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SCSI Kernel Parameters

Documentation/scsi/scsi-parameters.rst

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.. SPDX-License-Identifier: GPL-2.0

====================== SCSI Kernel Parameters

See Documentation/admin-guide/kernel-parameters.rst 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.