Re: ASM and EMC PowerPath

From: Harel Safra <harel.safra_at_gmail.com>
Date: Thu, 7 Apr 2011 17:11:10 +0300
Message-ID: <BANLkTintMn+mBNrUiq1n6bLVLv87E_AVrA_at_mail.gmail.com>

Use only /Dec/emcpower*
Make sure to exclude /Dec/sd* - if you use them you won't be utilizing powerpath

Harel Safra
Sent from my phone.
On Apr 7, 2011 5:04 PM, "Radoulov, Dimitre" <cichomitiko_at_gmail.com> wrote:
> Hi all,
>
> RAC on
> Linux 2.6.18-92.el5 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
> Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit
Production
> ASMLib
>
> We need to add disks to the Production environment for the first time.
>
> Given the example below (querydisk on an existing disk):
>
> # /etc/init.d/oracleasm querydisk -d BLOB
> Disk "BLOB" is a valid ASM disk on device [66, 97]
>
> # /etc/init.d/oracleasm querydisk -p BLOB
> Disk "BLOB" is a valid ASM disk
> /dev/sdam1: LABEL="BLOB" TYPE="oracleasm"
> /dev/sdbc1: LABEL="BLOB" TYPE="oracleasm"
> /dev/emcpowerz1: LABEL="BLOB" TYPE="oracleasm"
>
> In /proc/partitions we have:
>
> 66 97 31457264 sdam1
>
>
> ORACLEASM_SCANORDER and ORACLEASM_SCANEXCLUDE are both set to "" in
> /etc/sysconfig/oracleasm.
>
> So the question is: which path should we use with the createdisk
> command (oracleasm createdisk <diskname> </path>)?
> Is the multipathing used , given querydisk -d returns the major/minor
> numbers of the phisical device?
>
> After adding and marking the disks for asm from one node, we'll need to
> run oracleasm scandisks on the remaining nodes,
> is it safe to run this command (scandisks) in a live production
> environment?
>
>
> Thank you!
>
> Dimitre
>
>
>
> --
> http://www.freelists.org/webpage/oracle-l
>
>

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Received on Thu Apr 07 2011 - 09:11:10 CDT