geom mirror now rebuilding on every reboot?

Kevin Oberman kob6558 at
Mon Aug 6 16:33:06 UTC 2012

On Mon, Aug 6, 2012 at 9:26 AM, Maksim Yevmenkin
<maksim.yevmenkin at> wrote:
> On Mon, Aug 6, 2012 at 9:23 AM, Garrett Cooper <yanegomi at> wrote:
>> On Mon, Aug 6, 2012 at 8:34 AM, Maksim Yevmenkin
>> <maksim.yevmenkin at> wrote:
>>> Michael,
>>>> Something in -current and recently MFC'd to -stable is causing all of my
>>>> gmirror drives to rebuild on reboot :-(
>>>> Being remote and these being production machines, I suspect SVN r237929
>>>> and r237930 in -current and SVN r238500 to -stable but haven't yet been
>>>> able to prove it.
>>>> Is anyone else seeing this?
>>> yes, i've seem something similar only much, much worse. one of our
>>> production systems completely kept loosing its gmirror volumes on
>>> every reboot. it looked like gmirror metadata were completely
>>> corrupted. rebuilding mirrors and reverting back to previous kernel
>>> seemed to work. someone else is tracking it down.
>>     Is this is in 9.1 -PRERELEASE, -RELEASE (or whatever the official
>> label is...)? If so, it seems like this would be a ship blocker.
> sorry. its releng_9/9-stable. gmirrors are on two ssds. we use gpt and
> gmirror individual partitions, not entire disks.

I may well be confused, but I don't understand how you can use GPT for
a single partition. Looks to me like a disk is GPT or legacy.
Declaring which is the first command when setting up a new disk.
R. Kevin Oberman, Network Engineer
E-mail: kob6558 at

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