Storage array LUN remapping is not supported by Oracle VM Servers. An Oracle VM Server must maintain the connections to a storage array's logical drive using the same LUN IDs. If a LUN is remapped, the following error may be printed in the Oracle VM Server's messages log:
Warning! Received an indication that the LUN assignments on this target have changed. The Linux SCSI layer does not automatically remap LUN assignments.
To work around this issue:
For Fibre Channel storage, reboot the Oracle VM Server. The new storage array LUN IDs are used.
For iSCSI storage, restart the iscsi daemon on the Oracle VM Server to delete and restore all iSCSI target connections, for example:
# service iscsi restart
Alternatively, on the Oracle VM Server, log out and log in again to the target for which the LUN IDs have changed, for example:
# iscsiadm --mode node --logout 10.196.211.136 iqn.xyz:1535.600a0b800036e48a0000000047b30d8d # iscsiadm --mode node --login 10.196.211.136 iqn.xyz:1535.600a0b800036e48a0000000047b30d8d