From cc012c734885fd8432d58f1501217f72b976b53a Mon Sep 17 00:00:00 2001
From: Shane Kerr <shane@time-travellers.org>
Date: Tue, 7 Apr 2020 11:43:54 +0200
Subject: [PATCH] Create the backup tarball explicitly before invoking tar
 (#703)

When grocy is installed on a btrfs file system, the tar command
fails if the tarball is not created first.
---
 update.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/update.sh b/update.sh
index f0d90aea..b36ae2f0 100755
--- a/update.sh
+++ b/update.sh
@@ -12,6 +12,7 @@ pushd `dirname $0` > /dev/null
 backupBundleFileName="backup-`date +%d-%m-%Y-%H-%M-%S`.tgz"
 echo Making a backup of the current installation in ./data/backups/$backupBundleFileName
 mkdir -p ./data/backups > /dev/null
+touch ./data/backups/$backupBundleFileName
 tar -zcvf ./data/backups/$backupBundleFileName --exclude ./data/backups . > /dev/null
 find ./data/backups/*.tgz -mtime +60 -type f -delete