Re: High-sensitivity fs checker (not repairer) for btrfs

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On Sat, Nov 10, 2012 at 4:32 PM, Bob Marley <bobmarley@xxxxxxxxxxxxx> wrote:
> On 11/10/12 22:23, Hugo Mills wrote:
>>
>>     The closest thing is btrfsck. That's about as picky as we've got to
>> date.
>>
>>     What exactly is your use-case for this requirement?
>
>
> We need a decently-available system. We can rollback filesystem to
> last-known-good if the "test" detects an inconsistency on current btrfs
> filesystem, but we need a very good test for that (i.e. if last-known-good
> is actually bad we get into serious troubles).

Scrub is probably more useful as a check, combined with "does the
filesystem actually mount".

> So do you think btrfsck can return a false "OK" result? can it "not-see" an
> inconsistency?

No set of checks will ever be perfect, so yes.
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