[Ocfs2-users] OCFS2 on top of LVM2?

[Sunil Mushran]

That's why ocfs2 is not certified with lvm2.

Going forward, we will be looking into this issue. But currently
there is no certified solution.

If you are running Oracle db and need volume mgmt, you should look into ASM.

Brian Long wrote:
> On Tue, 2006-04-25 at 13:50 -0700, Zach Brown wrote:
>   
>>> Are there any efforts going into using OCFS2 on top of LVM such that LVM
>>> would stripe or concatenate LUNS and allow me to create a large OCFS2
>>> filesystem?
>>>       
>> You can use OCFS2 on shared logical volumes with straight-forward
>> striping or concatenation, sure.  That kind of static aggregation is a
>> far cry from the kind of active management that ASM can do with its
>> hooks into the database, though.
>>     
>
> Alright, thanks for that info.  However, since RHEL does not include the
> clvm package (it's only part of Red Hat Cluster Suite), can I still use
> shared LVs as part of OCFS2 and be certified?  Or would I have to have
> the cluster-aware clvm installed?
>
> If I have multiple LUNs presented to two or most hosts, I can manage the
> LVM metadata on one host and the other hosts will discover the LVs;
> however, there is no locking in place to make sure I don't try to alter
> the LVM metadata on two nodes at once.  This is typically why groups
> won't certify RHEL4 LVM2 for cluster operations.
>
> I don't want to pay for RHCS or GFS just to get a supported clvm binary
> RPM and stick OCFS2 on top of it  :-)
>
> /Brian/
>
>