freebsd stable - Jul 2015 - jail: /etc/rc: cannot create /dev/null: Operation not supported

On 2015-07-15 13:52, Per olof Ljungmark wrote:
> FreeBSD 10.2-PRERELEASE #0 r284949
> 
> The jail can be started, but when /etc/rc is executed:
> 
> root at mar:/ # sh -x /etc/rc
> + stty status ^T
> /etc/rc: cannot create /dev/null: Operation not supported
> + trap : 2
> + trap 'echo '\''Boot interrupted'\''; exit
1' 3
> + HOME=/
> + PATH=/sbin:/bin:/usr/sbin:/usr/bin
> + export HOME PATH
> + [ '' = autoboot ]
> + autoboot=no
> + _boot=quietstart
> + /sbin/sysctl -n vfs.nfs.diskless_valid
> /etc/rc: cannot create /dev/null: Operation not supported
> ...
> 
> I have done the procedure several times before but never saw this one
> before and don't know how to get around it.
> 
> Ideas anyone? Any recent changes that can show up like the above?
> 
> Thanks!
If it's trying to create /dev/null, I assume that the jail's /dev
isn't
mounted when /etc/rc is running.  Do you have mount.devfs set in the
jail.conf, or jail_foo_devfs_enable in rc.conf (depending on your
configuration)? For that matter, can you tell if the jail's /dev is
mounted?

- Jamie

On 2015-07-17 01:41, James Gritton wrote:
> On 2015-07-15 13:52, Per olof Ljungmark wrote:
>> FreeBSD 10.2-PRERELEASE #0 r284949
>>
>> The jail can be started, but when /etc/rc is executed:
>>
>> root at mar:/ # sh -x /etc/rc
>> + stty status ^T
>> /etc/rc: cannot create /dev/null: Operation not supported
>> + trap : 2
>> + trap 'echo '\''Boot interrupted'\''; exit
1' 3
>> + HOME=/
>> + PATH=/sbin:/bin:/usr/sbin:/usr/bin
>> + export HOME PATH
>> + [ '' = autoboot ]
>> + autoboot=no
>> + _boot=quietstart
>> + /sbin/sysctl -n vfs.nfs.diskless_valid
>> /etc/rc: cannot create /dev/null: Operation not supported
>> ...
>>
>> I have done the procedure several times before but never saw this one
>> before and don't know how to get around it.
>>
>> Ideas anyone? Any recent changes that can show up like the above?
>>
>> Thanks!
> 
> If it's trying to create /dev/null, I assume that the jail's /dev
isn't
> mounted when /etc/rc is running.  Do you have mount.devfs set in the
> jail.conf, or jail_foo_devfs_enable in rc.conf (depending on your
> configuration)? For that matter, can you tell if the jail's /dev is
> mounted?
> 
> - Jamie
Yes, it's mounted.

Because I can set up jails with an identical procedure on other boxes we
run I suspect something is wrong with the install so I am starting from
scratch with this one.

While doing that, I am trying to sort another problem, namely to boot
zfs on root on a HP Proliant with a P410 controller, but that is another
story.

You know, if it was easy it would not be interesting...

Thanks!