Re: [Qemu-devel] [PATCH] Flush pending AIO on reboot and shutdown.

[Gleb Natapov]

On Wed, Aug 13, 2008 at 02:46:08PM +0100, Samuel Thibault wrote:
> Gleb Natapov, le Wed 13 Aug 2008 16:23:58 +0300, a écrit :
> > If there is outstanding IDE IO when BIOS starts execution then IDE
> > commands sent by BIOS will interfere with it and will leave IDE
> > subsystem in unpredictable state. This can happen when system reboots
> > unexpectedly without waiting for IO completion. Flushing IO before exit
> > prevents data lose.
> 
> I'm wondering: isn't that what happens with real machines?
> 
With shutdown yes, but why not try harder. With reboot I don't think
that in real HW you can hang IDE interface after reboot ;)

--
                        Gleb.