dm-cache: new caching method that operates within the Linux kernel

Re:dm-cache: new caching method that operates within the Lin... by sciurus on Wednesday October 10, 2012 @09:52PM (#4639020)

It's not exactly new, development started in 2006.

https://lwn.net/Articles/211246/

dm-cache is the project Facebook's flashcache is based on.

https://github.com/facebook/flashcache

I'm not sure if there's ongoing work to merge dm-cache or flashcache into the upstream linux kernel. With bcache there is.

http://www.redhat.com/archives/dm-devel/2012-July/msg00155.h...

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Re:dm-cache: new caching method that operates within the Lin... by black_kiwi on Thursday October 11, 2012 @06:42AM (#4640261)

Yes, dm-cache is not new, but it just had a major new release. It now has a feature to allow many vms to share one cache.

I can't speak for the flashcache team, but I do know that one goal of the dm-cache team is to get it into the upstream for the linux kernel(I know this b/c I worked with dm-cache team last year).

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Re:dm-cache: new caching method that operates within the Lin... by sciurus on Friday October 12, 2012 @12:36PM (#4645765)

That's great to know! Hopefully one of these projects will make it into the kernel soon, since this is obviously a very useful feature.

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