https://bugzilla.redhat.com/show_bug.cgi?id=433702

Changes to init scripts to better support stateless:

--rc.sysinit--

 - don't update mtab in a r/o root
 - mount on sys and /dev/pts returns EBUSY on a readonly root
 - [ -n $CLIENTSTATE ] is always returning true, causing an unnecessary timeout

--network--

 - /etc/mtab may not have any mount information in the readonly-root
   cause, but the root mount is likely to be a network mount.  Without
   this, nfs hangs the reboot process.

--halt--

 - don't try and update a read-only mtab

--rwtab--

 - /var/empty/sshd/etc/localtime needs to be overwritten by sshd at
   startup
 - /var/lib/random-seed is written to at shutdown; this fixes the
   error but doesn't return the functionality lost in a r/o /var/lib.

2 files changed, 7 insertions, 4 deletions

diff --git a/rc.d/init.d/halt b/rc.d/init.d/halt
index fc9a6f27..f0353ca3 100755
--- a/rc.d/init.d/halt
+++ b/rc.d/init.d/halt
@@ -11,6 +11,9 @@
 NOLOCALE=1
 . /etc/init.d/functions
 
+UMOUNT="umount"
+[ ! -w /etc ] && UMOUNT="umount -n"
+
 action() {
    echo -n "$1 "
    shift
@@ -88,7 +91,7 @@ action $"Saving random seed: " dd if=/dev/urandom of=/var/lib/random-seed count=
 # Try to unmount tmpfs filesystems to avoid swapping them in.  Ignore failures.
 tmpfs=$(awk '$2 ~ /^\/($|proc|dev)/ { next; }
 	     $3 == "tmpfs" { print $2; }' /proc/mounts | sort -r)
-[ -n "$tmpfs" ] && fstab-decode umount $tmpfs 2>/dev/null
+[ -n "$tmpfs" ] && fstab-decode $UMOUNT $tmpfs 2>/dev/null
 
 # Turn off swap, then unmount file systems.
 [ -f /proc/swaps ] && SWAPS=`awk '! /^Filename/ { print $1 }' /proc/swaps`
@@ -127,7 +130,7 @@ LANG=C __umount_loop '$2 ~ /^\/$|^\/proc|^\/dev/{next}
 	$"Unmounting file systems (retry): " \
 	-f
 
-[ -f /proc/bus/usb/devices ] && umount /proc/bus/usb
+[ -f /proc/bus/usb/devices ] && $UMOUNT /proc/bus/usb
 
 [ -f /etc/crypttab ] && halt_crypto
 
@@ -139,7 +142,7 @@ rm -f /.autofsck
 awk '$2 !~ /\/(|dev|proc|selinux|sys)$/ && $1 !~ /^\/dev\/ram/ { print $2 }' \
     /proc/mounts | sort -r | \
   while read line; do
-    fstab-decode umount -f $line
+    fstab-decode $UMOUNT -f $line
 done
 
 if [ -x /sbin/halt.local ]; then
diff --git a/rc.d/init.d/network b/rc.d/init.d/network
index b1b15592..a72a92f1 100755
--- a/rc.d/init.d/network
+++ b/rc.d/init.d/network
@@ -168,7 +168,7 @@ case "$1" in
   stop)
   	# Don't shut the network down if root is on NFS or a network
 	# block device.
-        rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $3; }}' /etc/mtab)
+        rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/" && $3 != "rootfs") { print $3; }}' /proc/mounts)
         rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' /etc/mtab)
 	
 	if [[ "$rootfs" =~ ^nfs ]] || [[ "$rootopts" =~ "_netdev|_rnetdev" ]] ; then