From 1c4647fafc6d0a69016ec7302b97a503053f0e10 Mon Sep 17 00:00:00 2001
From: Anpleenko Alexander <avanpleenko@gmail.com>
Date: Sat, 29 Mar 2025 11:45:19 +0300
Subject: [PATCH] add docker-volume-snapshot

---
 docker-volume-snapshot | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100755 docker-volume-snapshot

diff --git a/docker-volume-snapshot b/docker-volume-snapshot
new file mode 100755
index 0000000..b327b6a
--- /dev/null
+++ b/docker-volume-snapshot
@@ -0,0 +1,42 @@
+#!/bin/bash
+set -e -o pipefail
+
+programname=`basename "$0"`
+
+display_usage() {
+    echo "usage: $programname (create|restore) source destination"
+    echo "  create         create snapshot file from docker volume"
+    echo "  restore        restore snapshot file to docker volume"
+    echo "  source         source path"
+    echo "  destination    destination path"
+    echo
+    echo "Tip: Supports tar's compression algorithms automatically"
+    echo "     based on the file extention, for example .tar.gz"
+    echo
+    echo "Examples:"
+    echo "docker-volume-snapshot create xyz_volume xyz_volume.tar"
+    echo "docker-volume-snapshot create xyz_volume xyz_volume.tar.gz"
+    echo "docker-volume-snapshot restore xyz_volume.tar xyz_volume"
+    echo "docker-volume-snapshot restore xyz_volume.tar.gz xyz_volume"
+}
+
+case "$1" in
+    "create")
+        if [[ -z "$2" || -z "$3" ]]; then display_usage; exit 1; fi
+        directory=`dirname "$3"`
+        if [ "$directory" == "." ]; then directory=$(pwd); fi
+        filename=`basename "$3"`
+        docker run --rm -v "$2:/source" -v "$directory:/dest" busybox tar cvaf "/dest/$filename" -C /source .
+        ;;
+    "restore")
+        if [[ -z "$2" || -z "$3" ]]; then display_usage; exit 1; fi
+        directory=`dirname "$2"`
+        if [ "$directory" == "." ]; then directory=$(pwd); fi
+        filename=`basename "$2"`
+        docker run --rm -v "$3:/dest" -v "$directory:/source" busybox tar xvf "/source/$filename" -C /dest
+        ;;
+    *)
+        display_usage
+        exit 1 # Command to come out of the program with status 1
+        ;;
+esac