Issue: After MDM cutover, sc3.3 nodes on ldom panicked when checking cluster status. OS log showed cluster lost access to quorum dev which is part of the MDM.
Recommendations:
- No access to LUNs during migration, especially quorum device. Cluster related operations will trigger access to LUNs including quorum. Opening FS mount point will also trigger access to corresponding LUNs. These operations are not allowed for LUNs in migration.
- It is mandatory to always use -move_identity when migrating Solaris Cluster Environments with MDM.
- Immediately run a path rescan after the MDM creation command if not using the -precopy option.
- Paths to source will become unusable after a cancellation and require a cfadm -c configure to allow them to be used again.