From 5d6c0137c1fbe75ec7d5fa49cc117b6c8b81bdbd Mon Sep 17 00:00:00 2001
From: dpeca <peca@mycity.rs>
Date: Thu, 21 Jul 2016 02:27:51 +0200
Subject: [PATCH] Fix for: /usr/local/vesta/func/db.sh: line 390: [: : integer
 expression expected

Every night cron is sending email with subject: Cron <admin@host> sudo /usr/local/vesta/bin/v-update-sys-queue disk
And content of that email is: /usr/local/vesta/func/db.sh: line 390: [: : integer expression expected

This is a fix for that bug.

I guess mysql for some databases returns empty string for DB size, so this will handle that case.
---
 func/db.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/func/db.sh b/func/db.sh
index c7514eeaf..59a307462 100644
--- a/func/db.sh
+++ b/func/db.sh
@@ -387,7 +387,7 @@ get_mysql_disk_usage() {
     query="SELECT SUM( data_length + index_length ) / 1024 / 1024 \"Size\"
         FROM information_schema.TABLES WHERE table_schema='$database'"
     usage=$(mysql_query "$query" |tail -n1)
-    if [ "$usage" == 'NULL' ] || [ "${usage:0:1}" -eq '0' ]; then
+    if [ "$usage" == '' ] || [ "$usage" == 'NULL' ] || [ "${usage:0:1}" -eq '0' ]; then
         usage=1
     fi
     export LC_ALL=C