(solved) Re: LVM: How to access a foreign volume group

[Volker Wysk]

Am Sonntag, 10. Dezember 2017, 17:15:31 CET schrieb Volker Wysk:
> You can either use a recovery system without encryption and without LVM, or rename its volume-group name.  You just need to do "cryptsetup open...", and the volume group of the system to be recovered will automatically emerge.
> 
> In case of two encrypted-LVM-volumes, you need to rename the vg name of the recovery system. You should *not* unlock the system-to-be-recovered yet. 
> 
> Xen has made it clear how to rename the volume group:
> 
>    vgrename kubuntu-vg rescue-vg
> 
>    Then you must verify that /etc/fstab in the RESCUE system contains no 
>    references to "kubuntu-vg" and you might also have to rerun 
>    "update-grub" if you want to keep it this way.
> 

I think, I've been happy too soon. The "update-grub" step doesn't work. I get some message "/dev/mapper/kubuntu--vg-root not found". After that, the rescue system is unbootable. (Only a test USB stick affected on my side.)

Volker