github ubuntu doesnt support testing python2 anymore

add ubuntu 22 support

test python 2 in ubuntu 20

.github/ISSUE_TEMPLATE/issue.md

@@ -0,0 +1,11 @@
+---
+name: Issue
+about: 'Use this if you have issues or feature requests'
+
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+(Please add the commandline that you use to the issue. Also at least add the output of --verbose. Sometimes it helps if you add the output of --debug-output instead, but its huge, so use an attachment for that.)

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "python" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/codeql-analysis.yml

@@ -17,8 +17,8 @@ on:
   pull_request:
     # The branches below must be a subset of the branches above
     branches: [ master ]
-  schedule:
+#  schedule:
-    - cron: '26 23 * * 3'
+#    - cron: '26 23 * * 3'
 
 jobs:
   analyze:
@@ -40,9 +40,10 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v2
 
+
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -53,7 +54,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -67,4 +68,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/regression.yml

@@ -6,15 +6,12 @@ on: ["push", "pull_request"]
 
 
 jobs:
-
+  ubuntu22:
-  ubuntu20:
+    runs-on: ubuntu-22.04
-    runs-on: ubuntu-20.04
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3.5.0
-
-
 
       - name: Prepare
         run: sudo apt update && sudo apt install zfsutils-linux lzop pigz zstd gzip xz-utils lz4 mbuffer && sudo -H pip3 install coverage unittest2 mock==3.0.5 coveralls
@@ -29,17 +26,15 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: coveralls --service=github || true
 
-  ubuntu18:
+  ubuntu20:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3.5.0
-
-
 
       - name: Prepare
-        run: sudo apt update && sudo apt install zfsutils-linux python3-setuptools lzop pigz zstd gzip xz-utils liblz4-tool mbuffer && sudo -H pip3 install coverage unittest2 mock==3.0.5 coveralls
+        run: sudo apt update && sudo apt install zfsutils-linux lzop pigz zstd gzip xz-utils lz4 mbuffer && sudo -H pip3 install coverage unittest2 mock==3.0.5 coveralls
 
 
       - name: Regression test
@@ -51,26 +46,3 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: coveralls --service=github || true
 
-  ubuntu18_python2:
-    runs-on: ubuntu-18.04
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2.3.4
-
-      - name: Set up Python 2.x
-        uses: actions/setup-python@v2
-        with:
-          python-version: '2.x'
-
-      - name: Prepare
-        run: sudo apt update && sudo apt install zfsutils-linux python-setuptools lzop pigz zstd gzip xz-utils liblz4-tool mbuffer && sudo -H pip install coverage unittest2 mock==3.0.5 coveralls colorama
-
-      - name: Regression test
-        run: sudo -E ./tests/run_tests
-
-      - name: Coveralls
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: coveralls --service=github || true

README.md

@@ -14,14 +14,14 @@ You can select what to backup by setting a custom `ZFS property`. This makes it
 
 Other settings are just specified on the commandline: Simply setup and test your zfs-autobackup command and  fix all the issues you might encounter. When you're done you can just copy/paste your command to a cron or script.
 
-Since it's using ZFS commands, you can see what it's actually doing by specifying `--debug`. This also helps a lot if you run into some strange problem or error. You can just copy-paste the command that fails and play around with it on the commandline. (something I missed in other tools)
+Since it's using ZFS commands, you can see what it's actually doing by specifying `--debug`. This also helps a lot if you run into some strange problem or errors. You can just copy-paste the command that fails and play around with it on the commandline. (something I missed in other tools)
 
 An important feature that's missing from other tools is a reliable `--test` option: This allows you to see what zfs-autobackup will do and tune your parameters. It will do everything, except make changes to your system.
 
