AFD labelled disks not accessible when asm_diskstring not set to AFD:* (Doc ID 2287776.1)

Last updated on JULY 26, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Diskgroup not mounting as per IO error accessing disks.

The following is the error:
2017-07-17T16:16:28.851315-04:00
SQL> alter diskgroup data mount force
2017-07-17T16:16:28.860436-04:00
NOTE: cache registered group DATA 2/0xC8E3CB63
NOTE: cache began mount (first) of group DATA 2/0xC8E3CB63
NOTE: Assigning number (2,0) to disk (/dev/oracle/rdsk/data_disk01)
NOTE: Assigning number (2,1) to disk (/dev/oracle/rdsk/data_disk02)
NOTE: Assigning number (2,2) to disk (/dev/oracle/rdsk/data_disk03)
NOTE: Assigning number (2,3) to disk (/dev/oracle/rdsk/data_disk04)
NOTE: Assigning number (2,4) to disk (/dev/oracle/rdsk/data_disk05)
NOTE: Assigning number (2,5) to disk (/dev/oracle/rdsk/data_disk06)
NOTE: Assigning number (2,6) to disk (/dev/oracle/rdsk/data_disk07)
NOTE: Assigning number (2,7) to disk (/dev/oracle/rdsk/data_disk08)
NOTE: Assigning number (2,8) to disk (/dev/oracle/rdsk/data_disk09)
2017-07-17T16:16:29.075325-04:00
WARNING: Write Failed. group:2 disk:0 AU:1 offset:4190208 size:4096
path:/dev/oracle/rdsk/data_disk01
incarnation:0xaa933bf6 asynchronous result:'I/O error'
subsys:System krq:0xffffffff7af70420 bufp:0xffffffff7b374000 osderr1:0x69be osderr2:0x0
IO elapsed time: 0 usec Time waited on I/O: 0 usec
WARNING: Hbeat write to PST disk 0.2861775862 in group 2 failed. [2]
ERROR: GMON could not set any hearbeat during mount [grp 2 (DATA)]

ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA" cannot be mounted

Changes

 Disks wrongly labelled with AFD 

Cause

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