Execute prune after forget, Improove logging

- Log start and end with total duration
- Copy backup-last.log to backup-error-last.log after fail

backup.sh

@@ -1,27 +1,60 @@
 #!/bin/sh
 
-echo "Starting Backup"
+lastLogfile="/var/log/backup-last.log"
+
+copyErrorLog() {
+  cp ${lastLogfile} /var/log/backup-error-last.log
+}
+
+logLast() {
+  echo "$1" >> ${lastLogfile}
+}
+
+start=`date +%s`
+rm -f ${lastLogfile}
+echo "Starting Backup at $(date +"%Y-%m-%d %H:%M:%S")"
+echo "Starting Backup at $(date)" >> ${lastLogfile}
+logLast "BACKUP_CRON: ${BACKUP_CRON}"
+logLast "RESTIC_TAG: ${RESTIC_TAG}"
+logLast "RESTIC_FORGET_ARGS: ${RESTIC_FORGET_ARGS}"
+
 
 # Do not save full backup log to logfile but to backup-last.log
-restic backup /data --tag=${RESTIC_TAG?"Missing environment variable RESTIC_TAG"} > /var/log/backup-last.log 2>&1
+restic backup /data --tag=${RESTIC_TAG?"Missing environment variable RESTIC_TAG"} >> ${lastLogfile} 2>&1
 rc=$?
-echo "Finished backup at $(date)" >> /var/log/backup-last.log
+logLast "Finished backup at $(date)"
 if [[ $rc == 0 ]]; then
     echo "Backup Successfull" 
 else
     echo "Backup Failed with Status ${rc}"
     restic unlock
+    copyErrorLog
 fi
 
 if [ -n "${RESTIC_FORGET_ARGS}" ]; then
     echo "Forget about old snapshots based on RESTIC_FORGET_ARGS = ${RESTIC_FORGET_ARGS}"
-    restic forget ${RESTIC_FORGET_ARGS} >> /var/log/backup-last.log 2>&1
+    restic forget ${RESTIC_FORGET_ARGS} >> ${lastLogfile} 2>&1
     rc=$?
-    echo "Finished forget at $(date)" >> /var/log/backup-last.log
+    logLast "Finished forget at $(date)"
     if [[ $rc == 0 ]]; then
         echo "Forget Successfull"
+        echo "Prune obsolete data"
+        restic prune >> ${lastLogfile} 2>&1
+        rc=$?
+        logLast "Finished prune at $(date)"
+        if [[ $rc == 0 ]]; then
+          echo "Prune Successfull"
+        else
+          echo "Prune Failed with Status ${rc}"
+          restic unlock
+          copyErrorLog
+        fi
     else
         echo "Forget Failed with Status ${rc}"
         restic unlock
+        copyErrorLog
     fi
 fi
+
+end=`date +%s`
+echo "Finished Backup at $(date +"%Y-%m-%d %H:%M:%S") after $((end-start)) sconds"

run.sh

@@ -7,7 +7,8 @@ echo "Start backup-test container. Backup of ~/test-data/ to repository ~/test-r
 docker run --privileged --name backup-test \
 -e "RESTIC_PASSWORD=test" \
 -e "RESTIC_TAG=test" \
--e "BACKUP_CRON=* * * * *" \
+-e "BACKUP_CRON=0 0 * * *" \
+-e "RESTIC_FORGET_ARGS=--keep-last 10" \
 -v ~/test-data:/data \
 -v ~/test-repo/:/mnt/restic \
 -t restic-backup