Re: kern/41725 (uvm fault and problems unmounting file sytems at shutdown)

[Alan Barrett <apb%cequrux.com@localhost>]

On Tue, 28 Jul 2009, David Young wrote:
> > However, I remain concerned about the fact that the /dev/md0a and
> > /dev/cgd1a file systems were unmounted forcefully instead of gracefully,
> 
> If files are open on any filesystem, then the kernel cannot unmount it
> gracefully.  Does some process have its CWD on the root directory?

Doesn't the kernel kill all processes before this point?  If not, then
init will have its CWD in the root firectory (in the md0a fiel system),
and there are probably many processes with their CWD in the cgd1a file
system that is used as a chroot for anything run by init(8).

--apb (Alan Barrett)