Re: Disks not detected during ASM setup 11gR2

From: sundar mahadevan <sundarmahadevan82_at_gmail.com>
Date: Sat, 1 Jan 2011 23:35:09 -0500
Message-ID: <AANLkTinz1OkB9B5d7EXbhJR8KxY6rk2jAKwKciJYfa9J_at_mail.gmail.com>

Thanks Sreejith. You provided me with the hint and I just configured and created the asmdisk with asmlib and there it was detected. I did not know that I have to configure asmlib before starting the installer. Thanks a lot.

On Sat, Jan 1, 2011 at 11:11 PM, sundar mahadevan < sundarmahadevan82_at_gmail.com> wrote:

> Hi Sreejith,
> Thanks for the info on grid home. Yes, I installed ASMlib but are there any
> configurations to make the LUN as a candidate disk? So should I do it before
> I run the grid installer? Please confirm. Thanks.
>
>
> On Sat, Jan 1, 2011 at 10:05 PM, Sreejith Nair <sreejithsna_at_gmail.com>wrote:
>
>> Hi Sundar,
>> I have just started to setup 11gR2 RAC on 2 Linux boxes with 100gb. lun
>> SAN. With 11gR2, there are a few changes like
>> 1. ASM,OCR and VD is part of a single home called grid home.
>> 2. Database software binaries in ORACLE_HOME.
>> I have just downloaded ASMlib to mark my LUN as a candidate disk,so that
>> my grid infrastructure installation could detect it. However I did not try
>> that yet. Did you try with ASMlib?
>>
>> Cheers,
>> SSN
>> -- Sreejith Nair
>> Sent from my Android phone with K-9 Mail. Please excuse my brevity.
>>
>> "sundar mahadevan" <sundarmahadevan82_at_gmail.com> wrote:
>>
>> >Hi All,
>> >Wish you all a very happy new year. I am trying to setup a 11gR2 non
>> >RAC
>> >with ASM on OEL 5.4 I am having trouble setting up ASM. I have an ACER
>> >laptop with 4GB RAM and 320 GB hard drive each. Would appreciate if you
>> >could help me with the following:
>> >
>> >1) ASM is defined as a feature. So is there a file system underneath or
>> >is
>> >it working on raw devices? I did not find a straight answer for this.
>> >2) To setup 11gR2 RAC with ASM and 11gR2 NON RAC with ASM, am I correct
>> >in
>> >understanding that 2 separate binaries are required on 2
>> >laptops/servers
>> >meaning there will be 4 oracle homes: 1 for ASM, 1 for RAC binary, 1
>> >for Non
>> >RAC binary, 1 for clusterware
>> >3) I installed a 11gR2 non rac binary successfully (just the software
>> >no
>> >database). Now I am trying to install ASM with grid infrastructure
>> >runinstaller. My disks are not detected at this stage. The default OS
>> >setup
>> >came with 4 logical volumes and I created a logical volume LogVol04 of
>> >size
>> >105GB to be used for ASM. I used iscsi initiator and detected it as
>> >/dev/sdb. What am I doing wrong here. Should n't /dev/sdb1 be detected
>> >by
>> >asm for disks? Please advice. Many Thanks for your help.
>> >
>> >*Before iscsi initiator start:
>> >*
>> >root_at_sunny2 /root$ fdisk -l
>> >
>> >Disk /dev/sda: 320.0 GB, 320072933376 bytes
>> >255 heads, 63 sectors/track, 38913 cylinders
>> >Units = cylinders of 16065 * 512 = 8225280 bytes
>> >
>> > Device Boot Start End Blocks Id System
>> >/dev/sda1 * 1 13 104391 83 Linux
>> >/dev/sda2 14 38913 312464250 8e Linux LVM
>> >root_at_sunny2 /root$
>> >
>> >*After iscsi initiator start:*
>> >
>> >root_at_sunny2 /root$ fdisk -l
>> >
>> >Disk /dev/sda: 320.0 GB, 320072933376 bytes
>> >255 heads, 63 sectors/track, 38913 cylinders
>> >Units = cylinders of 16065 * 512 = 8225280 bytes
>> >
>> > Device Boot Start End Blocks Id System
>> >/dev/sda1 * 1 13 104391 83 Linux
>> >/dev/sda2 14 38913 312464250 8e Linux LVM
>> >
>> >Disk /dev/sdb: 104.8 GB, 104857600000 bytes
>> >255 heads, 63 sectors/track, 12748 cylinders
>> >Units = cylinders of 16065 * 512 = 8225280 bytes
>> >
>> > Device Boot Start End Blocks Id System
>> >/dev/sdb1 1 12748 102398278+ 83 Linux
>> >root_at_sunny2 /root$
>> >
>> >
>> >root_at_sunny2 /root$ ll /dev/VolGroup01/*
>> >lrwxrwxrwx 1 root root 31 Jan 1 17:40 /dev/VolGroup01/LogVol00 ->
>> >/dev/mapper/VolGroup01-LogVol00
>> >lrwxrwxrwx 1 root root 31 Jan 1 17:40 /dev/VolGroup01/LogVol01 ->
>> >/dev/mapper/VolGroup01-LogVol01
>> >lrwxrwxrwx 1 root root 31 Jan 1 17:40 /dev/VolGroup01/LogVol02 ->
>> >/dev/mapper/VolGroup01-LogVol02
>> >lrwxrwxrwx 1 root root 31 Jan 1 17:40 /dev/VolGroup01/LogVol03 ->
>> >/dev/mapper/VolGroup01-LogVol03
>> >lrwxrwxrwx 1 root root 31 Jan 1 17:40 /dev/VolGroup01/LogVol04 ->
>> >/dev/mapper/VolGroup01-LogVol04
>> >root_at_sunny2 /root$
>>
>>
>

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Received on Sat Jan 01 2011 - 22:35:09 CST