[ClusterLabs] [Slightly OT] OCFS2 over LVM

Digimer lists at alteeve.ca
Sun Aug 23 14:16:27 EDT 2015

On 23/08/15 02:13 PM, Jorge Fábregas wrote:
> Hi,
> I'm still doing some tests on SLES 11 SP4 & I was trying to run
> "mkfs.ocfs2" against a logical volume (with all infrastructure
> ready: cLVM & DLM & o2cb) but it gives me errors while creating it.  If
> I run it against a raw device (no LVM) it works.
> Then I found this from an Oracle PDF:
> "It is important to note that creating OCFS2 volumes on logical volumes
> (LVM) is not supported. This is due to the fact that logical volumes are
> not cluster aware and corruption of the OCFS2 file system may occur."
> Can anyone please confirm if indeed OCFS2 won't work on top of LVM as of
> today?  I found no mention of this in the HAE Guide (strange).
> Thanks!
> Jorge

One, this is on-topic, so don't worry. :)

Two, I've never used ocfs2 (allergic to all things Oracle), but clvmd
makes LVM cluster-aware, as you know. So I have no idea why they'd say

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