Re: [linux-lvm] ERROR "parameter error" setting up snapshot copy on write exception table

From: Marc Grimme <grimme@atix.de>
To: linux-lvm@sistina.com, Emanuel Quass <emanuel.quass@temic.com>
Subject: Re: [linux-lvm] ERROR "parameter error" setting up snapshot copy on write exception table
Date: Mon Jan 21 06:11:01 2002	[thread overview]
Message-ID: <21530000.1011615003@methusalix> (raw)
In-Reply-To: <200201211146.g0LBkui23525@in-cadcae4.ing.temic.de>

Hi

--On Montag, Januar 21, 2002 12:46:56 +0100 Emanuel Quass 
<emanuel.quass@temic.com> wrote:

> Hi
>
> I rebooted the server several times (and tried several kernel-versions)
> but  every time I got the same error!
> The problem is (afaik see) the snapshot. I think if I can get rid of the
> snapshot everything will work all right. But I am not able to remove the
> snapshot because the Volumegroup is not active ......
I had exactly the same problem and the same thoughts but I really don't 
know how to delete a snapshot of an inactive volumegroup and I couldn't 
find any program that was provided and did the job. Perhaps you can recover 
some old configurations without snapshot with vgcfgrestore and stuff. But 
I'm not really sure if this works cause the problem went away after I 
rebooted the machine and was never to be seen again. And I was happy and 
didn't touch this system again.

And if vgcfgrestore helps, what if you create a snapshot and then some 
other vgs and lvs and then your snapshot gets corrupt like this, can 
vgcfgrestore help here also?

So I would say I'm out. :-(
>
> Is there a way to remove the snapshot (the volumegroup can't be made
> active)  without touching the other logical volumes ?
Would be really interesting to know the answer.
>
>
> Am Montag, 21. Januar 2002 11:32 schrieb Marc Grimme:
>> Last time I had this problem, I just rebooted the machine and everything
>> was back to normal.
>> But I don't know the reason was and anything.
>> It just worked after a reboot. Sounds a bit like Windows :-).
>>
>> --On Sonntag, Januar 20, 2002 18:41:13 +0100 Emanuel Quass
>>
>> <emanuel.quass@temic.com> wrote:
>> > Hi
>> >
>> > I had a very strange error on our Linux-server! Maybe someone can help
>> > me because it's our production server. I rebooted the Server and
>> > afterwards I had an error like:
>> >
>> > vgchange -- ERROR "parameter error" setting up snapshot copy on write
>> > exception table for "/dev/datenvg/mailsnap"
>> >
>> > I use a 2.4.17 kernel with lvm-1.0.1 I just upgraded from 2.4.9 with
>> > "LVM version 1.0.1-rc2(30/08/2001)" (thats whats written inside the
>> > module)
>> >
>> > There are 2 logical columes inside "/dev/datenvg" 1. daten 2. mail and
>> > of the second lv I made a snapshot. After the reboot ..... (see above)
>> >
>> > Is there a chance of getting the data back?
>> >
>> > Thanks in advance
>> >
>> > 	Emanuel Quass
>> >
>> >
>> > _______________________________________________
>> > linux-lvm mailing list
>> > linux-lvm@sistina.com
>> > http://lists.sistina.com/mailman/listinfo/linux-lvm
>> > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
>
> --
>
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>
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>
> +++++++++++++++++++++++++++++++++++
> Emanuel Quass
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> +++++++++++++++++++++++++++++++++++
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> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html

--

Gruss/Regards,

Marc Grimme

**
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