lsscsi for lk 2.5.51

Since sysfs now contains a reasonable amount of data about scsi devices, it is possible to write an application that scans this information and presents it in a "ls" form (akin to lspci and lsusb).

Attached is a toy program called lsssci that could grow into something more useful. It requires lk 2.5.51 or later.

$ lsscsi
[4:0:0:0]  CDROM   CREATIVE CD5233E          1.00  /dev/sr0
[3:0:0:0]  disk    Linux    scsi_debug       0004  /dev/sdb
[2:0:6:0]  tape    SONY     SDT-7000         0192
[0:0:8:0]  disk    FUJITSU  MAM3184MP        0105  /dev/sda

This output corresponds to my system which has these "scsi" devices:

$ cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 08 Lun: 00
  Vendor: FUJITSU  Model: MAM3184MP        Rev: 0105
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi2 Channel: 00 Id: 06 Lun: 00
  Vendor: SONY     Model: SDT-7000         Rev: 0192
  Type:   Sequential-Access                ANSI SCSI revision: 02
Host: scsi3 Channel: 00 Id: 00 Lun: 00
  Vendor: Linux    Model: scsi_debug       Rev: 0004
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi4 Channel: 00 Id: 00 Lun: 00
  Vendor: CREATIVE Model: CD5233E          Rev: 1.00
  Type:   CD-ROM                           ANSI SCSI revision: 02

sysfs doesn't provide the ANSI SCSI revision number associated with each device (hopefully Pat can add that in the future). Otherwise, all the information that /proc/scsi/scsi uses 3 lines per device for, can be compressed onto one line. Putting the device node (e.g. /dev/sda) seems a useful addition. [That latter addition is only done currently for block scsi devices (hence it doesn't appear for the tape).]

Doug Gilbert

Done a bit more work on lsscsi:
- entries now sorted by host,channel,id,lun tuple
- "classic" option ('-c') that outputs just like 'cat /proc/scsi/scsi'
- added a few more switches and fixed some bugs.

There is a small web page at:
http://www.torque.net/scsi/lsscsi.html
On it there are links to a tarball, binary and source rpms.

Doug Gilbert