My Oracle Support Banner

bdacheckcluster/bdachecksw Reports "WARNING: Wrong number of internal M2 devices" on X7-2/X8-2 After Replacing a Failed SSD (Doc ID 2728724.1)

Last updated on JULY 20, 2024

Applies to:

Big Data Appliance Integrated Software - Version 4.14.0 and later
Linux x86-64

Symptoms

bdacheckcluster/bdachecksw reports "WARNING: Wrong number of internal M2 devices" on X7-2/X8-2 servers after replacing a failed SSD or replacing both SSDs.

WARNING: Wrong number of internal M2 devices (0) : 0
INFO: Expected number of internal M2 devices (0) : 2

Two SSD disks ship with X7-2/X8-2 servers on the BDA. A user data RAID partition (/ssddisk) is created which spans both SSDs. This configuration allows user data to be retained even if an SSD goes bad and is replaced. Hence this is what is used for Zookeeper and Journal Node metadata.

 

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
Symptoms
Cause
Solution
 Option 1. For when one SSD fails.
 Option 2. For when both SSDs fail.
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.