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List:       evms-devel
Subject:    Re: [Evms-devel] BBR Feature Problem?
From:       Jake Colman <colman () ppllc ! com>
Date:       2002-10-24 14:13:04
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Kevin,

I'm sorry to cop-out on this, but I needed to get my drives up and running.
I removed the BBR feature, recreated the volumes, and began moving my data
around.

I generally try to do a better job assisting in beta testing but, this time
around, I had to move on and can no longer reproduce the problem.

...Jake

    KC> On Wednesday 23 October 2002 09:02, Jake Colman wrote:
    >> I created an evms volume with an ext3 filesystem and added the BBR
    >> feature to it.  I mounted the evms partition on /mnt and copied data
    >> from a non-evms partition to the evms partition.  I them unmounted the
    >> old partition and manually mounted the evms partition in its place.
    >> All was well.  I then edited /etc/fstab to make these changes
    >> permanent.
    >>
    >> Upon reboot, the kernel consistently paniced with an assertion failure
    >> in transaction.c, a problem with the ext3 journal file.
    >>
    >> I recreated the evms partition without the BBR feature, redid the same
    >> steps and all is now well.
    >>
    >> I know that ext3 filesystems on evms volumes has been extensively
    >> tested.  Has the BBR feature been similarly tested in this type of
    >> situation or is it still beta quality?

    KC> Hi Jake,

    KC> I have just run a similar test on one of my machines. I created a
    KC> segment, added BBR, and mkfs'd with ext3. I copied the contents of
    KC> /var to the volume, and added the volume to /etc/fstab to mount over
    KC> /var. I rebooted and everything seems to come up fine with the BBR
    KC> volume mounted.

    KC> Now granted, I'm not running a lot of services on this machine, so
    KC> there isn't a whole lot of activity happening on that volume. But
    KC> based on your email, it seems like the problem is happening
    KC> immediately. Can you give me an idea of what apps/services are
    KC> accessing that volume?

    KC> You said in a previous email that you ran this test using /var. Have
    KC> you tried this with other mount points? If so, are you getting the
    KC> same errors?

    KC> Do you know where in transaction.c the assertion is failing? Which
    KC> line? I can try to add breakpoints in my debugger to see if my
    KC> machine is even going near that code path.

    KC> --
    KC> Kevin Corry
    KC> corryk@us.ibm.com
    KC> http://evms.sourceforge.net/

-- 
Jake Colman                     

Principia Partners LLC                  Phone: (201) 209-2467
Harborside Financial Center               Fax: (201) 946-0320
902 Plaza Two                          E-mail: colman@ppllc.com
Jersey City, NJ 07311                  www.principiapartners.com


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