mdadm: Cannot open /dev/sda1: Device or resource busy

(Doc ID 1483141.1)

Last updated on AUGUST 24, 2017

Applies to:

Linux OS - Version Oracle Linux 4.4 and later
Linux x86
Linux x86-64

Symptoms

 When trying to re-add a device to a raid, you get the following message:

[root@oraclesrv oracle]# mdadm /dev/md2 --add /dev/sda1
mdadm: Cannot open /dev/sda1: Device or resource busy

 

 

Changes

 

Cause

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