[CentOS] info about hdds in raid

Les Mikesell lesmikesell at gmail.com
Tue Nov 3 00:02:25 UTC 2009

John R Pierce wrote:
> Les Mikesell wrote:
>> If you can see activity lights, you can 'cat /dev/sd? >/dev/null' to 
>> make them busy, one at a time (where ? is a, b, c, etc).
> hahaha, I've done that, only my version is...
>     # dd if=/dev/sdX of=/dev/null bs=512
> but, same difference

It's unfortunately about the best we've got when device names are 
assigned more or less randomly.  NICs are even worse - we need a command 
to make the lights blink there too.

   Les Mikesell at gmail.com

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