From f8e5010dfe0aa6925646b2f766f97a16cb52a422 Mon Sep 17 00:00:00 2001
From: Mitch Riedstra <mitch@riedstra.us>
Date: Wed, 13 Mar 2019 19:28:33 -0400
Subject: Add a btrfs snapshotting script

---
 btrfs-snap.sh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 btrfs-snap.sh

(limited to 'btrfs-snap.sh')

diff --git a/btrfs-snap.sh b/btrfs-snap.sh
new file mode 100644
index 0000000..cc2e5a9
--- /dev/null
+++ b/btrfs-snap.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+set -x
+set -e
+timestamp() {
+	date +%m.%d.%y_%H.%M.%S
+}
+
+rootfs="glibc"
+snap="${rootfs}-snap"
+
+cd /ROOT
+
+if [ -e "$snap" ] ; then
+	btrfs sub del "$snap"
+fi
+
+if ! [ -e "bak" ] ; then
+	btrfs sub create "bak"
+fi
+
+btrfs sub snap -r "$rootfs" "bak/${rootfs}-$(timestamp)"
+btrfs sub snap "$rootfs" "$snap"
+sed -i.bak -e"s/subvol=${rootfs}/subvol=${snap}/g" "${snap}/etc/fstab"
-- 
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