[GRLUG] LVM Data Recovery

Thu Oct 22 06:36:08 EDT 2009

On Wed, 2009-10-21 at 19:18 -0400, Jim Olding wrote:
> Software RAID Setup
> /dev/md0 - RAID1 (1TB /dev/sda and /dev/sbd)
> /dev/md1 - RAID5 (1TB total, 500GB each on /dev/sdc, sdd, and sde)
> LVM Setup
> /dev/vg0 - XFS spanned across both md0 & md1
> sdd had gone out, and I just got the replacement in today. When the
> system started up, sde started throwing errors, which deactivated md1
> (because now its missing 2/3 members).  I'm not holding out much hope
> for md1, so I'm wondering if there is some way to bring up the LVM
> group in a 'partial' mode (with just md0), and retrieve any data from
> it.

I'm assuming you ran "vgchange -a y" and got an error?  
Does "pvdisplay --verbose" still show md0?