Comment 11 for bug 1014159

I am seeing this as well on one of my production servers with exactly the same symptoms. We added a LVM because we have a database that is continuing to grow and which will eventually reach an unknown as yet size. Since adding the LVM, we obtain the "cannot locate device pv0" each time we run update-grub or update-grub2. The machine otherwise seems to reboot properly and function properly. HOwever, we are planning to do a "do-release-upgrade" on it soon so we'd like to get this resolved before the upgrade to from Precise LTS to Trusty LTS.