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Vmware creates a shared disk for oracle rac to use (rhel system)

2025-01-17 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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1 create a shared disk using vmware:

C:\ Users\ Administrator > E:\ vmware\ vmware-vdiskmanager.exe-c-s 500m-a lsilogic-T2 "G:\ rac_sharedisk\ testdisk01.vmdk"

Creating disk'G:\ rac_sharedisk\ testdisk01.vmdk'

Create: 100% done.

Virtual disk creation successful.

2 use vmware to add disks to the virtual machine.

Enter the virtual machine home directory, modify the corresponding vmx file, and add the following line, of which 6 can be made according to the situation.

Scsi1:6.present = "TRUE"

Scsi1:6.mode = "independent-persistent"

Scsi1:6.filename = "G:\ rac_sharedisk\ testdisk01.vmdk"

Scsi1:6.deviceType = "disk"

Ps: a set of rac with the same operation for both nodes

3 the operating system scans the disk. If fdisk cannot see the corresponding disk, use the following command to rescan the disk (no effect on the running rac)

[root@rac1 raw] # echo "- -" > / sys/class/scsi_host/host0/scan

[root@rac1 raw] # echo "- -" > / sys/class/scsi_host/host1/scan

...

[root@rac1 raw] # fdisk-l

Disk / dev/sdg: 524 MB, 524288000 bytes

64 heads, 32 sectors/track, 500 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

4 modify udev configuration file

[root@rac2 raw] # grep-v ^ # / etc/udev/rules.d/60-raw.rules

ACTION== "add", KERNEL== "sdb1", RUN+= "/ bin/raw / dev/raw/raw1 N"

ACTION== "add", KERNEL== "sdc1", RUN+= "/ bin/raw / dev/raw/raw2 N"

ACTION== "add", KERNEL== "sdd1", RUN+= "/ bin/raw / dev/raw/raw3 N"

ACTION== "add", KERNEL== "sde1", RUN+= "/ bin/raw / dev/raw/raw4 N"

ACTION== "add", KERNEL== "sdf1", RUN+= "/ bin/raw / dev/raw/raw5 N"

ACTION== "add", KERNEL== "sdg", RUN+= "/ bin/raw / dev/raw/raw6 N"

KERNEL== "raw1", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

KERNEL== "raw2", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

KERNEL== "raw3", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

KERNEL== "raw4", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

KERNEL== "raw5", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

KERNEL== "raw6", OWNER= "grid", GROUP= "asmadmin", MODE= "660"

5 restart udev (no effect on running rac)

/ sbin/start_udev

6 confirm that the disk already exists

[root@rac1 raw] # pwd

/ dev/raw

[root@rac1 raw] # ll

Total 0

Crw-rw---- 1 grid asmadmin 162, 1 Jun 14 05:01 raw1

Crw-rw---- 1 grid asmadmin 162, 2 Jun 14 05:00 raw2

Crw-rw---- 1 grid asmadmin 162, 3 Jun 14 05:00 raw3

Crw-rw---- 1 grid asmadmin 162, 4 Jun 14 04:40 raw4

Crw-rw---- 1 grid asmadmin 162, 5 Jun 14 04:40 raw5

Crw-rw---- 1 grid asmadmin 162, 6 Jun 14 05:00 raw6

Crw-rw---- 1 root disk 162, 0 Jun 14 04:40 rawctl

6 enter the asm instance and add the disk.

SQL > select PATH,name,GROUP_NUMBER,STATE,MOUNT_STATUS,HEADER_STATUS from v$asm_disk

PATH NAME GROUP_NUMBER STATE MOUNT_STATUS HEADER_STATUS

-

/ dev/raw/raw6 0 NORMAL CLOSED CANDIDATE

/ dev/raw/raw3 DATA_0002 2 NORMAL CACHED MEMBER

/ dev/raw/raw4 DATA1_0000 1 NORMAL CACHED MEMBER

/ dev/raw/raw5 DATA1_0001 1 NORMAL CACHED MEMBER

/ dev/raw/raw2 DATA_0001 2 NORMAL CACHED MEMBER

/ dev/raw/raw1 DATA_0000 2 NORMAL CACHED MEMBER

SQL > alter diskgroup DATA add disk'/ dev/raw/raw6'

Diskgroup altered.

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