 ## Features
 
 * Works across operating systems: Tested with **Linux**, **FreeBSD/FreeNAS** and **SmartOS**.
-* Low learning curve: no complex daemons or services, no additional software or networking needed. (Only read this page)   
+* Low learning curve: no complex daemons or services, no additional software or networking needed. 
 * Plays nicely with existing replication systems. (Like Proxmox HA)
 * Automatically selects filesystems to backup by looking at a simple ZFS property. 
 * Creates consistent snapshots. (takes all snapshots at once, atomicly.)
@@ -31,6 +31,7 @@ An important feature that's missing from other tools is a reliable `--test` opti
   * "pull" remote data from a server via SSH and backup it locally.
   * "pull+push": Zero trust between source and target.
 * Can be scheduled via simple cronjob or run directly from commandline.
+* Also supports complex backup geometries.
 * ZFS encryption support: Can decrypt / encrypt or even re-encrypt datasets during transfer.
 * Supports sending with compression. (Using pigz, zstd etc)
 * IO buffering to speed up transfer.
@@ -44,7 +45,8 @@ An important feature that's missing from other tools is a reliable `--test` opti
 * Automatic resuming of failed transfers.
 * Easy migration from other zfs backup systems to zfs-autobackup.
 * Gracefully handles datasets that no longer exist on source.
-* Complete and clean logging. 
+* Complete and clean logging.
+* All code is regression tested against actual ZFS environments.
 * Easy installation:
   * Just install zfs-autobackup via pip.
   * Only needs to be installed on one side.
@@ -60,3 +62,4 @@ Please look at our wiki to [Get started](https://github.com/psy0rz/zfs_autobacku
 This project was sponsorred by:
 
 * JetBrains (Provided me with a license for their whole professional product line, https://www.jetbrains.com/pycharm/ )
+* [DatuX](https://www.datux.nl) 

scripts/enctest

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+#NOTE: usually the speed is the same, but the cpu usage is much higher for ccm
+
+set -e
+
+D=/enctest123
+DS=rpool$D
+
+echo sdflsakjfklsjfsda > key.txt
+
+dd if=/dev/urandom of=dump.bin bs=1M count=10000
+
+#readcache
+cat dump.bin > /dev/null
+
+zfs destroy $DS || true
+
+zfs create $DS
+
+echo Unencrypted:
+sync
+time ( cp dump.bin $D/dump.bin;  sync )
+
+
+for E in aes-128-ccm aes-192-ccm aes-256-ccm aes-128-gcm aes-192-gcm aes-256-gcm; do
+ zfs destroy $DS
+ zfs create -o encryption=$E -o keylocation=file://`pwd`/key.txt -o keyformat=passphrase $DS
+ echo $E
+ sync
+ time ( cp dump.bin $D/dump.bin;  sync )
+done
+

tests/basetest.py

@@ -2,6 +2,15 @@
 # To run tests as non-root, use this hack:
 # chmod 4755 /usr/sbin/zpool /usr/sbin/zfs
 
+import sys
+
+#dirty hack for this error:
+#AttributeError: module 'collections' has no attribute 'MutableMapping'
+
+if sys.version_info.major == 3 and sys.version_info.minor >= 10:
+    import collections
+    setattr(collections, "MutableMapping", collections.abc.MutableMapping)
+
 import subprocess
 import random
 

tests/test_destroymissing.py

@@ -117,7 +117,7 @@ class TestZfsNode(unittest2.TestCase):
 
                 print(buf.getvalue())
                 #on second run it sees the dangling ex-parent but doesnt know what to do with it (since it has no own snapshot)
-                self.assertIn("test_source1: Destroy missing: has no snapshots made by us.", buf.getvalue())
+                self.assertIn("test_source1: Destroy missing: has no snapshots made by us", buf.getvalue())
 
 
 

tests/test_sendrecvpipes.py

@@ -2,87 +2,146 @@ import zfs_autobackup.compressors
 from basetest import *
 import time
 
+
 class TestSendRecvPipes(unittest2.TestCase):
     """test input/output pipes for zfs send and recv"""
 
     def setUp(self):
         prepare_zpools()
-        self.longMessage=True
+        self.longMessage = True
-
-
 
     def test_send_basics(self):
         """send basics (remote/local send pipe)"""
 
