Issue

The trace java.io.IOException: This archives contains unclosed entries appears on the build console logs after running a backup job.

Environment

• CloudBees Jenkins Enterprise (CJE)
• CloudBees Jenkins Operation Center (CJOC)
• CloudBees Backup Plugin

Resolution

Please review the following points:

1.- Backup job configuration: Build > Take backup > Where to back up? should be pointing to a different folder that Jenkins home folder ( $JENKINS_HOME).

2.- CloudBees Backup Plugin >= 3.31 in order to get fixed JENKINS-20187.

In case the above points are met, the issue is not expected to happen and should be reported to CloudBees Support via ticket attaching the Support Bundle of the instance your a running the backup, plus the config.xml of the backup job.

Workarounds

In the meantime we review your particular case, there are several workarounds you could apply:

A. Enable Build > Take backup > Skip recently modified files under the Advanced tab

B. Enable General Settings > Quiet period