Samples useful command for disk troubleshooting especially after disk replacement of a disk (e0_pd_01 here), despite a couple of reboot, reseat, etc, disk was showing status ‘unknown’ and state detail ‘NewDiskInserted’.
oakcli show disk oakcli stordiag e0_pd_01
From both nodes, check the differences and the extra (old) disk still being referenced. Remove it from either of the two files.
grep E0_S01 /etc/multipath.conf
From both node, check the consistency, update as necessary to match with the multipath.conf file
From all nodes
oakcli stop oak oakcli restart oak multipath -r multipath -F multipath -v 2
From master node:
oakcli reinit e0_pd_01
Now check that all disk are in ‘Good’ status
oakcli show disk
If the disk does not get be automatically added to the diskgroup, the following command may help:
ALTER DISK GROUP /+* _OAK_AsmCookie */ DATA ADD DISK '/dev/mapper/HDD_E0_S01_123456p1' NAME HDD_E0_S01_123456p1';
If that does not work, try the FORCE option