fxkl4...@protonmail.com (12022-07-10): > I'm just flapping my gums > As a systems administrator for UNIX systems I wrote more than a few scripts > Many time I found it necessary to put a sleep between operations > Several decades ago I was taught to type sync and then type sync again before > unmounting a drive > The only reason I ever got was that the second sync was a time delay
I do not know if it was ever useful at all or if it always was cargo cult, but I am quite sure it has not been any use on Linux in the last decade. You can check for yourself: mount a slow USB stick, create file that is just large enough to fit in memory with something that you are sure will not make a (f)sync: head -c $[8*1024*1024] /dev/urandom > /media/blah/dummy Then unmount and see what happens. For extra benefit, start “grep Dirty /proc/meminfo” in another terminal before you start and keep an eye on it. Regards, -- Nicolas George
signature.asc
Description: PGP signature
