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Configure ASMLib for Oracle ASM

Configure ASMLib for Oracle ASM

oracle clusteringintermediate
by OracleDba
23 views
1

Overview

Configure ASMLib for Oracle ASM Environment

Code/Command (click line numbers to comment):

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OS
Red Hat Enterprise Linux release 8.7
Kernel Version
4.18.0-477.27.1.el8_8.x86_64
ASM disk owner
grid user
2

Section 2

OS Kernel Version ASM disk owner Pre-requisites a. Create OS user and groups for Oracle ASM disk owner
3

Section 3

a. Create OS user and groups for Oracle ASM disk owner http://www.br8dba.com/create-users-groups-and-paths-for-oracle-rac/ b. Add RAW disks to server (Please verify with your system administrator for ASM disk names)

Code/Command (click line numbers to comment):

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http://www.br8dba.com/create-users-groups-and-paths-for-oracle-rac/

Operating System
Red Hat Enterprise Linux release 8.7
Storage
/dev/sda
For Operating system and other
/dev/sdb
100G for ASM DISK
/dev/sdc
100G for ASM DISK
/dev/sdd
100G for ASM DISK
/dev/sde
100G for ASM DISK
/dev/sdf
100G for ASM DISK
4

Section 4

Storage Configure ASMLib for Oracle ASM (Only on Linux) What is ASMLib? ASMLib is not mandatory for the Automatic Storage Management (ASM) feature of Oracle Database on Linux and all features and functionality of ASM will work without ASMLib.

Code/Command (click line numbers to comment):

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What is ASMLib?
ASMLib, short for "Automatic Storage Management Library," is a support library provided by Oracle for managing Oracle ASM (Automatic Storage Management) on Linux systems. It simplifies the administration and management of Oracle ASM disk groups and volumes by providing a set of utilities and kernel modules. 
ASMLib is typically used in Oracle Database environments to interact with ASM disks and is specifically designed to work with Oracle ASM.
ASMlib driver is required on Linux operating systems, to enable a disk readable by ASM. Without ASMLIB, disks can’t be used at asm disks.
All ASMLib installations require the kmod-redhat-oracleasm, oracleasmlib and oracleasm-support packages appropriate for their machine.
ASMLib is not mandatory for the Automatic Storage Management (ASM) feature of Oracle Database on Linux and all features and functionality of ASM will work without ASMLib.
oracleasm-support
kmod-redhat-oracleasm  <-- download from Redhat
oracleasmlib
You can also use udev rules instead of Oracle ASMLib.
https://www.br8dba.com/configure-udev-rules-for-oracle-asm/
5

Section 5

oracleasm-support kmod-redhat-oracleasm <-- download from Redhat oracleasmlib You can also use udev rules instead of Oracle ASMLib. https://www.br8dba.com/configure-udev-rules-for-oracle-asm/ 1. List the disks sdb 8:16 0 100G 0 disk sdc 8:32 0 100G 0 disk sdd 8:48 0 100G 0 disk sde 8:64 0 100G 0 disk sdf 8:80 0 100G 0 disk

Code/Command (click line numbers to comment):

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[root@db1 ~]# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda           8:0    0  100G  0 disk
├─sda1        8:1    0    1G  0 part /boot
└─sda2        8:2    0   99G  0 part
  ├─ol-root 252:0    0 61.2G  0 lvm  /
  ├─ol-swap 252:1    0  7.9G  0 lvm  [SWAP]
  └─ol-home 252:2    0 29.9G  0 lvm  /home
sdb           8:16   0  100G  0 disk
sdc           8:32   0  100G  0 disk
sdd           8:48   0  100G  0 disk
sde           8:64   0  100G  0 disk
sdf           8:80   0  100G  0 disk
sr0          11:0    1 1024M  0 rom
[root@db1 ~]#
6

Section 6

fdisk /dev/sdb fdisk /dev/sdc fdisk /dev/sdd fdisk /dev/sde fdisk /dev/sdf

Code/Command (click line numbers to comment):

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[root@db1 ~]#
fdisk /dev/sdb
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xf1d4ac05.

