pvremove could not find the device in my case. It said "Couldn't find device. Check your filters?" with -ff and "Physical Volume /dev/sda5 note found" without -ff. pvck and pvscan were of no use identifying the label, however I knew that I had moved LVM from /dev/sda5 to /dev/sda6 using the alternate installer (similar to comments above).
I found this post below and was able to see the label myself. http://www.redhat.com/archives/linux-lvm/2008-February/msg00011.html dd if=/dev/sda5 bs=1k count=1 | hexdump -e '"%_p"' so there it is. but when I use pvremove -vvvv /dev/sda5 I can see the "Skipping md component device" rule being applied. How do I turn this off?? Interestingly, I have another device that is a raid device, that has LVM on it, and it looks the same, so I get how grub2 is getting confused. The solution was to turn md detection off in /etc/lvm/lvm.conf and re- run the pvremove command. The labels were "successfully wiped". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/452350 Title: Unknown LVM metadata header To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/452350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
