[Linux-cluster] pvmove with clustered VG

[Johnson, Eric]

Does anyone know what the current status of pvmove is regarding its use
on clustered volume groups in RHEL 5.4? The official RH documentation
for CLVM states the following:

 

"Because the pvmove command uses mirroring, it is not cluster-aware and
needs exclusive access

to a volume. For information on activating logical volumes on individual
nodes in a cluster, see

Section 4.8, "Activating Logical Volumes on Individual Nodes in a
Cluster"."

 

But there are also steps on enabling the cmirror kernel module, which
implies you can use mirroring on a CLVM setup.


Does anyone know if you can do a pvmove on PVs that belong to a
clustered VG? I have 2 RHEL 5.4 clusters (one 64-bit the other 32-bit)
and we need to migrate the data to a new SAN. I'd love to be able to do
this without taking anything offline.

 

Thanks,

Eric

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