proc_scsi(5)                  File Formats Manual                 proc_scsi(5)

NAME
       /proc/scsi/ - SCSI

DESCRIPTION
       /proc/scsi/
              A directory with the scsi mid-level pseudo-file and various SCSI
              low-level driver directories, which contain a file for each SCSI
              host in this system, all of which give the status of some part
              of the SCSI IO subsystem.  These files contain ASCII structures
              and are, therefore, readable with cat(1).

              You can also write to some of the files to reconfigure the
              subsystem or switch certain features on or off.

       /proc/scsi/scsi
              This is a listing of all SCSI devices known to the kernel.  The
              listing is similar to the one seen during bootup.  scsi
              currently supports only the add-single-device command which
              allows root to add a hotplugged device to the list of known
              devices.

              The command

                  echo 'scsi add-single-device 1 0 5 0' > /proc/scsi/scsi

              will cause host scsi1 to scan on SCSI channel 0 for a device on
              ID 5 LUN 0.  If there is already a device known on this address
              or the address is invalid, an error will be returned.

       /proc/scsi/drivername/
              drivername can currently be NCR53c7xx, aha152x, aha1542,
              aha1740, aic7xxx, buslogic, eata_dma, eata_pio, fdomain, in2000,
              pas16, qlogic, scsi_debug, seagate, t128, u15-24f, ultrastore,
              or wd7000.  These directories show up for all drivers that
              registered at least one SCSI HBA.  Every directory contains one
              file per registered host.  Every host-file is named after the
              number the host was assigned during initialization.

              Reading these files will usually show driver and host
              configuration, statistics, and so on.

              Writing to these files allows different things on different
              hosts.  For example, with the latency and nolatency commands,
              root can switch on and off command latency measurement code in
              the eata_dma driver.  With the lockup and unlock commands, root
              can control bus lockups simulated by the scsi_debug driver.

SEE ALSO
       proc(5)

Linux man-pages 6.9.1             2024-05-02                      proc_scsi(5)