Re: unconfiguring swap at shutdown

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Aug 31, 2008 at 10:06:29AM +0000, Christos Zoulas wrote:
> In article <20080831095532.GA4185%antioche.eu.org@localhost>,
> Manuel Bouyer  <bouyer%antioche.eu.org@localhost> wrote:
> >On Sun, Aug 31, 2008 at 05:38:36PM +1000, matthew green wrote:
> >> [...]
> >> swapoff == removing a swap device from use, which means, in the
> >> current code, brining all those pages back into ram.
> >
> >"all swap pages in use" is more correct.
> >
> >As I understand it, all processes would have already been terminated when
> >uvm_shutdown() is called. So there would be no more swap pages in use,
> >exept maybe those used by tmpfs. tmpfs would have to be unmounted before
> >uvm_shutdown() is called, which is a problem if /dev is on mfs.
> >
> >Also I think it may fail if tmpfs is larger than physical ram.
> >I think the right thing would be to either forcibly close the swap devices
> >after the filesystems have been unmounted, or maybe add a shutdown
> >hook to raidframe to forcibly close still open raidframe devices.
> 
> What if the tempfs /dev is on raidframe?

I don't think raidframe needs /dev to be mounted to close its
volumes and cleanup its component, does it ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--