That was it! I spoke to the person who applied the patch and she did stop the services before applying. We ran the script to update the ldap schema and backups are working again.
Makes me wonder though if anything else was impacted by the fact the patch was applied with the services stopped. Any thoughts?
Thanks to all who helped with this.
Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here
Re: Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here
I was under the impression that everything has to always run when patching?
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Martinwiertz
- Advanced member

- Posts: 120
- Joined: Sat Sep 13, 2014 3:55 am
- Location: The Netherlands
- ZCS/ZD Version: V10.1 FOSS Intalio on Ubuntu22.04
Re: Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here
Upgrade went well. System (FOSS) was running while upgrading. (full backup performed prior)
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yeak
- Posts: 34
- Joined: Fri Jun 17, 2016 6:05 am
- Location: Malaysia
- ZCS/ZD Version: Zimbra 10
- Contact:
Re: Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here
Upgraded to 10.1.16 successfully. Discover PDF file preview in Modern UI is partially broken. Once zoom in the file, cannot zoom back. Have to reload the browser. Also see Administrators forum for others who reported the same.
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yeak
- Posts: 34
- Joined: Fri Jun 17, 2016 6:05 am
- Location: Malaysia
- ZCS/ZD Version: Zimbra 10
- Contact:
Re: Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here
In Modern UI press Ctrl-P bring up browser print view with content. After upgraded to 10.1.16, print view shows blank content.
Workaround is to use ... to choose Print menu.
So integration of Ctrl-P to print is broken.
Workaround is to use ... to choose Print menu.
So integration of Ctrl-P to print is broken.
- adrian.gibanel.btactic
- Outstanding Member

- Posts: 578
- Joined: Thu Jan 30, 2014 11:13 am
- Contact:
Re: Zimbra 10.1.16 Released - ldap_schema_upgrade.sh sometimes it's not run
So... in one Ubuntu 22.04 cluster everything went ok.Lostaff wrote: ↑Wed Feb 11, 2026 10:20 ambtrent98 wrote: ↑Tue Feb 10, 2026 5:21 pmFor whatever reason, it looks like we don't have any of those 3 config variables defined?Code: Select all
root@newzmoby:~# su - zimbra zimbra@newzmoby:~$ zmprov gs $(zmhostname) zimbraBackupDeduplication # name newzmoby.atcorp.com zimbra@newzmoby:~$ zmprov gs $(zmhostname) zimbraBackupDedupeCompressionType # name newzmoby.atcorp.com zimbra@newzmoby:~$ zmprov gs $(zmhostname) zimbraBackupCSDReset # name newzmoby.atcorp.com zimbra@newzmoby:~$ dpkg -l | grep zimbra-ldap-patch ii zimbra-ldap-patch 10.1.16.1767758060-1.u20 amd64 Zimbra ldap Patch zimbra@newzmoby:~$ dpkg -l | grep zimbra-patch ii zimbra-patch 10.1.16.1770142646-2.u20 amd64 Zimbra Network Patch
We had the same problem.
The error:
ERROR: account.INVALID_ATTR_NAME (invalid attr name: invalid attr name - unable to modify attributes: ldap host=<hostname>.com:389: zimbraBackupDeduplication: attribute type undefined)
means that the zimbraBackupDeduplication attribute is missing from the zimbra schema.
It is missing because the LDAP server update was most likely performed with Zimbra services turned off.
With services turned off, the LDAP schema zimbra.ldif is not updated.
To resolve the issue:
we ran the following script: /opt/zimbra/lib/patches/ldap/ldap_schema_upgrade.sh
and after zmcontrol restart, this updates the Zimbra schema.
Remember to always take a snapshot of the VM first.
Best regards
In another Ubuntu 22.04 cluster ( ZCS NE 10.1.15 to ZCS NE 10.1.16 ) somehow the dist-upgrade process did not update the ldap schema.
Running zmbackup manually did not output any problem but backups were not being done any more.
Using zmbackup --debug unveiled this problem:
Code: Select all
Error occurred: Cannot invoke "String.equals(Object)" because the return value of "com.zimbra.cs.account.Server.getAttr(String)" is null
java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because the return value of "com.zimbra.cs.account.Server.getAttr(String)" is null
at com.zimbra.cs.backup.BackupUtil.main(BackupUtil.java:143)
Code: Select all
ERROR: account.INVALID_ATTR_NAME (invalid attr name: invalid attr name - unable to modify attributes: ldap host=<hostname>.com:389: zimbraBackupDeduplication: attribute type undefined)
Running: /opt/zimbra/lib/patches/ldap/ldap_schema_upgrade.sh in the ldap node fixed the issue.
So... what's new in our case it's that both ldap and mailboxes nodes were up and running when the upgrade (apt-get dist-upgrade) was done (As you expected... ldap node was dist-upgraded first and then mailbox node was dist-upgraded second).
Not sure what might trigger this issue (ldap schema not being upgraded properly) in some Ubuntu 22.04 clusters and not triggering it in other Ubuntu 22.04 clusters.