Dell NVMe User Manual

451

Technical White Paper

NVMe Surprise Removal on Dell EMC
PowerEdge servers running Linux operating
systems

Abstract

This white paper describes the support for Non-Volatile Memory Express (NVMe)
Surprise Removal on Dell EMC PowerEdge servers running supported
Enterprise Linux operating systems.

October 2020

Revisions

2 NVMe Surprise Removal on Dell EMC PowerEdge servers running Linux operating systems | 451

Revisions

Date

Description

October 2020

Initial release

Acknowledgements

Author: Narendra K
Support: Austin Bolen, Gurupreet Kaushik, Sherry Keller

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Copyright © 27/10/2020 Dell Inc. or its subsidiaries. All Rights Reserved. Dell Technologies, Dell, EMC, Dell EMC and other trademarks are trademarks
of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

Table of contents

3 NVMe Surprise Removal on Dell EMC PowerEdge servers running Linux operating systems | 451

Table of contents

Revisions............................................................................................................................................................................. 2

Acknowledgements ............................................................................................................................................................. 2

Table of contents ................................................................................................................................................................ 3

Executive summary ............................................................................................................................................................. 4

1 Introduction ................................................................................................................................................................... 5

1.1 Audience and scope ........................................................................................................................................... 5

1.2 Terminology ........................................................................................................................................................ 5

1.3 Command-line utilities used for verifying surprise removal of NVMe devices .................................................... 5

2 Surprise removal of NVMe devices .............................................................................................................................. 6

2.1 Supported and unsupported scenarios for surprise removal of NVMe devices ................................................. 6

2.2 Identifying the NVMe device slot and verifying surprise removal ....................................................................... 6

2.3 Platform and operating system support summary .............................................................................................. 7

3 Known issues with NVMe surprise removal ................................................................................................................. 8

3.1 SUSE Linux Enterprise Server Service Pack 2 .................................................................................................. 8

3.1.1 MD RAID layer is not notified of the surprise removal of Samsung NVMe devices ........................................... 8

3.1.2 Status of the RAID 0 logical volume is displayed as Available when one of the members of the RAID array is

surprise removed .......................................................................................................................................................... 8

3.1.3 LVM does not activate a free physical volume when one of the NVMe devices is surprise removed ............... 8

4 Summary ...................................................................................................................................................................... 9

5 References ................................................................................................................................................................. 10