On 21-07-15 20:37, David Mohr wrote: > one quick question about the roadmap at this point: As far as I understand bcachefs basically integrates bcache features directly in the filesystem. > So does this deprecate bcache itself in your opinion? Bcache is obviously still useful for other FS, but I just want to know how things will get maintained in the future. If they remove bcache from the kernel a lot of peaple are going to have serious troubles, as it's not easy to remove. But to quote the developer: "no don't worry. it's not going to be deleted from upstream" > I wanted to suggest / possibly start implementing bcache support for the debian installer - obviously that only makes sense if I can expect it to be in the mainline kernel for the foreseeable future :-). I can also make a quote on this question: "the btree code is also hugely improved over what's in mainline, i'd like to get the improvements backported but i think it's just way way too much work" "bcache will be deprecated when a stable bcachefs is upstream (but it's going to be awhile before the on disk format is stable again)" More info on what bcachefs actually is: You initialize some fast storage as a caching-device. These store a btree-journal-change (or whatever is actually used internally) key-value storage system on disk. Next you can use this btree-caching-device to put a file system on top OR use it to store the cache data for a caching-block-device. (Not sure if you can combine a caching device and a backing device into the same FS, but you will probably be able to.) -- Killian De Volder -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
