btrfs-inspect-internal

Debug and inspect btrfs filesystem internals

TLDR

Print superblock information

$ sudo btrfs inspect-internal dump-super [path/to/partition]

Print all superblock copies

$ sudo btrfs inspect-internal dump-super -a [path/to/partition]

Print filesystem metadata information

$ sudo btrfs inspect-internal dump-tree [path/to/partition]

Print list of files in inode number

$ sudo btrfs inspect-internal inode-resolve [inode_number] [path/to/btrfs_mount]

Print list of files at a logical address

$ sudo btrfs inspect-internal logical-resolve [logical_address] [path/to/btrfs_mount]

Print tree stats for a filesystem

$ sudo btrfs inspect-internal tree-stats [path/to/partition]

Calculate minimum device size for shrinking

$ sudo btrfs inspect-internal min-dev-size [path/to/btrfs_mount]

SYNOPSIS

btrfs inspect-internal subcommand [options] device|path

btrfs inspect-internal provides low-level access to btrfs filesystem internal structures. It is primarily used for debugging, forensics, and advanced troubleshooting.The command can dump superblock data, metadata trees, and resolve inodes to file paths or logical addresses to physical locations.

PARAMETERS

-a, --all

Dump all superblock copies

-f

Force output even with warnings

SUBCOMMANDS

dump-super

Print superblock information

dump-tree

Print metadata tree structure

inode-resolve

Find file paths from inode number

logical-resolve

Find files at logical address

tree-stats

Print tree statistics

min-dev-size

Calculate minimum device size for shrinking

CAVEATS

Output is technical and intended for developers or advanced users. Some commands require unmounted filesystem while others need mounted. Incorrect use won't damage data but output interpretation requires btrfs internals knowledge.