[CentOS] add on sata card relabeling drives, installation

[Les Mikesell]

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.
>>
>> So how do you propose getting a uuid or label on a disk in the first
>> place if you can't identify which is which physically?  And how do you
>> know which to move when you want the content in some other box?
>
> 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?

-- 
  Les Mikesell
    lesmikesell at gmail.com