Doubts about rawdevice in 11 GR 2

Hi gurus.

my version of oracle is 11.2.0.2.0 and at the rac.

one of my diskgroup had filled, so I was in a situation to add disks.

As asmlib is installed in my knots, I checked for any askdisks that is already exist

[root@racdboem001 ~] # /etc/init.d/oracleasm listdisks

[root@racdboem001 ~] #.

oracleasm listdisks-> it is not given to any output.

later through the asmca, I am able to add newly created disks. Alert log entries is given below

SQL > ALTER DISKGROUP DATA add DISK ' / dev/xvdj1 "SIZE M 14653,.

' / dev/xvdj2 "SIZE M 14653,.

' / dev/xvdj3 "SIZE M 14653 / * ASMCA * /.

Somewhere I red that, if we want to configure a raw device instead of asmlib configure ASM, we have to configure those drive in the/etc/sysconfig/rawdevices file and later we need run the service rawdevices restart

Here is my file

[root@racdboem001 ~] # cat/etc/sysconfig/rawdevices

raw device bindings #.

# format: < rawdev > < major > < minor >

# < rawdev > < blockdev >

example #: / dev/raw/raw1/dev/sda1

/ dev/raw/raw2 # 5 of 8

[root@racdboem001 ~] #.

In my configuration rawdevices file have no adjustments, How to change disk group will work?

I thank in advance for any help

Concerning

Mahi

Hi Manon,.

That's absolutely correct, you mustn't rawdevices them or configuration of stamps. However, you will need to add the following line in the rules file to ensure that they will have the permission after the restart udev:

CORE is "[1-3] xvdj", OWNER = 'oracle', GROUP is "dba", MODE = "660", ACTION is "add |" change '.

To ensure that they will be picked up after the next startup, you must change the asm_diskstring. What I usually configure asm_diskstring for read all devices, like that/dev/xvd *.

ALTER system set asm_diskstring = "/ dev/xvd *;

By making these two changes your newly added records will have the appropriate permissions and ASM will be able to find them after the next startup.

I would like to know if it is not yet clear.

Kind regards

EVS

Tags: Database

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