On Tue, Apr 05, 2016 at 12:12:27PM -0400, Mike Snitzer wrote: > Anyway, as Zdenek effectively: said dm-cache isn't a writecache. If you > need a writecache then bcache is the only option as of now. Though > there is an emerging DM writecache target that has stalled but can be > revisited, see: > http://git.kernel.org/cgit/linux/kernel/git/snitzer/linux.git/log/?h=writecache
bcache is still more than that, it's a combined read/writeback cache :) much like how today we only have one pagecache for both read caching and write caching. Main trick is you need a pretty sophisticated btree to pull that off with good performance. -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
