xfs_scrub: try spot repairs of metadata items to make scrub progress
Now that we've enabled scrub dependency barriers, it's possible that a
scrub_item_check call will return with some of the scrub items still in
NEEDSCHECK state. If, for example, scrub type B depends on scrub type
A being clean and A is not clean, B will still be in NEEDSCHECK state.
In order to make as much scanning progress as possible during phase 2
and phase 3, allow ourselves to try some spot repairs in the hopes that
it will enable us to make progress towards at least scanning the whole
metadata item. If we can't make any forward progress, we'll queue the
scrub item for repair in phase 4, which means that anything still in in
NEEDSCHECK state becomes CORRUPT state. (At worst, the NEEDSCHECK item
will actually be clean by phase 4, and xfs_scrub will report that it
didn't need any work after all.)
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
3 files changed
