| US 7,609,643 B2 | ||
| Transfer of error-analysis and statistical data after retry in a fibre channel input/output system | ||
| Robert J. Dugan, Hyde Park, N.Y. (US); John R. Flanagan, Poughkeepsie, N.Y. (US); Giles R. Frazier, Austin, Tex. (US); Matthew J. Kalos, Tucson, Ariz. (US); Louis W. Ricci, Hyde Park, N.Y. (US); Kenneth M Trowell, Terry Hills (Australia); and Harry M. Yudenfriend, Poughkeepsie, N.Y. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Oct. 09, 2007, as Appl. No. 11/869,173. | ||
| Application 11/869173 is a continuation of application No. 10/388643, filed on Mar. 03, 2003, granted, now 7,324,455. | ||
| Prior Publication US 2008/0034250 A1, Feb. 07, 2008 | ||
| Int. Cl. H04L 12/26 (2006.01) | ||
| U.S. Cl. 370—248 [714/57] | 18 Claims |
| 1. A method in a computer I/O system having a channel in network communications with a control unit, the method comprising:
initiating by the channel, an I/O operation to the control unit;
detecting by the channel, a link/protocol error in a link between the channel and the control unit;
gathering by the channel, error data about the link/protocol error;
receiving by the channel, error data about the link/protocol error gathered in the control unit;
retrying the I/O operation one or more times; and
making the error data received from the control unit and gathered by the channel available to a host computer for analysis.
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