Open Stack

:-)
Actually I had to remove all my instances running on it (especially the windows ones), yah unfortunately my network backbone wasn't fast enough to support the load induced by GFS - especially the numerous operations performed by the self-healing agents :(

I'm currently considering MooseFS, it has the advantage to have a pretty long list of companies using it in production

take care


Le 24 juil. 2013 à 16:40, Jacob Godin <jacobgodin at gmail.com> a écrit :

> A few things I found were key for I/O performance:
> Make sure your network can sustain the traffic. We are using a 10G backbone with 2 bonded interfaces per node.
> Use high speed drives. SATA will not cut it.
> Look into tuning settings. Razique, thanks for sending these along to me a little while back. A couple that I found were useful:
> KVM cache=writeback (a little risky, but WAY faster)
> Gluster write-behind-window-size (set to 4MB in our setup)
> Gluster cache-size (ideal values in our setup were 96MB-128MB)
> Hope that helps!
> 
> 
> 
> On Wed, Jul 24, 2013 at 11:32 AM, Razique Mahroua <razique.mahroua at gmail.com> wrote:
> I had much performance issues myself with Windows instances, and I/O demanding instances. Make sure it fits your env. first before deploying it in production
> 
> Regards,
> Razique
> 
> Razique Mahroua - Nuage & Co
> razique.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
> 
> <NUAGECO-LOGO-Fblan_petit.jpg>
> 
> Le 24 juil. 2013 à 16:25, Jacob Godin <jacobgodin at gmail.com> a écrit :
> 
>> Hi Denis,
>> 
>> I would take a look into GlusterFS with a distributed, replicated volume. We have been using it for several months now, and it has been stable. Nova will need to have the volume mounted to its instances directory (default /var/lib/nova/instances), and Cinder has direct support for Gluster as of Grizzly I believe.
>> 
>> 
>> 
>> On Wed, Jul 24, 2013 at 11:11 AM, Denis Loshakov <dloshakov at gmail.com> wrote:
>> Hi all,
>> 
>> I have issue with creating shared storage for Openstack. Main idea is to create 100% redundant shared storage from two servers (kind of network RAID from two servers).
>> I have two identical servers with many disks inside. What solution can any one provide for such schema? I need shared storage for running VMs (so live migration can work) and also for cinder-volumes.
>> 
>> One solution is to install Linux on both servers and use DRBD + OCFS2, any comments on this?
>> Also I heard about Quadstor software and it can create network RAID and present it via iSCSI.
>> 
>> Thanks.
>> 
>> P.S. Glance uses swift and is setuped on another servers
>> 
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>> 
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> 
> 

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