At the very least, there should be a caveat in the 16.04 upgrade notes to state that any cached lvm volumes should have the caches removed before the upgrade.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lvm2 in Ubuntu. https://bugs.launchpad.net/bugs/1556602 Title: LVM cannot mount LVM Cached Volumes from LMDE Betsy Status in lvm2 package in Ubuntu: Confirmed Bug description: I'm test driving Ubuntu Mate Beta 1 (from USB) on a machine that uses LVM caching. (I use some SSD to cache old hard drives). My LVM setup was created with Linux Mint Debian Edition - Betsy release. The system cannot mount these cached volumes due to the following error reported by 'pvs': ubuntu-mate@ubuntu-mate:~$ sudo pvs LV CacheArchive has invalid cache's feature flag. LV CacheArchive is missing cache policy name. Internal error: LV segments corrupted in CacheArchive. LV CacheArchive has invalid cache's feature flag. LV CacheArchive is missing cache policy name. Internal error: LV segments corrupted in CacheArchive. PV VG Fmt Attr PSize PFree /dev/sda5 vga lvm2 a-- 80.00g 70.00g /dev/sda6 vga lvm2 a-- 160.00g 50.00g /dev/sdb1 vga lvm2 a-- 200.00g 50.00g I did a bit of googling and found a similar report for upgrades from Fedora 21 to Fedora 23. See https://bugzilla.redhat.com/show_bug.cgi?id=1282188. I'll annotate this bug with the LVM version from my existing Debian based configuration in a few minutes. This is a show-stopper for me because I use LVM caching on both of my PCs. It's a great way to marry a 256 GB SSD with a 2 TB hard drive. I keep the OS and some key partitions on the SSD and then use the rest of the SSD to cache the hard drive. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lvm2 2.02.133-1ubuntu7 ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2 Uname: Linux 4.4.0-7-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CasperVersion: 1.367 CurrentDesktop: MATE Date: Sun Mar 13 12:48:41 2016 LiveMediaBuild: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lvm2 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1556602/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp