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Date: Fri, 03 Aug 2007 10:19:06 -0400
From: Steeve McCauley <steeve@terrascale.net>
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Subject: [linux-lvm] Listing physical volumes in a volume group
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I would like to know if there is a canonical way to list the
physical volumes in a volume group, specifically to extract
the uuid for those PVs in a bash script.  I am able to do
something along the lines of,

PVS=$(vgdisplay -vv 2>&1 | grep "PV UUID" | awk '{print $3}')
PVUUID=$(pvs -o pv_uuid --noheadings /dev/sdx | awk '{print $1}')

and then look for PVUUID in the list of PVS.

for uuid in $PVS; do
   [ "$uuid" != "$PVUUID" ] && continue
   ...
done

but this relies on the output format of 'vgdisplay -vv' and
I want to be sure that I will always get the expected result.

Thanks,

steeve

-- 
Steeve McCauley
:wq