FS corruption between 8-STABLE and 7-STABLE

[Arnaud Lacombe]

Hi,

On Wed, Sep 7, 2011 at 9:54 AM, John Baldwin <jhb at freebsd.org> wrote:
> On Tuesday, September 06, 2011 5:55:09 pm Arnaud Lacombe wrote:
>> Hi,
>>
>> I got a strange boot failure when booting a FreeBSD 7-stable after a
>> 8-stable kernel, with a FreeBSD 7.4 kernel:
>>
>> pid 100 (fsck_ufs), uid 0: exited on signal 8
>> pid 101 (fsck_ufs), uid 0: exited on signal 8
>> WARNING: R/W mount of / denied.  Filesystem is not clean - run fsck
>> WARNING: R/W mount of / denied.  Filesystem is not clean - run fsck
>>
>> it would seem that going 8-STABLE change the filesystem in such a way
>> 7-STABLE cannot be booted after.
>>
>> Thanks guys ...
>
> I boot 8 kernels on machines with a 7 world and back to a 7 kernel all the
> time without any issues.  Did you upgrade your world to 8 and then try to boot
> it with a 7.4 kernel?
>
No.

 - Arnaud