Re: ASM and EMC PowerPath

  • From: "Radoulov, Dimitre" <cichomitiko@xxxxxxxxx>
  • To: Martin Bach <development@xxxxxxxxxxxxxxxxx>, Harel Safra <harel.safra@xxxxxxxxx>
  • Date: Thu, 07 Apr 2011 16:25:14 +0200


Thank you!
I'm already reading all the notes I was able to find on MOS and google
(including the below mentioned Configuring Oracle ASMLib on Multipath Disks on Linux).
I was only unsure on what to do, given that the disks that are already configured point to the physical paths 
and the fact that this is a live production database.

I doubt that we can change the paths of all disks online, could we?

1. Set ORACLEASM_SCANEXCLUDE to "sd"
2. oracleasm scandisks on all nodes.

I suppose we need to stop all asm and client db instances.


Best regards
Dimitre


On 07/04/2011 16:14, Martin Bach wrote:

Hi there,

You need to actually exclude the native devices in the scan exclude variable, 
and use the pseudo-device instead (scan order variable). A great summary can be 
found here:

Configuring Oracle ASMLib on Multipath Disks on Linux (Doc ID 394956.1)

HTH,

Martin



On 07/04/2011 16:11, Harel Safra wrote:
Make sure to exclude /Dec/sd* - if you use them you won't be utilizing powerpath 

Harel Safra
Sent from my phone.




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