-
         with self.subTest("local local pipe"):
             with patch('time.strftime', return_value="test-20101111000000"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--send-pipe=dd bs=1M",  "--recv-pipe=dd bs=2M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--send-pipe=dd bs=1M", "--recv-pipe=dd bs=2M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("remote local pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000001"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--ssh-source=localhost", "--send-pipe=dd bs=1M",  "--recv-pipe=dd bs=2M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--ssh-source=localhost", "--send-pipe=dd bs=1M", "--recv-pipe=dd bs=2M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("local remote pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000002"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1",  "--exclude-received", "--no-holds", "--no-progress", "--ssh-target=localhost", "--send-pipe=dd bs=1M",  "--recv-pipe=dd bs=2M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--ssh-target=localhost", "--send-pipe=dd bs=1M", "--recv-pipe=dd bs=2M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("remote remote pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000003"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1",  "--exclude-received", "--no-holds", "--no-progress", "--ssh-source=localhost", "--ssh-target=localhost", "--send-pipe=dd bs=1M",  "--recv-pipe=dd bs=2M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--ssh-source=localhost", "--ssh-target=localhost", "--send-pipe=dd bs=1M",
+                     "--recv-pipe=dd bs=2M"]).run())
+
+        r = shelltest("zfs list -H -o name -r -t all test_target1")
+        self.assertMultiLineEqual(r, """
+test_target1
+test_target1/test_source1
+test_target1/test_source1/fs1
+test_target1/test_source1/fs1@test-20101111000000
+test_target1/test_source1/fs1@test-20101111000001
+test_target1/test_source1/fs1@test-20101111000002
+test_target1/test_source1/fs1@test-20101111000003
+test_target1/test_source1/fs1/sub
+test_target1/test_source1/fs1/sub@test-20101111000000
+test_target1/test_source1/fs1/sub@test-20101111000001
+test_target1/test_source1/fs1/sub@test-20101111000002
+test_target1/test_source1/fs1/sub@test-20101111000003
+test_target1/test_source2
+test_target1/test_source2/fs2
+test_target1/test_source2/fs2/sub
+test_target1/test_source2/fs2/sub@test-20101111000000
+test_target1/test_source2/fs2/sub@test-20101111000001
+test_target1/test_source2/fs2/sub@test-20101111000002
+test_target1/test_source2/fs2/sub@test-20101111000003
+""")
 
     def test_compress(self):
         """send basics (remote/local send pipe)"""
 
         for compress in zfs_autobackup.compressors.COMPRESS_CMDS.keys():
-
+            with self.subTest("compress " + compress):
-            with self.subTest("compress "+compress):
                 with patch('time.strftime', return_value="test-20101111000000"):
-                    self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--compress="+compress]).run())
+                    self.assertFalse(ZfsAutobackup(
+                        ["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--verbose",
+                         "--compress=" + compress]).run())
 
                 shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
     def test_buffer(self):
         """test different buffer configurations"""
 
-
         with self.subTest("local local pipe"):
             with patch('time.strftime', return_value="test-20101111000000"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--buffer=1M" ]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--buffer=1M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("remote local pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000001"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--ssh-source=localhost", "--buffer=1M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--verbose", "--exclude-received", "--no-holds",
+                     "--no-progress", "--ssh-source=localhost", "--buffer=1M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("local remote pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000002"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1",  "--exclude-received", "--no-holds", "--no-progress", "--ssh-target=localhost", "--buffer=1M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--ssh-target=localhost", "--buffer=1M"]).run())
 
             shelltest("zfs destroy -r test_target1/test_source1/fs1/sub")
 
