This news from Chris Mason on the linux-btrfs mailing list:
Just a quick note that Linus merged the btrfs unstable repository into the mainline kernel. I’ll cut a new stable release of btrfs-progs on Monday to go with it (for now the unstable repo is the best choice).
I’d like to thank everyone who contributed to the code, tested, reviewed, documented, helped organize and otherwise helped Btrfs get as far as it has. It wouldn’t have been possible without you.
There is a lot of work to do before we can really declare Btrfs finished, but this is a huge step forward.
Yay! Congratulations Chris.. 🙂
For those who want to know more about btrfs, please check out its wiki page..
After reading with interest your posts about new filesystems, I would like to see what you think of NILFS2 which has just appeared in Debian.
I’ve not really played with it since I tested it as part of my Emerging Linux Filesystems article for Linux World back in 2007. It worked quite well and I liked the fact that it had a daemon to take regular (fixed-lifetime) checkpoints which could be converted into persistent snapshots (and back again) as required.
I’m still on the (fairly quiet, but active) mailing lists for it and the developers are still trying to track down issues that are causing some people some pain with it (mostly around the cleanerd process), I’d suggest checking the archives for more details.
It’s also been really nice to see very positive engagement and cooperation between the NILFS and btrfs folks on both lists.