Will "btrfs scrub" clear corrupt filesystem trees?

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I have 1.5TB of data on a single disk formatted with defaults. There
appears to be only two directory trees of a few MBytes that have
suffered corruption (due to in the past too high a sata speed causing
corruption).

The filesystem mounts fine. But how to clear out the corrupt trees?

At the moment, I have running:

btrfsck --repair --init-extent-tree /dev/sdc

parent transid verify failed on 911904604160 wanted 17448 found 17449
parent transid verify failed on 911904604160 wanted 17448 found 17449
parent transid verify failed on 911904604160 wanted 17448 found 17449
parent transid verify failed on 911904604160 wanted 17448 found 17449
Ignoring transid failure

... And it is still running after over two days now. Looped?


Would a:

btrfs scrub start

clear out the corrupt trees?

Must I wait for the btrfsck to complete if it is recreating an extents
tree?...


Suggestions welcomed...

Martin

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