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MeeGo and Btrfs

May 21, 2010, 21:33 (0 Talkback[s])
(Other stories by Jonathan Corbet)

"MeeGo is arguably the dark horse in the mobile platform race: it is new, unfinished, and unavailable on any currently-shipping product, but it is going after the same market as a number of more established platforms. MeeGo is interesting: it is a combined effort by two strong industry players which are trying, in the usual slow manner, to build a truly community-oriented development process. For the time being, though, important development decisions are still being made centrally. Recently, a significant decision has come to light: MeeGo will be based on the Btrfs file system by default.

"Btrfs is seen as the long-term future of Linux filesystems, representing a much-needed clean break from the legacy filesystem designs we have been using for all these years. With the demise of reiser4 and the unavailability of ZFS, Btrfs would seem to be the only contender for that title. But talk about Btrfs is always framed in "it's not stable yet" terms, with few people willing to commit themselves to an actual date when the filesystem might be ready for production use. It is generally assumed that most cautious users will spend some years running on ext4 before making the jump to Btrfs. The 2.6.34 kernel will be released with this text still guarding the Btrfs configuration entry:

"Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET FINALIZED. You should say N here unless you are interested in testing Btrfs with non-critical data."

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