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
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- SUSE Linux Enterprise Server
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