On Fri, Oct 23, 2015 at 1:48 PM, Emmanuel Florac <eflorac@xxxxxxxxxxxxxx> wrote: > YMMV, but here's my take: > > * flashcache being a facebook internal dev, probably is the most > largely deployed one. It's clearly production-ready. > > * EnhanceIO works fine but I haven't tested it thoroughly. It adds no > signature to the drives so it can be added to existing filesystems > (flashcache and bcache need reformatting). However that means that > bad thing may happen if you're careless -- it's clearly targeted at > always-on servers. > > * bcache works fine but the latest fixes haven't been backported, so > you should probably use it only with latest (4.2, 4.3) kernels. It's > not very mature yet but it's *friggin' fast*. > > * dm-cache is the easiest to set-up with the lvmcache command (if your > distro is recent enough of course). Like very very easy. It's > unfortunately the slowest of the pack, apparently. Doesn't need > reformatting IF your existing FS already lives in a LV. Very good summary, thanks! Do you also happen to know if all of these retain cache contents across reboots? _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
