Block device problem ( Oracle RAC on v3 with SGeRAC )

[vinod u]

Hi I am installing Oracle 10g RAC on 11.31. Both the nodes are installed wih SGeRAC. I followed all steps from Installaion cookbook.
Acc to steps I created /dev/vg_rac/ocr with lvcreate command. Now while installing Clusterware software it failed with
"The location /dev/vg_rac/osr, entered for the Oracle Cluster Registry (OCR) is not
shared across all the nodes in the cluster. Specify a shared raw partition or
cluster file system file that is visible by the same name on all nodes of the
cluster:.
From metalink I found the cause was
The location is a block device :-

ls -al /dev/sde1
brw-rw---- 1 root disk 8, 65 Feb 11 2010 /dev/vg_rac/osr NOTE b for block rather than c for character

The OUI does not recognize and use block devices

and the solution is "Bind raw devices and use these raw devices within OUI". I think this is for Linux.
I have SGeRAC v19 installed.
11.31 is the OS.
Machine is Cx2020
Oracle 10.2.0.1
5 Physical Disk ( One Disk as vglock and other 4 as vg_rac )
3 SLVMs under vg_rac ocr,vd and db
Please help to fix this error.
Thanks
Vinod

[Duncan Edmonstone]

so did you try using the RAW lvol? which would be /dev/vg_rac/rocr

(I presume your post contains typos as well as you seem to be mixing ocr and osr freely)

HTH

Duncan

[vinod u]

hi thanks for the reply , Apologize for the typo

No, There are no listings as /dev/vg_rac/rocr.
I created ocr as

ksc# lvcreate â i 10 â I 1024 â L 100 â n ocr /dev/vg_rac

And as mentioned in cookbook created links as

ksc/schalke# cd /oracle/RAC/ (directory where you want to have the links)
ksc/schalke# ln -s /dev/vg_rac/ocr ocr
ksc/schalke# ln -s /dev/vg_rac/vd vd

Vinod

[Turgay Cavdar]

Hi,
Are you sure your VG is shared LVM? Have you set the permissions?
Can you send vgdisplay -v?

[Duncan Edmonstone]

Vinod,

You should have raw devices as well as block devices when you created the LVs... are you following the instructions in the manual:

http://docs.hp.com/en/T1859-90060/ch02s13.html

>> I followed all steps from Installaion cookbook

Which installation cookbook are you referring to?

HTH

Duncan