[DRBD-user] drbd storage for Oracle VM

Florian Haas florian at hastexo.com
Tue Apr 3 14:13:04 CEST 2012

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Tue, Apr 3, 2012 at 1:36 PM, Dan Barker <dbarker at visioncomm.net> wrote:
>>> Eduardo, thank you for your input, but Virtual Box (workstation
>>> product) is a completely different animal than Oracle VM (bare-metal
>>> hypervisor). I don't get to choose the underlying storage, and OVM3 choses OCFS2.
>>> I guess I'll simply have to try it out and see if DRBD will compile/run/etc.
>> It will. However OCFS2 will only work on Protocol C (dual-Primary mode requires
>> synchronous replication by definition), so your original plan of using protocol
>> A or B is out.
>> Why do you need to compile though? I thought UEK2 shipped with DRBD.
>> Or has that not been made available for Oracle VM yet?
>> Florian
> That sounds encouraging. Not having to compile will mean I don't have to locate all the dependencies.
> "UEK2 shipped with DRBD." How would I check?

"modinfo drbd; which drbdadm", or yum search drbd.

> I have no need for dual-primary and I can't see how OCFS2 can even tell if the underlying block device is dual-primary or single-primary.

Because the device wouldn't be writable on one of the nodes, which
OCFS2 is sure to choke on?

> I believe Eduardo was using dual-primary. I simply need to do a warm-failover (manual) in the event of a disaster.

Probably need to do OCFS2-on-iSCSI with iSCSI-on-DRBD then.


Need help with High Availability?

More information about the drbd-user mailing list