Couldn't find all physical volumes for volume group appvg.

[George Magklaras]

Your pvdisplay suggests that this PV is somehow problematic (the PV UUID 
  reported at the beginning matches this one below, so something is 
wrong with either that hard drive or with the lvm metadata). It seems to 
me that the 300 Gig drive is buggered, but at your own risk, the best 
course of action is to do a:

vgdisplay --partial -vvv

This might be able to fish out the PV name for that failed drive. If 
that is the case, go and do a:

pvcreate --restorefile /etc/lvm/backup/appvg \
--uuid Z4xoNI-TSvQ-iNZm-acHi-EPMZ-yJR3-qZUOCT  [insert recovered PV name 
here]

If that is successful, you can attempt to restore the VG by doing a:

vgcfgrestore --file /etc/lvm/backup/appvg appvg

If all goes well and the drive is in a suitable condition, you should 
really see a message like:
"Restore volume group appvg"

Then you can attempt to read the data or PVmove this part to another 
good drive.

GM

-- 
--
George Magklaras

Senior Computer Systems Engineer/UNIX Systems Administrator
EMBnet Technical Management Board
The Biotechnology Centre of Oslo,
University of Oslo
http://folk.uio.no/georgios



unix syzadmin wrote:

>   --- Physical volume ---
>   PV Name               unknown device
>   VG Name               appvg
>   PV Size               300.00 GB / not usable 0
>   Allocatable           yes
>   PE Size (KByte)       4096
>   Total PE              76799
>   Free PE               1
>   Allocated PE          76798
>   PV UUID               Z4xoNI-TSvQ-iNZm-acHi-EPMZ-yJR3-qZUOCT
>