Fix: ORA-15081: failed to submit an I/O operation to a disk; Unmounting ASMlib driver filesystem: failed

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Error Description

Oracle clusterware configuration failed with ORA-15081 and PROC-26: Error while accessing the physical storage. Also oracleasm exit command failed with “Unable to unmount ASMlib driver filesystem”

Disk Group OCRVOTE created successfully.

Errors in file :

ORA-27091: unable to queue I/O

ORA-15081: failed to submit an I/O operation to a disk

ORA-06512: at line 4

PROT-1: Failed to initialize ocrconfig

PROC-26: Error while accessing the physical storage

ORA-27091: unable to queue I/O

ORA-15081: failed to submit an I/O operation to a disk

ORA-06512: at line 4

[root@Node2 ~]# /usr/sbin/oracleasm exit

Unmounting ASMlib driver filesystem: failed

Unable to unmount ASMlib driver filesystem

Solution Description

Check what is the process accessing the /dev/oracleasm using lsof command and kill the process id. Then try to execute oracleasm exit command.

lsof /dev/oracleasm

[root@xlaccd110 ~]# lsof /dev/oracleasm

COMMAND     PID   USER   FD   TYPE DEVICE SIZE/OFF                 NODE NAME

oracle_12  1222 oracle   11u   REG   0,36        0 18446612134580837288 /dev/oracleasm/iid/00000000000000A0

[root@xlaccd110 ~]# kill -9 1222

[root@Node2 /]# /usr/sbin/oracleasm exit

Unmounting ASMlib driver filesystem: /dev/oracleasm

Unloading module "oracleasm": oracleasm

Now you can try creating the asm disks using /usr/sbin/oracleasm createdisk command and then try the clusterware installation again. 

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