Hi all, This series adds userspace support for a new incompat feature flag so that we can force a sysadmin to run xfs_repair on a filesystem before mounting. This will be used in conjunction with v5 feature upgrades. All of these patches are reviewed and (hopefully) already in Eric's upstream tree. v2: tweak the "can't upgrade" behavior and repair messages v3: improve documentation, define error codes for the upgrade process, and only force repair if NEEDSREPAIR is set v4: move all the upgrader code to xfs_repair per Eric suggestion v5: various fixes suggested by reviewers, and document deprecated V4 options v6: break this series into smaller pieces since this is all the reviewed stuff; and fix some comments 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 kernel git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=needsrepair xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=needsrepair fstests git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=needsrepair --- db/check.c | 5 ++++ db/sb.c | 13 ++++++++++++ db/xfs_admin.sh | 13 ++++++------ include/xfs_mount.h | 1 + libxfs/init.c | 20 ++++++++++++------ man/man8/xfs_admin.8 | 8 +++++++ repair/agheader.c | 21 +++++++++++++++++++ repair/xfs_repair.c | 56 ++++++++++++++++++++++++++++++++++++++++++-------- 8 files changed, 115 insertions(+), 22 deletions(-)