Symptom
Full error during the backup is:
23:19:25 INFO Executing bundle producer: /bin/tar -C '/var/www/vhosts/domain.tld/statistics/webstat' -f - -c . 23:19:25 INFO Executing bundle producer: /bin/tar -C '/var/www/vhosts/domain.tld/httpdocs' -f - -c . Can't use an undefined value as a symbol reference at Storage/Splitter.pm line 71. 23:19:25 INFO Executing bundle producer: /bin/tar -C '/var/www/vhosts/domain.tld/cgi-bin]' -f - -c . gzip: stdout: Broken pipe 23:19:25 INFO Executing bundle producer: /bin/tar -C '/var/www/vhosts/revoit.com.hk/statistics/webstat-ssl' -f - -c . 23:19:25 ERROR Failed to create MIME messag
Cause
Backup utility failed to write data to disk for some reason.
Resolution
Check permissions on the backup folder and it's subfolders using the command below. The right permissions are shown on the second line:
grep DUMP_D /etc/psa/psa.conf | awk '{print "ls -ld "$2}' | sh
drwxr-x--- 7 psaadm psaadm /var/lib/psa/dumps
Also, make sure there is enough free disk space available on the server.