Thank you Joseph and James.
Looks like I did not make things clear. This is not a new disk, it is one
that held the system and all my files before the main board on the machine
failed and was replaced. The new system and files are on a SSD. However,
that is now half full, and I would like to regain access to the original
disk.
James Dutton said:
> LVM has 3 levels.
> 1) Physical Volume. the "pv"
> 2) Volume Ground. the "vg"
> 3) Logical Volume. the "lv"
That is useful - I could guess the meaning of PV and LV, but had no
idea about VG.
> If you have defined some LVM partitions, then the command to use is lvdisplay.
> It will list the available LVs.
That is the problem. For the disk in question, lvdisplay does not give
a LV name, it just says:
WARNING: PV /dev/sde5 in VG debian is using an old PV header, modify
the VG to update.
Your advice gave me sufficient information for a further internet search.
It appears I could try vgck. Is it safe to do that on a mounted filesystem?
The --updatemetadata option would correct the header. However, the SSD is
in the same VG. I do not want to risk damaging the file system there.
Peter Alefounder.
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