What are dm-x devices?
Anders Karlsson
anders at trudheim.co.uk
Mon Aug 4 13:45:07 UTC 2008
* Anne Wilson <cannewilson at googlemail.com> [20080804 14:43]:
> What are /dev/dm-0 through to /dev/dm-3? They are listed as block devices,
> and owned root:disk. Looking at gkrellm, dm-0 and dm-2 appear to mirror the
> activity of my system disk, sdb.
Device mapper device-nodes. Look in /dev/mapper/ and you'll see them
again, but with different names.
> Then there are sr0 and sr1 - what are they? Again, I can't see much in the
> way of a clue.
Optical recording devices usually. You have two CD-writers (or
equivalent) attached?
/Anders
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