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Old 10-09-2008, 08:03 AM   #1
jogo
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Registered: Oct 2008
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[LVM] duplicate VGs


Hi all!

I have cloned a LUN. This LUN has a Linux VM with LVM. The new cloned LUN has been mapped to a server and discovered with iSCSI. I need to mount the filesystem in a Dom0 because is necessary change some files (network).

When I run a vgscan the new VG is found with its own orignal name "vg00". The VG created in Dom0 is called vg00 too and here start the problem:

# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg00" using metadata type lvm2
Found volume group "vg00" using metadata type lvm2

# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 vg00 lvm2 a- 67.62G 33.66G
/dev/sdbc2 vg00 lvm2 a- 7.88G 0

I could change the name of the VG using the UUID but if I do that the VM wont boot because vg00 is not found. Of course the vg00 active (dom0 system) could not be renamed because of its state.

I can't activate the VG (vgchange -ay vg00) because vg00 (Dom0) is already activated.

It is not possible mount /dev/iscsi/xxx/part because is LVM formated

Any idea about how to mount the inactive vg00?

thanks in advance

Last edited by jogo; 10-09-2008 at 08:05 AM.
 
Old 10-09-2008, 08:42 AM   #2
jogo
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Registered: Oct 2008
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solved!

2 days for a stupid solution. vgscan -ay, *without the name of the VGs*, will activate all VGs discovered. ;-)
 
  


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