I just want to let you know that I have now attempted twice an upgrade from Zimbra 8.7.11 to 8.8.11 (Community) and each time it resulted in what I can only describe as a catastrophic loss of the server.
Before I explain, I have worked with servers for many years and I have never seen anything quite like this.
The upgrade wizard itself seems to run smoothly and completes quickly. I used this as a guide: https://www.howtoforge.com/tutorial/upg ... on-ubuntu/
After the upgrade however, the server Zimbra does appear to come back online but starts consuming disk space at a rate I've never seen before. The log files simply explode at about 5GB a minute and become so large that I can't see whats contained within them. On the second attempt I had the foresight to ban the server from sending service notification emails because it was sending those out at an simply alarming rate (6000 emails a minute) so when I had a second go at it, I set within /opt/zimbra/conf/localconfig.xml "smtp_notify" to no. I learned my lesson because on the first go, our SMTP relay providor suspended our account. I should mention that the logfiles are not the only place where Zimbra seems to be consuming disk space. Once I turned the notifications off, the free space continued to drop and I am positive there is a another process responsible but the server could not be kept online long enough for me to diagnose it.
In both attempts the entire HDD was consumed in total (which only took a matter of minutes) and I was forced to shut the server down and revert to a backup.
I have to say I have absolutely no idea how to fix this or where to even begin. I regard this upgrade as dangerous.
Shane.
