Re: CVS mirror, was Re: [PATCHES] ADD/DROPS INHERIT (actually INHERIT

19 minutes past the hour, every hour ...

On Mon, 3 Jul 2006, Andrew Dunstan wrote:

>
> [redirecting to -hackers]
>
> context: a buildfarm member apparently failed through getting a partial
> update from CVS, possibly because the anonymous mirror was also partially
> updated.
>
> Tom Lane wrote:
>
>> "Andrew Dunstan" <andrew(at)dunslane(dot)net> writes:
>>
>>> Since CVS updates are not atomic, it's hard to see how mirroring could be,
>>> unless you did something like disallow updates, mirror, allow updates. I
>>> suspect such a cure would be worse than the disease. This is such a rare
>>> event that I don't think it's worth the trouble. Buildfarm members are
>>> doing
>>> 200 builds a day or more, and I can't recall having seen this before.
>>>
>>
>> Yeah, I don't remember having seen it before either, but on the other
>> hand I haven't been paying super close attention.
>>
>> One easy low-tech fix would be for Marc to publish the exact times at
>> which the mirror syncs run (I think it might be something like 20 past
>> the hour but I'm not sure), and then we could tell buildfarm owners not
>> to schedule their CVS pulls to start in that particular five-minute
>> window, and committers could try to avoid committing many-file patches
>> right then either.
>>
>>
>
> Yuck. I think if it gets that far we would have discovered a compelling
> reason to abandon CVS, as many bystanders have urged us to do. But I think we
> can live with an occasional hiccup.
>
>
> cheers
>
> andrew
>
>

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