Re: potential stuck lock in SaveSlotToPath()

On 2020-Mar-18, Andres Freund wrote:

> Hi,
> 
> On 2020-03-18 16:46:23 +0100, Peter Eisentraut wrote:
> > When SaveSlotToPath() is called with elevel=LOG, the early exits don't
> > release the slot's io_in_progress_lock.  Fix attached.
> 
> I'm a bit confused as to why we we ever call it with elevel = LOG
> (i.e. why we have the elevel parameter at all). That seems to have been
> there from the start, so it's either me or Robert that's to blame. But I
> can't immediately see a reason for it?

I guess you didn't want failure to save a slot be a reason to abort a
checkpoint.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services