Hi all, Create a vectorized version of the metadata scrub and repair ioctl, and adapt xfs_scrub to use that. This is an experiment to measure overhead and to try refactoring xfs_scrub. If you're going to start using this code, I strongly recommend pulling from my git trees, which are linked below. This has been running on the djcloud for months with no problems. 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=vectorized-scrub xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=vectorized-scrub fstests git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=vectorized-scrub --- Commits in this patchset: * man: document vectored scrub mode * libfrog: support vectored scrub * xfs_io: support vectored scrub * xfs_scrub: split the scrub epilogue code into a separate function * xfs_scrub: split the repair epilogue code into a separate function * xfs_scrub: convert scrub and repair epilogues to use xfs_scrub_vec * xfs_scrub: vectorize scrub calls * xfs_scrub: vectorize repair calls * xfs_scrub: use scrub barriers to reduce kernel calls * xfs_scrub: try spot repairs of metadata items to make scrub progress --- io/scrub.c | 368 ++++++++++++++++++++++++++++++---- libfrog/fsgeom.h | 6 + libfrog/scrub.c | 137 +++++++++++++ libfrog/scrub.h | 35 +++ man/man2/ioctl_xfs_scrubv_metadata.2 | 171 ++++++++++++++++ man/man8/xfs_io.8 | 51 +++++ scrub/phase1.c | 2 scrub/phase2.c | 93 +++++++-- scrub/phase3.c | 84 ++++++-- scrub/repair.c | 355 +++++++++++++++++++++------------ scrub/scrub.c | 360 +++++++++++++++++++++++++-------- scrub/scrub.h | 19 ++ scrub/scrub_private.h | 55 +++-- scrub/xfs_scrub.c | 1 14 files changed, 1431 insertions(+), 306 deletions(-) create mode 100644 man/man2/ioctl_xfs_scrubv_metadata.2
