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

Today, I will talk to you about what the configuration of linux udev is. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

1. Query DISK uuid

# / usr/lib/udev/scsi_id-g-u / dev/sdb

Get the uuid that needs to be bound to an ASM Disk disk

For i in b c d e f g

Do

Echo "sd$i"`/ usr/lib/udev/scsi_id-whitelisted-replace-whitespace-device=/dev/sd$ i`"

Done

two。 Edit the udev rule file

(1) .Create UDEV Permission Rule Prior Up-To Version 11.1.0.7

# / bin/cat / etc/udev/rules.d/99-raw.rules

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/%P", RESULT== "3600805f30016c0e0ad41ffa8e6d90001", NAME= "raw1", ACTION== "add | change", OWNER= "root", GROUP= "oinstall", MODE= "0640"

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/%P", RESULT== "3600805f30016c0e0ae51efbfb2930002", NAME= "raw2", ACTION== "add | change", OWNER= "oracle", GROUP= "oinstall", MODE= "0660"

(2). Create UDEV Permission Rule For Version 11.2 And Later

For RHEL5/OL5/OL5

# / bin/cat / etc/udev/rules.d/99-oracle-asmdevices.rules

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/%P", RESULT== "350002ac000010b52", NAME= "vote1", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/%P", RESULT== "350002ac000020b52", NAME= "vote2", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id-g-u-s / block/%P", RESULT== "350002ac000030b52", NAME= "vote3", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

For RHEL6/OL6

# / bin/cat / etc/udev/rules.d/99-oracle-asmdevices.rules

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id I-- whitelisted-- device=/dev/$name", RESULT== "350002ac000010b52", NAME= "vote1", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id I-- whitelisted-- device=/dev/$name", RESULT== "350002ac000020b52", NAME= "vote2", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

KERNEL== "sd*", BUS== "scsi", PROGRAM== "/ sbin/scsi_id I-- whitelisted-- device=/dev/$name", RESULT== "350002ac000030b52", NAME= "vote3", ACTION== "add | change", OWNER= "grid", GROUP= "asmadmin", MODE= "0660"

For RHEL7

# / bin/cat / etc/udev/rules.d/99-oracle-asmdevices.rules

KERNEL== "sd* [! 0-9]", ENV {DEVTYPE} = = "disk", SUBSYSTEM== "block", PROGRAM== "/ usr/lib/udev/scsi_id-g-u-d $devnode", RESULT== "1IET_00020002", RUN+= "/ bin/sh-c 'mknod / dev/asmdisk01p1 b $major $minor; chown grid:dba / dev/asmdisk01p1; chmod 0660 / dev/asmdisk01p1'"

Quickly generate scripts:

Redhat 6

For i in b c d e f g

Do

Echo "KERNEL==\" sd*\ ", BUS==\" scsi\ ", PROGRAM==\" / sbin/scsi_id-- whitelisted-- replace-whitespace-- device=/dev/\ $name\ ", RESULT==\" `/ sbin/scsi_id-- whitelisted-- replace-whitespace-- device=/dev/sd$ i` ", NAME=\" asm-disk$i\ ", OWNER=\" grid\ ", GROUP=\" asmadmin\ ", MODE=\" 0660\ ""

Done

Redhat 7

For i in b c d e f g

Do

Echo "KERNEL==\" sd*\ ", ENV {DEVTYPE} = =\" disk\ ", SUBSYSTEM==\" block\ ", PROGRAM==\" / usr/lib/udev/scsi_id-g-u-d\ $devnode\ ", RESULT==\" `/ usr/lib/udev/scsi_id-g-u / dev/sd$ i`\ ", RUN+=\" / bin/sh-c 'mknod / dev/asmdisk$i b\ $major\ $minor; chown grid:asmadmin / dev/asmdisk$i; chmod 0660 / dev/asmdisk$i'\ ""

Done

3. Restart UDEV to make the configuration effective

On RHEL5/OL5:

# / sbin/udevcontrol reload_rules

# / sbin/start_udev

On RHEL6/OL6:

# / sbin/udevadm control-reload-rules

# / sbin/start_udev

On RHEL7:

-Check for new device name:

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

# / bin/ls / dev/asmdisk01p1

-To reload udev rule execute below command:

# / sbin/udevadm control-reload

-For Troubleshooting udev rule execute below command:

# / sbin/udevadm test / sys/block/sdb

After reading the above, do you have any further understanding of the configuration of linux udev? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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