         with self.subTest("remote remote pipe"):
-            with patch('time.strftime', return_value="test-20101111000000"):
+            with patch('time.strftime', return_value="test-20101111000003"):
-                self.assertFalse(ZfsAutobackup(["test", "test_target1",  "--exclude-received", "--no-holds", "--no-progress", "--ssh-source=localhost", "--ssh-target=localhost", "--buffer=1M"]).run())
+                self.assertFalse(ZfsAutobackup(
+                    ["test", "test_target1", "--allow-empty", "--exclude-received", "--no-holds", "--no-progress",
+                     "--ssh-source=localhost", "--ssh-target=localhost", "--buffer=1M"]).run())
+
+        r = shelltest("zfs list -H -o name -r -t all test_target1")
+        self.assertMultiLineEqual(r, """
+test_target1
+test_target1/test_source1
+test_target1/test_source1/fs1
+test_target1/test_source1/fs1@test-20101111000000
+test_target1/test_source1/fs1@test-20101111000001
+test_target1/test_source1/fs1@test-20101111000002
+test_target1/test_source1/fs1@test-20101111000003
+test_target1/test_source1/fs1/sub
+test_target1/test_source1/fs1/sub@test-20101111000000
+test_target1/test_source1/fs1/sub@test-20101111000001
+test_target1/test_source1/fs1/sub@test-20101111000002
+test_target1/test_source1/fs1/sub@test-20101111000003
+test_target1/test_source2
+test_target1/test_source2/fs2
+test_target1/test_source2/fs2/sub
+test_target1/test_source2/fs2/sub@test-20101111000000
+test_target1/test_source2/fs2/sub@test-20101111000001
+test_target1/test_source2/fs2/sub@test-20101111000002
+test_target1/test_source2/fs2/sub@test-20101111000003
+""")
 
     def test_rate(self):
         """test rate limit"""
 
-
+        start = time.time()
-        start=time.time()
         with patch('time.strftime', return_value="test-20101111000000"):
-            self.assertFalse(ZfsAutobackup(["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--rate=50k" ]).run())
+            self.assertFalse(ZfsAutobackup(
-
+                ["test", "test_target1", "--exclude-received", "--no-holds", "--no-progress", "--rate=50k"]).run())
-        #not a great way of verifying but it works.
-        self.assertGreater(time.time()-start, 5)
-
 
+        # not a great way of verifying but it works.
+        self.assertGreater(time.time() - start, 5)

tests/test_zfsautobackup31.py

@@ -95,3 +95,25 @@ test_target1/fs1@test-20101111000000
 test_target1/fs1/sub@test-20101111000000
 test_target1/fs2/sub@test-20101111000000
 """)
+
+
+    def test_exclude_unchanged(self):
+
+        shelltest("zfs snapshot -r test_source1@somesnapshot")
+
+        with patch('time.strftime', return_value="test-20101111000000"):
+            self.assertFalse(
+                ZfsAutobackup(
+                    "test test_target1 --verbose --allow-empty --exclude-unchanged=1".split(" ")).run())
+
+        #everything should be excluded, but should not return an error (see #190)
+        with patch('time.strftime', return_value="test-20101111000001"):
+            self.assertFalse(
+                ZfsAutobackup(
+                    "test test_target1 --verbose --allow-empty --exclude-unchanged=1".split(" ")).run())
+
+        r = shelltest("zfs list -H -o name -r -t snapshot test_target1")
+        self.assertMultiLineEqual(r, """
+test_target1/test_source2/fs2/sub@test-20101111000000
+""")
+

tests/test_zfsnode.py

@@ -15,7 +15,9 @@ class TestZfsNode(unittest2.TestCase):
         node = ZfsNode(utc=False, snapshot_time_format="test-%Y%m%d%H%M%S", hold_name="zfs_autobackup:test", logger=logger, description=description)
 
         with self.subTest("first snapshot"):
-            node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test",exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=200000), "test-20101111000001", 100000)
+            (selected_datasets, excluded_datasets)=node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False,
+                                   exclude_unchanged=0)
+            node.consistent_snapshot(selected_datasets, "test-20101111000001", 100000)
             r = shelltest("zfs list -H -o name -r -t all " + TEST_POOLS)
             self.assertEqual(r, """
 test_source1
@@ -33,7 +35,9 @@ test_target1
 """)
 
         with self.subTest("second snapshot, no changes, no snapshot"):
-            node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test",exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=200000), "test-20101111000002", 1)
+            (selected_datasets, excluded_datasets)=node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False,
+                                   exclude_unchanged=0)
+            node.consistent_snapshot(selected_datasets, "test-20101111000002", 1)
             r = shelltest("zfs list -H -o name -r -t all " + TEST_POOLS)
             self.assertEqual(r, """
 test_source1
@@ -51,7 +55,8 @@ test_target1
 """)
 
