Re: What is the vision for btrfs fs repair?

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On 10/10/2014 12:53 PM, Bob Marley wrote:
>> 
>> If true, maybe the closest indication we'd get of btrfs stablity is
>> the default enabling of autorecovery.
> 
> No way! I wouldn't want a default like that.
> 
> If you think at distributed transactions: suppose a sync was issued
> on both sides of a distributed transaction, then power was lost on
> one side, than btrfs had corruption. When I remount it, definitely
> the worst thing that can happen is that it auto-rolls-back to a
> previous known-good state.

I cannot agree. I consider a sane default to have a consistent state with 
"the recently data written lost", instead of "require the user 
intervention to not lost anything".

To address your requirement, we need a "super sync" command which
ensure that the data are in the filesystem and not only
in the log (as sync should ensure).

BR

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