From 33f3e8f2a154a8bf571e405b73636d82b9443eb0 Mon Sep 17 00:00:00 2001
From: Eduardo Pedroni <e.pedroni91@gmail.com>
Date: Sat, 5 May 2018 16:56:21 +0200
Subject: Added backup lock to prevent stacked crashes

---
 stromboli_backup | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/stromboli_backup b/stromboli_backup
index ad5c74a..91bb763 100755
--- a/stromboli_backup
+++ b/stromboli_backup
@@ -1,5 +1,20 @@
 #!/usr/bin/zsh
 # Backup script for stromboli. This synchronises stromboli's local storage with the NFS data from vesuvio.
 
+BACKUP_LOCK="/tmp/backup_in_progress"
+
+# Do not attempt to backup if there is already a backup happening (it probably means something is wrong)
+if [[ -e "$BACKUP_LOCK" ]]; then
+    # TODO notify somehow (email?)
+    exit 1
+fi
+
+# Create backup lock file
+echo "Doing backup..." > "$BACKUP_LOCK"
+
+# Do backup
 /home/eddy/bin/backup vesuvio: /home/eddy/backup
 sync
+
+# Backup was successful, remove lock
+rm "$BACKUP_LOCK"
-- 
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