[CentOS] Strange performance issue on CentOS 6.7 server

Fri Feb 5 01:23:20 UTC 2016
Warren Young <wyml at etr-usa.com>

On Feb 3, 2016, at 3:23 PM, Alfred von Campe <alfred at von-campe.com> wrote:
> On Feb 3, 2016, at 17:10, Warren Young wrote:
>> smartctl can see through several different types of RAID controller to the underlying physical disks via its -d option.
> This is what I have:
> # smartctl --all /dev/sda
> smartctl 5.43 2012-06-30 r3573 [i686-linux-2.6.32-573.12.1.el6.i686] (local build)
> Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
> Vendor:               IBM     
> Product:              ServeRAID M5110e

A bit of Googling says that’s an LSI 2208 based card.

So, try smartctl -a -d megaraid,0

If that works, you should be able to walk through each disk by incrementing that trailing number.  Then, you can add -t flags to do active tests.