RE: CVU reporting error when checking for ASM storage
- From: "Hameed, Amir" <Amir.Hameed@xxxxxxxxx>
- To: "dmarc-noreply@xxxxxxxxxxxxx" <dmarc-noreply@xxxxxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 16 Jan 2015 20:13:52 +0000
Thanks Mladen.
I am following Red Hat's note https://access.redhat.com/solutions/272153 titled
"How to create Oracle ASM disks using DM Multipath devices in Red Hat
Enterprise Linux?" to define UDEV rules on block devices. What Tim has
documented uses SCSI device names in the rule instead of Device Mapper. This is
the first time I am doing ASM. I am going to carry on with the installation to
see how it goes and it might be an issue with CVU. This is what is listed in
Red Hat's document.
1. udevadm info --query=all --name=/dev/mapper/mpathN |grep -i DM_UUID
1. ACTION=="add|change", ENV{DM_UUID}=="mpath-<UUID>",
SYMLINK+="oracleasm/asm01", GROUP="dba", OWNER="oracle", MODE="0660"
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Mladen Gogala
Sent: Friday, January 16, 2015 2:47 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: CVU reporting error when checking for ASM storage
Amir, you cannot just add Linux block devices to ASM. You need to "scsify"
them. The best brief description is on Tim Hall's ORACLE-BASE site:
http://oracle-base.com/articles/linux/udev-scsi-rules-configuration-in-oracle-linux-5-and-6.php
On 01/16/2015 02:00 PM, Hameed, Amir wrote:
Hi,
I am installing Oracle Grid 12.1.0.2 on RHEL 6.5. When the Prerequisite Checks
phase of OUI, it reported PRVF -5150 on ASM disks. When run CVU on the ASM
disks, it reports an error as shown below. Below is an out from CVU with
debugging enabled when it was run for one RAC node only:
CV_TRACELOC=/tmp/cvutrace
./runcluvfy.sh comp ssa -n <node-name> -s /dev/oracleasm/grid/asmgrid02
==============================================
Verifying shared storage accessibility
Checking shared storage accessibility...
ERROR: /dev/oracleasm/grid/asmgrid02
Storage operation failed
Shared storage check failed on nodes "usa0300lx566"
Verification of shared storage accessibility was unsuccessful on all the
specified nodes.
==============================================
The CVU trace file shows the following error:
OUTPUT><CV_ERR><SLOS_LOC>CVU00101</SLOS_LOC><SLOS_OP></SLOS_OP><SLOS_CAT>OTHEROS</SLOS_CAT><SLOS_OTHERINFO>Cannot
locate disk for
'/dev/dm-50'</SLOS_OTHERINFO></CV_ERR><CV_VRES>0</CV_VRES><CV_LOG>Exectask:getstorage
success.</CV_LOG><CV_CMDLOG><CV_INITCMD>/tmp/CVU_12.1.0.2.0_oracle/exectask
-getstorage /dev/oracleasm/grid/asmgrid02 </CV_INITCMD><CV_CMD>realpath
/dev/oracleasm/grid/asmgrid02</CV_CMD><CV_CMDOUT>
/dev/dm-50</CV_CMDOUT><CV_CMDSTAT>0</CV_CMDSTAT><CV_CMD>stat
/dev/dm-50</CV_CMD><CV_CMDOUT>
stat.st_mode:61B0</CV_CMDOUT><CV_CMDSTAT>0</CV_CMDSTAT><CV_CMD>fopen
/proc/partitions</CV_CMD><CV_CMDOUT> 8 0 291991552 sda
I am using udev rules and the rule defined is shown below:
ACTION=="add|change", ENV{DM_UUID}=="mpath-360000970000192606068533031464134",
SYMLINK+="oracleasm/grid/asmgrid02", GROUP="asmadmin", OWNER="oracle",
MODE="0660"
The Device alias exists as shown below:
$ ls -ltr /dev/oracleasm/grid/asmgrid02
The multipath device has proper permissions set:
cd /dev/oracleasm/grid
$ ls -ltr
total 0
lrwxrwxrwx 1 root root 11 Jan 16 13:37 asmgrid02 -> ../../dm-50
$ ls -ltr ../../dm-50
brw-rw---- 1 oracle asmadmin 253, 50 Jan 16 13:37 ../../dm-50
Any idea what might be wrong here?
Thanks,
Amir
--
Mladen Gogala
Oracle DBA
http://mgogala.freehostia.com
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