Re: Will BTRFS repair or restore data if corrupted?

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On 1/26/2012 9:59 AM, Hugo Mills wrote:
> On Thu, Jan 26, 2012 at 12:27:57AM +0100, Waxhead wrote:
[...]
>> Will BTRFS try to repair the corrupt data or will it simply silently
>> restore the data without the user knowing that a file has been
>> "fixed"?
> 
>    No, it'll just return the good copy and report the failure in the
> system logs. If you want to fix the corrupt data, you need to use
> scrub, which will check everything and fix blocks with failed
> checksums.

Since 3.2, btrfs rewrites the corrupt disk block (commit 4a54c8c and
f4a8e65 from Jan Schmidt), even without scrub.
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