RedHat bare device startup configuration for RAC

After installing rac10gforredhatas4 and rac10gforredhatas5, you can find that the configuration of the bare device is different from the self-start configuration. The configuration of the two versions is listed below. 1. linuxredhat

By installing rac 10g for redhat as 4 and rac 10g for redhat as 5, we can find that the configuration of bare devices is different from the self-start configuration. The configuration of the two versions is listed below. 1. linux redhat

By installing rac 10g for RedHat as 4 and rac 10g for redhat as 5, it is found that the self-starting configuration of bare devices is different.

The configurations of the two versions are listed below

1. linux redhat as 4

Edit the/etc/sysconfig/rawdevices file, adding the following lines. (add bare device ing)

/Dev/raw/raw1/dev/sdb1

/Dev/raw/raw2/dev/sdc1

// Change the bare device owner and group

Chown Oracle: oinstall/dev/raw/raw1

Chown oracle: oinstall/dev/raw/raw2

// Change the device access permission

Chmod 600/dev/raw/raw1

Chmod 600/dev/raw/raw2

Modify/etc/udev/permissions. d/50-udev.permissions,

[Root @ rac1 ~] # Vi/etc/udev/permissions. d/50-udev.permissions

# Raw devices

Ram *: root: disk: 0660

# Raw/*: root: disk: 0660

Raw/*: oracle: dba: 0660 is automatically loaded to oracle users when the machine is started.

2. linux redhat as 5

Because rawdevices service is canceled in rh5, the following configuration is required to use bare devices.

[Root @ raw1 ~] # Vi/etc/udev/rules. d/60-raw.rules

Add the following content

ACTION = "add", KERNEL = "sdb1", RUN + = "/bin/raw/dev/raw/raw1% N"

-R9El: h'kdp3u0action = "add", ENV {MAJOR }= "8", ENV {MINOR} = "1 ", RUN + = "/bin/raw/dev/raw/raw2% M % m"

// Then run the command to start the device

[Root @ raw1 ~] # Start_udev

Starting udev: [OK]

Supplement:

Today I encountered a problem, that is, when I used a hard disk for the ASM instance and divided it into two partitions to install ASM, ACTION = "add ", ENV {MAJOR} = "8", ENV {MINOR} = "1 ", RUN + = "/bin/raw/dev/raw/raw2% M % m" The following ENV {MINOR} = "1" cannot start the bare device if the setting is incorrect, how can I set it correctly?

Suddenly, a bare device supports up to 255 disks and each hard disk has 16 partitions. I mounted a hard disk and divided it into three partitions. The device number is 17,18, 19. How can I view the Partition Number of a device? You can also view the Partition Number in this way and go to DEV to view it: ll/dev/* you can see that the attribute of your partition contains 8 to characters. Think about it. When doing RAC in most documents, three virtual machine hard disks are used, I configured and mounted the hard disk from the device numbers such as 17,33 and 49, which further confirmed my ideas.