Re: Out of space situation and WAL log pre-allocation (was

Simon Riggs wrote:
> User-selectable behaviour? OK. That's how we deal with fsync; I can
> relate to that. That hadn't been part of my thinking because of the
> importance I'd attached to the log files themselves, but I can go with
> that, if that's what was meant.
> 
> So, if we had a parameter called Wal_archive_policy that has 3 settings:
> None = no archiving
> Optimistic = archive, but if for some reason log space runs out then
> make space by dropping the oldest archive logs 
> Strict = if log space runs out, stop further write transactions from
> committing, by whatever means, even if this takes down dbms.
> 
> That way, we've got something akin to transaction isolation level with
> various levels of protection.

Yep, we will definately need something like that.  Basically whenever
the logs are being archived, you have to stop the database if you can't
archive, no?

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