Re: ASM disk corruption
- From: "Amaral, Rui" <Rui.Amaral@xxxxxxxxxxxxxxxx>
- To: "'andrew.kerber@xxxxxxxxx'" <andrew.kerber@xxxxxxxxx>, "'harel.safra@xxxxxxxxx'" <harel.safra@xxxxxxxxx>
- Date: Mon, 22 Nov 2010 16:09:56 -0500
You have to dd out to a file the first 200 megs of the lun for diagnostics.
Regardless, Peter you will have to rebuild and restore and recover.
From: Andrew Kerber [mailto:andrew.kerber@xxxxxxxxx]
Sent: Monday, November 22, 2010 04:02 PM
To: Harel Safra <harel.safra@xxxxxxxxx>
Cc: pnedeljkovich@xxxxxxxxxxxxxxx <pnedeljkovich@xxxxxxxxxxxxxxx>; Amaral, Rui;
oracle-l@xxxxxxxxxxxxx <oracle-l@xxxxxxxxxxxxx>
Subject: Re: ASM disk corruption
Yup, thats what we did too. Like I said, we never did figure out how it got
overwritten. Problem was our smallest possible LUN size was 17G, thats an
awful lot of wasted space once you make 3 (or 5) of those. Of course thin
provisioning might allow us to work around that eventually, but that seems like
a technology that isnt well tested in Oracle clusterware.
Anyway, thats kind of OT. I will be really interested to see if the OP can
find a cause of the problem.
On Mon, Nov 22, 2010 at 2:40 PM, Harel Safra
<harel.safra@xxxxxxxxx<mailto:harel.safra@xxxxxxxxx>> wrote:
We have a dedicated disk group for ocr/voting that's just 1GB and doesn't
contain data files.
It made sense (to me at least...) to separate OCR from other data for later
database cloning, etc.
Harel Safra
On 22/11/2010 21:39, Andrew Kerber wrote:
MOS recommendation was to use normal or high redundancy instead of external.
Like we could waste all that space.
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
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