[Linux-cluster] lvextend error on Redhat-cluster suit 5.1

Jonathan Brassow jbrassow at redhat.com
Tue May 6 15:31:21 UTC 2008

On May 6, 2008, at 8:40 AM, Kumar, T Santhosh (TCS) wrote:

> Linux hostname 2.6.18-53.1.14.el5 #1 SMP Tue Feb 19 07:18:46 EST 2008
> x86_64 x86_64 x86_64 GNU/Linux
> Red Hat Enterprise Linux Server release 5.1 (Tikanga)
> # lvextend -L +4000M /dev/vgec_rde0_pdb/lvol2
> Extending logical volume lvol2 to 63.91 GB
> Error locking on node xxxxxx: Volume group for uuid not found:

This type of message usually implies that the machine can see a  
storage device that is no longer part of a volume group, but has not  
been wiped (pvremove).  This can happen for any number of reasons.   
The admin may have repartitioned something and forgot to wipe the  
PVs... a disk failed and came back... new disks were added that had  
LVM metadata on them... etc.

Certainly try the suggestion about 'partprobe' and restarting  
clvmd...  If that works, great.  Otherwise, you will have to find the  
partition with the stray PV metadata on it - perhaps best done by  
reconciling 'cat /proc/partitions' and 'pvs'.


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