storage.linux-aio and storage.bd-aio - not sure
> as to whether they are relevant or which ones to play with.
Both storage.*-aio options are used by the brick processes. Depending on
what type of brick you have (linux = filesystem, bd = LVM Volume Group)
you could enable the one or the other.
We do have a strong suggestion to set these "gluster volume group .."
options:
https://github.com/gluster/glusterfs/blob/master/extras/group-virt.example
>From those options, network.remote-dio seems most related to your aio
theory. It was introduced with http://review.gluster.org/4460 that
contains some more details.Wonder if this may be related at all* #1347553: O_DIRECT support for shardingIs it possible to downgrade from 3.8 back to 3.7.xBuilding test box right now anyway but wondering.
May be anecdotal with small sample size but the few people who have had issue all seemed to have zfs backed gluster volumes.
Now that i recall back to the day I updated. The gluster volume on xfs I use for my hosted engine never had issues.
Thanks with the exception of stat-prefetch I have those enabledI could try turning that back off though at the time of update to 3.7.13 it was off. I didnt turn it back on till later in next week after downgrading back to 3.7.11.Number of Bricks: 1 x 3 = 3Transport-type: tcpBricks:Brick1: ccgl1.gl.local:/gluster1/BRICK1/1Brick2: ccgl2.gl.local:/gluster1/BRICK1/1Brick3: ccgl4.gl.local:/gluster1/BRICK1/1Options Reconfigured:diagnostics.brick-log-level: WARNINGfeatures.shard-block-size: 64MBfeatures.shard: onperformance.readdir-ahead: onstorage.owner-uid: 36storage.owner-gid: 36performance.quick-read: offperformance.read-ahead: offperformance.io-cache: offperformance.stat-prefetch: oncluster.eager-lock: enablenetwork.remote-dio: enablecluster.quorum-type: autocluster.server-quorum-type: serverserver.allow-insecure: oncluster.self-heal-window-size: 1024cluster.background-self-heal-count: 16performance.strict-write-ordering: offnfs.disable: onnfs.addr-namelookup: offnfs.enable-ino32: off
HTH,
Niels
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