After configuring I/O fencing for data integrity, you must configure the VxVM disk groups for a campus cluster before installing your database by configuring VxVM disk groups for remote mirroring.
For the example configuration, the database is Oracle RAC.
To configure VxVM disk groups for Oracle RAC on an SF for Oracle RAC campus cluster
# vxdisksetup -i disk01 format=cdsdisk # vxdisksetup -i disk02 format=cdsdisk # vxdisksetup -i disk03 format=cdsdisk # vxdisksetup -i disk05 format=cdsdisk # vxdisksetup -i disk06 format=cdsdisk # vxdisksetup -i disk07 format=cdsdisk # vxdisksetup -i disk08 format=cdsdisk
# vxdctl set site=sitename
The site name is stored in the /etc/vx/volboot file. To display the site names:
# vxdctl list | grep siteid
For example, for a four node cluster with two nodes at each site, mark the sites as follows:
On the nodes at first site:
# vxdctl set site=site1
On the nodes at second site:
# vxdctl set site=site2
# vxdmpadm listenclosure ENCLR_NAME ENCLR_TYPE ENCLR_SNO STATUS ARRAY_TYPE LUN_COUNT FIRMWARE ============================================================================= ams_wms0 AMS_WMS 75040638 CONNECTED A/A-A 35 - hds9500-alua0 HDS9500-ALUA D600145E CONNECTED A/A-A 9 - hds9500-alua1 HDS9500-ALUA D6001FD3 CONNECTED A/A-A 6 - disk Disk DISKS CONNECTED Disk 2 -
# vxdisk settag site=sitename encl:ENCLR_NAME
# vxdisk settag site=sitename disk
For example:
# vxdisk settag site=site1 disk01 # vxdisk settag site=site1 disk02 # vxdisk settag site=site1 disk03 # vxdisk settag site=site2 disk06 # vxdisk settag site=site2 disk08
# vxdisk listtag
For example:
# vxdisk listtag DEVICE NAME VALUE disk01 site site1 disk02 site site1 disk03 site site1 disk04 site site1 disk05 site site1 disk06 site site2 disk07 site site2 disk08 site site2 disk09 site site2
# vxdg -s init ocrvotedg disk05 disk07
# vxdg -s init oradatadg disk01 disk06
# vxdg -g ocrvotedg addsite site1
# vxdg -g ocrvotedg addsite site2
# vxdg -g oradatadg addsite site1
# vxdg -g oradatadg addsite site2
# vxdg -o retain -g ocrvotedg settag encl:3pardata0 site=site1
# vxdg -o retain -g ocrvotedg settag encl:3pardata1 site=site2
# vxdg -o retain -g oradatadg settag encl:3pardata0 site=site1
# vxdg -o retain -g oradatadg settag encl:3pardata1 site=site2
# vxdg -g ocrvotedg set siteconsistent=on
# vxdg -g oradatadg set siteconsistent=on
# vxassist -g ocrvotedg make ocrvotevol 2048m nmirror=2
# vxassist -g oradatadg make oradatavol 10200m nmirror=2
# vxassist -g ocrvotedg make ocrvotevol 2048m nmirror=2
# vxassist -g oradatadg make oradatavol 10200m nmirror=2
With the Site Awareness license installed on all hosts, the volume created has the following characteristics by default.
The all sites attribute is set to ON; the volumes have at least one mirror at each site.
The volumes are automatically mirrored across sites.
The read policy (rdpol) is set to siteread.
The read policy can be displayed using the vxprint -ht command.
The volumes inherit the site consistency value that is set on the disk group.
# vxvol -g ocrvotedg startall # vxvol -g oradatadg startall
# mkfs -t vxfs /dev/vx/rdsk/ocrvotedg/ocrvotevol
# mkfs -t vxfs /dev/vx/rdsk/oradatadg/oradatavol
# mount -t vxfs -o cluster /dev/vx/dsk/ocrvotedg/ocrvotevol /ocrvote
# mount -t vxfs -o cluster /dev/vx/dsk/oradatadg/oradatavol /oradata
# mkdir -p /ocrvote/ocr
# mkdir -p /ocrvote/vote
# chown -R user:group /ocrvote
Also change the ownership of /oradata to Oracle user:
# chown user:group /oradata
For Oracle RAC: