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Date: Fri, 03 Aug 2007 17:46:36 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [linux-lvm] Listing physical volumes in a volume group
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To: LVM general discussion and development <linux-lvm@redhat.com>

Hi,

this will not help for using in script ?
(comma separated list of PVS & PV UUID  in VG)

vgs --separator , --noheadings -o pv_name,pv_uuid <vgname>

Milan
--
mbroz@redhat.com

Steeve McCauley wrote:
> 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
>