28 Jul
2020
28 Jul
'20
10:06 a.m.
On Mon, 27 Jul 2020, Warner Losh wrote:
I've done some research for a friend about when
the reboot() system call
was added, and how it related to the sync, sync, sync dance.
https://bsdimp.blogspot.com/2020/07/when-unix-learned-to-reboot2.html
may be of interest. Please do let me know if I've gotten
something wrong...
Seems OK to me; I was taught never to use "sync; sync; sync" for precisely
those reasons (the buffers may not have time to flush etc, as "sync"
merely schedules the I/O, not cause it.
-- Dave