I have a two node Oracle RAC and I need to add disks to it
Storage team presented 3 new LUNs
rac1 & rac2
RAC1RAC2_PROJECT335066_Data1 (Tier1, RAID5, Size: 50GB)
World Wide LUN ID# 6001-4380-05de-d87b-0000-5000-10ef-0000
RAC1RAC2_PROJECT335066_Logs1 (Tier1, RAID1, Size: 20GB)
World Wide LUN ID# 6001-4380-05de-d87b-0000-5000-10f3-0000
RAC1RAC2_PROJECT335066_Quo (Tier1, RAID5, Size: 1GB)
World Wide LUN ID# 6001-4380-05de-d87b-0000-5000-10f7-000010ef
10f3
10f7
My server has a fibre-channel HBA card. Check HBA information. Install libsysfs and sysfsutils if you don’t have systool. Run yum install sysfsutils. I want to use an internal repository so I won’t use yum
root@rac1# systool -av -c fc_host
-bash: systool: command not foundroot@rac1:~ # rpm -ivh http://172.22.19.185/rhel/redhat/rhel-x86_64-server-6/getPackage/libsysfs-2.1.0-7.el6.x86_64.rpm http://172.22.19.185/rhel/redhat/rhel-x86_64-server-6/getPackage/sysfsutils-2.1.0-7.el6.x86_64.rpm
Retrieving http://172.22.19.185/rhel/redhat/rhel-x86_64-server-6/getPackage/libsysfs-2.1.0-7.el6.x86_64.rpm
Retrieving http://172.22.19.185/rhel/redhat/rhel-x86_64-server-6/getPackage/sysfsutils-2.1.0-7.el6.x86_64.rpm
Preparing… ########################################### [100%]
1:libsysfs ########################################### [ 50%]
2:sysfsutils ########################################### [100%]
root@rac1:~ # systool -av -c fc_host | grep “Class Device =” | awk -F’=’ {‘print $2’} | awk -F'”‘ {‘print “echo \”- – -\” > /sys/class/scsi_host/”$2″/scan”‘}
echo “- – -” > /sys/class/scsi_host/host0/scan
echo “- – -” > /sys/class/scsi_host/host1/scanroot@rac1:~ # systool -av -c fc_host | grep “Class Device =” | awk -F’=’ {‘print $2’} | awk -F'”‘ {‘print “echo \”- – -\” > /sys/class/scsi_host/”$2″/scan”‘} | bash
Listing the disks under Oracle ASM
root@rac1:~ # /etc/init.d/oracleasm listdisks
OCR_VOTE_001
OCR_VOTE_002
OCR_VOTE_003
OCR_VOTE_004
OCR_VOTE_005
ORAARCH_001
ORADATA_001
Added the disk information to /etc/multipath.conf
multipath {
wwid 36001438005ded87b0000500010ef0000
alias asmdisk07
}
multipath {
wwid 36001438005ded87b0000500010f30000
alias asmdisk08
}
multipath {
wwid 36001438005ded87b0000500010f70000
alias votdisk04
}
Then run multipath -r to reload the new multipath aliases
Check if the aliases changed
root@rac1:~ # multipath -ll | grep 10ef
asmdisk07 (36001438005ded87b0000500010ef0000) dm-44 HP,HSV450
root@rac1:~ # multipath -ll | grep 10f3
asmdisk08 (36001438005ded87b0000500010f30000) dm-45 HP,HSV450
root@rac1:~ # multipath -ll | grep 10f7
votdisk04 (36001438005ded87b0000500010f70000) dm-46 HP,HSV450
DBA team asked to change owner and group for the disk devices
root@rac1:~ # chown oracle:dba /dev/mapper/asmdisk07
root@rac1:~ # chown oracle:dba /dev/mapper/asmdisk08
root@rac1:~ # chown oracle:dba /dev/mapper/votdisk04
Labeling disks
root@rac1:~ # /etc/init.d/oracleasm createdisk OCR_VOTE_006 votdisk04
Marking disk “OCR_VOTE_006” as an ASM disk: [ OK ]
root@rac1:~ # /etc/init.d/oracleasm createdisk ORADATA_002 asmdisk07
Marking disk “ORADATA_002” as an ASM disk: [ OK ]
root@rac1:~ # /etc/init.d/oracleasm createdisk ORADATA_003 asmdisk08
Marking disk “ORADATA_003” as an ASM disk: [ OK ]
Checking if the new disks
root@rac1:~ # /etc/init.d/oracleasm listdisks
OCR_VOTE_001
OCR_VOTE_002
OCR_VOTE_003
OCR_VOTE_004
OCR_VOTE_005
ORAARCH_001
ORADATA_001
ORADATA_002
ORADATA_003
In the other node, the disks are not updated automatically
root@rac2:~ # /etc/init.d/oracleasm listdisks
OCR_VOTE_001
OCR_VOTE_002
OCR_VOTE_003
OCR_VOTE_004
OCR_VOTE_005
ORAARCH_001
ORADATA_001
You need to perform the same steps and instead of running oracleasm disk, run oracleasm scandisks
root@rac2:~ # /etc/init.d/oracleasm scandisks
Scanning the system for Oracle ASMLib disks: [ OK ]root@rac2:~ # /etc/init.d/oracleasm listdisks
OCR_VOTE_001
OCR_VOTE_002
OCR_VOTE_003
OCR_VOTE_004
OCR_VOTE_005
ORAARCH_001
ORADATA_001
ORADATA_002
ORADATA_003
setaOffice 