明白了，感谢。 2015-05-17 14:07 GMT+08:00 Zhang Cheng <[email protected]>:
> > 2015-05-17 13:56 GMT+08:00 Justin Wong <[email protected]>: > >> 在有 --delay-updates 的情况下，debian 的 two-stage rsync 是否还有必要？[1] 中有讨论，结论似乎是 >> single stage 就够了，那么为什么 debian 官方仍然要求使用 two-stage rsync? > > > two-stage > rsync在一种情况下是必要的：当某一镜像在同步stage1的过程中，如果此时上游再次发起push，那么该镜像会重做stage1；在没有配置push的情况下也一样，当某镜像同步完stage1之后，会检查上游是否正处在更新中，如果上游正在更新，那么该镜像会等待直到上游更新完之后再重做stage1。Debian平均每6小时推送一次更新，如果某些镜像同步速度比较慢，一次同步会超过6个小时，那么就有可能导致该镜像数据不一致，two-stage保证了这种情况下数据的一致性。 > > > > -- > Cheng, > Best Regards > > -- > -- 来自USTC LUG > 请使用gmail订阅，不要灌水。 > 更多信息more info：http://groups.google.com/group/ustc_lug?hl=en?hl=en > --- > You received this message because you are subscribed to the Google Groups > "USTC_LUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Open Source, Open Mind -- --- You received this message because you are subscribed to the Google Groups "TUNA 主邮件列表" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. For more options, visit https://groups.google.com/d/optout.
