Re: [linux-lvm] snapshot with 2.6.5 kernel

[Heinz Mauelshagen <mauelshagen redhat com>]

On Sun, May 02, 2004 at 11:42:05PM -0700, Karen Shaeffer wrote:
> 
> Hello,
> 
> I am running a patched 2.6.5 kernel and using lvm2. Everything
> looks ok, but the snapshot may be having problems. Else I just
> may be ignorant about how to use the snapshot.
> 
> Here is what I am doing on a generic X86 server. I create a logical
> volume group out of a number of PEs that are properly configured. Then I
> create a logical volume. Then I start to dump a very large tar file
> into the logical volume. As this tar file is inflating the files into
> the logical volume, I then simultaneously create a snapshot volume of
> the recently created logical volume. The very large tar archive that
> was in the process of inflating its contents continues for a while,
> but finally just crashes and hangs at some point.
> 
> Am I missunderstanding how to use snapshot here? Or is this just
> severly broken software? Any advise is appreciated.


You should be able to create a snapshot fine in ythat situation, even though
the creation will happen slow under load.

Can you repeat the case ?
Do you have an oops ? If so, please provide the ksymoops output
for further analysis of the problem.

> 
> Thanks,
> Karen
> -- 
>  Karen Shaeffer
>  Neuralscape, Palo Alto, Ca. 94306
>  shaeffer neuralscape com  http://www.neuralscape.com
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen RedHat com                            +49 2626 141200
                                                       FAX 924446
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