LVM snapshot doesn't seem to work

Gabriel Dragffy;1431108 Wrote: 
> I'm trying the following command:

> $ sudo lvcreate --size 100m --snapshot --name snap
> /dev/bouncyball/root

> 

> and getting the error:

> snapshot: Required device-mapper target(s) not detected
in your
> kernel

> lvcreate: Create a logical volume

> 

> I have tried many other combinations including the -s
and -n switches

> but still no joy, what am I overlooking?

> 

> 

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Have you tried modprobing dm-snapshot module?


-- 
mlind

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On Mon, 2006-08-28 at 09:08 +0100, mlind wrote:

> 
> Have you tried modprobing dm-snapshot module?


Hi, no I haven't. I had no idea I needed to. I kind of
assumed that
since everything else with regards to LVM was working that I
could make
snapshots without loading up another kernel module. How do I
get it to
load automatically... is it in /etc/modules or something?


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