Re: Clean shutdown and warm standby

Simon Riggs wrote:
> On Thu, 2009-05-28 at 16:19 +0300, Heikki Linnakangas wrote:
>> Simon Riggs wrote:
>>> On Thu, 2009-05-28 at 14:04 +0300, Heikki Linnakangas wrote:
>>>
>>>> I've committed a patch to do the RequstXLogSwitch() before shutdown 
>>>> checkpoint as discussed. It seems safe to me. (sorry for the delay, and 
>>>> thanks for the reminder)
>>> Not sure if that is a fix that will work in all cases. 
>>>
>>> There is a potential timing problem with when the archiver is shutdown:
>>> that may now be fixed in 8.4, see what you think.
>> Can you elaborate?
> 
> Is the archiver still alive and working after the log switch occurs?

Yes.

> If the archiver is working, but has fallen behind at the point of
> shutdown, does the archiver operate for long enough to ensure we are
> archived up to the point of the log switch prior to checkpoint?

Yes, it archives all pending WAL segments before exiting.

Ok, we're good then I guess.

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