On Wed, 1 May 2019 at 17:34, Andrew Hutchings andrew@linuxjedi.co.uk wrote:
If you are just writing large files to it then maybe mounting with sync and noatime will help?
I'm extracting an OS image onto it (from a tar.gz file, not a binary image) so it's lots of small files. I would have thought that sync would slow down the write (but haven't thought to try it).
Never crossed my mind to play with options at the mount stage, so I'll play, thanks. It happens that I am mounting within my script anyway so it's not a big thing to try.
(Still feels like it should be possible to properly monitor whether a device is busy and how much delayed write data is pending, though.)