Re: [PATCH V2] Btrfs: disable online scrub repair on ro cases

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On Fri, Dec 04, 2015 at 09:58:04AM -0800, Liu Bo wrote:
> This disables repair process on ro cases as it can cause system
> to be unresponsive on the ASSERT() in repair_io_failure().
> 
> This can happen when scrub is running and a hardware error pops up,
> we should fallback to ro mounts gracefully instead of being unresponsive.

So this will also report the error as uncorrectable. This might be a bit
misleading, if a device error happens first and then some potentially
corectable errors are detected. This could be accounted as 'unverified'
error, that has closet maning.
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