Re: Please name new maintainers

>>> On Wed, Dec 5, 2007 at  2:59 AM, in message
<[email protected]>, John Lange
<[email protected]> wrote: 
> On Wed, 2007- 12- 05 at 07:49 +0100, Dirk Heinrichs wrote:
 
>> But, I think I wrote it in an earlier thread: The fact that EVMS is 
>> currently unmaintained doesn't mean it stops working. So as long as it 
>> works fine for you the way it's setup now, there is no reason for you to 
>> switch.
> 
> EVMS does not work reliably the way it is now.
> 
> We have a 4 node cluster sharing the SAN using EVMS and OCFS2 all this
> powered by heartbeat. At the moment only one node can start EVMS at a
> time. The rest do not display the devices in /dev/evms and therefore can
> not mount the drives or participate in the cluster.

Only one node can start an EVMS engine at a time - i.e. the GUI - which
is IBM's design for cluster awareness. That engine coordinates with daemons
on other nodes to synchronize their view of shared storage. All devnodes
show up on all nodes, unless you are using private cluster containers which
are designed to hide the devnodes on all cluster nodes except the one that
has it active. Shared cluster containers are intended for e.g. cluster file
systems, that by design expect to be able to access shared devnodes over
all nodes for parallel access to storage. If you don't use the cluster container
then the devnodes are visible on all nodes...

> evms has been a headache from the start and we deeply regret using it (I
> blame Novell who recommended it in a whitepaper). Even if it was being
> maintained I'd urge others to steer clear of it.

We have lots of customers using it successfully - do you have a support 
agreement?

Hth,
Robert


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