[Users] Storage domain weirdness (or design)

[Maor Lipchuk]

Hi Alex,
The storage domains are part of the Data Center, and should not be
related to clusters.
Clusters are used for migrating VMs, which are the qemu processes,
between hosts.
Disks are created on the storage domains regardless to clusters.

The host which write the data in the storage domain to create the disk
is the SPM.
You should have only one SPM in each Data Center (You can spot which
host is your SPM by looking at the SPM column in the hosts tab)
When you create a disk you should be able to choose the storage domain
which you want the disk to be created on.

Regards,
Maor

On 01/17/2013 05:28 PM, Alex Leonhardt wrote:
> Hi,
> 
> I see a strange behaviour -
> 
> 
> Setup:
> 
> 1 ovirtmgmt / ovirt-engine hsot
> 2 ovirt nodes / HVs
> 2 storage domains in same cluster & DC
> 
> HV1 =>  storage domain 1 (master)
> HV2 => storage domain 2
> 
> Issue:
> 
> When I create a host with say ~40GB disk to be on HV2/storage_domain_2,
> it does that via HV1 ? Why is that ? I realize a storage domain is
> "attached to the cluster/dc", however, when creating the VM I explicitly
> seleted to only run on HV2, so why would it still create the disk via
> HV1 ? The mgmt network (for now) is only just that, a mgmt network, not
> meant to create 40 GB disks (dd from /dev/null) over NFS .. it's
> currently only a 100mbit switch
> 
> Question:
> 
> How, if at all, can I make Ovirt create the Disk from the host where
> it's meant to run on ?
1. You can create a new Data Center and separate the host and the
sotrage domain to be used only there.
2. You can move your current SPM host to maintenance which will cause
your other host to become SPM and write the data to the storage domain
it self.

What is the reason you want it to act like this?
> 
> 
> Thanks,
> Alex
> 
> 
> -- 
> 
> | RHCE | Senior Systems Engineer | www.vcore.co <http://www.vcore.co> |
> www.vsearchcloud.com <http://www.vsearchcloud.com> |
> 
> 
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>