Sun Jul 5 12:45:33 CEST 2009

lvm mirror

/dev/hda2       root mirror 1
/dev/hdb1       meta
/dev/hdb2       rood mirror 2

checked using hexdump to see taht the data is indeed physically
present on both disks.

now check if a mirror can be recovered if the meta data partition is
corrupted.  starting with just hdb the disk won't mount.  same for
just hda.  so how to recover?

hmm... from what i can understand it's maybe not such a good idea to
use lvm for raid1.  a very nice feature of md is that the drives by
themselves work normally without md.  and everything just works when
you remove one of the drives with md running.