From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Olivier B." <dm.list@daevel.fr>
Subject: Re: dm-cache module
Date: Sun, 21 Mar 2010 11:35:02 +0100
Message-ID: <4BA5F656.4030108@daevel.fr>
References: <4BA5623F.8040502@daevel.fr> <20100321033704.GA6448@redhat.com>
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On 21/03/2010 04:37, Mike Snitzer wrote:
> Such a DM target would be quite useful to have upstream given how
> prevalent SSDs have become.
>    

I'm totally agree with that.


> Just curious: where have you gotten this insight about dm-cache being
> stable and used in production?  That should help dm-cache's cause if it
> is submitted for review.
>    
Well I wrote to Ming before post here, and found comments about the 
module in the project OpenFiler which seem to integrate it : 
https://forums.openfiler.com/viewtopic.php?id=3595


> Writeback support is arguably the most useful aspect of a caching DM
> target so emphasis must be placed on its review/implementation.  Using
> SSD as a persistent writeback cache should afford us much more fault
> tolerance in the face of system crashes during writeback to the slower
> media.
>    

Yes it's also for the writeback feature I'm interested.

I don't think be enough skilled to help for update the code, but maybe I 
can do some tests.

Thanks,
Olivier