[PATCHSET v26.0 0/2] xfs: add usage counters for scrub

Darrick J. Wong
2023-07-27T22:19:24Z

Hi all,

This series introduces simple usage and performance counters for the
online fsck subsystem. The goal here is to enable developers and
sysadmins to look at summary counts of how many objects were checked and
repaired; what the outcomes were; and how much time the kernel has spent
on these operations. The counter file is exposed in debugfs because
that's easier than cramming it into the device model, and debugfs
doesn't have rules against complex file contents, unlike sysfs.

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=scrub-usage-stats
---
fs/xfs/Kconfig | 17 ++
fs/xfs/Makefile | 1
fs/xfs/scrub/repair.c | 11 +
fs/xfs/scrub/repair.h | 7 +
fs/xfs/scrub/scrub.c | 11 +
fs/xfs/scrub/stats.c | 405 +++++++++++++++++++++++++++++++++++++++++++++++++
fs/xfs/scrub/stats.h | 59 +++++++
fs/xfs/xfs_linux.h | 1
fs/xfs/xfs_mount.c | 9 +
fs/xfs/xfs_mount.h | 4
fs/xfs/xfs_super.c | 53 ++++++
fs/xfs/xfs_super.h | 2
12 files changed, 569 insertions(+), 11 deletions(-)
create mode 100644 fs/xfs/scrub/stats.c
create mode 100644 fs/xfs/scrub/stats.h