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Method and apparatus for identifying multiple paths to a SCSI device

  • US 20040064594A1
  • Filed: 10/01/2002
  • Published: 04/01/2004
  • Est. Priority Date: 10/01/2002
  • Status: Active Grant
First Claim
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1. A method for identifying multiple paths from a host to a small computer system interface (SCSI) device, comprising the steps of:

  • querying for one or more logical unit numbers (LUNs) pertaining to the SCSI device, each LUN representing a potential path from the host to the SCSI device;

    treating response data indicative of multiple LUNs to the SCSI device as separate instances of independent SCSI devices, each separate instance representing a different SCSI device structure;

    calculating a unique identifier (UID) for each SCSI device structure; and

    generating a device file based on the UID, the device file containing UID and path information that differentiates between multiple paths from the host to the SCSI device.

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