Dell EMC PMem 100 Series User's Guide

Linux errata

1. If an uncorrectable error occurs in the early metadata region of the PMem, the system can get into an infinite loop of being unresponsive when booting into Linux.

   Workaround:Boot with "modprobe.blacklist=nd_pmem" on the kernel command line to stop the consumption of the error and enable boot progress. Afterwards, wait sufficient time for the Address Range Scrub feature to scrub the memory and identify the bad address location so it will be mapped out on future boots.

2. Linux boot fails to Emergency Mode when PMem is configured to automount during boot in fstab.

   Workaround: Add "x-systemd.device-timeout=0" to the mount options for the PMem partition in fstab.

   Example: /dev/pmem5 /mnt/somedir ext4 defaults, x-systemd.device-timeout=0,dax 0 2

3. Dell BIOS does not support boot from PMem. Some Linux operating system (Red Hat Enterprise Linux 7.6, Red Hat Enterprise Linux 8.0) distros are offering early support of this feature, but Dell BIOS does not support this feature.

   Workaround:None.