gmirror failed with error 19.

Andrei Kolu antik at
Sun Oct 16 09:29:26 UTC 2011

2011/10/16 Lev Serebryakov <lev at>

> Hello, Andrei.
> You wrote 15 октября 2011 г., 20:01:51:
> > Before that I saw this error message: "gmirror mirror/gm0: corrupt or
> > invalid GPT data". Solved this problem by starting up system from usb
> flash
> > as livecd and recovering gpt. But I still can't boot from geom mirror.
>   GEOM classes (mirror, stripe, raid3, etc) is not compatible with
>  GPT. GPT want to store its copy on last sector(s) of drive. If your
>  put it on gmirror volume, last sector is occuped by gmirror metadata.
> Hi,

When I boot from memstick with FreeBSD 9 BETA3 I see error "gptboot: invalid
backup GPT header". So FreeBSD 9 is not compatible with geom mirror anymore
because by default installer configure GPT partitions?

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