[linux-lvm] VGs gone!

[Rupert Hair]

Quoting David Minor <sus4 at sbcglobal.net>:

<SNIP>
> We had a problem with the
> root partition on the first drive, so we decided to
> restore from the mirror using dd.  After doing this,
> the VGs are not in existence anymore.  running
> 'vgscan' shows it creates /etc/lvmtab and
> /etc/lvmtab.d correctly, but they are empty.  
How were the drives mirrored?  Did you use some sort of raid or was it all done
by using dd to copy the whole drive?

What does pvscan show?

Rupert