[dm-devel] RFC: dm-switch target [v2]

Jim_Ramsay at DELL.com Jim_Ramsay at DELL.com
Fri Sep 2 22:56:11 UTC 2011


Pasi Kärkkäinen wrote:
>On Wed, Aug 31, 2011 at 04:19:24PM -0400, Jim Ramsay wrote:
>> We propose a new DM target, dm-switch, which can be used to
>> efficiently implement a mapping of IOs to underlying block devices in
>> scenarios where there are: (1) a large number of address regions, (2)
>> a fixed size of these address regions, (3) no pattern than allows for
>> a compact description with something like the dm-stripe target.
>
> Great, I've been waiting for this module :)

Thanks, it's great to hear the interest!

> Do you guys have some userland tool/script to populate the page
> table in dm-switch, or is there some other way to test this
> (with eql storage) ?

We are planning on providing some sample code, which will
demonstrate how to upload a page table from userland via the
netlink socket.

-- 
Jim Ramsay




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