From 0f1505325815b2e58cec78ed6ff08701db6cdc3c Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Thu, 19 Sep 2019 11:12:45 +0100
Subject: [PATCH] Handle partition size check when partition is nfs mount

---
 rpi-update | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/rpi-update b/rpi-update
index dd9910c..ded1b20 100755
--- a/rpi-update
+++ b/rpi-update
@@ -222,12 +222,13 @@ function check_partition {
 	local PARTSIZE=0
 	if command -v df > /dev/null 2>&1 ; then
 		local M=$(df -P ${BOOT_PATH} | awk 'END{print $1}')
-		if command -v lsblk > /dev/null 2>&1 ; then
-			PARTSIZE=$(lsblk -bno SIZE ${M})
+		if [[ $M == /dev/* ]]; then
+			if command -v lsblk > /dev/null 2>&1 ; then
+				PARTSIZE=$(lsblk -bno SIZE ${M})
+			fi
 		fi
 	fi
-	echo PARTSIZE:$PARTSIZE
-	if [ $PARTSIZE -lt $(( 256*1024*1024 )) ]; then
+	if [ $PARTSIZE -ne 0 ] && [ $PARTSIZE -lt $(( 256*1024*1024 )) ]; then
 		echo "Partition size $(( $PARTSIZE >> 20 ))M may not be sufficient for new Pi4 files"
 		echo "This could result in a system that will not boot."
 		echo "256M FAT partition is recommended. Ensure you have a backup if continuing."