Replication Craziness

komtanoo.pinpimai at livetext.com komtanoo.pinpimai at livetext.com
Tue Jun 19 22:24:47 UTC 2007


I had a weird replication problem -- sometimes replicating to the same
host and more than devcount, found out later that the clock of some
machines were not sync with others, not sure if it relates to your
problem.

On Tue, June 19, 2007 11:41 am, Russell Garrett wrote:
> We've been having some rather strange happenings with MogileFS (2.16)
> replication recently. We're seeing loads of files being replicated to silly
> devcounts (up to 27) - most of them on the same host.
>
> Our cluster is mostly full, so replicated files are lingering in
> file_to_replicate due to them being sub-optimally replicated (all on one
> host), but when the replication job gets to them, it seems to replicate
> them again anyway (to yet another device on the same least-used host),
> when it should just pass until more disks become available.
>
> I can't see any obvious problems, though, and it's really fiddly to
> debug on this live installation...
>
> Cheers,
>
>
> Russ Garrett
> Last.fm Ltd.
> russ at last.fm
>




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