Date: Sun, 04 Jul 2010 15:57:45 +0200 From: Dimitry Andric <dimitry@andric.com> To: Daniel O'Connor <doconnor@gsoft.com.au> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: GEOM/bsdlabel regression in 8.x? Message-ID: <4C309359.8000502@andric.com> In-Reply-To: <BC67251C-1621-4291-B0C1-A28CC404E417@gsoft.com.au> References: <BC67251C-1621-4291-B0C1-A28CC404E417@gsoft.com.au>
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On 2010-07-04 14:24, Daniel O'Connor wrote:
...
> mkdir /mnt/test
> mount /dev/md0s1a /mnt/test
> bsdlabel -e /dev/md0s1
>
> Then you get..
> "bsdlabel: Class not found"
First unmount /dev/md0s1a, or the device /dev/md0s1 will be in use, and
opening it for read/write (as bsdlabel probably does) will fail.
Alternatively, you can turn on the "footshooting" debug flag in geom:
Protection mechanisms in the geom(4) subsystem might prevent boot0cfg
from being able to update the MBR on a mounted disk. Instructions for
temporarily disabling these protection mechanisms can be found in the
geom(4) manpage. Specifically, do a
sysctl kern.geom.debugflags=0x10
to allow writing to the MBR, and restore it to 0 afterwards.
and try again. This may not work as expected though. :)
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