Moving away from Andrew's WIPEDISKS script for a second, I have made a simple script containing just
vgdisplay The output from this is null, suggesting that FAI does not see any LVM stuff at this stage, however after it has completed these bits of the disk_config, Executing: wipefs -af /dev/sdb1 Executing: wipefs -af /dev/sda1 Executing: wipefs -af /dev/sdd1 Executing: wipefs -af /dev/sdc1 Executing: mdadm --stop --scan Executing: mdadm --assemble --scan --config=/tmp/fai/mdadm-from-examine.conf Executing: mdadm -W --stop /dev/md0 Executing: mdadm -W --stop /dev/md2 ... the LVM volumes are visible again (I can't grab the ouput of "vgdisplay", but it shows the volume groups). I'm guessing that this shows that the LVM metadata is immune to the wipefs stuff. I have to stop looking at this for the moment, but I'll see if I can pick it up later and report back (unless anyone else has come across this and can report back, of course) Thanks for your help so far guys.. -- --- Jerry Steele Telephone: +44 (0)7492 910225 GPG: 43A3A8C6