Re: Problem with SAS disk

On 2009-03-05, Konstantinos Agouros <> wrote:
> Hello,
>
> I have a problem with a 5220:
>
> It has 4 Seagate 146GB SAS disks. probe-scsi-all gives me:
> Now if I look at the situation with format disk2 seems to have a problem:
>
> 2. c1t2d0 <SEAGATE-ST914602SSUN146G-0603-136.73GB>

[ ... ]

> The partition table of disk2 also looks strange:
>
> Total disk sectors available: 286722911 + 16384 (reserved sectors)
>
> Part Tag Flag First Sector Size Last Sector
> 0 usr wm 34 136.72GB 286722911
> 1 unassigned wm 0 0 0
> 2 unassigned wm 0 0 0
> 3 unassigned wm 0 0 0
> 4 unassigned wm 0 0 0
> 5 unassigned wm 0 0 0
> 6 unassigned wm 0 0 0
> 8 reserved wm 286722912 8.00MB 286739295
>
> Since I need to mirror this disk I need a standard vtoc onit. Anybody has
> a clue how to repair it?

Yep! No experience with SAS disks, but plenty of experience
with this problem in both SCA SCSI disks and FC-AL disks. Your disk has
been formatted for use in a RAID assembly. That 8.00 MB partition at
the end keeps information about the RAID array that it is part of.

To get rid of it try this:

format -e c1t2d0
label
(and it will offer you a choice of two label types.
Select the first of the two offered types. Once this is
done, you can partition it normally.)

Good Luck,
DoN.

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