Configuring Persistent Memory Devices (PMEM) results in booting to the recovery shell

This document (7024085) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12 Service Pack 4 (SLES 12 SP4)

Situation

Configuring PMEM devices with fsdax namespaces results in the server booting to the recovery shell.

Resolution

Force the libnvdimm module to load after the btrfs kernel module by adding the following entry to for example "/etc/modprobe.d/99-local.conf":

# Load btrfs before libnvdimm                                                                
softdep libnvdimm pre: btrfs

Cause

The PMEM device configuration delays the loading of the nvdimm module, which in turn delays the loading of subsequent modules and results in disk timeouts.

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:7024085
  • Creation Date: 23-Aug-2019
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback@suse.com

SUSE Support Forums

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

Join Our Community

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.


SUSE Customer Support Quick Reference Guide SUSE Technical Support Handbook Update Advisories
Support FAQ

Open an Incident

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

Go to Customer Center