I understand it is hard to answer my question without knowing my partition structure. Here is some more info:
Code:
# vgscan
Reading all physical volumes. This make take a while...
Found volume group "MACHINENAME" using metadata type lvm2
# lvscan
ACTIVE '/dev/MACHINENAME/root' [461.60 GiB] inherit
ACTIVE '/dev/MACHINENAME/swap_1' [3.87 GiB] inherit
and the root volume is the one that contains /, /usr, /boot and all the others. (So no separate volume for boot, for example).
Also, the menuentry section of grub.cfg for 10_linux contains these lines:
Code:
...
set root='(MACHINENAME-root)'
search --no-floppy --fs-uuid --set=root eb8090d6-e4f6-46b9-9aaa-281cdbd4206f
...
That UUID is exactly the UUID that grub shows me when it fails to boot. It is NOT the same as the UUID for my logical volume though.
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