How to Monitor Intel® Virtual RAID on CPU (Intel® VROC) RAID Volumes in Linux*

Description

Unable to check the status of the RAID volume in Linux.

Resolution

There are multiple ways to get information about the Intel® VROC RAID volumes in a Linux* system. Each command listed below show information at different levels in the system:

• System Level Information
  • Information about the platform, connected drives, and the Intel® VROC capabilities can be checked by running the command: $ mdadm --detail-platform
  • Information about the block device can be checked by running the command: $ ls -l /dev/md
• General RAID Status
  • General information about the existing RAID volumes and containers can be checked by running the command: $ cat /proc/mdstat
• Detailed RAID Information
  • Detailed information about a RAID volume or container can be checked by running the command: $ mdadm --detail /dev/mdxxx
  • Drives with Intel® Matrix Storage Manager (IMSM) metadata can be checked by running the command: $ blkid
  • Metadata of a RAID member disk can be checked by running the command: $ mdadm --examine /dev/nvmexnx``
• RAID Configuration File
  • If available, the configuration file can be checked by running the command: $ cat /etc/mdadm.conf

Additional information

If you need to debug a possible issue with an Intel® VROC RAID volume, the output of the commands below can also be useful to get more information about the system environment:

• System Information

  • $ uname -a
  • $ hostnamectl

• System Logs

  • $ dmesg
  • $ journalct
  • $ cat /var/log/messages