[linux-lvm] LVM Merge

[Alasdair G Kergon]

On Sun, May 15, 2016 at 04:35:44AM +0000, Tom Jay wrote:
> I've posted a question to the debian-user mailing list, but am yet to receive a response.
> I am running Debian 7.9 64-bit with kernel version 3.2.0 and would like to use the 'lvconvert --merge' feature, but do not have 'snapshot-merge' support in the kernel. Does anyone have any idea how to enable this?
> The original post is here: https://lists.debian.org/debian-user/2016/05/msg00496.html.
 
So you don't have any snapshot support in your running kernel.
But your kernel is modular, and if you attempt a snapshot operation,
lvm2 will try to load the snapshot module if it is available.

To try this manually, do 'modprobe dm-snapshot' (see 'man modprobe')
then retry 'dmsetup targets'.

Alasdair