lightnvm: pblk: only try to recover lines with written smeta
When switching between different lun configurations, there is no guarantee that all lines that contain closed/open chunks have some valid data to recover. Check that the smeta chunk has been written to instead. Also skip bad lines (that does not have enough good chunks). Signed-off-by: NHans Holmberg <hans.holmberg@cnexlabs.com> Signed-off-by: NMatias Bjørling <mb@lightnvm.io> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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