cut the ramdisk size

exclude.list

@@ -0,0 +1,20 @@
+/dev/*
+/run/*
+/sys/*
+/proc/*
+/tmp/*
+/var/tmp/*
+/var/lib/apt/*
+/var/lib/dpkg/*
+/var/run/*
+/var/cache/*
+/boot/*
+/usr/lib/modules/*
+/usr/lib/python*
+/usr/lib/*-linux-gnu/perl*
+/usr/share/GeoIP*
+/usr/share/man*
+/usr/share/i18n*
+/usr/share/perl*
+/usr/share/doc*
+/usr/share/locale*

switch_root.sh

@@ -7,23 +7,14 @@ mkdir /tmp/sys
 sudo mount /dev/zram0 /tmp/sys
 sudo tar -cpSf - \
     --acls --xattrs --selinux \
-    --exclude '/dev/*' \
+    --exclude-from /vagrant/exclude.list \
-    --exclude '/run/*' \
-    --exclude '/sys/*' \
-    --exclude '/proc/*' \
-    --exclude '/tmp/*' \
-    --exclude '/var/tmp/*' \
-    --exclude '/var/lib/apt/*' \
-    --exclude '/var/lib/dpkg/*' \
-    --exclude '/var/run/*' \
-    --exclude '/boot/*' \
     / |
     sudo tar -xvf - \
         --acls --xattrs --selinux \
         -C /tmp/sys
 sudo truncate -s0 /tmp/sys/etc/fstab
 sudo swapoff -a
-sudo mkdir /sysroot
+sudo mkdir -p /sysroot
 sudo mount --rbind /tmp/sys /sysroot
 sudo touch /etc/initrd-release