[dm-devel] device mapper v/s block device driver

[neha naik]

Hi,
  There is no clear documentation available on the net about the scenarios
in which device mapper should be used and why block device driver cannot
work there.

  So, i am posting this question directly to the device mapper community  :
      One can write a block device driver which intercepts io , puts it in
its own biolist, takes action and then passes it to the block device driver
below it.
      (in the form of stackable block device driver) The same can be done
with the help of device mapper target. Then which should be used ?
       Are there any advantages of using block device driver instead of
device mapper (or vice versa)


Regards,
Neha
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/dm-devel/attachments/20130509/a1959ec1/attachment.htm>