Re: File system for scratch space (in HPC cluster)

[Theodore Y. Ts'o]

On Thu, Oct 24, 2019 at 12:43:40PM +0200, Paul Menzel wrote:
> 
> In our cluster, we offer scratch space for temporary files. As
> these files are temporary, we do not need any safety
> requirements â especially not those when the system crashes or
> shuts down. So no `sync` is for example needed.
> 
> Are there file systems catering to this need? I couldnât find
> any? Maybe I missed some options for existing file systems.

You could use ext4 in nojournal mode.  If you want to make sure that
fsync() doesn't force a cache flush, you can mount with the nobarrier
mount option.

					- Ted