[Gluster-users] [Gluster-devel] 3.7.13 & proxmox/qemu

[David Gossage]

On Thu, Jul 21, 2016 at 9:58 AM, David Gossage <dgossage at carouselchecks.com>
wrote:

> On Thu, Jul 21, 2016 at 9:52 AM, Niels de Vos <ndevos at redhat.com> 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 sharding
https://bugzilla.redhat.com/show_bug.cgi?id=1347553

Is it possible to downgrade from 3.8 back to 3.7.x

Building test box right now anyway but wondering.



>
> Thanks with the exception of stat-prefetch I have those enabled
> I 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 = 3
> Transport-type: tcp
> Bricks:
> Brick1: ccgl1.gl.local:/gluster1/BRICK1/1
> Brick2: ccgl2.gl.local:/gluster1/BRICK1/1
> Brick3: ccgl4.gl.local:/gluster1/BRICK1/1
> Options Reconfigured:
> diagnostics.brick-log-level: WARNING
> features.shard-block-size: 64MB
> features.shard: on
> performance.readdir-ahead: on
> storage.owner-uid: 36
> storage.owner-gid: 36
> performance.quick-read: off
> performance.read-ahead: off
> performance.io-cache: off
> performance.stat-prefetch: on
> cluster.eager-lock: enable
> network.remote-dio: enable
> cluster.quorum-type: auto
> cluster.server-quorum-type: server
> server.allow-insecure: on
> cluster.self-heal-window-size: 1024
> cluster.background-self-heal-count: 16
> performance.strict-write-ordering: off
> nfs.disable: on
> nfs.addr-namelookup: off
> nfs.enable-ino32: off
>
>
>> HTH,
>> Niels
>>
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>>
>
>
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