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CONFIG_SCSI_LOGGING: SCSI logging facility

General informations

The Linux kernel configuration item CONFIG_SCSI_LOGGING has multiple definitions:

SCSI logging facility found in arch/um/Kconfig.scsi

The configuration item CONFIG_SCSI_LOGGING:

Help text

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SCSI logging facility found in arch/um/Kconfig_scsi

The configuration item CONFIG_SCSI_LOGGING:

Help text

(none)

SCSI logging facility found in drivers/scsi/Kconfig

The configuration item CONFIG_SCSI_LOGGING:

Help text

This turns on a logging facility that can be used to debug a number of SCSI related problems.

If you say Y here, no logging output will appear by default, but you can enable logging by saying Y to "/proc file system support" and "Sysctl support" below and executing the command

echo <bitmask> > /proc/sys/dev/scsi/logging_level

where <bitmask> is a four byte value representing the logging type and logging level for each type of logging selected.

There are a number of logging types and you can find them in the source at drivers/scsi/scsi_logging.h. The logging levels are also described in that file and they determine the verbosity of the logging for each logging type.

If you say N here, it may be harder to track down some types of SCSI problems. If you say Y here your kernel will be somewhat larger, but there should be no noticeable performance impact as long as you have logging turned off.

Hardware

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