SCSI Kernel Parameters¶
See The kernel’s command-line parameters for general information on specifying module parameters.
This document may not be entirely up to date and comprehensive. The command
modinfo -p ${modulename} shows a current list of all parameters of a loadable
module. Loadable modules, after being loaded into the running kernel, also
reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
parameters may be changed at runtime by the command
echo -n ${value} > /sys/module/${modulename}/parameters/${parm}.
advansys=       [HW,SCSI]
                See header of drivers/scsi/advansys.c.
aha152x=        [HW,SCSI]
                See Documentation/scsi/aha152x.rst.
aha1542=        [HW,SCSI]
                Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]]
aic7xxx=        [HW,SCSI]
                See Documentation/scsi/aic7xxx.rst.
aic79xx=        [HW,SCSI]
                See Documentation/scsi/aic79xx.rst.
atascsi=        [HW,SCSI]
                See drivers/scsi/atari_scsi.c.
BusLogic=       [HW,SCSI]
                See drivers/scsi/BusLogic.c, comment before function
                BusLogic_ParseDriverOptions().
gvp11=          [HW,SCSI]
ips=            [HW,SCSI] Adaptec / IBM ServeRAID controller
                See header of drivers/scsi/ips.c.
mac5380=        [HW,SCSI]
                See drivers/scsi/mac_scsi.c.
scsi_mod.max_luns=
                [SCSI] Maximum number of LUNs to probe.
                Should be between 1 and 2^32-1.
scsi_mod.max_report_luns=
                [SCSI] Maximum number of LUNs received.
                Should be between 1 and 16384.
NCR_D700=       [HW,SCSI]
                See header of drivers/scsi/NCR_D700.c.
ncr5380=        [HW,SCSI]
                See Documentation/scsi/g_NCR5380.rst.
ncr53c400=      [HW,SCSI]
                See Documentation/scsi/g_NCR5380.rst.
ncr53c400a=     [HW,SCSI]
                See Documentation/scsi/g_NCR5380.rst.
ncr53c8xx=      [HW,SCSI]
osst=           [HW,SCSI] SCSI Tape Driver
                Format: <buffer_size>,<write_threshold>
                See also Documentation/scsi/st.rst.
scsi_debug_*=   [SCSI]
                See drivers/scsi/scsi_debug.c.
scsi_mod.default_dev_flags=
                [SCSI] SCSI default device flags
                Format: <integer>
scsi_mod.dev_flags=
                [SCSI] Black/white list entry for vendor and model
                Format: <vendor>:<model>:<flags>
                (flags are integer value)
scsi_mod.scsi_logging_level=
                [SCSI] a bit mask of logging levels
                See drivers/scsi/scsi_logging.h for bits.  Also
                settable via sysctl at dev.scsi.logging_level
                (/proc/sys/dev/scsi/logging_level).
                There is also a nice 'scsi_logging_level' script in the
                S390-tools package, available for download at
                https://github.com/ibm-s390-linux/s390-tools/blob/master/scripts/scsi_logging_level
scsi_mod.scan=  [SCSI] sync (default) scans SCSI busses as they are
                discovered.  async scans them in kernel threads,
                allowing boot to proceed.  none ignores them, expecting
                user space to do the scan.
sim710=         [SCSI,HW]
                See header of drivers/scsi/sim710.c.
st=             [HW,SCSI] SCSI tape parameters (buffers, etc.)
                See Documentation/scsi/st.rst.
wd33c93=        [HW,SCSI]
                See header of drivers/scsi/wd33c93.c.