[linux-lvm] snapshot with 2.6.5 kernel

Karen Shaeffer shaeffer at neuralscape.com
Sun May 16 21:45:01 UTC 2004

On Tue, May 11, 2004 at 01:13:22PM +0200, Heinz Mauelshagen wrote:
> On Sun, May 02, 2004 at 11:42:05PM -0700, Karen Shaeffer wrote:
> > 
> > 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.

Hello Heinz,

Sorry for the delay in responding, but I am very busy.

Yes, the problem is repeatable. The hardware included an external
RAID array that was accessed with the LSI fibre channel HBA, which
I believe is known to be buggy. So, I have removed this hardware
from my test lab and will be conducting additional testing. I will
provide full details, if I encounter additional problems.

BTW, can you please advise me of the time frame for progress with
LVM2 and the 2.6.x kernel. Is a patchset planned to support the
2.6.6 kernel with respect to snapshot?

Also, can you comment on the evms alternative. It seems they already
have a release supporting the 2.6.6 kernel. My understanding is that
this latest evms release is production ready. Can you discuss LVM2's
status in comparison?

 Karen Shaeffer
 Neuralscape, Palo Alto, Ca. 94306
 shaeffer at neuralscape.com  http://www.neuralscape.com

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