Backup plugin: unable to delete files in a Local Storage

Article ID:360029063712
1 minute readKnowledge base

Issue

  • My backup job is failing with a similar traces like the following in the Console Build logs:

....
Caused: java.io.IOException: Unable to delete /var/lock - files in dir: [/var/lock/subsys]
at hudson.Util.tryOnceDeleteFile(Util.java:324)
at hudson.Util.deleteFile(Util.java:274)
Caused: java.io.IOException: Unable to delete '/var/lock'. Tried 3 times (of a maximum of 3) waiting 0.1 sec between attempts.
at hudson.Util.deleteFile(Util.java:279)
at com.infradna.hudson.plugins.backup.store.LocalFileStore$2.delete(LocalFileStore.java:145)
at com.infradna.hudson.plugins.backup.retention.UpToNRetentionPolicy.scrub(UpToNRetentionPolicy.java:30)
at com.infradna.hudson.plugins.backup.BackupBuilder.scrub(BackupBuilder.java:268)
at com.infradna.hudson.plugins.backup.BackupBuilder.doPerform(BackupBuilder.java:251)
at com.infradna.hudson.plugins.backup.BackupBuilder.perform(BackupBuilder.java:172)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
at hudson.model.Build$BuildExecution.build(Build.java:206)
at hudson.model.Build$BuildExecution.doRun(Build.java:163)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
at hudson.model.Run.execute(Run.java:1810)
at hudson.model.Build.run(Build.java:114)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
An attempt to send an e-mail to empty list of recipients, ignored.
Finished: FAILURE
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Environment

Resolution

This happens when backup target folder is a LocalFileStore type and the target folder contains a subfolder.

For example, having this folder structure

.
└── folder.example
    └── subfolder.example

If folder.example is configured as backup target folder from a local file system, it will fail. The solution is using folder.example/subfolder.example instead.

Notes:

  1. CloudBees Backup plugin >= 3.38.12 solves the issue, meaning that a Backup Target folder can contain subfolders.

  2. For disaster recovery, it is highly recommended that you send the backup to a network drive, NFS-mounted directory, etc. see Backup Plugin - Local directory