         with self.subTest("second snapshot, no changes, empty snapshot"):
-            node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=200000), "test-20101111000002", 0)
+            (selected_datasets, excluded_datasets) =node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=0)
+            node.consistent_snapshot(selected_datasets, "test-20101111000002", 0)
             r = shelltest("zfs list -H -o name -r -t all " + TEST_POOLS)
             self.assertEqual(r, """
 test_source1
@@ -79,7 +84,8 @@ test_target1
         with self.subTest("Test if all cmds are executed correctly (no failures)"):
             with OutputIO() as buf:
                 with redirect_stdout(buf):
-                    node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=1), "test-1",
+                    (selected_datasets, excluded_datasets) =node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=0)
+                    node.consistent_snapshot(selected_datasets, "test-1",
                                              0,
                                              pre_snapshot_cmds=["echo pre1", "echo pre2"],
                                              post_snapshot_cmds=["echo post1 >&2", "echo post2 >&2"]
@@ -95,7 +101,8 @@ test_target1
             with OutputIO() as buf:
                 with redirect_stdout(buf):
                     with self.assertRaises(ExecuteError):
-                        node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=1), "test-1",
+                        (selected_datasets, excluded_datasets) =node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=0)
+                        node.consistent_snapshot(selected_datasets, "test-1",
                                                  0,
                                                  pre_snapshot_cmds=["echo pre1", "false", "echo pre2"],
                                                  post_snapshot_cmds=["echo post1", "false", "echo post2"]
@@ -112,7 +119,8 @@ test_target1
                 with redirect_stdout(buf):
                     with self.assertRaises(ExecuteError):
                         #same snapshot name as before so it fails
-                        node.consistent_snapshot(node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=False, min_change=1), "test-1",
+                        (selected_datasets, excluded_datasets) =node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=0)
+                        node.consistent_snapshot(selected_datasets, "test-1",
                                                  0,
                                                  pre_snapshot_cmds=["echo pre1", "echo pre2"],
                                                  post_snapshot_cmds=["echo post1", "echo post2"]
@@ -158,7 +166,9 @@ test_target1
         logger = LogStub()
         description = "[Source]"
         node = ZfsNode(utc=False, snapshot_time_format="test-%Y%m%d%H%M%S", hold_name="zfs_autobackup:test", logger=logger, description=description)
-        s = pformat(node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False, exclude_unchanged=True, min_change=1))
+        (selected_datasets, excluded_datasets)=node.selected_datasets(property_name="autobackup:test", exclude_paths=[], exclude_received=False,
+                               exclude_unchanged=1)
+        s = pformat(selected_datasets)
         print(s)
 
         # basics

zfs_autobackup/CliBase.py

@@ -10,7 +10,7 @@ class CliBase(object):
     Overridden in subclasses that add stuff for the specific programs."""
 
     # also used by setup.py
-    VERSION = "3.2-beta1"
+    VERSION = "3.2"
     HEADER = "{} v{} - (c)2022 E.H.Eefting (edwin@datux.nl)".format(os.path.basename(sys.argv[0]), VERSION)
 
     def __init__(self, argv, print_arguments=True):

zfs_autobackup/ZfsAuto.py

@@ -98,8 +98,8 @@ class ZfsAuto(CliBase):
 
         group=parser.add_argument_group("Selection options")
         group.add_argument('--ignore-replicated', action='store_true', help=argparse.SUPPRESS)
-        group.add_argument('--exclude-unchanged', action='store_true',
+        group.add_argument('--exclude-unchanged', metavar='BYTES', default=0, type=int,
-                            help='Exclude datasets that have no changes since any last snapshot. (Useful in combination with proxmox HA replication)')
+                            help='Exclude datasets that have less than BYTES data changed since any last snapshot. (Use with proxmox HA replication)')
         group.add_argument('--exclude-received', action='store_true',
                             help='Exclude datasets that have the origin of their autobackup: property as "received". '
                                  'This can avoid recursive replication between two backup partners.')

