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Dell PowerEdge Systems Red Hat Enterprise Linux 8 Release Notes

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After system reboot, Disk data format (DDF) devices are not listed in /proc/mdstat

Description
Disk data format (DDF)-based MD virtual disk (VD) devices are not listed in the /proc/mdstat file, if there are more than one MD VD devices, after rebooting the system.
Cause
Not available
Workaround
After creating the MD VD devices and before rebooting the system, run the following command: 
mdadm --detail --scan >> /etc/mdadm.conf
NOTE:Verify the file before system reboot to confirm that the MD VD devices created earlier are not altered.

For more information, see Red Hat Knowledge Base article 4990891.

Systems affected
All Dell PowerEdge servers
Applies to

Red Hat Enterprise Linux 8.0 and later

Tracking number
152384

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