Bug#691271: lvm2: Losing data when moving LV between regular HD → SSD

Laurent Bigonville bigon at debian.org
Tue Oct 23 18:24:11 UTC 2012

Package: lvm2
Version: 2.02.95-4
Severity: important


I'm not sure if this should be reported against the LVM package or
against the kernel.

Today I've tried to move data[0] between my old HD to my new SSD. I first
set issue_discards = 1 in the /etc/lvm/lvm.conf config file. I then used
pvmove[0] to do the migration.

After the command has succeeded, I tried to mount it again, but it
failed to find a valid filesystem.

I've hopefully been able to find the backups of the old layout and
restore it. I tried again a 2nd time and it gave me the same result.

It worked perfectly when I've reverted the issue_discards setting back to 0.


Laurent Bigonville

[0] pvmove -n home /dev/sdb4 /dev/sda5

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.5-trunk-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_BE.utf8, LC_CTYPE=fr_BE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lvm2 depends on:
ii  dmsetup                   2:1.02.74-4
ii  initscripts               2.88dsf-32
ii  libc6                     2.13-35
ii  libdevmapper-event1.02.1  2:1.02.74-4
ii  libdevmapper1.02.1        2:1.02.74-4
ii  libreadline5              5.2-12
ii  libudev0                  175-7
ii  lsb-base                  4.1+Debian7

lvm2 recommends no packages.

lvm2 suggests no packages.

-- Configuration Files:
/etc/lvm/lvm.conf changed [not included]

-- no debconf information

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