[Bug 452350] Re: Unknown LVM metadata header

[Mike Hobbs]

I discovered that the source of my problem was the way I had been
messing around with partitions during install. I had initially let it
configure LVM with default settings. I didn't like the way it put my LVM
partition and the start of the disk and my boot partition at the end of
the disk, so I deleted all the partitions and reconfigured everything
manually. Well, pvcreate puts metadata in certain sectors on the disk
and when I deleted the partitions and recreated the boot partition from
scratch at the beginning of the disk, that metadata was still there, but
now affecting the (non-LVM) boot partition. That stray metadata on my
boot partition was confusing pvscan (and apparently update-grub2 as
well). A simple 'pvremove /dev/sda1' cleared everything up.

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Unknown LVM metadata header
https://bugs.launchpad.net/bugs/452350
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