[linux-lvm] Thin provisioning on a cluster

[linux-lvm] Thin provisioning on a cluster

[Matthew Anderson]

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Hi all,

I sifted through the mailing list and wasn't able to find if thin provisioning can be used with clustering, is anyone able to confirm?

I found a reference in the RHEL 6.3 beta docs saying thinp snapshots can't be used when clustered so I'm not sure if this affects making thinly provisioned logical volumes. I was hoping to use lvm2 over my KVM cluster (one LV per VM, no shared volumes at all, PV's using SRP) so I'm able to overcommit storage and keep it as close to bare metal as possible. Snapshots aren't important at this stage.

Thanks for your time
-Matt

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Re: [linux-lvm] Thin provisioning on a cluster

[Zdenek Kabelac]

Dne 31.5.2012 07:36, Matthew Anderson napsal(a):
> Hi all,
>
> I sifted through the mailing list and wasn't able to find if thin provisioning can be used with clustering, is anyone able to confirm?

You should be able to active thin pool and thin volume exclusively on one 
node. There is no way to active thin volumes from one pool on different nodes.
Only one node could work with pool data and metadata.
So if you want to activate volume on multiple nodes, thin provisioning will 
not help.

Zdenek