[dm-devel] Re: [RFC][PATCH] dm-cache: block level disk cache target for device mapper

Heinz Mauelshagen mauelshagen at redhat.com
Mon Dec 11 22:31:32 UTC 2006


Hrm,

I finally got onto one of my TODO items a while ago which is an
HSM (IOW: cache) target for device-mapper ;)
The design of my HSM target covers remote storage as well as arbitrary
slow local storage hierachies.

Let's compare our code and see if there's any mutual stuff to merge
or pros and cons of the different approaches when I post something shortly.

Heinz

On Mon, Dec 11, 2006 at 12:54:33PM -0600, Eric Van Hensbergen wrote:
> On 11/27/06, Eric Van Hensbergen <ericvh at hera.kernel.org> wrote:
> >This is the first cut of a device-mapper target which provides a write-back
> >or write-through block cache.  It is intended to be used in conjunction 
> >with
> >remote block devices such as iSCSI or ATA-over-Ethernet, particularly in
> >cluster situations.
> >
> 
> The technical paper describing our motivations and some performance
> results has finally made it through IBM's clearance process.  It is
> available here:
> 
> http://domino.research.ibm.com/library/cyberdig.nsf/1e4115aea78b6e7c85256b360066f0d4/ba52bef8b940e7438525723c006bafea?OpenDocument
> 
>               -eric
> 
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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Storage Development                               56242 Marienrachdorf
                                                  Germany
Mauelshagen at RedHat.com                            PHONE +49  171 7803392
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