zfs_autobackup/ZfsAutobackup.py

@@ -37,11 +37,11 @@ class ZfsAutobackup(ZfsAuto):
             args.rollback = True
 
         if args.resume:
-            self.warning("The --resume option isn't needed anymore (its autodetected now)")
+            self.warning("The --resume option isn't needed anymore (it's autodetected now)")
 
         if args.raw:
             self.warning(
-                "The --raw option isn't needed anymore (its autodetected now). Also see --encrypt and --decrypt.")
+                "The --raw option isn't needed anymore (it's autodetected now). Also see --encrypt and --decrypt.")
 
         if args.compress and args.ssh_source is None and args.ssh_target is None:
             self.warning("Using compression, but transfer is local.")
@@ -67,7 +67,7 @@ class ZfsAutobackup(ZfsAuto):
                            help='Only create snapshot if enough bytes are changed. (default %('
                                 'default)s)')
         group.add_argument('--allow-empty', action='store_true',
-                           help='If nothing has changed, still create empty snapshots. (Faster. Same as --min-change=0)')
+                           help='If nothing has changed, still create empty snapshots. (Same as --min-change=0)')
         group.add_argument('--other-snapshots', action='store_true',
                            help='Send over other snapshots as well, not just the ones created by this tool.')
         group.add_argument('--set-snapshot-properties', metavar='PROPERTY=VALUE,...', type=str,
@@ -76,11 +76,11 @@ class ZfsAutobackup(ZfsAuto):
 
         group = parser.add_argument_group("Transfer options")
         group.add_argument('--no-send', action='store_true',
-                           help='Don\'t transfer snapshots (useful for cleanups, or if you want a serperate send-cronjob)')
+                           help='Don\'t transfer snapshots (useful for cleanups, or if you want a separate send-cronjob)')
         group.add_argument('--no-holds', action='store_true',
                            help='Don\'t hold snapshots. (Faster. Allows you to destroy common snapshot.)')
         group.add_argument('--clear-refreservation', action='store_true',
-                           help='Filter "refreservation" property. (recommended, safes space. same as '
+                           help='Filter "refreservation" property. (recommended, saves space. same as '
                                 '--filter-properties refreservation)')
         group.add_argument('--clear-mountpoint', action='store_true',
                            help='Set property canmount=noauto for new datasets. (recommended, prevents mount '
@@ -95,7 +95,7 @@ class ZfsAutobackup(ZfsAuto):
                            help='Rollback changes to the latest target snapshot before starting. (normally you can '
                                 'prevent changes by setting the readonly property on the target_path to on)')
         group.add_argument('--force', '-F', action='store_true',
-                           help='Use zfs -F option to force overwrite/rollback. (Usefull with --strip-path=1, but use with care)')
+                           help='Use zfs -F option to force overwrite/rollback. (Useful with --strip-path=1, but use with care)')
         group.add_argument('--destroy-incompatible', action='store_true',
                            help='Destroy incompatible snapshots on target. Use with care! (implies --rollback)')
         group.add_argument('--ignore-transfer-errors', action='store_true',
@@ -110,13 +110,13 @@ class ZfsAutobackup(ZfsAuto):
         group.add_argument('--zfs-compressed', action='store_true',
                            help='Transfer blocks that already have zfs-compression as-is.')
 
