SUSE Support

Here When You Need Us

Failed unmounting /usr on boot

This document (7018386) is provided subject to the disclaimer at the end of this document.

Environment


SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)

Situation

After an upgrade to SUSE Linux Enterprise Server 12 Service Pack 2 the following error message is observed on boot or in the /var/log/boot.log:

[FAILED] Failed unmounting /usr.

And 'journalctl' shows:

umount[958]: umount: /usr: target is busy

The system finishes booting and there appears to be no real harm to the system as /usr won't be unmounted. However the system should not even attempt to umount /usr at this stage.

(This is only shown when /usr is on a separate partition. Unless btrfs/snapshots is being used requiring /usr on the root file system, /usr can be on a separate partition.)

Resolution

The systemd update, systemd-228-126.1 released January 2017 includes the patch for the problem. Please install the recommended update.

Cause


Additional Information


Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7018386
  • Creation Date: 13-Dec-2016
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]suse.com

tick icon

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

tick icon

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.

tick icon

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.