Creating namespace in a VM fails when NVDIMM size is not a multiple of 128MB

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• Unable to create namespace in a VM when NVDIMM size is not a multiple of 128MB.
• You would see the below error:

ndctl create-namespace -f -e namespace1.0 --mode=fsdax --map=mem
The second nvdimm failed due to alighment issues
libndctl: ndctl_pfn_enable: pfn1.0: failed to enable
Error: namespace1.0: failed to enable

Environment

VMware vSphere ESXi 6.7

Cause

This issue occurs because the NVDIMM size not a multiple of 128MB.

Resolution

To resolve this issue, specify NVDIMM size in multiples of 128MB.