On 04/12/2013 01:01 AM, David Miller wrote:
> You simply match up the Linux /dev/sdX designation with the drives
> serial number using smartctl. When I first bring the array online I
> have a script that greps out the drives serial numbers from smartctl
> and creates a neat text file with the mappings. When either smartd or
> md complain about a drive I remove the drive from the RAID using mdadm
> and then pull the drive based on the mapping file. Drive 0 in those
> SuperMicro SAS/SATA arrays are always the lowest drive letter and goes
> up from there. If a drive is replaced I just update the text file
> accordingly. You can also print out the drive serial numbers and put
> them on the front of the removable drive cages. It is not as elegant
> as a blinking LED but it works just as well. I have been doing it like
> this for 6 plus years now with a few dozen SuperMicro arrays. I have
> never pulled a wrong drive.
It's great the the Supermicro controllers can do this, but I know from
experience that in the general case with multiple controllers and on
CentOS 6 this will not work. Just a quick caveat on that.....
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