Systems and methods for storage area network switch port failure recovery.
A system may include several hosts, storage devices and a storage area
network (SAN) switch. The SAN switch may include several ports, where
each host is coupled to a respective host port and each storage device is
coupled to a respective storage port. The SAN switch may also include
virtualization logic configured to map several of the storage devices as
a volume presented to the hosts via the respective host ports, and an
input/output (I/O) tracking mechanism configured to store information
about write operations in progress at each of the ports. In response to a
failure of a given port occurring while write operation(s) to the volume
received via one or more of the respective host ports are in progress,
the SAN switch may be configured to initiate consistency recovery of the
volume using the stored information.