[CentOS] add on sata card relabeling drives, installation

[m.roth at 5-cent.us]

Les Mikesell wrote:
> On Thu, Sep 29, 2011 at 4:19 PM,  <m.roth at 5-cent.us> wrote:
>>
>>>> This type of issue is why relying on /dev/sdX is bad. Mounting based
>>>> on uuid or label when available is best. Unfortunately, there are
>>>> controller cards that present all disks as the same uuid. It makes
>>>> using mdadm that can only see /dev/sdX a pain to use.
<snip>
>> When I build, our PXEboot ks partitions and labels the partitions. When
>> I add or replace, I make the partition, the fs, and e2label them. I've
>> gotten to really appreciate labeling. I hate the UUIDs - they're
>> ludicrously too long, and bear no relationship to what device they are,
>> or where they go.
>
> What happens when you move the disks around among machines?  Or don't
> you ever do that after they contain data?

Other than offline backups, we don't move disks, other than to replace.

       mark