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Author Topic: LVM Snapshots  (Read 6497 times)


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LVM Snapshots
« on: 03 February 2010, 01:04:50 pm »

Hi All,

I'm looking for help with getting LVM snapshots to work.

I have obtained a SheevaPlug (based on Ubuntu 9.04). I have updated all packages (but not the distribution).

I have created a LVM PV, VG and LV on a external storage device. This is fine. However, when I attempt to create snapshots I get this:

Code: [Select]
[email protected]:/mnt/backups# lvcreate --name=today --size=65G --snapshot /dev/external_storage/backups
FATAL: Could not load /lib/modules/ No such file or directory
  /sbin/modprobe failed: 1
  snapshot: Required device-mapper target(s) not detected in your kernel
  Run `lvcreate --help' for more information.

Code: [Select]
[email protected]:/mnt/backups# modprobe dm-snapshot
FATAL: Could not load /lib/modules/ No such file or directory

Any clues?

Many thanks,



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Re: LVM Snapshots
« Reply #1 on: 03 February 2010, 06:41:38 pm »

Alex -

The missing module messages are typical of an original ex-factory plug.

If those messages offer the clue as to the solution, are you considering upgrading the kernel? Kernels are available at and to use them you will have to repartition (to make room for the new kernel) or use an SD-booting solution.

if I were you, I'd do the kernel upgrade and then check to see if the problem persists.

See also
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