[zfs-discuss] ZFS, DRBD, GFS and Clustering

Micky mickylmartin at gmail.com
Wed Oct 16 05:51:28 EDT 2013

On Wed, Oct 16, 2013 at 2:39 PM, Micky <mickylmartin at gmail.com> wrote:
>>GFS needs to be run on
>> shared storage (or DRBD at a push), and thus required RHCS to work.
Right. I understood what you meant. RHCS uses CLVM as cluster aware
filesystem in the examples.

> Yes, but in case of VM/hypervisor clustering, you only need GFS for
> sharing provisioning storage. Rest of the VMs can actually run off
> DRDB, as far as I see from the RHCS documentation since rmanager/cman
> can care of fencing resources and starting VMs after a node failure.
>> Fine of you are running in active-passive mode with only one side mounted at
>> any time. If you plan to have them both mounted, you will destroy the file
>> system instantly - ZFS is not clustering aware.
> Ok, thanks for the heads up. How about only using a zvol block device
> for DRBD and then use rest of the cluster stack on top it? i.e. using
> a pool only for the RAID purposes?

Let me know what do you think about the above though?

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