Patent ID: 7818473
Filing Date: 2010-10-19
Classification: G06F

Abstract:
1. A method of packaging locate record commands for device command word (DCW) processing in a computer environment having an I/O link handling complex instruction chains for a processing operation, the method comprising: packaging a first locate record command into DCW prefix parameter data, the first locate record command including first search and first seek arguments, a first intent count argument, a first transfer length factor argument, and a plurality of remaining arguments; and embedding a plurality of truncated locate record commands in the DCW prefix parameter data as concatenations to the first locate record command, wherein: each of the plurality of truncated locate record commands include a unique search argument, intent count argument, and transfer length factor argument, seek argument parameters for each of the plurality of truncated locate record commands are calculated by taking an offset from the first seek argument and the first search argument, applying the offset to each of the plurality of truncated locate record commands, and the plurality of remaining arguments are shared between the first locate record command and the plurality of truncated locate record commands, wherein, if one of the plurality of remaining arguments of the first locate record command and one of the plurality of embedded truncated locate record commands differ, breaking an input/output (I/O) chain containing the first locate record command and the one of the plurality of embedded truncated locate record commands into two requests.