Extending a shared LV in a Oracle RAC

[Paul Clayton]

I have 25 misconfigured LVMs on an Oracle RAC, that require the LVM to be extended by one extent. The problem we are experiencing in doing this, is that we cannot get the VG into a state were we can extend the volumes.
We shutdown the RAC and the clustering, but cannot do a "vgchange -a y vgrac1". Maybe I am going about this the wrong way.

[Matti_Kurkela]

If it's a cluster volume group, you cannot use "vgchange -a y".

You must instead use "vgchange -a s" (for shared access) or "vgchange -a e" (for exclusive access). With a shared VG, the -x option might be useful too.

For doing LVM extensions, the exclusive access is what you'll want.

When you're done, you can use "vgchange -a n" as normal, to take the system to a default state in preparation for cluster restart.