At 04/18/2017 08:41 PM, Werner Braun wrote:
Hi,
i have a WD WD40EZRX with strange beaviour off btrfs check vs. btrfs scrub
running btrfs check --check-data-csum returns no errors on the disk
running btrfs scrub on the disk finds tons of errors
i could clear the disk and send it to anyone intrested in ;-)
That's because --check-data-csum will only check the first copy of data
if the first copy is good.
I've submitted offline scrub patchset to address this, which is a
btrfs-progs equivalent of kernel scrub.
https://github.com/adam900710/btrfs-progs/tree/offline_scrub
Thanks,
Qu
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