On Sun, 19 Dec 2010, Luke S Crawford wrote: > > This is a follow up to my previous message about raid cards with > large flash caches. > > Some time ago Facebook released flashcache[1] and a friend of mine > pointed me at another project, bcache[2] which is aimed at more modern > kernels (flashcache works on 2.6.18 and .20, I assume because RHEL5 > uses 2.6.18, and that's very likely what facebook uses. It looks like > the author of bcache is targeting the upstream linux kernel.) > > Now, as far as I can tell, nobody is even trying to get flashcache > upstream, and bcache, well, the posts from Overstreet seem to > indicate that he's working on it and making good headway, but even > if it does get upstreamed, it'll need to be backported to something > that supports a Xen Dom0.
I'm not using it, but I am seeing the linux patches for bcache making progress in getting upstream. David Lang > Of course, switching to a dom0 with ZFS would make this problem > just go away; zfs already has good, solid support for this sort > of thing. I could also give people storage over the network to > zfs capable boxes. I'd have to upgrade and be more careful > in general with my network, but it could be done. > > > Anyhow, is anyone else using flashcache and/or bcache? I mean, right > now both seem pretty early. Thoughts on the approach? > > [1]https://github.com/facebook/flashcache/blob/master/doc/flashcache-sa-guide.txt > [2]http://bcache.evilpiepirate.org/ > > _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