-        group = parser.add_argument_group("ZFS send/recv pipes")
+        group = parser.add_argument_group("Data transfer options")
         group.add_argument('--compress', metavar='TYPE', default=None, nargs='?', const='zstd-fast',
                            choices=compressors.choices(),
                            help='Use compression during transfer, defaults to zstd-fast if TYPE is not specified. ({})'.format(
                                ", ".join(compressors.choices())))
         group.add_argument('--rate', metavar='DATARATE', default=None,
-                           help='Limit data transfer rate (e.g. 128K. requires mbuffer.)')
+                           help='Limit data transfer rate in Bytes/sec (e.g. 128K. requires mbuffer.)')
         group.add_argument('--buffer', metavar='SIZE', default=None,
                            help='Add zfs send and recv buffers to smooth out IO bursts. (e.g. 128M. requires mbuffer)')
         group.add_argument('--send-pipe', metavar="COMMAND", default=[], action='append',
@@ -189,7 +189,7 @@ class ZfsAutobackup(ZfsAuto):
                         dataset.debug("Destroy missing: ignoring")
                     else:
                         dataset.verbose(
-                            "Destroy missing: has no snapshots made by us. (please destroy manually)")
+                            "Destroy missing: has no snapshots made by us (please destroy manually).")
                 else:
                     # past the deadline?
                     deadline_ttl = ThinnerRule("0s" + self.args.destroy_missing).ttl
@@ -443,12 +443,11 @@ class ZfsAutobackup(ZfsAuto):
 
             ################# select source datasets
             self.set_title("Selecting")
-            source_datasets = source_node.selected_datasets(property_name=self.property_name,
+            ( source_datasets, excluded_datasets) = source_node.selected_datasets(property_name=self.property_name,
                                                             exclude_received=self.args.exclude_received,
                                                             exclude_paths=self.exclude_paths,
-                                                            exclude_unchanged=self.args.exclude_unchanged,
+                                                            exclude_unchanged=self.args.exclude_unchanged)
-                                                            min_change=self.args.min_change)
+            if not source_datasets and not excluded_datasets:
-            if not source_datasets:
                 self.print_error_sources()
                 return 255
 

zfs_autobackup/ZfsAutoverify.py

@@ -239,12 +239,11 @@ class ZfsAutoverify(ZfsAuto):
 
             ################# select source datasets
             self.set_title("Selecting")
-            source_datasets = source_node.selected_datasets(property_name=self.property_name,
+            ( source_datasets, excluded_datasets) = source_node.selected_datasets(property_name=self.property_name,
                                                             exclude_received=self.args.exclude_received,
                                                             exclude_paths=self.exclude_paths,
-                                                            exclude_unchanged=self.args.exclude_unchanged,
+                                                            exclude_unchanged=self.args.exclude_unchanged)
-                                                            min_change=0)
+            if not source_datasets and not excluded_datasets:
-            if not source_datasets:
                 self.print_error_sources()
                 return 255
 
@@ -307,6 +306,7 @@ class ZfsAutoverify(ZfsAuto):
 def cli():
     import sys
 
+    raise(Exception("This program is incomplete, dont use it yet."))
     signal(SIGPIPE, sigpipe_handler)
     failed = ZfsAutoverify(sys.argv[1:], False).run()
     sys.exit(min(failed,255))

zfs_autobackup/ZfsCheck.py

@@ -106,7 +106,7 @@ class ZfsCheck(CliBase):
 
             time.sleep(1)
 
-        raise (Exception("Timeout while waiting for /dev entry to appear. (looking in: {})".format(locations)))
+        raise (Exception("Timeout while waiting for /dev entry to appear. (looking in: {}). Hint: did you forget to load the encryption key?".format(locations)))
 
     def cleanup_zfs_volume(self, snapshot):
         """destroys temporary volume snapshot"""

zfs_autobackup/ZfsDataset.py

@@ -118,7 +118,7 @@ class ZfsDataset:
         """true if this dataset is a snapshot"""
         return self.name.find("@") != -1
 
-    def is_selected(self, value, source, inherited, exclude_received, exclude_paths, exclude_unchanged, min_change):
+    def is_selected(self, value, source, inherited, exclude_received, exclude_paths, exclude_unchanged):
         """determine if dataset should be selected for backup (called from
         ZfsNode)
 
@@ -128,12 +128,15 @@ class ZfsDataset:
             :type source: str
             :type inherited: bool
             :type exclude_received: bool
-            :type exclude_unchanged: bool
+            :type exclude_unchanged: int
-            :type min_change: bool
 
             :param value: Value of the zfs property ("false"/"true"/"child"/parent/"-")
             :param source: Source of the zfs property ("local"/"received", "-")
             :param inherited: True of the value/source was inherited from a higher dataset.
+
+        Returns: True : Selected
+                 False: Excluded
+                 None: No property found
         """
 
