Introduction to the 'scsi_logging_level' Command

Introduction to the scsi_logging_level Linux Command

The scsi_logging_level command is a Linux utility that allows users to control the logging level of SCSI devices. It is used to set the amount of information that is logged for each SCSI device and can be used to adjust the logging level for debugging or troubleshooting purposes. The command can be used to set the logging level for a single device or for all devices.

Basic Usage and Syntax

The syntax for the scsi_logging_level command is:

scsi_logging_level [options] [device] [level]

Where [options] is any of the command's options, [device] is the name of the SCSI device, and [level] is the logging level to set for the device.

Examples of Common Use Cases

• Set the logging level for a single device:

  scsi_logging_level -d /dev/sda1 3

• Set the logging level for all devices:

  scsi_logging_level -a 4

• View the current logging level for a device:

  scsi_logging_level -v /dev/sdb1

Advanced Options and Flags

• -d, --device: Specifies the device to set the logging level for.
• -a, --all: Sets the logging level for all devices.
• -v, --verbose: Displays the current logging level for a device.
• -h, --help: Displays help information.

Examples in Real-World Scenarios

• A system administrator needs to increase the logging level of a SCSI device to debug an issue:

  scsi_logging_level -d /dev/sda1 5

• A system administrator needs to view the current logging level of a SCSI device:

  scsi_logging_level -v /dev/sdb1

• A system administrator needs to set the logging level of all SCSI devices to the same level:

  scsi_logging_level -a 4

Troubleshooting Tips and Potential Errors

• Ensure that the device name is specified correctly.
• Ensure that the logging level is within the valid range (0-7).
• If the command is not working, try running it as root.
• If the command is still not working, try rebooting the system.