Method and arrangement for dynamic detection of SCSI devices on linux host

An arrangement for dynamically detecting SCSI devices on a Linux host, comprising:

• means for issuing a first command to return an actual number of hosts that are currently installed in a Linux system, and a maximum number of buses and targets supported by the Linux system;
• means for issuing a second command to all hosts, buses and targets returned in response to the first command, but only to lun(0) of each returned target, the second command prompting each responding lun (0) to report all lun(x)'s known to the target;
• and
• means for creating a new device structure in real time for each reported lun, each new device structure representing a detected SCSI device.

A method, for use in a storage network, enabling a kernel component of a Linux system supporting the storage network to dynamically detect one or more SCSI devices, so that a user application accessing the storage network may communicate with the SCSI devices, comprising:

• the user application
• issuing a first command to the kernel component to return an actual number of hosts that are currently installed in a Linux system, and a maximum number of buses and targets supported by the Linux system;
• and
• issuing a second command to all hosts, buses and targets returned in response to the first command, but only to a logical unit number zero (lun(0)) of each returned target, the second command prompting each responding lun (0) to report all luns known to the target;
• and
• the kernel component
• creating a new device structure in real time for each reported lun, each new device structure representing a detected SCSI device.