Обсуждение: CVS mirror, was Re: [PATCHES] ADD/DROPS INHERIT (actually INHERIT / NO INHERIT)
CVS mirror, was Re: [PATCHES] ADD/DROPS INHERIT (actually INHERIT / NO INHERIT)
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Andrew Dunstan
Дата:
[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@dunslane.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
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@dunslane.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 > > ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664