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CONFIG_SCSI_DEBUG: SCSI debugging host and device simulator

General informations

The Linux kernel configuration item CONFIG_SCSI_DEBUG has multiple definitions:

SCSI debugging host and device simulator found in drivers/scsi/Kconfig

The configuration item CONFIG_SCSI_DEBUG:

Help text

This pseudo driver simulates one or more hosts (SCSI initiators), each with one or more targets, each with one or more logical units. Defaults to one of each, creating a small RAM disk device. Many parameters found in the /sys/bus/pseudo/drivers/scsi_debug directory can be tweaked at run time. See http://sg.danny.cz/sg/sdebug26.html for more information. Mainly used for testing and best as a module. If unsure, say N.

SCSI debugging host simulator found in drivers/scsi/Kconfig

The configuration item CONFIG_SCSI_DEBUG:

Help text

This is a host adapter simulator that can simulate multiple hosts each with multiple dummy SCSI devices (disks). It defaults to one host adapter with one dummy SCSI disk. Each dummy disk uses kernel RAM as storage (i.e. it is a ramdisk). To save space when multiple dummy disks are simulated, they share the same kernel RAM for their storage. See http://sg.danny.cz/sg/sdebug26.html for more information. This driver is primarily of use to those testing the SCSI and block subsystems. If unsure, say N.

SCSI debugging host simulator (EXPERIMENTAL) found in arch/um/Kconfig.scsi

The configuration item CONFIG_SCSI_DEBUG:

Help text

(none)

SCSI debugging host simulator (EXPERIMENTAL) found in arch/um/Kconfig_scsi

The configuration item CONFIG_SCSI_DEBUG:

Help text

(none)

SCSI debugging host simulator (EXPERIMENTAL) found in drivers/scsi/Kconfig

The configuration item CONFIG_SCSI_DEBUG:

Help text

This is a host adapter simulator that can be programmed to simulate a large number of conditions that could occur on a real bus. The advantage is that many hard to reproduce problems can be tested in a controlled environment where there is reduced risk of losing important data. This is primarily of use to people trying to debug the middle and upper layers of the SCSI subsystem. If unsure, say N.

Hardware

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