On Fri, Aug 22, 2014 at 8:35 AM, Duncan <1i5t5.dun...@cox.net> wrote: > Konstantinos Skarlatos posted on Fri, 22 Aug 2014 09:56:55 +0300 as > excerpted: > >> I would stay with rsync for a while, because there is always the >> possibility of a bug that corrupts both your primary filesystem and your >> backup one, or send propagating corruption from one filesystem to >> another (Or maybe I am too paranoid, it would be good if we could have >> the opinion of a btrfs developer on this) > > No claim to be a dev, btrfs or otherwise, here, but I believe in this > case you /are/ "being too paranoid." > > Both btrfs send and receive only deal with data/metadata they know how to > deal with. If it's corrupt in some way or if they don't understand it, > they don't send/write it, they fail.
Most of the time yes, however we have at least 1 know bug that affects 3.14.x only where send silently corrupts file data (replaces valid data with zeroes) at the destination: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=766b5e5ae78dd04a93a275690a49e23d7dcb1f39 The fix landed in 3.15, but wasn't backported to 3.14.x yet (adding Chris to cc). > > IOW, if it works without error it's as guaranteed to be golden as these > things get. The problem is that it doesn't always work without error in > the first place, sometimes it /does/ fail. In that instance you can > always try again as the existing data/metadata shouldn't be damaged, but > if it keeps failing you may have to try something else, rsync, etc. > > -- > Duncan - List replies preferred. No HTML msgs. > "Every nonfree program has a lord, a master -- > and if you use the program, he is your master." Richard Stallman > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Filipe David Manana, "Reasonable men adapt themselves to the world. Unreasonable men adapt the world to themselves. That's why all progress depends on unreasonable men." -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
