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Linux how to use udev to create ASM DISK, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

1. View the system environment

Kernel version:

[root@rh74 rules.d] # uname-a

Linux rh74 2.6.32-358.el6.x86_64 # 1 SMP Tue Jan 29 11:47:41 EST 2013 x86 "64 GNU/Linux

System users:

[root@rh74 rules.d] # id grid

Uid=400 (grid) gid=400 (asmadmin) groups=400 (asmadmin)

Second, create a shared disk (you can use partitions or separate disks)

[root@rh74 ~] # fdisk-l

Disk / dev/sdc: 24.3 GB, 24323964928 bytes

255 heads, 63 sectors/track, 2957 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

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

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

Disk identifier: 0x00000000

View disk UUID:

[root@rh74] # / sbin/scsi_id-g-u-d / dev/sdc

1ATA_VBOX_HARDDISK_VB3d5ccb5e-9c197b67

Scsi_id-gud / dev/sdc

Disk Partition:

[root@rh74 ~] # fdisk-l

Disk / dev/sdc: 24.3 GB, 24323964928 bytes

255 heads, 63 sectors/track, 2957 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

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

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

Disk identifier: 0xeb09f8d3

Device Boot Start End Blocks Id System

/ dev/sdc1 1 915 7349706 83 Linux

/ dev/sdc2 916 1830 7349737 + 83 Linux

/ dev/sdc3 1831 2957 9052627 + 83 Linux

Third, establish UDEV rule documents

[root@rh74 ~] # cd / etc/udev/rules.d/

[root@rh74 rules.d] # ls

60-fprint-autosuspend.rules 60-raw.rules 80-kvm.rules 97-bluetooth-serial.rules

60-openct.rules 70-persistent-cd.rules 90-alsa.rules 98-kexec.rules

60-pcmcia.rules 70-persistent-net.rules 90-hal.rules 99-fuse.rules

[root@rh74 rules.d] # cat 99-oracle-asmdisk.rules

KERNEL== "sdc1", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-d / dev/$parent", RESULT== "1ATA_VBOX_HARDDISK_VB3d5ccb5e-9c197b67", NAME= "asm_disk1", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sdc2", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-d / dev/$parent", RESULT== "1ATA_VBOX_HARDDISK_VB3d5ccb5e-9c197b67", NAME= "asm_disk2", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sdc3", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-d / dev/$parent", RESULT== "1ATA_VBOX_HARDDISK_VB3d5ccb5e-9c197b67", NAME= "asm_disk3", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

4. Start udev service

Load the configuration file:

[root@rh74 rules.d] # udevadm control-- reload-rules

Start udev service:

[root@rh74 rules.d] # start_udev

Starting udev:

View asm disks:

[root@rh74 rules.d] # ls-l / dev/asm*

Brw-rw---- 1 grid asmadmin 8, 33 Jan 13 16:52 / dev/asm_disk1

Brw-rw---- 1 grid asmadmin 8, 34 Jan 13 16:52 / dev/asm_disk2

Brw-rw---- 1 grid asmadmin 8, 35 Jan 13 16:52 / dev/asm_disk3

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