Command (m for help):
n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p):
Using default response p.
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199):
Created a new partition 1 of type 'Linux' and of size 100 GiB.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

[root@db1 ~]#
fdisk /dev/sdc
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xfd2d6460.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p):

Using default response p.
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199):

Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

[root@db1 ~]#
fdisk /dev/sdd
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xa03481f1.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p):

Using default response p.
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199):

Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

[root@db1 ~]#
fdisk /dev/sde
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xbc1867fb.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p):

Using default response p.
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199):

Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

[root@db1 ~]#
fdisk /dev/sdf
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0x4807d719.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p):

Using default response p.
Partition number (1-4, default 1):
First sector (2048-209715199, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199):

Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

[root@db1 ~]#
[root@db1 ~]# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda           8:0    0  100G  0 disk
├─sda1        8:1    0    1G  0 part /boot
└─sda2        8:2    0   99G  0 part
  ├─ol-root 252:0    0 61.2G  0 lvm  /
  ├─ol-swap 252:1    0  7.9G  0 lvm  [SWAP]
  └─ol-home 252:2    0 29.9G  0 lvm  /home
sdb           8:16   0  100G  0 disk
└─sdb1        8:17   0  100G  0 part
sdc           8:32   0  100G  0 disk
└─sdc1        8:33   0  100G  0 part
sdd           8:48   0  100G  0 disk
└─sdd1        8:49   0  100G  0 part
sde           8:64   0  100G  0 disk
└─sde1        8:65   0  100G  0 part
sdf           8:80   0  100G  0 disk
└─sdf1        8:81   0  100G  0 part
sr0          11:0    1 1024M  0 rom
[root@db1 ~]#
7

Section 7

sdb 8:16 0 100G 0 disk └─sdb1 8:17 0 100G 0 part sdc 8:32 0 100G 0 disk └─sdc1 8:33 0 100G 0 part sdd 8:48 0 100G 0 disk └─sdd1 8:49 0 100G 0 part sde 8:64 0 100G 0 disk └─sde1 8:65 0 100G 0 part sdf 8:80 0 100G 0 disk └─sdf1 8:81 0 100G 0 part 3. Load updated block device partition tables 4. Install ASMLib packages

Code/Command (click line numbers to comment):

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# For Linux 5,6 and 7

# /sbin/partprobe /dev/sdb1
# /sbin/partprobe /dev/sdc1
# /sbin/partprobe /dev/sdd1
# /sbin/partprobe /dev/sde1
# /sbin/partprobe /dev/sdf1

# For Linux8
[root@db1 ~]# /sbin/partx -u /dev/sdb1
[root@db1 ~]# /sbin/partx -u /dev/sdc1
[root@db1 ~]# /sbin/partx -u /dev/sdd1
[root@db1 ~]# /sbin/partx -u /dev/sde1
[root@db1 ~]# /sbin/partx -u /dev/sdf1
8

Section 8

*** Download and install ASMLib packages that support your kernel. uname -rms 4.18.0-477.27.1.el8_8.x86_64 yum install -y oracleasm kmod-redhat-oracleasm x86_64 8:2.0.8-17.0.2.el8

Code/Command (click line numbers to comment):

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*** Download and install ASMLib packages that support your kernel.
[root@db1 ~]#
uname -rms
Linux
4.18.0-477.27.1.el8_8.x86_64
x86_64
[root@db1 ~]#
[root@db1 ~]#
yum clean all ; yum repolist
24 files removed
repo id                                                                                   repo name
ol8_UEKR7                                                                                 Latest Unbreakable Enterprise Kernel Release 7 for Oracle Linux 8 (x86_64)
ol8_appstream                                                                             Oracle Linux 8 Application Stream (x86_64)
ol8_baseos_latest                                                                         Oracle Linux 8 BaseOS Latest (x86_64)
[root@db1 ~]#

