bad drive

trackstar2000 · 07-27-2020, 04:20 PM

Our HPC server has a bad drive indicator lid up on one of the drives. On the OS (Ubuntu), is there a command that will show me which raid level it is on (I am sure its on Raid 5) but need to verify first before I take action?

Thanks,
TT

berndbausch · 07-27-2020, 06:38 PM

If you use software RAID, the command mdadm -D DEVICEFILE shows you the RAID level. DEVICEFILE refers to the array and is normally something like /dev/md127. You can also check /proc/mdstat.

If it's hardware RAID, you should have a software tool for configuring the RAID interface. Which tool that is depends on the interface, for example hpssacli for HPE Smartarrays.

trackstar2000 · 07-27-2020, 08:11 PM

Quote:

Originally Posted by berndbausch

If you use software RAID, the command mdadm -D DEVICEFILE shows you the RAID level. DEVICEFILE refers to the array and is normally something like /dev/md127. You can also check /proc/mdstat.

If it's hardware RAID, you should have a software tool for configuring the RAID interface. Which tool that is depends on the interface, for example hpssacli for HPE Smartarrays.

I will talk to support tomorrow. I believe its a hardware raid. With other servers like Dell (this one is not), the rebuild process is to just remove the bad drive and replace with a new drive, the rebuild is automatically without even interacting with the OS.

TT