Check Software Raid Status CentOS Linux

Check Software Raid Status CentOS Linux

Let’s Say that you have replaced your RAID 1 drive because one failed. How do you know it’s doing what it’s supposed to? As we know a Software/Hardware RAID is classified in Linux as a “MD” device.

go to the command prompt and issue the following command:

cat /proc/mdstat

(note that you may want to script this and save for a later date)

In this configuration we have 3 volumes on 2 hard drives.

the Resync Percentage shows how far the disk is rebuild/recovered. the resync=DELAYED refers to the raid being in a “DEGRADED” State.

When fully rebuilt, it should look as follows:

That’s it!

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