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diff --git a/Documentation/btrfs-inspect-internal.asciidoc b/Documentation/btrfs-inspect-internal.asciidoc new file mode 100644 index 00000000..1c7c3611 --- /dev/null +++ b/Documentation/btrfs-inspect-internal.asciidoc @@ -0,0 +1,84 @@ +btrfs-inspect-internal(8) +========================= + +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) |