Shulou(Shulou.com)06/01 Report--

1. Description of requirements

Customers want to use udev service to solve RAC ASM storage device names under Oracle Linux5.8, and hope to achieve the following correspondence

/ dev/sdc1 / dev/asm-disk1/dev/sdd1 / dev/asm-disk2/dev/sde1 / dev/asm-disk3

2. Disk partition

-- omit--

Note: after partitioning, use parted to make the disk partition effective.

3. Check the disk device ID number (the device id number of each device is unique, which is required when writing udev rules)

[root@dfyl rules.d] # scsi_id-g-s / block/sdc36000c2908c33001d8572add242aed36f [root@dfyl rules.d] # scsi_id-g-s / block/sdd36000c291ad0f8d7d5df9a36253b7063d [root@dfyl rules.d] # scsi_id-g-s / block/sde36000c2937b2c00717cafcf2c7fa7b595 [root@dfyl rules.d] # echo "options=-g" > > / etc/scsi_id.config

4. Write udev rules

[root@dfyl ~] # cd / etc/udev/rules.d/ [root@dfyl rules.d] # vim 80-oracle-asmdevices.rules KERNEL== "sdc1", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/$parent", RESULT== "36000c2908c33001d8572add242aed36f", NAME= "asm-disk1", OWNER= "oracle", GROUP= "dba", MODE= "0660" KERNEL== "sdd1", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/$parent", RESULT== "36000c291ad0f8d7d5df9a36253b7063d" NAME= "asm-disk2", OWNER= "oracle", GROUP= "dba", MODE= "0660" KERNEL== "sde1", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/$parent", RESULT== "36000c2937b2c00717cafcf2c7fa7b595", NAME= "asm-disk3", OWNER= "oracle", GROUP= "dba", MODE= "0660"

5. Start udev

[root@dfyl rules.d] # start_udevStarting udev: [OK]

6. Check the mapping relationship

[root@dfyl rules.d] # ll / dev/asm-*brw-rw---- 1 oracle dba 8, 33 Apr 5 12:04 / dev/asm-disk1brw-rw---- 1 oracle dba 8, 49 Apr 5 12:04 / dev/asm-disk2brw-rw---- 1 oracle dba 8, 65 Apr 5 12:08 / dev/asm-disk3

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