[Gluster-devel] IMPORTANT: AFR Users

[Brandon Lamb]

On Fri, May 9, 2008 at 3:08 PM, Anand Babu Periasamy <ab at gnu.org.in> wrote:
> Brandon Lamb wrote:
>>
>> On Fri, May 9, 2008 at 2:53 PM, Anand Babu Periasamy <ab at gnu.org.in>
>> wrote:
>>>
>>> RACE CONDITION IN AFR:
>>> ----------------------
>>> * Who is affected?
>>> If you are using AFR in a multi-user environment and your applications
>>> are writing to common files without locks, there is a possibility
>>> CORRUPTION.
>>>
>>> GlusterFS is expected to write atomically across replicated volumes
>>> when the files are opened with O_APPEND mode, irrespective of locks.
>>> Fix in works will ensure all writes to be atomic always. We will
>>> make an announcement shortly.
>>>
>>> Thanks to Gordan Bobic and Martin Fick for identifying this bug.
>>>
>>> --
>>> Anand Babu Periasamy
>>> GPG Key ID: 0x62E15A31
>>> Blog [http://ab.freeshell.org]
>>> The GNU Operating System [http://www.gnu.org]
>>> Z RESEARCH Inc [http://www.zresearch.com]
>>>
>>>
>>>
>>> _______________________________________________
>>> Gluster-devel mailing list
>>> Gluster-devel at nongnu.org
>>> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>>
>> Is corruption the correct word here, or would it be more accurate to
>> say "inconsistent"? I suppose it is a point of view.
>>
>> It is just that to me corruption means the data in my files is
>> unusable, which is slightly different than the data is "good" on both
>> copies, they just are not the SAME. I could still at least pick one to
>> use, whereas corruption to means I have no good data.
>>
>> Unimportant maybe but corruption might freak people out a little more
>>
>> =P
>
> You are correct. No information is lost, but files get inconsistent.
> This is still a very critical issue to us. Being in the file system
> space, we should always be paranoid about reliability and correctness.
>
> --
> Anand Babu Periasamy
> GPG Key ID: 0x62E15A31
> Blog [http://ab.freeshell.org]
> The GNU Operating System [http://www.gnu.org]
> Z RESEARCH Inc [http://www.zresearch.com]

Sooo you guys should have this fixed by, say, this afternoon? Right on!

=P
hehehe i kid i kid!