pvmove with clustered VG

["Johnson, Eric" <Eric.Johnson@xxxxxxxxxxxxxxxx>]

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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