114572d558
- remove debugging printf from 0001-Btrfs-progs-add-a-btrfs-select-super-command-to-over.patch (forwarded request 76766 from dsterba) OBS-URL: https://build.opensuse.org/request/show/76976 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/btrfsprogs?expand=0&rev=22
99 lines
3.1 KiB
Diff
99 lines
3.1 KiB
Diff
From 0a63a11c3d3bbb7e061daad28435b5eef91a947d Mon Sep 17 00:00:00 2001
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From: Hubert Kario <kario@wit.edu.pl>
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Date: Sun, 23 Jan 2011 15:31:07 +0000
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Subject: [PATCH 04/15] update man page to new defragment command interface
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Update
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btrfs filesystem defragment
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command explanation. Add explanation of advanced parameters and notes
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about general usage.
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Add few notes about the
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btrfs <command> --help
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usage, fix related grammar.
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Signed-off-by: Hubert Kario <kario@wit.edu.pl>
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
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---
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man/btrfs.8.in | 33 ++++++++++++++++++++++++++-------
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1 files changed, 26 insertions(+), 7 deletions(-)
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diff --git a/man/btrfs.8.in b/man/btrfs.8.in
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index 26ef982..cba2de1 100644
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--- a/man/btrfs.8.in
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+++ b/man/btrfs.8.in
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@@ -15,7 +15,7 @@ btrfs \- control a btrfs filesystem
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.PP
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\fBbtrfs\fP \fBsubvolume set-default\fP\fI <id> <path>\fP
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.PP
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-\fBbtrfs\fP \fBfilesystem defrag\fP\fI <file>|<dir> [<file>|<dir>...]\fP
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+\fBbtrfs\fP \fBfilesystem defragment\fP\fI [-vcf] [-s start] [-l len] [-t size] <file>|<dir> [<file>|<dir>...]\fP
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.PP
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\fBbtrfs\fP \fBfilesystem sync\fP\fI <path> \fP
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.PP
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@@ -34,6 +34,8 @@ btrfs \- control a btrfs filesystem
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.PP
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\fBbtrfs\fP \fBhelp|\-\-help|\-h \fP\fI\fP
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.PP
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+\fBbtrfs\fP \fB<command> \-\-help \fP\fI\fP
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+.PP
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.SH DESCRIPTION
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.B btrfs
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is used to control the filesystem and the files and directories stored. It is
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@@ -60,12 +62,12 @@ returns an error.
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If a command is terminated by
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.I --help
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-, the relevant help is showed. If the passed command matches more commands,
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-the help of all the matched commands are showed. For example
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+, the detailed help is showed. If the passed command matches more commands,
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+detailed help of all the matched commands is showed. For example
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.I btrfs dev --help
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shows the help of all
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.I device*
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-command.
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+commands.
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.SH COMMANDS
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.TP
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@@ -98,12 +100,29 @@ mount time via the \fIsubvol=\fR option.
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\fBsubvolume set-default\fR\fI <id> <path>\fR
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Set the subvolume of the filesystem \fI<path>\fR which is mounted as
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-\fIdefault\fR. The subvolume is identified by \fB<id>\fR, which
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+\fIdefault\fR. The subvolume is identified by \fI<id>\fR, which
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is returned by the \fBsubvolume list\fR command.
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.TP
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-\fBfilesystem defragment\fP\fI <file>|<dir> [<file>|<dir>...]\fR
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-Defragment files and/or directories.
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+\fBfilesystem defragment\fP\fI [-vcf] [-s start] [-l len] [-t size] <file>|<dir> [<file>|<dir>...]\fR
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+Defragment file data and/or directory metadata. To defragment all files in a
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+directory you have to specify each one on its own or use your shell wildcards.
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+
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+\fB-v\fP be verbose
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+
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+\fB-c\fP compress file contents while defragmenting
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+
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+\fB-f\fP flush filesystem after defragmenting
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+
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+\fB-s start\fP defragment only from byte \fIstart\fR onward
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+
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+\fB-l len\fP defragment only up to \fIlen\fR bytes
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+
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+\fB-t size\fP defragment only files at least \fIsize\fR bytes big
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+
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+NOTE: defragmenting with kernels up to 2.6.37 will unlink COW-ed copies of data, don't
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+use it if you use snapshots, have de-duplicated your data or made copies with
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+\fBcp --reflink\fP.
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.TP
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\fBdevice scan\fR \fI[<device> [<device>..]]\fR
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--
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1.7.5.2.353.g5df3e
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