SVN r221788: GEOM_PART: integrity check failed (da0, MBR); Western Digital "My Book"

Andrey V. Elsukov ae at
Mon May 16 07:27:39 UTC 2011

On 16.05.2011 7:48, Brandon Gooch wrote:
> GEOM_PART: integrity check failed (da0, MBR)
> ...
> The message regarding the integrity check seems to be emitted by code
> from that revision.
> What information can I provide to help troubleshoot the issue? I'm new
> to GEOM troubleshooting...

Can you show output of `gpart list da0` from the last worked kernel,
or make a copy of first sector and send it to me.
You can do it with this command:
# dd if=/dev/da0 of=~/mbr count=1

MBR will be saved in your home directory.
Also, recently i added a workaround in r221972, you can disable
integrity checking with sysctl kern.geom.part.check_integrity=0

WBR, Andrey V. Elsukov

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