X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=debian%2Flive-initramfs.init;h=07f707c581fbb6a68d0cadcf8c32d257c6785148;hb=f2a96ee75e6376f3674fbaf8a78b03c28e03c692;hp=4cf767a3d162906f2f030a5f08189ad48010d00a;hpb=76f26cf7153568668df8885ea3626bc6c37bfc31;p=live-boot-grml.git

diff --git a/debian/live-initramfs.init b/debian/live-initramfs.init
index 4cf767a..07f707c 100644
--- a/debian/live-initramfs.init
+++ b/debian/live-initramfs.init
@@ -85,7 +85,8 @@ device_is_USB_flash_drive()
 	[ "$(expr substr ${DEVICE} 1 2)" != "sd" ] && return 1
 
 	# check that the device is an USB device
-	if readlink /sys/block/${DEVICE}/device | grep -q usb
+	if readlink /sys/block/${DEVICE} | grep -q usb ||
+	   readlink /sys/block/${DEVICE}/device | grep -q usb # linux < 2.6.29
 	then
 		return 0
 	fi
@@ -95,14 +96,17 @@ device_is_USB_flash_drive()
 
 do_stop ()
 {
-	if [ ! -z "${ROOTSNAP}" ]
+	if ! grep -qs nopersistent /proc/cmdline && grep -qs persistent /proc/cmdline
 	then
-		${DO_SNAPSHOT} --resync-string="${ROOTSNAP}"
-	fi
+		if [ ! -z "${ROOTSNAP}" ]
+		then
+			${DO_SNAPSHOT} --resync-string="${ROOTSNAP}"
+		fi
 
-	if [ ! -z "${HOMESNAP}" ]
-	then
-		${DO_SNAPSHOT} --resync-string="${HOMESNAP}"
+		if [ ! -z "${HOMESNAP}" ]
+		then
+			${DO_SNAPSHOT} --resync-string="${HOMESNAP}"
+		fi
 	fi
 
 	# check for netboot
@@ -157,7 +161,7 @@ do_stop ()
 
 		stty sane < /dev/console
 
-		echo -n -e "\n\n${MESSAGE} and press ENTER to continue:" > /dev/console
+		printf "\n\n${MESSAGE} and press ENTER to continue:" > /dev/console
 
 		if [ -x /sbin/usplash_write ]
 		then