using vgextend in service guard environment

[Md. Shafiullah]

Hi all,
I have two boxes clusterd using Service Guard. In the primary node I want to add a physical volume to a volume group and eventually increase a logical volume. The volume group is activated through cluster. If I change the volume group do i need some vgexport to secondary node? or the secondary node does not need to be done anything. My concern is when a package fails over will the VG be properly activated in secondary node?

[IT_2007]

You can add disk online and extend to vg and then extend logical volume on primary node. Once it is done, then take map file and copy it over to secondary node. remove vg from lvmtab using vgexport command and then import using new map file which you copied over.

When package fails over then VG will be activated on secondary node only if you do above procedure.

[Steven E. Protter]

Shalom,

The process is:

vgextend on the active mode.

Do a vgexport -p (preview) to generate a map file on the passive node.

vgimport using that mapfile to update the configuraiton of the passive node.

SEP