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authorDarrick J. Wong <darrick.wong@oracle.com>2019-04-26 04:26:24 +0300
committerDarrick J. Wong <darrick.wong@oracle.com>2019-04-30 18:19:13 +0300
commit75efa57d0bf5fcf650a183f0ce0dc011ba8c4bc8 (patch)
treed6dfd62d2680be7cdb73e61e857e833f12ae0a78 /fs/xfs/xfs_fsops.c
parent94079285756d66b1aded4e36d35452cb1f9c953a (diff)
downloadlinux-75efa57d0bf5fcf650a183f0ce0dc011ba8c4bc8.tar.xz
xfs: add online scrub for superblock counters
Teach online scrub how to check the filesystem summary counters. We use the incore delalloc block counter along with the incore AG headers to compute expected values for fdblocks, icount, and ifree, and then check that the percpu counter is within a certain threshold of the expected value. This is done to avoid having to freeze or otherwise lock the filesystem, which means that we're only checking that the counters are fairly close, not that they're exactly correct. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_fsops.c')
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