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[dm-devel] What is a /dev/dm-* file ?



Hi there,

I have questions about /dev/dm-* in my mind for days, it seems here is the right place for the answers.
What is a /dev/dm-* file?  it says "/dev/dm-0: block special" from file command.
Is there a limitation to the number of /dev/dm-* files ? I tried with RHEL6.1 GA, created 800 from dm-0 to dm-799 as maximum.
Thanks.


Best,
Chao


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