No subject


Tue Oct 23 06:10:09 UTC 2012


> 
> Because removing a node from the cluster because it shut down is... an
> interesting idea.

BTW even that could be possible if quorum.allow_downscale is enabled,
but requires much more thinking and probably more functionality from
corosync. I'm not ready to comment on that yet though.

I was about node removal from a CMAP's nodelist with corosync_cmapctl
command. Of course, absence of (optional) nodelist in CMAP would result
in NOOP because there is no removal event on a nodelist.node tree from cmap.

> 
>> Certainly, this requires some CMAP values (especially votequorum ones
>> and may be totem mode) to have some 'well-known' values, f.e. only UDPU
>> mode and quorum.allow_downscale=1, that should be defined yet.
>>
>> May be, it also have sense to make this depend on some new CMAP
>> variable, f.e. nodelist.dynamic=1.
>>
>> I would even try to implement this if general agreement is gained and
>> nobody else wants to implement this.
>>
>> Can you please comment on this?
>>
>> Vladislav
>>
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> 
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