Hi,
I have an Oracle 12.1.0.2 Grid Infrastructure setup with three-nodes. There
exist multiple ASM disk groups that are managed by this setup. One of the disk
groups is called GRID and it hosts the OCR and voting disks. Recently I have
noticed that one of the ASM disks in this group has MOUNT_STATUS='CLOSED" and
HEADER_STATUS='MEMBER' as shown below:
The following data was captured from V$ASM_DISK but it is consistent on all
nodes if queried from GV$ASM_DISK:
OS disk Space Space
Disk
Mount Header Mode Disk Size Total Free ASM
Disk Failgroup Vote
Grp# Disk# Status Status Status State (MB) (MB) (MB) Name
Name Disk path file
---- ----- ------- ------------ ------- -------- ------- ------- -------
---------- ---------- ------------------------------ ----
0 0 CLOSED MEMBER ONLINE NORMAL 20,490 0 0
/dev/oracleasm/grid/asmgrid01 Y
2 0 CACHED MEMBER ONLINE NORMAL 20,490 20,480 9,987
GRID_0000 GRID_0000 /dev/oracleasm/grid/asmgrid03 Y
2 1 CACHED MEMBER ONLINE NORMAL 20,490 20,480 9,987
GRID_0001 GRID_0001 /dev/oracleasm/grid/asmgrid02 Y
The disk that is not showing up is GRID_0002 and the block device name is
/dev/oracleasm/grid/asmgrid01. The only change that has been made recently was
that the OS on all three nodes was upgraded from RHEL6 to RHEL7. I have tried
to drop this disk from the DG but that didn't work and I got the message that
this disk is not part of the GRID DG.
What is the best way to resolve this issue? Should I overwrite the header of
this device using dd so that it becomes a candidate disk? Any help will be
appreciated.
Thank you,
Amir
