NAME

       btrfs-inspect-internal - query various internal information

SYNOPSIS

       btrfs inspect-internal <subcommand> <args>

DESCRIPTION

       This command group provides an interface to query internal information. The functionality
       ranges from a simple UI to an ioctl or a more complex query that assembles the result from
       several internal structures. The latter usually requires calls to privileged ioctls.

SUBCOMMAND

       inode-resolve [-v] <ino> <path>
           (needs root privileges)

           resolve paths to all files with given inode number ino in a given subvolume at path,
           ie. all hardlinks

           Options

           -v
               verbose mode, print count of returned paths and ioctl() return value

       logical-resolve [-Pv] [-s <bufsize>] <logical> <path>
           (needs root privileges)

           resolve paths to all files at given logical address in the linear filesystem space

           Options

           -P
               skip the path resolving and print the inodes instead

           -v
               verbose mode, print count of returned paths and all ioctl() return values

           -s <bufsize>
               set internal buffer for storing the file names to bufsize, default is 4096,
               maximum 64k

       min-dev-size [options] <path>
           (needs root privileges)

           return the minimum size the device can be shrunk to, without performing any resize
           operation, this may be useful before executing the actual resize operation

           Options

           --id <id>
               specify the device id to query, default is 1 if this option is not used

       rootid <path>
           for a given file or directory, return the containing tree root id, for a subvolume
           itself return it’s own tree id (ie. subvol id)

               Note
               The result is undefined for the so-called empty subvolumes (identified by inode
               number 2), but such subvolume does not contain any files anyway

       subvolid-resolve <subvolid> <path>
           (needs root privileges)

           resolve the absolute path of a the subvolume id subvolid

EXIT STATUS

       btrfs inspect-internal returns a zero exit status if it succeeds. Non zero is returned in
       case of failure.

AVAILABILITY

       btrfs is part of btrfs-progs. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org
       for further details.

SEE ALSO

       mkfs.btrfs(8), btrfs-debug-tree(8)