Open Stack

Hi Jaren,

Very interesting stuff. Thank you!

Joe


On Mon, Apr 22, 2013 at 7:10 PM, Jaren Janke <fractil at gmail.com> wrote:

> Hey Joe...
>
> dedup is off...
>
> I used LZJB compression on my first attempts at using ZFS over NFS for
> openstack, but I did experience problems. I suspect the problems were due
> to delays or overhead caused by compression or compression related
> processes. I did not experiment with gzip compression. I have an 8TB ZFS
> share for each blade enclosure, so storage capacity is not a issue (right
> now anyway). So I disabled compression on my openstack shares. It has been
> working very well. I run a 10G network and I am getting better throughput
> with open-solaris ZFS shares over NFS than I was with an HP EVA over fibre
> channel at a fraction of the cost and maintenance time. The HP guys will
> argue night and day about that, but it's hard to ignore the real world
> results and the cost savings. The only other issue I had was the one I
> mentioned previously regarding NFS version 4, but forcing NFS version 3
> fixed that.
>
> Regards,
>
> Jaren
>
>
>
> On Thu, Apr 18, 2013 at 4:27 PM, Joe Topjian <joe.topjian at cybera.ca>wrote:
>
>> Hi Jaren,
>>
>> I didn't want to hijack the NFS thread, so I started a new one.
>>
>> Are you using deduplication and/or compression with ZFS and your
>> instances? If so, what kind of results are you seeing?
>>
>> For those not at the summit or missed this morning's sessions,
>> Cloudscaling gave a really interesting block storage session. They're using
>> ZFS on Linux (previously OpenSolaris) with their own Cinder driver. They're
>> able to utilize native-ZFS features like snapshotting for volume snapshots
>> and then turn around and send those snapshots to Swift for archiving.
>>
>> They plan on releasing their driver but are not sure when. The main
>> reason is due to their recent switch to Linux and want to ensure the driver
>> is stable.
>>
>> (If anyone else was at the session and the above is not entirely correct,
>> please correct me).
>>
>> Joe
>>
>> --
>> Joe Topjian
>> Systems Administrator
>> Cybera Inc.
>>
>> www.cybera.ca
>>
>> Cybera is a not-for-profit organization that works to spur and support
>> innovation, for the economic benefit of Alberta, through the use
>> of cyberinfrastructure.
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>>
>


-- 
Joe Topjian
Systems Administrator
Cybera Inc.

www.cybera.ca

Cybera is a not-for-profit organization that works to spur and support
innovation, for the economic benefit of Alberta, through the use
of cyberinfrastructure.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20130422/d4df2450/attachment.html>