Hi all, In the base needsrepair patchset, we set up the basics of handling the new NEEDSREPAIR flag in xfsprogs. This second series enables repair to protect users against the system going down after repair begins to dirty the filesystem but before it completes. We start by adding a write hook to the xfs_mount so that repair can intercept the first write to set NEEDSREPAIR on the filesystem and the ondisk super, and finish off by inserting error injection points into libxfs and xfs_repair so that fstests can verify that this actually works. v2: Improve documentation per reviewer request, fix some minor bugs, refactor repair's phase end function. If you're going to start using this mess, you probably ought to just pull from my git trees, which are linked below. This is an extraordinary way to destroy everything. Enjoy! Comments and questions are, as always, welcome. --D xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=repair-set-needsrepair --- include/linux.h | 13 +++++ include/xfs_mount.h | 4 ++ libxfs/init.c | 68 +++++++++++++++++++++++++- libxfs/libxfs_io.h | 19 +++++++ libxfs/rdwr.c | 10 +++- repair/globals.c | 3 + repair/globals.h | 3 + repair/xfs_repair.c | 132 ++++++++++++++++++++++++++++++++++++++++++++++++--- 8 files changed, 238 insertions(+), 14 deletions(-)