How to configure ASM disk in AIX?

How to configure ASM disk in AIX?

Below are steps for creating asm disks on OS as well as on Oracle ASM instance on AIX 5.3 and above. Step-4) Change permission of asmdisk for oracle user. Step-5) Now we can see /dev/asmdisk01 as CANDIDATE disk after login in asm instance. Log in to server as oracle user and set oracle asm/grid environment variables.

How do I check my ASM disk group status?

select group_number, name, state, type from v$asm_diskgroup;

  1. To check the asm instance is connected and running:
  2. To check the asm disks and their status:
  3. MISSING – Automatic Storage Management metadata indicates that the disk is known to be part of the Automatic Storage Management disk group, but no disk in the storage.

How do I check disk ASM in Linux?

In Linux, ASMLib provides the wrapper for managing the ASM disks. To identify the underlying physical device that the ASM disk point to, you can use the oracleasm querydisk command. The querydisk option will list the major and minor numbers that can be used to match the physical device.

What is ASM in AIX?

ASM is Oracle’s recommended storage management solution. Oracle ASM uses disk groups to store data files. A disk group consists of multiple disks and for each ASM disk group, a level of redundancy is defined (normal (mirrored), high (3 mirrors), or external (no ASM mirroring)).

How do I create a raw disk in AIX?

AIX: How to Setting up Raw Devices

  1. Create volume group. See the section Creating Volume Groups.
  2. Create logical volume: a. Enter the command smitty. b. Select: Physical & Logical Storage → Logical Volume Manager → Logical Volumes → Add a Logical Volume. c. Enter volume group name. d.
  3. Accessing raw devices.

How do I check my ASM status?

Verify the ASM setup

  1. Change to the Oracle Clusterware/Grid Infrastructure home directory: For Oracle RAC 10g Release 2/Oracle RAC 11g Release 1: # cd $CRS_HOME/bin.
  2. Verify the status of ASM on all the nodes in the cluster: # ./srvctl status asm ASM instance +ASM1 is running on node galaxy.

How do I check ASM disk?

To see all disks, use V$ASM_DISKGROUP instead. Contains one row for every Oracle ASM file in every disk group mounted by the Oracle ASM instance. In an Oracle ASM instance, contains one row for every active Oracle ASM long running operation executing in the Oracle ASM instance.

How do I check my ASM?

What are the init parameters related to ASM?

Recommended Settings for Oracle ASM Initialization Parameters


Can a PVID be written to a disk in Aix?

Because the ASM uses the same area of the disk where AIX stores the PVID, a PVID should never be written to a disk after the disk has been assigned to the ASM, as this would corrupt the ASM disk header.

How is a disk assigned to a VG in Aix?

Traditionally AIX storage devices were made available for use by assigning disk devices to Volume Groups (VGs) and then defining Logical Volumes (LVs) in the VGs. When a disk is assigned to a VG the Logical Volume Manager (LVM) writes information to the disk and to the AIX Object Data Manager (ODM).

What does the LSPV command in Aix do?

AIX lspv Command: The “-u” option of the AIX lspv command provides additional device identification information, the UDID and UUID. The lspv command will also indicate if the device is locked. These IDs are unique to a disk and can be used to identify a shared disk across nodes of the cluster.

Is there a way to generate a PVID?

The most common way to generate a PVID is to simply add it to a volume group. Alternatively, the chdev command with the pv attribute flag set to yes (chdev –l hdisk# -a pv=yes) may be used to assign a PVID to an hdisk without adding it to a VG.