[PATCHSET,v3,0/4] xfs_repair: set needsrepair when dirtying filesystems

Message

Darrick J. Wong Feb. 23, 2021, 3:01 a.m. UTC

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.
v3: 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

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, 239 insertions(+), 13 deletions(-)