The sg_wr_mode command is a Linux utility used to query and set the write mode of a given SCSI device. This command can be used to set the device's write mode to either write-through or write-back mode.
Basic Usage and SyntaxThe syntax for the sg_wr_mode command is as follows: sg_wr_mode [-h] [-v] [-V] [-m mode] [-p page] [-c] DEVICE. The -h flag displays a help message, the -v flag displays verbose output, the -V flag displays the version number, the -m flag sets the write mode, the -p flag sets the page, and the -c flag displays the current write mode.
The most common use for the sg_wr_mode command is to query the current write mode of a device. This can be done by running the command with the -c flag followed by the device name. For example, sg_wr_mode -c /dev/sda will display the current write mode of the device /dev/sda.
The sg_wr_mode command has several advanced options and flags that can be used to customize the command's output. These include the -m flag which sets the write mode, the -p flag which sets the page, and the -v flag which displays verbose output.
The sg_wr_mode command can be used in real-world scenarios to change the write mode of a device. For example, if you wanted to set the device /dev/sda to write-through mode, you could use the command sg_wr_mode -m write-through /dev/sda.
When using the sg_wr_mode command, it is important to ensure that you have the correct permissions to access the device. If you do not have the correct permissions, you may encounter an error when attempting to query or set the write mode. Additionally, it is important to ensure that the write mode is set to the correct value for the device.
The sg_wr_mode command is a Linux utility used to query and set the write mode of a given SCSI device. This command can be used to set the device's write mode to either write-through or write-back mode.
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