Guidelines for using the disconnect command in a host cluster environment
Following are the guidelines for using snapdrive storage disconnect
command in a host cluster environment:
-
The
snapdrive storage disconnect
command can be executed from any node in the host cluster. -
For the storage disconnect operation to be successful, either of the following should be true:
-
The storage entities should be shared across all the nodes in the host cluster.
-
The LUNs should be mapped to all the nodes in the host cluster.
-
-
You can disconnect a storage entity from a specific node using the
-devicetype dedicated
option or by omitting the-devicetype
option in the command altogether, because the default value is dedicated. -
The
snapdrive storage disconnect
command gives an error if a shared storage entity or LUN is disconnected withdedicated
option, or if a dedicated storage entity or LUN is disconnected withshared
option. -
SnapDrive for UNIX executes the
snapdrive storage disconnect
command on the master node. It destroys the storage entities, disconnects the LUNs on all the nonmaster nodes, and then disconnects the LUNs from the master node in the host cluster. If any error message occurs during this sequence, the storage disconnect operation fails.