[CentOS] what is device dm-2?

Nataraj incoming-centos at rjl.com
Thu Dec 16 01:04:33 UTC 2010


On 12/14/2010 05:31 AM, Kai Schaetzl wrote:
> According to some searches and the LVM documentation on centos.org a 
> "dmsetup ls" should give me more info. But it doesn't list devices with 
> dm- numbers. Only like so:
>
> lv-name       (major, minor)
>
> The minor numbers seem to be the same numbers that I can see as dm- 
> numbers in an iostat. Is this by chance the dm- number, so that minor 2 
> would be dm-2?
>
>
>
> Kai
>
I believe it is anything that uses the device mapper.  It could be an
encrypted volume or an LVM volume.  I'm not sure how to tell what
devices are associated with it.  Maybe try 'dmsetup ls' or see the
dmsetup man page.

Nataraj




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