Hi, I've been working on implementing online metadata scrubbing and repair in XFS. Most of the code is self contained inside XFS, but there's a small amount of interaction with the VFS freezer code that has to happen in order to shut down the filesystem to rebuild the extent backref records. It might be interesting to discuss the (fairly slight) requirements upon the VFS to support repairs, and/or have a BoF to discuss how to build an online checker if any of the other filesystems are interested in this. Concurrent with development of online scrubbing, I've also been working on a fuzz test suite for xfstests that fuzzes every field of every metadata object on the filesystem and then tries to crash the kernel, the offline repair tool (xfs_repair), or the online repair tool (xfs_scrub). I could talk about that as kind of a follow up to last year's AFL presentation, and what kinds of bugs it's uncovered. --D -- 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
