From 6f1ff73839963014088cd48d31dec338cd6b3ad5 Mon Sep 17 00:00:00 2001
From: David Marec <DavidMarec@users.noreply.github.com>
Date: Fri, 14 Jul 2023 22:49:31 +0200
Subject: [PATCH] take a snapshot before upgrading

---
 portupgrade.sh | 11 ++++++++++-
 selfBackup.sh  | 28 ++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100755 selfBackup.sh

diff --git a/portupgrade.sh b/portupgrade.sh
index b178cfd..1e29340 100755
--- a/portupgrade.sh
+++ b/portupgrade.sh
@@ -1,9 +1,15 @@
 #!/bin/sh
 
 all_jails=`jls jid`
+
 DO_CLEAN=""
 DO_DIST=""
 
+do_snap()
+{
+	zfs snap -r zroot/JAILS/master@up || exit 0
+}
+
 do_all_jails(){
 
 	echo '---------------------------------------'
@@ -55,9 +61,12 @@ echo
 
 case "${yn}" in
 	[Yy][eE][sS]|[yY])
-		DO_DIST="clean -a"
+		DO_DIST="clean -a -y"
 		;;
 	*) 
 		;;
 esac
+
+zfs list -H -t snap -r zroot/JAILS/master@up || do_snap
+
 do_all_jails 
diff --git a/selfBackup.sh b/selfBackup.sh
new file mode 100755
index 0000000..18d5778
--- /dev/null
+++ b/selfBackup.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+ZROOT_BASE="zroot"
+SSH="/usr/bin/ssh"
+ZFS="/sbin/zfs "
+REMOTE="matarje"
+REMOTE_USER="david"
+REMOTE_KEY="~/.ssh/zfs"
+REMOTE_POOL="breiz/BCK/master/popeye"
+# ICLUDE="-o canmount=off"
+XCLUDE="-x mountpoint -x canmount"
+
+# getting last snapshot id
+# if one cannot trust the snap id one can use creation time
+
+${ZFS} list -H -t snap -r zroot/JAILS/master@up && zfs destroy -r zroot/JAILS/master@up 
+
+for i in usr usr/home JAILS/master JAILS/master/php  JAILS/master/git JAILS/master/d14 JAILS/master/epee JAILS/master/synapse JAILS/master/mariadb  JAILS/master/next
+do
+	
+ZROOT="${ZROOT_BASE}/${i}"
+ZLAST=`${ZFS} list -o name -Hp -t snap -d 1 ${ZROOT} | cut -d '@' -f 2 | sort | tail -1` 
+REMOTE_ZLAST=`${SSH} -i ${REMOTE_KEY} ${REMOTE_USER}@${REMOTE} ${ZFS} list -o name -Hp -t snap  -d 1 ${REMOTE_POOL}/${i} | cut -d '@' -f 2 | sort | tail -1` 
+
+
+echo "sending incremental backup from " "${REMOTE_ZLAST} to ${ZLAST}" -- /${ZROOT}
+#
+${ZFS} send -L -e -c -i ${ZROOT}@${REMOTE_ZLAST} ${ZROOT}@${ZLAST} | ${SSH} -i  ${REMOTE_KEY} ${REMOTE_USER}@${REMOTE} ${ZFS} recv -Fdu ${ICLUDE} ${XCLUDE} ${REMOTE_POOL}
+done 
-- 
2.47.0