Hi all, This is the ninth revision of a patchset that adds to XFS kernel support for online metadata scrubbing and repair. There aren't any on-disk format changes. The overview of the online scrub functionality isn't any different than it was with the first kernel series, so I'll dive into what's in this set. Today's submission is the third of four parts; it adds to the various metadata scrubbers the ability to cross-reference other metadata. If a given record has a corresponding record somewhere else (e.g. each inobt record has a corresponding rmapbt record for inodes) or lacks a corresponding record elsewhere (e.g. each bmbt record does /not/ match to any bnobt records) then we can be far more certain of the filesystem's correctness. We try to augment each scrubber with as many cross-reference checks as we possibly can, though we are careful to avoid deadlocks when taking locks in reverse order (rmapbt). If you're going to start using this mess, you probably ought to just pull from my git trees. The kernel patches[1] should apply against 4.13-rc4. xfsprogs[2] and xfstests[3] can be found in their usual places. The git trees contain all four series' worth of changes. This is an extraordinary way to eat your data. Enjoy! Comments and questions are, as always, welcome. --D [1] https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=djwong-devel [2] https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=djwong-devel [3] https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=djwong-devel -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
