lsscsi 0.26 beta 2, add --wwn

lsscsi currently can provide some transport related WWN information when the --transport (-t) option is used. This will probably be a target port name rather than a LU name.
Fetching the LU name has proven elusive. The most direct way would be to issue an INQUIRY to get the device identification VPD page but that would require root permissions. A feature of lsscsi is that it doesn't need root permissions (or related tricks).

This beta adds a --wwn (-w) option which searches the udev provided /dev/disk/by-id/wwn-* symlinks. This will find WWNs (LU names) for disks if udev can find them.

If there is no averse feedback version 0.26 will be released in a few weeks.

There are two SATA disks in the example below: /dev/sda and /dev/sdd . /dev/sda has no WWN and is directly connected to a SATA controller on the motherboard. /dev/sdd has a WNN and is connected via a SAS expander.

# lsscsi
[1:0:0:0]    disk    ATA      ST3320620AS      3.AA  /dev/sda
[6:0:0:0]    enclosu Intel    RES2SV240        0600  -
[6:0:1:0]    disk    SEAGATE  ST33000650SS     0002  /dev/sdb
[6:0:2:0]    disk    SEAGATE  ST32000444SS     0006  /dev/sdc
[6:0:3:0]    disk    ATA      ST3500418AS      CC34  /dev/sdd

# lsscsi -w
[1:0:0:0]    disk                                    /dev/sda
[6:0:0:0]    enclosu                                 -
[6:0:1:0]    disk    0x5000c50033fe58db              /dev/sdb
[6:0:2:0]    disk    0x5000c500215725bf              /dev/sdc
[6:0:3:0]    disk    0x5000c500120bfe84              /dev/sdd

# lsscsi -t
[1:0:0:0]    disk    sata:                           /dev/sda
[6:0:0:0]    enclosu sas:0x5001517e85c3effd          -
[6:0:1:0]    disk    sas:0x5000c50033fe58d9          /dev/sdb
[6:0:2:0]    disk    sas:0x5000c500215725bd          /dev/sdc
[6:0:3:0]    disk    sas:0x5001517e85c3efe2          /dev/sdd

Version 0.26 beta 2 is available at:
http://sg.danny.cz/scsi/lsscsi.html
More information can be found on that page including examples and a Download section for the tarball:
http://sg.danny.cz/scsi/lsscsi-0.26b2.tgz
There are no debian or redhat packages built for this beta.

Version 0.26 2012/01/31 [svn: r97]
- add 'fcoe' transport indicator
- add '--wwn' option, datamine /dev/disk/by-id/wwn*
- move lsscsi.c into src directory

Version 0.25 2011/05/09 [svn: r92]
...

Doug Gilbert