[Gllug] still wondering about lvm

[Ken Smith]

Nix wrote:

>On Tue, 14 Mar 2006, Bruce Richardson uttered the following:
>  
>
>>LVM cares about the UUIDs of the PVs, nothing else.  Two things to note:
>>
>>1. Export the volume group (vgexport) on the original machine before you
>>move them, then vgimport them on the other.
>>
>>2. If you have a volume group of the same name on the other machine,
>>this will cause you problems when you add in the extra disks.  In that
>>scenario, rename the volume group on the disks that will be moved
>>*before* you move them.
>>    
>>
>
>A third note is that if PV that is part of a VG dies, you lose the entire
>VG until you do a vgreduce --removemissing (and that command is somewhat
>risky).
>
>Myself I've got a separate VG covering my robust devices (i.e., RAID)
>and one covering the un-RAIDed stuff I don't much care about (if it dies,
>I lose a bunch of MP3s and have to re-encode them, and a bunch of news
>I have to refetch. Big deal.)
>
>  
>
Yea - and if the original machine won't boot is the VG knackered? In 
other words if i can't do a vgexport on the original is that a total 
terminal situation?

Ken
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