Hi, On Wed, Jan 15, 2025 at 09:12:17AM +0000, Andy Fan wrote: > I can understand that "the file space has really been allocated", but > why do we care about this? > > One reason I can think of is it has something with "out-of-disk-space" > sistuation, even though what's the benefit of it since we can't do > anything in such case anyway no matter the wal space is pre-alocated or > not?
My understanding was that if we have pre-allocated wal space (and re-cycle already used wal files), we can still write wal records into that pre-allocated space and still issue changes to data files as long as we don't need to enlarge any. So an out-of-space situation is less bad in that case than if we fail to write WAL with ENOSPC. Michael
