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NAME | DESCRIPTION | SEE ALSO | COLOPHON |
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proc_scsi(5) File Formats Manual proc_scsi(5)
/proc/scsi/ - SCSI
/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.
proc(5)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.15.tar.gz
fetched from
⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2025-08-11. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.15 2025-05-17 proc_scsi(5)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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