From 962d6c8e3973e20c93b4d422473bccdbfa1747be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gero=20M=C3=BCller?= <post@geromueller.de>
Date: Sat, 15 Apr 2017 12:46:20 +1000
Subject: [PATCH] add systembackup

---
 systembackup | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100755 systembackup

diff --git a/systembackup b/systembackup
new file mode 100755
index 0000000..5eb4585
--- /dev/null
+++ b/systembackup
@@ -0,0 +1,102 @@
+#!/bin/bash
+
+# ----------------------------------------------------------------------------
+# FUNCTIONS
+# ----------------------------------------------------------------------------
+
+cleanup() {
+if [ "y" == "$MYSQL" ]; then
+  umount -f /var/lib/mysql-snapshot || true
+  lvremove -f /dev/vg0/mysql-snapshot || true
+fi
+}
+
+mount() {
+  echo "mounting /var/lib/mysql-snapshot..."
+  mkdir -p /var/lib/mysql-snapshot
+  /bin/mount /dev/vg0/mysql-snapshot /var/lib/mysql-snapshot
+  echo "mounted /var/lib/mysql-snapshot."
+}
+
+lock() {
+  echo "locking database..."
+  mysql  << EOF
+FLUSH TABLES;
+FLUSH TABLES WITH READ LOCK;
+system lvcreate --snapshot -n mysql-snapshot -L16G /dev/vg0/mysql
+UNLOCK TABLES;
+EOF
+  echo "database locked"
+}
+
+
+# ----------------------------------------------------------------------------
+# CONFIG
+# ----------------------------------------------------------------------------
+
+if [ ! -f /etc/systembackup.conf ]; then
+  echo "systembackup not configured"
+  exit 1
+fi
+
+source /etc/systembackup.conf
+
+if [ -z "$REPOSITORY" ]; then
+  echo "REPOSITORY not set"
+  exit 1
+fi
+
+if [ -z "$PASSPHRASE" ]; then
+  echo "PASSPHRASE not set"
+  exit 1
+fi
+
+
+# ----------------------------------------------------------------------------
+# SETUP
+# ----------------------------------------------------------------------------
+
+set -e
+trap cleanup SIGHUP SIGINT SIGTERM
+
+if [ "y" == "$MYSQL" ]; then
+  lock
+  mount
+fi
+
+
+# ----------------------------------------------------------------------------
+# BACKUP
+# ----------------------------------------------------------------------------
+
+BORG_PASSPHRASE=$PASSPHRASE /usr/bin/nice -n 19 /usr/bin/ionice -c2 -n7 borg create --stats -v \
+    $REPOSITORY::'{hostname}-{now:%Y-%m-%d-%H}'    \
+    / \
+    --compression lzma \
+    --exclude '/dev' \
+    --exclude '/proc' \
+    --exclude '/sys' \
+    --exclude '/tmp' \
+    --exclude '/run' \
+    --exclude '/var/run' \
+    --exclude '/mnt' \
+    --exclude '/media' \
+    --exclude 'lost+found' \
+    --exclude '/var/cache/apt/archives/' \
+    --exclude '/var/lib/lxcfs'
+    --exclude '/var/lib/mysql'
+
+
+# ----------------------------------------------------------------------------
+# PRUNE
+# ----------------------------------------------------------------------------
+
+BORG_PASSPHRASE=$PASSPHRASE /usr/bin/nice -n 19 /usr/bin/ionice -c2 -n7 borg prune -v --list $REPOSITORY --prefix '{hostname}-' \
+    --keep-hourly=6 --keep-daily=7 --keep-weekly=4 --keep-monthly=6
+
+
+# ----------------------------------------------------------------------------
+# CLEANUP
+# ----------------------------------------------------------------------------
+
+cleanup