btrfs-inspect-internal(8) Manual Page
btrfs-inspect-internal - query various internal information
btrfs inspect-internal <subcommand> <args>
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.
- 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
- 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
- skip the path resolving and print the inodes instead
- 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
- --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
btrfs inspect-internal returns a zero exit status if it succeeds. Non zero is returned in case of failure.
btrfs is part of btrfs-progs. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details.