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-rwxr-xr-xsystemd-zfs-partition-backup.sh117
-rw-r--r--systemd-zfs-partition-backup/AUR/PKGBUILD5
-rwxr-xr-xsystemd-zfs-partition-backup/AUR/getsha256sum.sh21
3 files changed, 90 insertions, 53 deletions
diff --git a/systemd-zfs-partition-backup.sh b/systemd-zfs-partition-backup.sh
index 91acdfc..e40c241 100755
--- a/systemd-zfs-partition-backup.sh
+++ b/systemd-zfs-partition-backup.sh
@@ -1,75 +1,90 @@
1#!/usr/bin/bash 1#!/usr/bin/bash
2logger "================================================================================" 2# Written in 2020 by Max Christian Pohle <webmaster@coderonline.de>
3 3
4# BACKUP_NAME=$ID_SERIAL-part$ID_PART_ENTRY_NUMBER 4# check for a configuration file and source it in if its there
5BACKUP_NAME=$(echo $1 | sed -e 's/\\x2d/-/g') 5test -f /etc/default/systemd-zfs-partition-backup &&\
6MOUNT_TARGET=/media/$BACKUP_NAME 6 source /etc/default/systemd-zfs-partition-backup
7
8DISK_NAME=$1
9DISK_NAME_ESCAPED=$(systemd-escape "$DISK_NAME")
10
11logger "Disk: $DISK_NAME"
12logger " : $DISK_NAME_ESCAPED (escaped)"
13
14function beep() {
15 test -f /usr/bin/beep &&\
16 env -u SUDO_GID -u SUDO_COMMAND -u SUDO_USER -u SUDO_UID /usr/bin/beep $@
17}
7 18
8function fail() { 19function fail() {
9 logger -s -t "$0" "Backup '$1' -> '$2' failed." 20 # logger -s -t "$0" "Backup '$1' -> '$2' failed."
10 sudo -u max beep -f 40 -l 500 21 logger -s "$@"
22 beep -f 40 -l 500
11 # sudo -u max beep -f 523 -l 150 -n -f 54 -l 600 23 # sudo -u max beep -f 523 -l 150 -n -f 54 -l 600
12} 24}
13 25
14function start() { 26function start() {
15 DEVNAME=$(echo $1 | sed 's/-/\\x2d/') 27 systemctl start media-$DISK_NAME_ESCAPED.automount ||\
16 systemctl restart media-$DEVNAME.automount 28 (fail "could not start disk with service media-$DISK_NAME_ESCAPED.automount"; exit 1)
17
18 logger -t "$0" "Backup '$1' -> '$2' started."
19 sudo -u max beep -f 147 -l 120 -n -f 294 -l 200 -n -f 831
20} 29}
21 30
22function stop() { 31function stop() {
23 DEVNAME=$(echo $1 | sed 's/-/\\x2d/') 32 systemctl stop media-$DISK_NAME_ESCAPED.automount ||\
24 systemctl stop media-$DEVNAME.automount 33 (fail "could not stop disk with service media-$DISK_NAME_ESCAPED.automount"; exit 1)
25
26 logger -t "$0" "Backup '$1' -> '$2' finished."
27 sudo -u max beep -f 831 -l 120 -n -f 294 -l 200 -n -f 147
28} 34}
29 35
30function zfs_snapshot() {
31 zfs diff $LAST_SNAPSHOT > $ZFS_PATH/backup-differences.txt
32 zfs snap media-backup/$BACKUP_NAME@$(date +%Y-%m-%d--%H-%M)
33 echo "Here comes a list of changes since your last backup: $LAST_SNAPSHOT" | mailx -A typesafe -a $ZFS_PATH/backup-differences.txt -s 'Backup overview' max@entwicklerseite.de
34}
35 36
36start $1 37# iterate over all datasets
38for i in $(zfs list -H -o name);
39do
40 # compare the 'tail' of the PATH against the disk name...
41 if [ "$(basename $i)" == "$DISK_NAME" ]; then
42 start $DISK_NAME
43
44 DISK_MOUNTPOINT="/media/$DISK_NAME"
45 if ! findmnt $DISK_MOUNTPOINT; then
46 logger -s "Expected to find disk '$DISK_NAME' mounted under '$DISK_MOUNTPOINT'. But it is not there. Aborting backup."
47 beep -f 40 -l 500
48 exit 1
49 fi
50
51 DATASET=$i
52 DATASET_LAST_SNAPSHOT=$(zfs list -t snap -o name -s creation "$DATASET" | tail -n1) ||\
53 (fail "we could not find a previous backup. Backup may still be possible (first time backup?)")
54
55 ZFS_MOUNTPOINT=$(zfs get mountpoint -H -o value "$DATASET") ||\
56 (fail "could not determine mountpoint for dataset '$DATASET'"; exit 1)
57
58 # sanity check: is it really mounted?
59 findmnt -no source "$ZFS_MOUNTPOINT" ||\
60 (fail "Dataset $DATASET is not mounted at $ZFS_MOUNTPOINT" ; exit 1)
37 61
38if ! findmnt $MOUNT_TARGET; then 62 logger -s "Backup from '$DISK_MOUNTPOINT' -> '$ZFS_MOUNTPOINT' possible. Starting in 10 seconds..."
39 logger "$MOUNT_TARGET is not mounted. Cannot back it up."
