Re: Stopping ceph daemons during the upgrade

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On Mon, 18 Aug 2014, Loic Dachary wrote:
> Hi Dan,
> 
> Pre-loading the erasure code plugins will reduce this race condition 
> (i.e. the files will have to be modified between the start of the 
> ceph-osd process and the bootstrap phase where it loads the plugins for 
> it to happen) and it seems to be preferable to stopping the daemons. 
> Thanks for giving an additional incentive to go in this direction !

BTW Loic, one other thing would could do is have a number or string in the 
.so interface that we bump when the interface changes.  Then loading the 
plugin could fail with a friendly message instead of crashing.

sage
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