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Editor to share with you how to use udev to bind ASM disk under Linux 7, I believe most people do not know much about it, so share this article for your reference. I hope you will learn a lot after reading this article. Let's learn about it together.

For disk in `ls / dev/sd* `

Do

Echo $disk

/ usr/lib/udev/scsi_id-whitelisted-replace-whitespace-device=$disk

Done

-- generate the UUID of the device

[root@db12c_01 ~] # for disk in `ls / dev/sd* `

> do

> echo $disk

> / usr/lib/udev/scsi_id-whitelisted-replace-whitespace-device=$disk

> done

/ dev/sda

36000c296553b7ac67e22e3e60ac04462

/ dev/sda1

36000c296553b7ac67e22e3e60ac04462

/ dev/sda2

36000c296553b7ac67e22e3e60ac04462

/ dev/sdb

36000c298981418c7e8a25a89d0f836c9

/ dev/sdb1

36000c298981418c7e8a25a89d0f836c9

/ dev/sdc

36000c29dce09d16de88f435217838c9e

/ dev/sdc1

36000c29dce09d16de88f435217838c9e

/ dev/sdd

36000c29c3438303241fd1291834b1bd0

/ dev/sdd1

36000c29c3438303241fd1291834b1bd0

/ dev/sde

36000c291dec502efa9d3ae53c99f0028

/ dev/sde1

36000c291dec502efa9d3ae53c99f0028

/ dev/sdf

36000c29e29a4bcd75acea14e982ea49d

/ dev/sdf1

36000c29e29a4bcd75acea14e982ea49d

/ dev/sdg

36000c290ecd14020e2c7f41ee6a2916a

/ dev/sdg1

36000c290ecd14020e2c7f41ee6a2916a

Mapping file: / etc/udev/rules.d/99-oracle-asmdevices.rules

KERNEL== "sd?1", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d / dev/$parent", RESULT== "36000c298981418c7e8a25a89d0f836c9", SYMLINK+= "asm-diskb", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd?1", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d / dev/$parent", RESULT== "36000c29dce09d16de88f435217838c9e", SYMLINK+= "asm-diskc", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd?1", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d / dev/$parent", RESULT== "36000c29c3438303241fd1291834b1bd0", SYMLINK+= "asm-diskd", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd?1", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d / dev/$parent", RESULT== "36000c291dec502efa9d3ae53c99f0028", SYMLINK+= "asm-diske", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd?1", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d / dev/$parent", RESULT== "36000c29e29a4bcd75acea14e982ea49d", SYMLINK+= "asm-diskf", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

Let the configuration take effect:

/ sbin/udevadm trigger-type=devices-action=change

Udevadm control-reload-rules

View the device name after it takes effect:

[root@db12c_01 ~] # ls-l / dev/as*

Lrwxrwxrwx 1 root root 4 Nov 21 00:38 / dev/asm-diskb-> sdb1

Lrwxrwxrwx 1 root root 4 Nov 21 00:38 / dev/asm-diskc-> sdc1

Lrwxrwxrwx 1 root root 4 Nov 21 00:38 / dev/asm-diskd-> sdd1

Lrwxrwxrwx 1 root root 4 Nov 21 00:38 / dev/asm-diske-> sde1

Lrwxrwxrwx 1 root root 4 Nov 21 00:38 / dev/asm-diskf-> sdf1

When doing the configuration, you need to read the partition information of the disk when you find the second node configuration before you can bind it successfully.

[root@db12c_02 ~] # fdisk / dev/sdf

Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.

Be careful before using the write command.

Command (m for help): P

Disk / dev/sdf: 4294 MB, 4294967296 bytes, 8388608 sectors

Units = sectors of 1 * 512 = 512 bytes

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

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

Disk label type: dos

Disk identifier: 0xc1b37f09

These are all the contents of the article "how to bind ASM disks with udev under Linux 7". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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