On 01.01.2011 19:03, Simon Riggs wrote:
On Sat, 2011-01-01 at 17:37 +0100, Stefan Kaltenbrunner wrote:
On 01/01/2011 05:28 PM, Dimitri Fontaine wrote:
Stefan Kaltenbrunner<ste...@kaltenbrunner.cc>   writes:
well you keep saying that but to be honest I cannot really even see a
usecase for me - what is "only a random one of a set of servers is sync at
any time and I don't really know which one".

It looks easy enough to get to know which one it is.  Surely the primary
knows and could update something visible through a system view for
users?  This as been asked for before and I was thinking there was a
consensus on this.

well as jeff janes already said - anything that requires the master to
still exist is not useful for a desaster.

Nobody has suggested that the master needs to still exist after a
disaster.

Dimitri just did, see above. I agree it's not very useful.

I don't think there's any other solution to knowing which standby is ahead than connect to both standbys and ask how far each is. I don't see a problem with that, whatever middleware handles the failover and STONITH etc. should be able to do that too.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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