From 5901afdaaed3766ec9f179cc187185be2436f163 Mon Sep 17 00:00:00 2001
From: m8in <m8in@gmx.de>
Date: Sat, 21 Jun 2025 00:39:42 +0200
Subject: [PATCH] zfs snaphots

---
 script/zfs/snapshot/snapshot-cleanup.sh | 33 ++++++++++++++
 script/zfs/snapshot/snapshot-minutly.sh | 13 ++++++
 script/zfs/snapshot/snapshot.sh         | 57 +++++++++++++++++++++++++
 3 files changed, 103 insertions(+)
 create mode 100755 script/zfs/snapshot/snapshot-cleanup.sh
 create mode 100755 script/zfs/snapshot/snapshot-minutly.sh
 create mode 100755 script/zfs/snapshot/snapshot.sh

diff --git a/script/zfs/snapshot/snapshot-cleanup.sh b/script/zfs/snapshot/snapshot-cleanup.sh
new file mode 100755
index 0000000..df9a96a
--- /dev/null
+++ b/script/zfs/snapshot/snapshot-cleanup.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+MIN_MIN=$(date --date="- 5 minutes" -u "+%Y%m%d%H%M")
+HOUR_MIN=$(date --date="- 1 days" -u "+%Y%m%d%H")
+DAY_MIN=$(date --date="- 7 days" -u "+%Y%m%d")
+MONTH_MIN=$(date --date="- 3 years" -u "+%Y%m")
+ 
+zfs list -Hr -o name -t snapshot -r "zpool1/persistent" | grep -E "^zpool1/persistent/[a-zA-Z0-9_-]+@(SNAPHOURLY|SNAPDAILY|SNAPMONTHLY|SNAPMINUTLY)_[0-9]{6,12}$" | while read SNAPSHOT; do
+        SNAPSHOT_TIME=$(echo "$SNAPSHOT" | grep -oE "[0-9]+$")
+        if [[ ${#SNAPSHOT_TIME} == 12 && "$SNAPSHOT_TIME" < "${MIN_MIN}" ]]; then
+                zfs destroy "${SNAPSHOT}"
+        fi
+        if [[ ${#SNAPSHOT_TIME} == 10 && "$SNAPSHOT_TIME" < "${HOUR_MIN}" ]]; then
+                zfs destroy "${SNAPSHOT}"
+        fi
+        if [[ ${#SNAPSHOT_TIME} == 8 && "${SNAPSHOT_TIME}" < "${DAY_MIN}" ]]; then
+                zfs destroy "${SNAPSHOT}"
+        fi
+        if [[ ${#SNAPSHOT_TIME} == 6 && "${SNAPSHOT_TIME}" < "${MONTH_MIN}" ]]; then
+                zfs destroy "${SNAPSHOT}"
+        fi
+done
+ 
+ 
+ 
+MONTH_MIN_QA=$(date --date="- 1 month" -u "+%Y%m")
+ 
+zfs list -Hr -o name -t snapshot -r "zpool1/persistent" | grep -E "^zpool1/persistent/[a-zA-Z0-9_-]+-qa@SNAPMONTHLY_[0-9]{6}$" | while read SNAPSHOT_QA; do
+        SNAPSHOT_TIME_QA=$(echo "$SNAPSHOT_QA" | grep -oE "[0-9]+$")
+        if [[ "${SNAPSHOT_TIME_QA}" < "${MONTH_MIN_QA}" ]]; then
+                zfs destroy "${SNAPSHOT_QA}"
+        fi
+done
+
diff --git a/script/zfs/snapshot/snapshot-minutly.sh b/script/zfs/snapshot/snapshot-minutly.sh
new file mode 100755
index 0000000..a2ce53a
--- /dev/null
+++ b/script/zfs/snapshot/snapshot-minutly.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
+
+_TIMESTAMP="$(date -u "+%Y%m%d%H%M")"
+_ZFS_FILESYSTEM="${1:?"Missing first parameter ZFS_FILESYSTEM."}"
+echo "${_ZFS_FILESYSTEM}" | grep -E '\-prod$' &> /dev/null \
+    && zfs snapshot "${_ZFS_FILESYSTEM}@SNAPMINUTLY_${_TIMESTAMP}" \
+    && exit 0
+
+echo "Snapshot konnte nicht angelegt werden:"
+echo "  - ${_ZFS_FILESYSTEM}@SNAPMINUTLY_${_TIMESTAMP}"
+echo "  (Minuten-Snapshots sollen nur auf 'PROD'-Containeren angelegt werden, sodass diese dann syncronisiert werden)"
+exit 1
diff --git a/script/zfs/snapshot/snapshot.sh b/script/zfs/snapshot/snapshot.sh
new file mode 100755
index 0000000..a48999b
--- /dev/null
+++ b/script/zfs/snapshot/snapshot.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+HOUR=$(date -u "+%Y%m%d%H")
+DAY=${HOUR:0:8}
+MONTH=${HOUR:0:6}
+HOSTOWNER=$(cat /invra/hostowner)
+if [ ! -d /tmp/locks ]; then
+	mkdir /tmp/locks
+fi
+
+zfs list -Hr -o name zpool1/persistent | grep -v -- -BACKUP | tail -n +2 | while read DATASET; do
+	CONTAINER=${DATASET#zpool1/persistent/}
+	(
+		flock -n 9 || exit 1
+
+		MODE_FILE="/invra/state/$HOSTOWNER/containers/$CONTAINER/snapshot-mode"
+		HOURLY=1
+		DAILY=1
+		MONTHLY=1
+
+		if [ -f "$MODE_FILE" ]; then
+			grep -i "NONE" "$MODE_FILE" &> /dev/null
+			if [ $? -eq 0 ]; then
+				exit
+			fi
+			grep -i "HOURLY" "$MODE_FILE" &> /dev/null
+			if [ $? -ne 0 ]; then
+				HOURLY=0
+			fi
+			grep -i "DAILY" "$MODE_FILE" &> /dev/null
+			if [ $? -ne 0 ]; then
+				DAILY=0
+			fi
+			grep -i "MONTHLY" "$MODE_FILE" &> /dev/null
+			if [ $? -ne 0 ]; then
+				MONTHLY=0
+			fi
+		fi
+		SNAPSHOT_HOUR="${DATASET}@SNAPHOURLY_${HOUR}"
+		SNAPSHOT_DAY="${DATASET}@SNAPDAILY_${DAY}"
+		SNAPSHOT_MONTH="${DATASET}@SNAPMONTHLY_${MONTH}"
+
+		zfs list -H -t snapshot -o name -r "$DATASET" | grep -E "^${SNAPSHOT_HOUR}$" > /dev/null
+		if [[ $? -ne 0 && $HOURLY -eq 1 ]]; then
+			zfs snapshot "${SNAPSHOT_HOUR}"
+		fi
+
+		zfs list -H -t snapshot -o name -r "$DATASET" | grep -E "^${SNAPSHOT_DAY}$" > /dev/null
+		if [[ $? -ne 0 && $DAILY -eq 1 ]]; then
+			zfs snapshot "${SNAPSHOT_DAY}"
+		fi
+
+		zfs list -H -t snapshot -o name -r "$DATASET" | grep -E "^${SNAPSHOT_MONTH}$" > /dev/null
+		if [[ $? -ne 0 && $MONTHLY -eq 1 ]]; then
+			zfs snapshot "${SNAPSHOT_MONTH}"
+		fi
+	) 9>>/tmp/locks/snapshot.${CONTAINER}.lock
+done