"Qingqing Zhou" <zhouqq@cs.toronto.edu> writes:
> The problem of above is if a signal sneaks in, these syscalls will fail.
> With a retry, we can fix it.
It's a bit stickier than that but only a bit. If you just retry then you're
saying users have to use kill -9 to get away from the situation. For some
filesystem operations that may be the best we can do. But for most it ought to
be possible to CHECK_FOR_INTERRUPTS() and handle the regular signals like C-c
or kill -1 normally. Even having the single backend exit (to avoid file
resource leaks) is nicer than having to restart the entire instance.
--
greg