Re: btrfs constant background write activity even at idle

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Can you try 

 ceph tell osd.71 injectargs '--filestore-max-sync-interval 20'

(or some other btrfs osd) and see if it changes?

sage


On Wed, 4 Dec 2013, James Harper wrote:

> > Hi James,
> > 
> > Can you generate an OSD log with 'debug filestore = 20' for an idle period?
> > 
> 
> The best I can do right now is 'relatively idle'. Ceph -w says that the cluster is averaging 70op/s, and ~300KB/s io.
> 
> Logfile is attached. The osd rejoined the cluster around 08:55. That's another thing, it may be anecdotal, but the OSD's on btrfs seem to take a long time to rejoin.
> 
> James
> 
> 
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