Move root filesystem from rootfs to tmpfs

kubernetes · Aug 19, 2019 · d821b07 · d821b07
1 parent 17dd510
commit d821b07
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/deploy/iso/minikube-iso/board/coreos/minikube/rootfs-overlay/init b/deploy/iso/minikube-iso/board/coreos/minikube/rootfs-overlay/init
@@ -0,0 +1,11 @@
+#!/bin/sh
+mkdir /sysroot
+mount -t tmpfs -o size=90% tmpfs /sysroot
+tar -C / --exclude=sysroot -cf - . | tar -C /sysroot/ -xf -
+
+# devtmpfs does not get automounted for initramfs
+/bin/mount -t devtmpfs devtmpfs /sysroot/dev
+exec 0</sysroot/dev/console
+exec 1>/sysroot/dev/console
+exec 2>/sysroot/dev/console
+exec /sbin/switch_root /sysroot /sbin/init "$@"