International Business Machines Corporation

Rajaboina Yadagiri

Sanket Rathi

Kiran Kumar Anumalasetty

Venkata N S Anumula

Vinod Kumar Boddukuri

James P Allen

I/O recovery for storage side cable movement in fabric-assigned WWPN fabrics including receiving a state change notification indicating a change to a first fabric-assigned world-wide port name (WWPN) on a fibre channel switch; pausing I/O activity for active logical unit numbers (LUNs) connected to the fibre channel switch via the first fabric-assigned WWPN; obtaining a list of potential fabric-assigned WWPNs; requesting, via the fibre channel switch, a reported list of LUNs from each fabric-assigned WWPN in the list of potential fabric-assigned WWPNs; comparing each reported list of LUNs to the paused active LUNs to determine a second fabric-assigned WWPN from the list of potential fabric-assigned WWPNs to which the paused active LUNs are connected; updating, with the second fabric-assigned WWPN, connection information for the paused active LUNs; and resuming I/O activity for the paused active LUNs using the updated connection information.

I/O recovery for storage side cable movement in fabric-assigned world-wide port name fabrics

A system and method for transferring a logical partition is provided that includes (i) a source server having a logical partition and at least one virtualized port for communication with at least one physical access port; (ii) a target server having at least one physical access port; and (iii) a storage server having a plurality of access ports, where a first access port is configurable to be in communication with the source server and a second, different access port is configurable to be in communication with the target server, wherein the logical partition has a first I/O path that includes the first access port of the storage server, and wherein the system and method is configurable to create a second I/O path for the logical partition that includes the second access port of the storage server.

Live partition migration of virtual machines across storage ports

An approach for avoiding overloads of network adapters. The approach receives one or more requests from one or more virtual machines, wherein the one or more requests are directed to one or more network adapters. The approach determines whether a first network adapter of the one or more network adapters is saturated. Responsive to a determination that the first network adapter is saturated, the approach sends a first busy event to a first virtual machine of the one or more virtual machines.

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Hyderabad Telangana, India

Rajaboina Yadagiri