Gluster users - Dec 2009 - big IO problem with kvm iamges while ionice doesnt work on shared storage

Hi all ,
We run into a big problem while using gluster(2.0.6) to serve kvm
images and other stuff like mail storage in distrubted mode with only
1 server(we will add more in the future) .

The problem is basicly when say 3 KVM VPS's using intesing IO applications
It doesnt happen all the time but when happen it uses all gluster server IO
and other servers that need access to the mail storage for example freezes .

Normaly on local disk the sulotion is ionice but as i understand it
only work on local block devices and not on network mounts .

Anyone has any idea to overcome this e.g limit IO for clients or
clients applications like kvm images ? this is a real IO problem wich
makes the all storage crowl .

Many thanks ,

Might want to try upgrading to the newest version - the next few  
versions are much more stable.

Liam


On Dec 19, 2009, at 6:00 AM, Ran <smtp.test61 at gmail.com> wrote:
> Hi all ,
> We run into a big problem while using gluster(2.0.6) to serve kvm
> images and other stuff like mail storage in distrubted mode with only
> 1 server(we will add more in the future) .
>
> The problem is basicly when say 3 KVM VPS's using intesing IO  
> applications
> It doesnt happen all the time but when happen it uses all gluster  
> server IO
> and other servers that need access to the mail storage for example  
> freezes .
>
> Normaly on local disk the sulotion is ionice but as i understand it
> only work on local block devices and not on network mounts .
>
> Anyone has any idea to overcome this e.g limit IO for clients or
> clients applications like kvm images ? this is a real IO problem wich
> makes the all storage crowl .
>
> Many thanks ,
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://gluster.org/cgi-bin/mailman/listinfo/gluster-users

Hi Ran,

Can you send client and server configuration files?

regards,
On Sat, Dec 19, 2009 at 6:00 PM, Ran <smtp.test61 at gmail.com> wrote:
> Hi all ,
> We run into a big problem while using gluster(2.0.6) to serve kvm
> images and other stuff like mail storage in distrubted mode with only
> 1 server(we will add more in the future) .
>
> The problem is basicly when say 3 KVM VPS's using intesing IO
applications
> It doesnt happen all the time but when happen it uses all gluster server IO
> and other servers that need access to the mail storage for example freezes
> .
>
> Normaly on local disk the sulotion is ionice but as i understand it
> only work on local block devices and not on network mounts .
>
> Anyone has any idea to overcome this e.g limit IO for clients or
> clients applications like kvm images ? this is a real IO problem wich
> makes the all storage crowl .
>
> Many thanks ,
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
>


-- 
Raghavendra G