Re: experimental features

[Mark Nelson <mark.nelson@inktank.com>]

I've been thinking for a while that we need another more general command 
than Ceph health to more generally inform you about your cluster.  IE I 
personally don't like having min/max PG warnings in Ceph health (they 
can be independently controlled by ceph.conf options but that kind of 
approach won't scale). I'd like another command that I can run that 
tells me about this kind of thing.  Same thing with experimental 
features.  I don't want ceph health warning me if they've been enabled, 
but I do want to know if they've ever been enabled, when, and whether 
they are still in effect.

Mark

On 12/08/2014 06:57 AM, Fred Yang wrote:
> You will have to consider in the real world whoever built the cluster
> might not document the dangerous option to let support stuff or
> successor aware. Thus any experimental feature considered not safe for
> production should be included in a warning message in 'ceph health', and
> logs, either log it periodically or log the warning msg upon restart.
> Feature-wise, 'ceph health detail' should give you a report over all
> important features/options of the cluster as well.
>
> -Fred
>
> On Sun, Dec 7, 2014, 11:15 PM Justin Erenkrantz <justin@erenkrantz.com
> <mailto:justin@erenkrantz.com>> wrote:
>
>     On Fri, Dec 5, 2014 at 12:46 PM, Mark Nelson
>     <mark.nelson@inktank.com <mailto:mark.nelson@inktank.com>> wrote:
>      > I'm in favor of the "allow experimental features" but instead
>     call it:
>      >
>      > "ALLOW UNRECOVERABLE DATA CORRUPTING FEATURES" which makes things
>     a little
>      > more explicit. With great power comes great responsibility.
>
>     +1.
>
>     For Subversion, we utilize SVN_I_LOVE_CORRUPTED_XXX for a few options
>     that can cause data corruption.  -- justin
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