8.0-RELEASE-p2: boot0cfg yields "vnode_pager_getpages: I/O read error"

[Eugene Grosbein]

On Sun, Mar 07, 2010 at 10:00:02PM -0500, Brian Conway wrote:

> Greetings.  I'm testing NanoBSD images for eventual use in an Alix board
> and have run into an issue with the boot0cfg lines in the update scripts,
> in multiple environments.  Specifically, any use of boot0cfg yields a
> successful output[1], followed by:
> 
> vnode_pager_getpages: I/O read error
> 
> At this point, it looks like the command succeeded, but all reads and
> writes to disk fail:
> 
> # man init
> /usr/bin/man: Device not configured.
> 
> # touch /var/tmp/test
> /usr/bin/touch: Input/output error.

boot0cfg is broken since RELENG_6 (at least) for unknown reason.

For RELENG_6, there was a workaround (use kern.geom.debugflags=16)
but it does not work for RELENG_8 anymore.

Eugene Grosbein