recent VFS_MOUNT changes and system hangs

To: tech-kern%netbsd.org@localhost, current-users%netbsd.org@localhost
Subject: recent VFS_MOUNT changes and system hangs
From: Christoph Egger <Christoph_Egger%gmx.de@localhost>
Date: Wed, 28 May 2008 11:47:50 +0200

Hi!

When I boot multiuser with root on nfs, I figured out
the umount -a in /etc/rc.d/root causes a system hang.
Further, the system hangs on shutdown/reboot after
syslogd got signal 15.

Tonnerre boots netbsd 4 with root on nfs successfully.
/etc/rc.d/root hasn't been changed since then.

Luke Mewburn pointed to recent VFS_MOUNT changes,
that may broke boot with root on nfs.

Christoph

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