Mailinglist Archive: opensuse (1839 mails)

[eddie <eddieleprince@xxxxxxx>]

On Friday 17 Sep 2010 23:00:03 Greg Freemyer wrote:
> On Fri, Sep 17, 2010 at 4:26 PM, Greg Freemyer <greg.freemyer@xxxxxxxxx> 
wrote:
> > On Fri, Sep 17, 2010 at 4:22 PM, dwgallien <dwgallien@xxxxxxxxx> wrote:
> > > > I am currently using kernel 2.6.34-12-desktop.  I tried upgrading to
> > > > 2.6.34.4 and found that X would not work.  Downgrading resolved that
> > > > issue.  So I was pleased to see a new kernel out 2.6.34.7 However on
> > > > trying this update my system wouldn't boot.  It gives the following
> > > > error message.
> > > >
> > > > mount: unknown filesystem type 'ext4'
> > > >
> > > > Has the new kernel not been built with support for ext4? Has anyone
> > > > else updated to the new kernel and found this problem with ext4? Is
> > > > there a simple solution or do I need to recompile the kernel?
> > > >
> > > > Thanks in advance.
> > > > Eddie
> > >
> > > I don't remember if ext4 is in the kernel or not (I'm still using ext3).
> > >  Whatever, a simple solution is to add it to the initrd via Yast
> > > sysconfig editor, the initrd will be rebuilt upon exit.  Can also be
> > > done from the command line by editing /etc/sysconfig/kernel and then
> > > running mkinitrd.
> >
> > If it's not already in the just released kernel by default, it's a bug
> > pure and simple.
> >
> > I'll update my system now and try it out.
> >
> > Greg
>
> I did not test initrd which is used during boot, but I did test the
> new kernel itself and I see no problems with ext4.
>
> So there should not be any reason to recompile.
>
> == My test after booting a machine with no ext4 partitions
>
> # create a loopback file to mount
> gaf@tiger3-64bit:~/temp> dd if=/dev/zero of=tmp_fs bs=1M count=5000
> 5000+0 records in
> 5000+0 records out
> ...
>
> # put a ext4 fs on it
> gaf@tiger3-64bit:~/temp> sudo /sbin/mkfs.ext4 tmp_fs
> mke2fs 1.41.11 (14-Mar-2010)
> tmp_fs is not a block special device.
> Proceed anyway? (y,n) y
> ...
> # mount it loopback
>
> gaf@tiger3-64bit:~/temp> sudo mount -t ext4 -o loop tmp_fs /mnt
>
> # verify it mounted
> gaf@tiger3-64bit:~/temp> mount
> ...
> /dev/loop0 on /mnt type ext4 (rw)
>
> # make sure the ext4 module is now loaded.  (It was not prior to these
> steps) gaf@tiger3-64bit:~/temp> lsmod | grep ext4
> ext4                  401916  1
> jbd2                  100410  1 ext4
> crc16                   1715  1 ext4
>
> # verify I'm running the just released kernel
> gaf@tiger3-64bit:~/temp>  uname -a
> Linux tiger3-64bit 2.6.34.7-0.2-desktop #1 SMP PREEMPT 2010-09-14
> 14:21:06 +0200 x86_64 x86_64 x86_64 GNU/Linux
>
> # all looks good
>
> Greg

Thanks All

Something must have gone wrong with the update.  I went back to yast and 
discovered that it was showing the old kernel as the one that was installed, 
and but all the supporting packages were showing the new version.  So I tried 
updating the kernel again. This time it worked, and so far everything seems to 
be okay.

Eddie
-- 
Delight thyself also in the Lord and He shall give thee the desires of thine 
heart.
Psalm. 37:4
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