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Teach online scrub about the metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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If we can't find a parent for a file, move it to the orphanage.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Teach the online repair code to fix directory '..' entries (aka
directory parent pointers). Since this requires us to know how to scan
every dirent in every directory on the filesystem, we can reuse the
parent scanner components to validate (or find!) the correct parent
entry when rebuilding directories too.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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If a directory looks like it's in bad shape, try to sift through the
rubble to find whatever directory entries we can, scan the directory
tree for the parent (if needed), stage the new directory contents in a
temporary file and use the atomic extent swapping mechanism to commit
the results in bulk. As a side effect of this patch, directory
inactivation will be able to purge any leftover dir blocks.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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