Hello, I can confirm to have had a problem similar to the one described here. On initramfs shell, vgchange -ay, ^D, ^D, solved the issue and after booting the system up, I downgraded grub2-common, grub-common, grub-pc and grub-pc-bin all to 2.00-22 and the issue was solved.
Initially I thought it was bug #741652, following the thread on https://lists.debian.org/debian-user/2014/03/msg01313.html. However, I was only able to restore the system following the same manual activation of lvm2 volume groups. Since I do not know if it was an issue with initramfs or grub, I though a notice here could be of some help. -- André N. Batista GNUPG/PGP KEY: 6722CF80
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