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

On Tue, Mar 27, 2018 at 11:53:08PM -0400, Tom Lane wrote:
> Craig Ringer <craig@2ndquadrant.com> writes:
>> TL;DR: Pg should PANIC on fsync() EIO return.
>
> Surely you jest.

Any callers of pg_fsync in the backend code are careful enough to check
the returned status, sometimes doing retries like in mdsync, so what is
proposed here would be a regression.
--
Michael