[Ocfs2-users] lvm2 not cluster aware - okay, so how should I
stripe my LUNs?
Fabio Corazza
fabio at newbay.com
Wed Oct 4 16:32:23 PDT 2006
Humpherys Philip D Contr 532 CMMXS/CL wrote:
> Hi, I'm testing ocfs2 in a 2-node ocfs2 cluster. I have 12 SAN LUNs
> that I'd like to stripe and mount up as an ocfs2 filesystem. I've been
> told that because LVM2 is not cluster aware, that it can't be used. I'm
> trying to make mdadm work. (using EMC powerpath for multipath). I can
> create an md raid0 device on one node using the /dev/emcpowerxx
> pseudo-devices, and on the other node the md device is there, but it has
> scanned for the devices, and it shows the /dev/sd* devices, not the
> pseudo-devices that really need to be used for multi-path.
>
>
>
> Does anyone know how to make the other node only use the pseudo-devices
> for multi-path. And what is recommended for RAID in ocfs2?
I don't know about RAID0 striping over emcpower* devices, but you can
use EVMS clustered within Heartbeat 2.x to stripe LUNs using LVM2
metadata (that's what I do). But this will add additional point of
failures to your system.
Regards,
Fabio
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