Re: thin provisioned LUN support

David Woodhouse
2008-11-07T12:17:45Z

On Fri, 2008-11-07 at 07:14 -0500, Ric Wheeler wrote:
> I think that discard merging would be helpful (especially for devices
> with more reasonable sized unmap chunks).

First we need generic fixes to the elevator code. It already notices
when you submit a request which _precisely_ matches an existing one in
both start and length, and will ensure that they happen in the right
order. But it _doesn't_ cope with requests that just happen to overlap.

It's on my TODO list; fairly near the top.

--
David Woodhouse Open Source Technology Centre
David.Woodhouse@intel.com Intel Corporation