GEOM_PART: integrity check failed (mirror/gm0, MBR) on FreeBSD 8.3-RELEASE

[Mark Knight]

I just did a source upgrade from 8.2 to 8.3. System boots but has this
warning:

GEOM_PART: integrity check failed (mirror/gm0, MBR)

Google points to issues with FreeBSD 9 and the need to migrate to GPT
but I wasn't expecting this with 8.3!

Are there any quick fixes to eliminate this warning or is it safe to
ignore please?

sudo gpart list:

Geom name: mirror/gm0
modified: false
state: CORRUPT
fwheads: 255
fwsectors: 63
last: 976773166
first: 63
entries: 4
scheme: MBR
Providers:
1. Name: mirror/gm0s1
Mediasize: 500107829760 (465G)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 32256
Mode: r2w2e3
attrib: active
rawtype: 165
length: 500107829760
offset: 32256
type: freebsd
index: 1
end: 976773167
start: 63
Consumers:
1. Name: mirror/gm0
Mediasize: 500107861504 (465G)
Sectorsize: 512
Mode: r2w2e5

Geom name: mirror/gm0s1
modified: false
state: OK
fwheads: 255
fwsectors: 63
last: 976773104
first: 0
entries: 8
scheme: BSD
Providers:
1. Name: mirror/gm0s1a
Mediasize: 498597888000 (464G)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 32256
Mode: r1w1e1
rawtype: 7
length: 498597888000
offset: 0
type: freebsd-ufs
index: 1
end: 973823999
start: 0
2. Name: mirror/gm0s1b
Mediasize: 1509941760 (1.4G)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 381713920
Mode: r1w1e0
rawtype: 1
length: 1509941760
offset: 498597888000
type: freebsd-swap
index: 2
end: 976773104
start: 973824000
Consumers:
1. Name: mirror/gm0s1
Mediasize: 500107829760 (465G)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 32256
Mode: r2w2e3
--
Mark A. R. Knight finger: ma...@knigma.org
Tel: +44 7880 556751 http://www.knigma.org/
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[Andrey V. Elsukov]

On 20.04.2012 22:43, Mark Knight wrote:
> I just did a source upgrade from 8.2 to 8.3. System boots but has this warning:
>
> GEOM_PART: integrity check failed (mirror/gm0, MBR)
> Google points to issues with FreeBSD 9 and the need to migrate to GPT but I wasn't expecting this
> with 8.3!

It is not necessary to migrate to GPT. You should understand why it is happens.
You can enable verbose boot mode and you will see why it complains.

> Are there any quick fixes to eliminate this warning or is it safe to ignore please?
> sudo gpart list:
>
> Geom name: mirror/gm0
> modified: false
> state: CORRUPT

> last: 976773166
> first: 63

> 1. Name: mirror/gm0s1
> Mediasize: 500107829760 (465G)

> Consumers:
> 1. Name: mirror/gm0
> Mediasize: 500107861504 (465G)

The problem is that mirror/gm0 provides only 500107861504 bytes, but the MBR expects
500107829760 + 32256 bytes.

--
WBR, Andrey V. Elsukov

[admi...@gmail.com]

Hello There,
Are there a way to fix this issue after update FreeBSD 8.2 to 8.3?
Or just do not bother with that message:
GEOM_PART: integrity check failed (mirror/gm0, MBR) ?

Thanks in anyway!