40 exit 0
41fi
42 63
43logger ">> Inspecting $BACKUP_NAME" 64 beep -f 147 -l 120 -n -f 294 -l 200 -n -f 831
44ZFS_PATH=$(zfs get mountpoint -H -o value media-backup/$BACKUP_NAME) || fail "$MOUNT_TARGET" "(no zfs dataset found)"
45ZFS_MOUNTPATH=$(findmnt -no source $ZFS_PATH) || fail "$ZFS_PATH (not mounted)" "(no association)"
46LAST_SNAPSHOT=$(zfs list -t snap -o name -s creation media-backup/$BACKUP_NAME | tail -n1)
47 65
66 set -x
67 rsync -ahoi -x --delete --info=all \
68 "$DISK_MOUNTPOINT" "$ZFS_MOUNTPOINT" \
69 2>&1 | tee $ZFS_MOUNTPOINT/backup-report.txt
70 set +x
48 71
49# Make sure, that we are really writing where a mountpoint is 72 zfs snap $DATASET@$(date +%Y-%m-%d--%H-%M-%S) ||\
50if [ "$ZFS_PATH" == "/$ZFS_MOUNTPATH" ]; then 73 (fail "Backup successful, but a snapshot of the dataset '$DATASET' was impossible :(")
51 sudo -u max beep -f 831
52 logger "We can start $MOUNT_TARGET -> $ZFS_PATH"
53 rsync -ahoi -x --delete --info=all \
54 "/media/$BACKUP_NAME/" \
55 "$ZFS_PATH" \
56 2>&1 | tee $ZFS_PATH/backup-report.txt && zfs_snapshot
57 74
58else
59 fail $ZFS_PATH $ZFS_MOUNTPATH
60 exit 1
61fi
62 75
76 if [ -n "$SYSTEMD_ZFS_PARTITION_BACKUP_DIFF_FILENAME" ]; then
77 zfs diff $DATASET_LAST_SNAPSHOT > $ZFS_MOUNTPOINT_VERIFIED/"$SYSTEMD_ZFS_PARTITION_BACKUP_DIFF_FILENAME"
63 78
79 if [ -n "$SYSTEMD_ZFS_PARTITION_BACKUP_EMAIL" ]; then
80 logger -s "Here comes a list of changes since your last backup: $LAST_SNAPSHOT" |\
81 mailx -A typesafe -a $ZFS_MOUNTPOINT_VERIFIED/"$SYSTEMD_ZFS_PARTITION_BACKUP_DIFF_FILENAME" -s 'Backup overview' "$SYSTEMD_ZFS_PARTITION_BACKUP_EMAIL"
82 fi
83 fi
64 84
65stop $1 85 stop $DISK_NAME
66 86
67# sleep a second so that /dev/disk/by-id/*-part become available 87 beep -f 831 -l 120 -n -f 294 -l 200 -n -f 147
68# sleep 1 88 fi
89done
69 90
70# DISK=$(readlink -f /dev/disk/by-id/$ID_BUS-$ID_SERIAL)
71# if ! [ -e "$DISK" ]; then
72# fail
73# logger "$DISK: Disk not there :("
74# exit 1
75# fi
diff --git a/systemd-zfs-partition-backup/AUR/PKGBUILD b/systemd-zfs-partition-backup/AUR/PKGBUILD
index f9d7315..918497f 100644
--- a/systemd-zfs-partition-backup/AUR/PKGBUILD
+++ b/systemd-zfs-partition-backup/AUR/PKGBUILD
@@ -12,8 +12,9 @@ depends=(
12 'kbd' 12 'kbd'
13 'mkinitcpio' 13 'mkinitcpio'
14) 14)
15source=("http://git.entwicklerseite.de/zfs-bash-tools/snapshot/zfs-bash-tools-master.tar.bz2") 15source=("http://git.entwicklerseite.de/zfs-bash-tools/snapshot/zfs-bash-tools-master.tar.gz")
16sha256sums=('a734c145709687c5621f430d3baec3105977984dfbb35348beab4b793aeb8e1b') 16sha256sums=('80c5a14dbbccc1f0164557cf2f4f31ab45c3b08aa577e60a54d198bac01ca91b')
17echo "test"
17 18
18package() { 19package() {
19 install -D zfs-bash-tools-master/${pkgname}.sh ../pkg/${pkgname}/usr/bin/${pkgname}.sh 20 install -D zfs-bash-tools-master/${pkgname}.sh ../pkg/${pkgname}/usr/bin/${pkgname}.sh
diff --git a/systemd-zfs-partition-backup/AUR/getsha256sum.sh b/systemd-zfs-partition-backup/AUR/getsha256sum.sh
new file mode 100755
index 0000000..92760b3
--- /dev/null
+++ b/systemd-zfs-partition-backup/AUR/getsha256sum.sh
@@ -0,0 +1,21 @@
1#!/usr/bin/bash
2# source PKGBUILD
3# function allsha() {
4# for i in $source
5# do
6# printf "'%s' " "$(wget -q -O- "$i" | sha256sum | awk '/-$/{ print $1 }')"
7# done
8# }
9#
10# allsha | tee /tmp/output.txt
11
12
13ARCHIVE=$(mktemp --suffix=.tar.bz2)
14
15cd $(git rev-parse --show-toplevel)
16git archive -o "$ARCHIVE" master
17cd - > /dev/null
18
19cat $ARCHIVE | sha256sum | awk '/-$/{ print $1 }'
20rm $ARCHIVE
21
..