FreeBSD 9.1 and SU+J

[Bas Smeelen]

On 11/04/2012 11:18 PM, Doug Hardie wrote:
> On 4 November 2012, at 07:04, Bas Smeelen wrote:
>
>> On 11/04/2012 03:00 PM, Bas Smeelen wrote:
>>> On 11/04/2012 02:11 PM, RW wrote:
>>>> On Sun, 04 Nov 2012 11:44:28 +0100
>>>> Bas Smeelen wrote:
>>>>
>>>>> On 11/03/2012 07:30 PM, Herbert J. Skuhra wrote:
>>>>>> On 03.11.2012 13:48, Doug Hardie wrote:
>>>>>>
>>>>>>> I didn't notice that journaling is on by default and now dump is
>>>>>>> failing.  The only way I can see to disable journaling requires
>>>>>>> that the file system be dismounted, or read-only.  This is a
>>>>>>> remote machine and journaling is on root.  Is there any other way
>>>>>>> that would not require me to make a long trip out to the site?
>> I guess I was a little off here, it actually worked for / also
>> See further below for the whole story
>> This was all done remote with ssh
>>
>> $ mount
>> /dev/da0p2 on / (ufs, local, soft-updates)
>> devfs on /dev (devfs, local, multilabel)
>> /dev/da0p3 on /tmp (ufs, local, soft-updates)
>> /dev/da0p4 on /var (ufs, local, soft-updates)
>> /dev/da0p5 on /usr (ufs, local, soft-updates)
>> $ su
>> Password:
>> root at osebart:/usr/home/Freebee # rm /.sujournal
>> root at osebart:/usr/home/Freebee # rm /var/.sujournal
>> root at osebart:/usr/home/Freebee # rm /tmp/.sujournal
>> root at osebart:/usr/home/Freebee # rm /usr/.sujournal
>> root at osebart:/usr/home/Freebee # uname -a
>> FreeBSD osebart.ose.nl 9.1-RC2 FreeBSD 9.1-RC2 #0 r241106: Mon Oct 1
>> 18:26:44 UTC 2012
>> root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
> I can't get that to work on i386.  Here is /etc/rc.d/fsck:
> ____________________________________
>          fi
>
>          echo "Ready for tunefs"
>          /sbin/tunefs -j disable /dev/da0p2
> }
>
> load_rc_config $name
> run_rc_command "$1"
>
> ____________________________________
>
>
> reboot computer and here is the output from messages:
>
> ____________________________________
>
>
> Nov  4 14:07:19 Router kernel: Ready for tunefs
> Nov  4 14:07:19 Router kernel: Clearing journal flags from inode 4
> Nov  4 14:07:19 Router kernel: tunefs: soft updates journaling cleared but soft updates still set.
> Nov  4 14:07:19 Router kernel: tunefs: remove .sujournal to reclaim space
> Nov  4 14:07:19 Router kernel: Mounting local file systems:.
>
> ____________________________________
>
> and the output from mount:
>
> Router# mount
> /dev/da0p2 on / (ufs, local, journaled soft-updates)
> devfs on /dev (devfs, local, multilabel)
>
> ____________________________________
>
> Journaled is still on after 2 reboots.
>
> Router# uname -a
> FreeBSD Router 9.1-RC2 FreeBSD 9.1-RC2 #0 r241133: Tue Oct  2 17:11:45 UTC 2012     root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>
> -- Doug

Hi Doug

This is bad. It did not work for me that way either on the / partition, but 
it worked on the other partitions.
Because I have seperate /tmp /var and /usr partition I was able to mount the 
/ partition readonly in multiuser mode with mount -o ro / and then tunefs -j 
disable and right after that reboot.
It seems that somehow when the / partition gets mounted after disabling the 
journal, journaled soft updates is still set and thus still enabled, but 
with a reboot it gets cleared?
I don't really understand this.



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