RAID Device not Visible: mdadm --assemble --scan Command Prints Error: "mdadm: No arrays found in config file" (Doc ID 2186235.1)

Last updated on SEPTEMBER 28, 2016

Applies to:

Linux OS - Version Oracle Linux 5.2 to Oracle Linux 7.2 [Release OL5U2 to OL7U2]
Linux x86
Linux x86-64

Symptoms

After system has booted md0 is missing and all LVs used on top of md0 are not mounted

md0 is not visible at all, /var/log/messages does not hold any IO issues on local disks used by md0.

 

Cause

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