From 29d45d92b526e4ea9bf7cbd7f3adc7957f4e543d Mon Sep 17 00:00:00 2001
From: "Dustin C. Hatch" <dustin@hatch.name>
Date: Mon, 1 Apr 2019 13:57:25 -0500
Subject: [PATCH] fmos/make writable: Mount tmpfs overlay on /usr

I use this command to mount a tmpfs filesystem on top of `/usr` using
OverlayFS to temporarily make the FMOS immutable filesystem mutable.
This is particularly useful for testing changes without rebuilding the
image.
---
 fmos/make writable | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 fmos/make writable

diff --git a/fmos/make writable b/fmos/make writable
new file mode 100644
index 0000000..1c95163
--- /dev/null
+++ b/fmos/make writable	
@@ -0,0 +1 @@
+mkdir -p /run/fmos/usr/{.work,rw} && mount -t overlay -o lowerdir=/usr,upperdir=/run/fmos/usr/rw,workdir=/run/fmos/usr/.work overlay /usr
\ No newline at end of file