[OpenAFS] Re: 1.6.0pre2 - more vos issues, possible bug

[Andy Cobaugh]

On 2011-03-07 at 11:03, Andrew Deason ( adeason@sinenomine.net ) said:
> On Fri, 4 Mar 2011 19:42:04 -0500 (EST)
> Andy Cobaugh <phalenor@gmail.com> wrote:
>
>>> Tue Mar  1 00:02:12 2011 VReadVolumeDiskHeader: Couldn't open header for volume 536871061 (errno 2)
>>>
>>> means the volume doesn't exist. It's not that it's corrupt or
>>> anything; the volume was completely deleted. (or something just
>>> deleted the .vol header, but the other messages suggest it was
>>> deleted normally)
>>
>> What does 'deleted normally' mean in this context? Nothing touched the
>> volume since the previous night, where it created the .backup volume
>> just fine. Unfortunately, those logs have since rolled over, so I
>> don't have anything older than from when I restarted the fileserver at
>> 16:12 on Mar 1.
>
> Deleted normally as in, a 'vos remove' or 'vos zap'. The volume header
> didn't exist, and we didn't encounter any extant files when recreating
> the clone, suggesting that the backup clone was cleanly deleted before
> we tried making a new one.

Nope, nothing like that, so it must have been deleted abnormally somehow. 
I'll keep an eye out for this next time.

> Yes, when the volume got caught in that state, any access could have
> triggered a salvage (since it was in a half-created state). So, an
> examine or someone just trying to access 'yesterday' (or whatever you
> call it) could have caused that.

daily_backup_snapshot

That was probably it.

--andy