         # sanity checks
@@ -149,7 +152,7 @@ class ZfsDataset:
 
         # non specified, ignore
         if value == "-":
-            return False
+            return None
 
         # only select childs of this dataset, ignore
         if value == "child" and not inherited:
@@ -179,8 +182,8 @@ class ZfsDataset:
                 self.verbose("Excluded (dataset already received)")
                 return False
 
-        if exclude_unchanged and not self.is_changed(min_change):
+        if not self.is_changed(exclude_unchanged):
-            self.verbose("Excluded (unchanged since last snapshot)")
+            self.verbose("Excluded (by --exclude-unchanged)")
             return False
 
         self.verbose("Selected")
@@ -575,13 +578,14 @@ class ZfsDataset:
 
         # all kind of performance options:
         if 'large_blocks' in features and "-L" in self.zfs_node.supported_send_options:
-            cmd.append("--large-block")  # large block support (only if recordsize>128k which is seldomly used)
+            # large block support (only if recordsize>128k which is seldomly used)
+            cmd.append("-L") # --large-block
 
         if write_embedded and 'embedded_data' in features and "-e" in self.zfs_node.supported_send_options:
-            cmd.append("--embed")  # WRITE_EMBEDDED, more compact stream
+            cmd.append("-e")  # --embed; WRITE_EMBEDDED, more compact stream
 
         if zfs_compressed and "-c" in self.zfs_node.supported_send_options:
-            cmd.append("--compressed")  # use compressed WRITE records
+            cmd.append("-c")  # --compressed; use compressed WRITE records
 
         # raw? (send over encrypted data in its original encrypted form without decrypting)
         if raw:
@@ -589,8 +593,8 @@ class ZfsDataset:
 
         # progress output
         if show_progress:
-            cmd.append("--verbose")
+            cmd.append("-v") # --verbose
-            cmd.append("--parsable")
+            cmd.append("-P") # --parsable
 
         # resume a previous send? (don't need more parameters in that case)
         if resume_token:
@@ -599,7 +603,7 @@ class ZfsDataset:
         else:
             # send properties
             if send_properties:
-                cmd.append("--props")
+                cmd.append("-p") # --props
 
             # incremental?
             if prev_snapshot:

zfs_autobackup/ZfsNode.py

@@ -235,10 +235,10 @@ class ZfsNode(ExecuteNode):
                 except Exception as e:
                     pass
 
-    def selected_datasets(self, property_name, exclude_received, exclude_paths, exclude_unchanged, min_change):
+    def selected_datasets(self, property_name, exclude_received, exclude_paths, exclude_unchanged):
         """determine filesystems that should be backed up by looking at the special autobackup-property, systemwide
 
-           returns: list of ZfsDataset
+           returns: ( list of selected ZfsDataset, list of excluded ZfsDataset)
         """
 
         self.debug("Getting selected datasets")
@@ -249,8 +249,10 @@ class ZfsNode(ExecuteNode):
             property_name
         ])
 
+
         # The returnlist of selected ZfsDataset's:
         selected_filesystems = []
+        excluded_filesystems = []
 
         # list of sources, used to resolve inherited sources
         sources = {}
@@ -270,9 +272,14 @@ class ZfsNode(ExecuteNode):
                 source = raw_source
 
             # determine it
-            if dataset.is_selected(value=value, source=source, inherited=inherited, exclude_received=exclude_received,
+            selected=dataset.is_selected(value=value, source=source, inherited=inherited, exclude_received=exclude_received,
-                                   exclude_paths=exclude_paths, exclude_unchanged=exclude_unchanged,
+                                   exclude_paths=exclude_paths, exclude_unchanged=exclude_unchanged)
-                                   min_change=min_change):
-                selected_filesystems.append(dataset)
 
-        return selected_filesystems
+            if selected==True:
+                selected_filesystems.append(dataset)
+            elif selected==False:
+                excluded_filesystems.append(dataset)
+            #returns None when no property is set.
+
+
+        return ( selected_filesystems, excluded_filesystems)