[ovirt-users] does SPM can run over ovirt-engine host ?

Moti Asayag masayag at redhat.com
Thu Apr 24 06:27:29 UTC 2014



----- Original Message -----
> From: "Tamer Lima" <tamer.americo at gmail.com>
> To: users at ovirt.org
> Sent: Monday, April 14, 2014 5:13:12 PM
> Subject: [ovirt-users] does SPM can run over ovirt-engine host ?
> 
> 
> Hello,
> 
> When I create virtual machine from a template (centos6.5, 2 cores, 8GB mem,
> 500GB hd) this process takes almost 2 hours. I click on "New VM" button and
> just select the template and click ok.
> 
> engine.log show me high network consumption (98%) between engine-server host
> and SPM host.

Could you share that piece of log which indicates the 98% consumption is beween
the engine server to the SPM host (vs the SPM node to the storage server) ?

> 
> I tried to make my engine-server host a spm host too, but without sucess.
> 
> 
> Does SPM can run over on the same ovirt-engine machine ?
> 
> Am I make something wrong? Or create VM from template is really slow ?
> 
> 
> my servers :
> srv-0202 = ovirt-engine , vdsm
> srv-0203 = spm , vdsm
> srv-0204 = vdsm
> These servers are dell blades connected on a 100GB switch.
> 
> 
> 
> thanks
> 
> 
> 
> 
> This is what I know about SPM:
> http://www.ovirt.org/Storage_-_oVirt_workshop_November_2011
> 
> 
> 
> = Storage Pool Manager (SPM) A role assigned to one host in a data center
> granting it sole authority over:
> 
>     * Creation, deletion, an dmanipulation of virtula disk images, snapshots
>     and templates
>         * Templates: you can create on VM as a golden image and provision to
>         multiple VMs (QCOW layers)
>     * Allocation of storage for sparse block devices (on SAN)
>         * Thin provisinoing (see below)
>     * Single metadata writer:
>         * SPM lease mechanism (Chockler and Malkhi 2004, Light-Weight Leases
>         for Storage-Cnntric Coordination)
>         * Storage-centric mailbox
>     * This role can be migrated to any host in data center
> 
> 
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> 



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