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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.


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


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


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


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.


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

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