How to make previously read-only LUNs writable on RHEL after disk replication split without rebooting

Issue

EMC SRDF is being used for asynchronous disk replication between two sites. At the standby site, the SAN is configured as read-only. After splitting the disks (disabling replication), the SAN disks are made writable from the storage side. However, the server continues to detect these disks as read-only. The disks are recognized as writable only after rebooting the server.

However, rebooting the server is not a viable option in this scenario, as it would disrupt other critical workloads running on the system that cannot be interrupted.

Is there a way to 'refresh' the read-only status on the LUNs without rebooting?