[root@db1 ~]#
yum install -y oracleasm
Oracle Linux 8 BaseOS Latest (x86_64)                                                                                                                                                                         31 MB/s |  64 MB     00:02
Oracle Linux 8 Application Stream (x86_64)                                                                                                                                                                    23 MB/s |  49 MB     00:02
Latest Unbreakable Enterprise Kernel Release 7 for Oracle Linux 8 (x86_64)                                                                                                                                    23 MB/s |  23 MB     00:01
Last metadata expiration check: 0:00:09 ago on Fri 13 Oct 2023 10:10:41 PM EDT.
Package kernel-uek-core-5.15.0-3.60.5.1.el8uek.x86_64 is already installed.
Dependencies resolved.
=============================================================================================================================================================================================================================================
 Package                                                       Architecture                                   Version                                                        Repository                                                 Size
=============================================================================================================================================================================================================================================
Installing:
kmod-redhat-oracleasm                                         x86_64                                         8:2.0.8-17.0.2.el8
ol8_baseos_latest                                          45 k
Installing dependencies:
 kernel-core                                                   x86_64                                         4.18.0-477.27.1.el8_8                                          ol8_baseos_latest                                          42 M

Transaction Summary
=============================================================================================================================================================================================================================================
Install  2 Packages

Total download size: 42 M
Installed size: 70 M
Downloading Packages:
(1/2): kernel-core-4.18.0-477.27.1.el8_8.x86_64.rpm                                   34 MB/s |  42 MB     00:01
(2/2):
kmod-redhat-oracleasm-2.0.8-17.0.2.el8.x86_64.rpm
29 kB/s |  45 kB     00:01
---------------------------------------------------------------------------------------------------------------------
Total                                                                                 26 MB/s |  42 MB     00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                             1/1
  Installing       : kernel-core-4.18.0-477.27.1.el8_8.x86_64                                                    1/2
  Running scriptlet: kernel-core-4.18.0-477.27.1.el8_8.x86_64                                                    1/2
  Installing       : kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64                                             2/2
  Running scriptlet: kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64                                             2/2
  Running scriptlet: kernel-core-4.18.0-477.27.1.el8_8.x86_64                                                    2/2
  Running scriptlet: kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64                                             2/2
  Verifying        : kernel-core-4.18.0-477.27.1.el8_8.x86_64                                                    1/2
  Verifying        : kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64                                             2/2

Installed:
  kernel-core-4.18.0-477.27.1.el8_8.x86_64
kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64
Complete!
[root@db1 ~]#


[root@db1 ~]#
rpm -qa | grep -i oracleasm
kmod-redhat-oracleasm-2.0.8-17.0.2.el8.x86_64
[root@db1 ~]#


[root@db1 ~]#
yum install -y oracleasm-support
Last metadata expiration check: 0:10:32 ago on Fri 13 Oct 2023 10:10:41 PM EDT.
No match for argument: oracleasm-support
Error: Unable to find a match: oracleasm-support
[root@db1 ~]#

[root@db1 ~]#
yum install oracleasmlib
Last metadata expiration check: 0:10:59 ago on Fri 13 Oct 2023 10:10:41 PM EDT.
No match for argument: oracleasmlib
Error: Unable to find a match: oracleasmlib
[root@db1 ~]#

[root@db1 ~]#
wget https://download.oracle.com/otn_software/asmlib/oracleasmlib-2.0.17-1.el8.x86_64.rpm
--2023-10-13 22:02:58--  https://download.oracle.com/otn_software/asmlib/oracleasmlib-2.0.17-1.el8.x86_64.rpm
Resolving download.oracle.com (download.oracle.com)... 119.56.0.22
Connecting to download.oracle.com (download.oracle.com)|119.56.0.22|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 27092 (26K) [application/x-redhat-package-manager]
Saving to: ‘oracleasmlib-2.0.17-1.el8.x86_64.rpm’

oracleasmlib-2.0.17-1.el8.x86_64.rpm                        100%[========================================================================================================================================>]  26.46K  --.-KB/s    in 0.002s

2023-10-13 22:02:59 (13.1 MB/s) - ‘oracleasmlib-2.0.17-1.el8.x86_64.rpm’ saved [27092/27092]

