Hi,
On 2018-04-23 08:30:25 +1000, Tim Cross wrote:
> the recent article in LWN regarding issues with fsync and error
> reporting in the Linux kernel and the potential for lost data has
> prompted me to ask 2 questions.
Note that you need to have *storage* failures for this to
happen. I.e. your disk needs to die, and there's no raid or such to fix
the issue.
> 1. Is this issue low level enough that it affects all potentially
> supported sync methods on Linux? For example, if you were concerned
> about this issue and you had a filesystem which supports open_sync or
> open_datasync etc, is switching to one of these options something which
> should be considered or is this issue low level enough that all sync
> methods are impacted?
No, the issue is largely about datafiles whereas the setting you refer
to is about the WAL.
Greetings,
Andres Freund