btrfs-check:tldr:f85ca

btrfs-check: Verify the checksum of each data block (if the filesystem is good).

btrfs

$ sudo btrfs check --check-data-csum ${path-to-partition}

try on your machine

The given command is used to check the integrity of data stored in a Btrfs file system. Here is the breakdown:

sudo: This is a command in Linux that allows users to execute commands with administrative or root privileges. It is used here to ensure that the following command is run with the necessary permissions.
btrfs: This is the command used to interact with Btrfs file systems in Linux.
check: This is a subcommand of btrfs and is used to perform various checks on the Btrfs file system.
--check-data-csum: This option instructs the btrfs check command to verify the checksums of the data blocks stored on the Btrfs file system. It ensures that the data integrity has not been compromised.
${path-to-partition}: This is a placeholder for the actual path to the Btrfs partition or device that you want to check. You need to replace ${path-to-partition} with the correct path, such as /dev/sdb1 or /mnt/btrfs.

When you run this command with the correct path, it will initiate a check on the specified Btrfs partition, looking for any data block checksum errors. If any errors are found, the command will display information about them.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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