[root@db1 ~]#
wget https://public-yum.oracle.com/repo/OracleLinux/OL8/addons/x86_64/getPackage/oracleasm-support-2.1.12-1.el8.x86_64.rpm
--2023-10-13 22:04:10--  https://public-yum.oracle.com/repo/OracleLinux/OL8/addons/x86_64/getPackage/oracleasm-support-2.1.12-1.el8.x86_64.rpm
Resolving public-yum.oracle.com (public-yum.oracle.com)... 119.56.0.210, 2401:7400:8888:18d::2a7d, 2401:7400:8888:184::2a7d
Connecting to public-yum.oracle.com (public-yum.oracle.com)|119.56.0.210|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 99852 (98K) [application/x-rpm]
Saving to: ‘oracleasm-support-2.1.12-1.el8.x86_64.rpm’

oracleasm-support-2.1.12-1.el8.x86_64.rpm                   100%[========================================================================================================================================>]  97.51K  --.-KB/s    in 0.007s

2023-10-13 22:04:11 (13.7 MB/s) - ‘oracleasm-support-2.1.12-1.el8.x86_64.rpm’ saved [99852/99852]

[root@db1 ~]#
[root@db1 ~]# ls -
ltr *.rpm
-rw-r--r--. 1 root root 99852 Feb 28  2020
oracleasm-support-2.1.12-1.el8.x86_64.rpm
-rw-r--r--. 1 root root 27092 Jun  1  2020
oracleasmlib-2.0.17-1.el8.x86_64.rpm
[root@db1 ~]#
[root@db1 ~]#

[root@db1 ~]#
yum localinstall ./oracleasm-support-2.1.12-1.el8.x86_64.rpm ./oracleasmlib-2.0.17-1.el8.x86_64.rpm
Last metadata expiration check: 0:13:19 ago on Fri 13 Oct 2023 10:10:41 PM EDT.
Dependencies resolved.
=============================================================================================================================================================================================================================================
 Package                                                       Architecture                                       Version                                                     Repository                                                Size
=============================================================================================================================================================================================================================================
Installing:
 oracleasm-support                                             x86_64                                             2.1.12-1.el8                                                @commandline                                              98 k
 oracleasmlib                                                  x86_64                                             2.0.17-1.el8                                                @commandline                                              26 k

Transaction Summary
=============================================================================================================================================================================================================================================
Install  2 Packages

Total size: 124 k
Installed size: 400 k
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                                                                                                                                     1/1
  Installing       : oracleasmlib-2.0.17-1.el8.x86_64                                                                                                                                                                                    1/2
  Installing       : oracleasm-support-2.1.12-1.el8.x86_64                                                                                                                                                                               2/2
  Running scriptlet: oracleasm-support-2.1.12-1.el8.x86_64                                                                                                                                                                               2/2
Note: Forwarding request to 'systemctl enable oracleasm.service'.
Synchronizing state of oracleasm.service with SysV service script with /usr/lib/systemd/systemd-sysv-install.
Executing: /usr/lib/systemd/systemd-sysv-install enable oracleasm
Created symlink /etc/systemd/system/multi-user.target.wants/oracleasm.service → /usr/lib/systemd/system/oracleasm.service.

  Verifying        : oracleasm-support-2.1.12-1.el8.x86_64                                                                                                                                                                               1/2
  Verifying        : oracleasmlib-2.0.17-1.el8.x86_64                                                                                                                                                                                    2/2

Installed:
oracleasm-support-2.1.12-1.el8.x86_64
oracleasmlib-2.0.17-1.el8.x86_64
Complete!
[root@db1 ~]#

[root@db1 ~]#
rpm -qa | grep -i oracleasm
oracleasmlib-2.0.17-1.el8.x86_64
kmod-redhat-oracleasm-2.0.8-17.0.2.el8.x86_64
oracleasm-support-2.1.12-1.el8.x86_64
[root@db1 ~]#
9

Section 9

kmod-redhat-oracleasm-2.0.8-17.0.2.el8.x86_64.rpm kmod-redhat-oracleasm-8:2.0.8-17.0.2.el8.x86_64 rpm -qa | grep -i oracleasm wget https://public-yum.oracle.com/repo/OracleLinux/OL8/addons/x86_64/getPackage/oracleasm-support-2.1.12-1.el8.x86_64.rpm oracleasm-support-2.1.12-1.el8.x86_64.rpm oracleasmlib-2.0.17-1.el8.x86_64.rpm
10

