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btrfs-progs: doc: update manual page of btrfs subvolume
Some information is obsolete and updated as follows: - add missing explanations of some options - remove outdated explanation of "subvolrootid" mount option - reorder/group options of "subvolume list" so it matches the help message - add explanation of different meanings of parent in "parent ID/UUID" - fix indentation/spelling - add missing comma Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -77,13 +77,16 @@ safely stored on the device.
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`Options`
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+
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-c|--commit-after::::
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wait for transaction commit at the end of the operation
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wait for transaction commit at the end of the operation.
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+
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-C|--commit-each::::
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wait for transaction commit after deleting each subvolume
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wait for transaction commit after deleting each subvolume.
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-v|--verbose::::
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verbose output of operations.
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*find-new* <subvolume> <last_gen>::
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List the recently modified files in a subvolume, after <last_gen> ID.
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List the recently modified files in a subvolume, after <last_gen> generation.
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*get-default* <path>::
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Get the default subvolume of the filesystem <path>.
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@ -93,40 +96,54 @@ The output format is similar to *subvolume list* command.
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*list* [options] [-G [\+|-]<value>] [-C [+|-]<value>] [--sort=rootid,gen,ogen,path] <path>::
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List the subvolumes present in the filesystem <path>.
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For every subvolume the following information is shown by default. +
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ID <ID> top level <ID> path <path> +
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where path is the relative path of the subvolume to the top level subvolume.
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For every subvolume the following information is shown by default:
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ID <ID> gen <generation> top level <ID> path <path>
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where ID is subvolume's id, gen is an internal counter which is updated
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every transaction, top level is the same as parent subvolume's id, and
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path is the relative path of the subvolume to the top level subvolume.
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The subvolume's ID may be used by the subvolume set-default command,
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or at mount time via the subvolid= option.
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If `-p` is given, then parent <ID> is added to the output between ID
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and top level. The parent's ID may be used at mount time via the
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`subvolrootid=` option.
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`Options`
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-p::::
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print parent ID.
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Path filtering;;
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-o::::
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print only subvolumes below specified <path>.
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-a::::
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print all the subvolumes in the filesystem and distinguish between
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absolute and relative path with respect to the given <path>.
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Field selection;;
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-p::::
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print the parent ID
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('parent' here means the subvolume which contains this subvolume).
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-c::::
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print the ogeneration of the subvolume, aliases: ogen or origin generation.
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-g::::
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print the generation of the subvolume.
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-o::::
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print only subvolumes below specified <path>.
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print the generation of the subvolume (default).
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-u::::
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print the UUID of the subvolume.
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-q::::
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print the parent uuid of subvolumes (and snapshots).
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print the parent UUID of the subvolume
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('parent' here means subvolume of which this subvolume is a snapshot).
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-R::::
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print the UUID of the sent subvolume, where the subvolume is the result of a receive operation
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-t::::
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print the result as a table.
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print the UUID of the sent subvolume, where the subvolume is the result of a receive operation.
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Type filtering;;
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-s::::
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only snapshot subvolumes in the filesystem will be listed.
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-r::::
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only readonly subvolumes in the filesystem will be listed.
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-d::::
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list deleted subvolumes that are not yet cleaned.
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Other;;
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-t::::
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print the result as a table.
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Sorting;;
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-G [+|-]<value>::::
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list subvolumes in the filesystem that its generation is
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>=, \<= or = value. \'\+' means >= value, \'-' means \<= value, If there is
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@ -144,9 +161,9 @@ for --sort you can combine some items together by \',', just like
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*set-default* [<subvolume>|<id> <path>]::
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Set the default subvolume for the (mounted) filesystem.
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Set the default subvolume for the (mounted) filesystem at <path>. This will hide
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the top-level subvolume (ie. the one mounted with 'subvol=/' or 'subvolid=5').
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the top-level subvolume (i.e. the one mounted with 'subvol=/' or 'subvolid=5').
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Takes action on next mount.
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+
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There are two ways how to specify the subvolume, by <id> or by the <subvolume>
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@ -154,10 +171,22 @@ path.
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The id can be obtained from *btrfs subvolume list*, *btrfs subvolume show* or
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*btrfs inspect-internal rootid*.
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*show* <path>::
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*show* [options] <path>|<mnt>::
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Show information of a given subvolume in the <path>.
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+
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`Options`
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-r|--rootid::::
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rootid of the subvolume.
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-u|--uuid:::
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UUID of the subvolume.
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*snapshot* [-r] <source> <dest>|[<dest>/]<name>::
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+
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If no option is specified, subvolume information of <path> is shown,
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otherwise the subvolume information of rootid or UUID in the filesystem
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is shown.
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*snapshot* [-r|-i <qgroupid>] <source> <dest>|[<dest>/]<name>::
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Create a snapshot of the subvolume <source> with the
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name <name> in the <dest> directory.
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@ -168,6 +197,10 @@ If <source> is not a subvolume, btrfs returns an error.
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-r::::
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Make the new snapshot read only.
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-i <qgroupid>::::
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Add the newly created subvolume to a qgroup. This option can be given multiple
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times.
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*sync* <path> [subvolid...]::
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Wait until given subvolume(s) are completely removed from the filesystem after
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