在安裝GRID過程中，運行root.sh腳本時報如下信息：
Adding Clusterware entries to upstart CRS-2672: Attempting to start 'ora.mdnsd' on 'rac11g1' CRS-2676: Start of 'ora.mdnsd' on 'rac11g1' succeeded CRS-2672: Attempting to start 'ora.gpnpd' on 'rac11g1' CRS-2676: Start of 'ora.gpnpd' on 'rac11g1' succeeded CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac11g1' CRS-2672: Attempting to start 'ora.gipcd' on 'rac11g1' CRS-2676: Start of 'ora.gipcd' on 'rac11g1' succeeded CRS-2676: Start of 'ora.cssdmonitor' on 'rac11g1' succeeded CRS-2672: Attempting to start 'ora.cssd' on 'rac11g1' CRS-2672: Attempting to start 'ora.diskmon' on 'rac11g1' CRS-2676: Start of 'ora.diskmon' on 'rac11g1' succeeded CRS-2676: Start of 'ora.cssd' on 'rac11g1' succeeded ASM created and started successfully. Disk Group ocr 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 Failed to create Oracle Cluster Registry configuration, rc 255 Oracle Grid Infrastructure Repository configuration failed at /u01/app/11.2.0/grid/crs/install/crsconfig_lib.pm line 6919. /u01/app/11.2.0/grid/perl/bin/perl -I/u01/app/11.2.0/grid/perl/lib -I/u01/app/11.2.0/grid/crs/install /u01/app/11.2.0/grid/crs/install/rootcrs.pl execution failed
google中有人遇到類似的錯誤，原因是：
Diskgroup is succesfully created, root.sh fails at generating the OCR keys when invoking ocrconfig because userid used for ASMlib driver differs from grid software owner.
本次安裝是使用udev，檢查udev腳本配置的時候發現asm磁盤的對應屬主是grid，而安裝時使用的對應的操作系統用戶是oragrid。
最后修改udev配置文件，將asm磁盤修改成正確的屬主。