[linux-lvm] "cloning" from ide to sata drive, can't find root

brianmas at highstream.net brianmas at highstream.net
Mon Oct 30 22:36:51 UTC 2006

I did a straight up mirroring of a drive doing dd if=/dev/hda of=/dev/sda where
the src is an ide drive and target a sata drive and not unexpectedly it can't
find the root device on boot.

Typing out the error message ...

Reading all physical volumes this may take a while ...
No volume groups found
Unable to find Volume Group "VolGroup00"

I used a rescue disc distro and used dd to extract info subtible for
after which I did some other finagaling with vgchange and I can mount the volume
and view the data on it, so it's there, vgscan/pvscan and lvscan all show it ...
but as mentioned boot it's just not picked up on boot so it can be mounted as
'/'. I thought I fixed it with the vgcfgrestore (changing /dev/hda2 to
/dev/sda2) but obviously not ... any guidance is appreciated.

thank you,

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