`gpart show` and secondary GPT header

[Marcel Moolenaar]

On Jun 13, 2009, at 5:55 PM, James R. Van Artsdalen wrote:

> Marcel Moolenaar wrote:
>> In any case: the primary and secondary GPT headers
>> and tables are in fact on the disk. They're there,
>> trust me :-)
>
> Unless you're using a Silicon Image 3124 controller :-(
>
> FYI - the option ROM on this card appears to clobber the secondary GPT
> table.  Moving disks to a 3124 results in this:

> Jun 13 06:31:42 bigback kernel: GEOM: ad4: the secondary GPT table is
> corrupt or invalid.
> Jun 13 06:31:42 bigback kernel: GEOM: ad4: using the primary only --
> recovery suggested.
> Jun 13 06:31:42 bigback kernel: GEOM: ad12: the secondary GPT table is
> corrupt or invalid.
> Jun 13 06:31:42 bigback kernel: GEOM: ad12: using the primary only --
> recovery suggested.

Are you using gmirror by any chance?

-- 
Marcel Moolenaar
xcllnt at mac.com