I deleted everything in /backup/zimbra yesterday and got a fresh backup this morning.
After I restored the zimbra with this backup, everything is OK.
I checked the backup shell script.
The shell script does twice sync with the following command:
rsync -avHK --delete /opt/zimbra/ /backup/zimbra
One time is executed when zimbra is alive and the other time is executed after zimbra is stopped.
Is there any problem in this
Simple Shell Script ?