Section 10

yum localinstall ./oracleasm-support-2.1.12-1.el8.x86_64.rpm ./oracleasmlib-2.0.17-1.el8.x86_64.rpm oracleasm-support-2.1.12-1.el8.x86_64 oracleasmlib-2.0.17-1.el8.x86_64 rpm -qa | grep -i oracleasm oracleasmlib-2.0.17-1.el8.x86_64 kmod-redhat-oracleasm-2.0.8-17.0.2.el8.x86_64 oracleasm-support-2.1.12-1.el8.x86_64 5. Configure Oracle ASMLib

Code/Command (click line numbers to comment):

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[root@db1 ~]#
/usr/sbin/oracleasm configure -i
Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library
driver.  The following questions will determine whether the driver is
loaded on boot and what permissions it will have.  The current values
will be shown in brackets ('[]').  Hitting  without typing an
answer will keep that current value.  Ctrl-C will abort.

Default user to own the driver interface []:
grid
Default group to own the driver interface []:
asmadmin
Start Oracle ASM library driver on boot (y/n) [n]:
y
Scan for Oracle ASM disks on boot (y/n) [y]:
y
Writing Oracle ASM library driver configuration: done
[root@db1 ~]#

[root@db1 ~]#
/usr/sbin/oracleasm init
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": failed
Unable to load module "oracleasm"
Mounting ASMlib driver filesystem: failed
Unable to mount ASMlib driver filesystem
[root@db1 ~]#
***
Please consult with the OS Administrator. The ASM library does not load with the current kernel version. I simply want to modify the default kernel boot order. Before making kernel changes, please consult with Oracle and Redhat support.
[root@db1 ~]#
ls -l /boot/vmlinuz-*
-rwxr-xr-x. 1 root root 13287760 Feb 24  2023 /boot/vmlinuz-0-rescue-93eed19701864c2cac4193714f746de8
-rwxr-xr-x. 1 root root 10744352 Nov  8  2022 /boot/vmlinuz-4.18.0-425.3.1.el8.x86_64
-rwxr-xr-x. 1 root root 10851840 Sep 27 14:23 /boot/vmlinuz-4.18.0-477.27.1.el8_8.x86_64
-rwxr-xr-x. 1 root root 13287760 Oct 19  2022 /boot/vmlinuz-5.15.0-3.60.5.1.el8uek.x86_64
[root@db1 ~]#
[root@db1 ~]#
grubby --set-default /boot/vmlinuz-4.18.0-477.27.1.el8_8.x86_64
The default is /boot/loader/entries/93eed19701864c2cac4193714f746de8-4.18.0-477.27.1.el8_8.x86_64.conf with index 1 and kernel /boot/vmlinuz-4.18.0-477.27.1.el8_8.x86_64
[root@db1 ~]# 

[root@db1 ~]#
shutdown -Fr now
[root@db1 ~]#
/usr/sbin/oracleasm init
[root@db1 ~]#
/usr/sbin/oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes
[root@db1 ~]#
11

Section 11

/usr/sbin/oracleasm configure -i grid asmadmin /usr/sbin/oracleasm init Please consult with the OS Administrator. The ASM library does not load with the current kernel version. I simply want to modify the default kernel boot order. Before making kernel changes, please consult with Oracle and Redhat support. grubby --set-default /boot/vmlinuz-4.18.0-477.27.1.el8_8.x86_64
12

Section 12

shutdown -Fr now /usr/sbin/oracleasm init /usr/sbin/oracleasm status 6. Create ASM disks

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[root@db1 ~]#
/usr/sbin/oracleasm createdisk DISK1 /dev/sdb1
Writing disk header: done
Instantiating disk: done
[root@db1 ~]#
/usr/sbin/oracleasm createdisk DISK2 /dev/sdc1
Writing disk header: done
Instantiating disk: done
[root@db1 ~]#
/usr/sbin/oracleasm createdisk DISK3 /dev/sdd1
Writing disk header: done
Instantiating disk: done
[root@db1 ~]#
/usr/sbin/oracleasm createdisk DISK4 /dev/sde1
Writing disk header: done
Instantiating disk: done
[root@db1 ~]#
/usr/sbin/oracleasm createdisk DISK5 /dev/sdf1
Writing disk header: done
Instantiating disk: done
[root@db1 ~]#

