[Bug 1556602] Re: LVM cannot mount LVM Cached Volumes from LMDE Betsy

Sun Mar 13 13:13:23 UTC 2016

Here is the package info for LVM2 on LDME Betsy:

dpkg-query -l lvm2
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii  lvm2           2.02.111-2.2 amd64        Linux Logical Volume Manager

aptitude show lvm2
Package: lvm2                            
State: installed
Automatically installed: no
Multi-Arch: foreign
Version: 2.02.111-2.2
Priority: optional
Section: admin
Maintainer: Debian LVM Team <pkg-lvm-maintainers at lists.alioth.debian.org>
Architecture: amd64
Uncompressed Size: 1,663 k
Depends: libc6 (>= 2.15), libdevmapper-event1.02.1 (>= 2:1.02.74),
         libdevmapper1.02.1 (>= 2:1.02.90), libreadline5 (>= 5.2), libudev1 (>=
         183), init-system-helpers (>= 1.18~), lsb-base, dmsetup (> 2:1.02.47),
         dmeventd (> 2:1.02.90), initscripts (>= 2.88dsf-13.3)
Suggests: thin-provisioning-tools
Conflicts: lvm2
Breaks: initramfs-tools (< 0.99), initramfs-tools (< 0.99),
        thin-provisioning-tools (< 0.3.2), thin-provisioning-tools (< 0.3.2)
Provides: lvm2
Provided by: lvm2
Description: Linux Logical Volume Manager
 This is LVM2, the rewrite of The Linux Logical Volume Manager.  LVM supports
 enterprise level volume management of disk and disk subsystems by grouping
 arbitrary disks into volume groups. The total capacity of volume groups can be
 allocated to logical volumes, which are accessed as regular block devices.
Homepage: http://sources.redhat.com/lvm2/

Tags: admin::filesystem, interface::commandline, role::program, scope::utility,
      uitoolkit::ncurses

Hmmm... I wonder whether thin-provisioning-tools was missing on the Ubuntu Xenial install ISO. Here's that package:

aptitude show thin-provisioning-tools
Package: thin-provisioning-tools         
State: installed
Automatically installed: no
Version: 0.3.2-1
Priority: optional
Section: admin
Maintainer: Debian LVM Team <pkg-lvm-maintainers at lists.alioth.debian.org>
Architecture: amd64
Uncompressed Size: 17.1 M
Depends: libc6 (>= 2.14), libexpat1 (>= 2.0.1), libgcc1 (>= 1:4.1.1), libstdc++6
         (>= 4.6)
Conflicts: thin-provisioning-tools
Description: Tools for handling thinly provisioned device-mapper meta-data
 This package contains tools to handle meta-data from the device-mapper thin
 target.  This target allows the use of a single backing store for multple
 thinly provisioned volumes.  Numerous snapshots can be taken from such volumes.
 The tools can check the meta-data for consistency, repair damaged information
 and dump or restore the meta-data in textual form.

I vaguely recall having to manually install that when I set up these LVM cache's.

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Title:
  LVM cannot mount LVM Cached Volumes from LMDE Betsy

Status in lvm2 package in Ubuntu:
  New

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 at 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)

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