Re: PostgreSQL's handling of fsync() errors is unsafe and risks data loss at least on XFS

Hi,

On 2018-04-09 13:55:29 -0700, Mark Dilger wrote:
> I can also imagine a master and standby that are similarly provisioned,
> and thus hit an out of disk error at around the same time, resulting in
> corruption on both, even if not the same corruption.

I think it's a grave mistake conflating ENOSPC issues (which we should
solve by making sure there's always enough space pre-allocated), with
EIO type errors.  The problem is different, the solution is different.

Greetings,

Andres Freund