osbuilder: fix ubuntu initrd /dev/ttyS0 hang

Guest log is showing a hang on systemd getty start. Adding symlink for /dev/ttyS0 resolves issue. Fixes: kata-containers#4932 Signed-Off-By: Ryan Savino <[email protected]>
microsoft · Aug 26, 2022 · dc32c46 · dc32c46
1 parent cc5f91d
commit dc32c46
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/tools/osbuilder/rootfs-builder/rootfs.sh b/tools/osbuilder/rootfs-builder/rootfs.sh
@@ -520,6 +520,11 @@ EOF
 			chrony_conf_file="${ROOTFS_DIR}/etc/chrony/chrony.conf"
 			chrony_systemd_service="${ROOTFS_DIR}/lib/systemd/system/chrony.service"
 			;;
+		"ubuntu")
+			# Fix for #4932 - Boot hang at: "A start job is running for /dev/ttyS0"
+			mkdir -p "${ROOTFS_DIR}/etc/systemd/system/getty.target.wants"
+			ln -sf "/lib/systemd/system/[email protected]" "${ROOTFS_DIR}/etc/systemd/system/getty.target.wants/[email protected]"
+			;;
 		*)
 			chrony_conf_file="${ROOTFS_DIR}/etc/chrony.conf"
 			chrony_systemd_service="${ROOTFS_DIR}/usr/lib/systemd/system/chronyd.service"