From: chara <chara@cloud9p.org>
Subject: rc: skip rootdisk_nodes if we are running diskless
To: tech@openbsd.org
Date: Wed, 2 Sep 2026 22:58:24 +0330

Hi there,
i've been trying to run my systems without a disk recently,
while trying to boot them i've been seeing this message pop up during boot:

stat: 10.0.0.2:/home/chara/nfs/d510/: No such file or directory
stat: 10.0.0.2:/home/chara/nfs/d510/: No such file or directory
usage: mknod [-m mode] name b|c major minor
       mknod [-m mode] name p
usage: mknod [-m mode] name b|c major minor
       mknod [-m mode] name p

turns out thats related to changes to rc for max partition change.
since the logic is related to setups with a disk, perhaps we can skip it
if we are booting diskless.

ok?


diff /home/chara/nfs/src
path + /home/chara/nfs/src
commit - f35f7ce0ee20f97167b4d667c39c6032da84b613
blob - 9b30d8edac999f03d5f2599d74878a5f6f7430c1
file + etc/rc
--- etc/rc
+++ etc/rc
@@ -303,7 +303,11 @@ run_upgrade_script() {
 #   cd /dev && ./MAKEDEV redodisks
 rootdisk_nodes() {
 	if [ $(sysctl -n kern.maxpartitions) = 16 ]; then
-		_rootdev=$(mount | grep ' / ' | cut -d' ' -f1)
+		# Find and use root device if we are not booting from NFS
+		_rootdev=$(mount | grep ' / ' | grep -v ':' | cut -d' ' -f1)
+		if [ -z $_rootdev ]; then
+			return
+		fi
 		_maj=$(stat -f "%Hr" $_rootdev)
 		_omin=$(stat -f "%Lr" $_rootdev)
 		_min=$((_omin / 16 * 64))

-- 
chara <chara@cloud9p.org>