====== Exporting disk image files via SRP on Linux ======

===== Installing the SRP target software =====

You need to download and install the Generic SCSI Target Subsystem for Linux (**SCST**) from [[http://scst.sourceforge.net/downloads.html]].  Building and installing this software is outside the scope of this document.

===== Adding an SRP target image =====

To add a disk image file as an SRP target, you need to add the following four lines to ///etc/scst.conf//:

    [HANDLER vdisk]
    DEVICE srpboot,/path/to/image/file.img,,512
    
    [ASSIGNMENT Default]
    DEVICE srpboot,0

where ///path/to/image/file.img// is the path to your disk image file.

Reload the SCST configuration:

    /etc/init.d/scst reload

and check that the SRP target is visible:

    ibsrpdm && ibsrpdm -c

You should see something like

    IO Unit Info:
        port LID:        0001
        port GID:        fe800000000000000002c9030001c65b
        change ID:       0100
        max controllers: 0x10
    
        controller[  1]
            GUID:      0002c9030001c65a
            vendor ID: 000002
            device ID: 006732
            IO class : 0100
            ID:        SCST SRP target
            service entries: 1
                service[  0]: 0002c9030001c65a / SRP.T10:0002c9030001c65a
    
    id_ext=0002c9030001c65a,ioc_guid=0002c9030001c65a,
    dgid=fe800000000000000002c9030001c65b,
    pkey=ffff,service_id=0002c9030001c65a

Make a note of the SRP target parameters **id_ext**, **ioc_guid**, **dgid** and **service_id**.  You are now ready to

  * [[:sanboot:srp_boot|Boot from your SRP target image]]