[root@db1 ~]#
/usr/sbin/oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
[root@db1 ~]#
[root@db1 ~]#
/usr/sbin/oracleasm listdisks
DISK1
DISK2
DISK3
DISK4
DISK5
[root@db1 ~]#
13

Section 13

/usr/sbin/oracleasm createdisk DISK1 /dev/sdb1 /usr/sbin/oracleasm createdisk DISK2 /dev/sdc1 /usr/sbin/oracleasm createdisk DISK3 /dev/sdd1 /usr/sbin/oracleasm createdisk DISK4 /dev/sde1 /usr/sbin/oracleasm createdisk DISK5 /dev/sdf1 /usr/sbin/oracleasm scandisks
14

Section 14

/usr/sbin/oracleasm listdisks 7. List oracleasm disks ls -ld /dev/sd*1 ls -ltra /dev/oracleasm/disks/*

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[root@db1 ~]#
ls -ld /dev/sd*1
brw-rw----. 1 root disk 8,  1 Oct 14 06:32 /dev/sda1
brw-rw----. 1 root disk 8, 17 Oct 14 07:13 /dev/sdb1
brw-rw----. 1 root disk 8, 33 Oct 14 07:13 /dev/sdc1
brw-rw----. 1 root disk 8, 49 Oct 14 07:13 /dev/sdd1
brw-rw----. 1 root disk 8, 65 Oct 14 07:13 /dev/sde1
brw-rw----. 1 root disk 8, 81 Oct 14 07:13 /dev/sdf1
[root@db1 ~]#

[root@db1 ~]#
ls -ltra /dev/oracleasm/disks/*
brw-rw----. 1
grid asmadmin
8, 17 Oct 14 07:11
/dev/oracleasm/disks/DISK1
brw-rw----. 1
grid asmadmin
8, 33 Oct 14 07:12
/dev/oracleasm/disks/DISK2
brw-rw----. 1
grid asmadmin
8, 49 Oct 14 07:12
/dev/oracleasm/disks/DISK3
brw-rw----. 1
grid asmadmin
8, 65 Oct 14 07:12
/dev/oracleasm/disks/DISK4
brw-rw----. 1
grid asmadmin
8, 81 Oct 14 07:12
/dev/oracleasm/disks/DISK5
[root@db1 ~]#

[root@db1 ~]#
systemctl status oracleasm
● oracleasm.service - Load oracleasm Modules
   Loaded: loaded (/usr/lib/systemd/system/oracleasm.service; enabled; vendor preset: disabled)
Active: active
(exited) since Sat 2023-10-14 06:32:29 EDT; 2h 55min ago
  Process: 852 ExecStart=/usr/sbin/oracleasm.init start_sysctl (code=exited, status=0/SUCCESS)
 Main PID: 852 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 17392)
   Memory: 0B
   CGroup: /system.slice/oracleasm.service

Oct 14 06:32:27 db1.rajasekhar.com systemd[1]: Starting Load oracleasm Modules...
Oct 14 06:32:28 db1.rajasekhar.com oracleasm.init[852]: Initializing the Oracle ASMLib driver: OK
Oct 14 06:32:29 db1.rajasekhar.com oracleasm.init[852]: Scanning the system for Oracle ASMLib disks: OK
Oct 14 06:32:29 db1.rajasekhar.com systemd[1]: Started Load oracleasm Modules.
[root@db1 ~]#
15

Section 15

systemctl status oracleasm Active: active Caution: Your use of any information or materials on this website is entirely at your own risk. It is provided for educational purposes only. It has been tested internally, however, we do not guarantee that it will work for you. Ensure that you run it in your test environment before using. Caution: Your use of any information or materials on this website is entirely at your own risk. It is provided for educational purposes only. It has been tested internally, however, we do not guarantee that it will work for you. Ensure that you run it in your test environment before using. Reference:
16

Section 16

Oracle Linux 8: How To Install ASMLib (Doc ID 2720215.1) Oracle ASMLib Software Update and Support Policy (Doc ID 1089399.1) https://docs.oracle.com/en/database/oracle/oracle-database/12.2/ladbi/installing-and-configuring-oracle-asmlib-software.html#GUID-79F9D58F-E5BB-45BD-A664-260C0502D876 https://www.oracle.com/linux/downloads/linux-asmlib-v8-downloads.html

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