.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.ie \nF \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    nr % 0
.    rr F
.\}
.el \{\
.    de IX
..
.\}
.\" ========================================================================
.\"
.IX Title "virt-df 1"
.TH virt-df 1 "2012-06-01" "libguestfs-1.18.1" "Virtualization Support"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "名前"
.IX Header "名前"
virt-df \- 仮想ファイルシステムの使用状況の表示
.SH "書式"
.IX Header "書式"
.Vb 1
\& virt\-df [\-\-options]
\&
\& virt\-df [\-\-options] \-d domname
\&
\& virt\-df [\-\-options] \-a disk.img [\-a disk.img ...]
.Ve
.PP
古い形式:
.PP
.Vb 1
\& virt\-df [\-\-options] domname
\&
\& virt\-df [\-\-options] disk.img [disk.img ...]
.Ve
.SH "説明"
.IX Header "説明"
\&\f(CW\*(C`virt\-df\*(C'\fR is a command line tool to display free space on virtual machine
filesystems.  Unlike other tools, it doesn't just display the size of disk
allocated to a virtual machine, but can look inside disk images to see how
much space is really being used.
.PP
If used without any \fI\-a\fR or \fI\-d\fR arguments, \f(CW\*(C`virt\-df\*(C'\fR checks with libvirt
to get a list of all active and inactive guests, and performs a \f(CW\*(C`df\*(C'\fR\-type
operation on each one in turn, printing out the results.
.PP
If any \fI\-a\fR or \fI\-d\fR arguments are specified, \f(CW\*(C`virt\-df\*(C'\fR performs a
\&\f(CW\*(C`df\*(C'\fR\-type operation on either the single named libvirt domain, or on the
disk image(s) listed on the command line (which must all belong to a single
\&\s-1VM\s0).  In this mode (with arguments), \f(CW\*(C`virt\-df\*(C'\fR will \fIonly work for a
single guest\fR.  If you want to run on multiple guests, then you have to
invoke \f(CW\*(C`virt\-df\*(C'\fR multiple times.
.PP
Use the \fI\-\-csv\fR option to get a format which can be easily parsed by other
programs.  Other options are similar to the standard \fIdf\fR\|(1) command.
.SH "例"
.IX Header "例"
Show disk usage for a single libvirt guest called \f(CW\*(C`F14x64\*(C'\fR.  Make the
output human-readable:
.PP
.Vb 4
\& # virt\-df \-d F14x64 \-h
\& Filesystem                       Size     Used  Available  Use%
\& F14x64:/dev/sda1                 484M      66M       393M   14%
\& F14x64:/dev/vg_f13x64/lv_root    7.4G     3.4G       4.0G   46%
.Ve
.PP
\&\f(CW\*(C`test.img\*(C'\fR というディスクイメージファイルのディスク使用量を表示します:
.PP
.Vb 3
\& $ virt\-df \-a test1.img
\& Filesystem                  1K\-blocks     Used  Available  Use%
\& test1.img:/dev/sda1             99099     1551      92432    2%
.Ve
.SH "オプション"
.IX Header "オプション"
.IP "\fB\-\-help\fR" 4
.IX Item "--help"
簡単なヘルプを表示します。
.IP "\fB\-a\fR file" 4
.IX Item "-a file"
.PD 0
.IP "\fB\-\-add\fR file" 4
.IX Item "--add file"
.PD
Add \fIfile\fR which should be a disk image from a virtual machine.  If the
virtual machine has multiple block devices, you must supply all of them with
separate \fI\-a\fR options.
.Sp
ディスクイメージの形式は自動検知されます。これを上書きして強制的に特定の形式を使用するには、\fI\-\-format=..\fR オプションを使用します。
.IP "\fB\-c\fR \s-1URI\s0" 4
.IX Item "-c URI"
.PD 0
.IP "\fB\-\-connect\fR \s-1URI\s0" 4
.IX Item "--connect URI"
.PD
libvirt を使用していると、指定された \fI\s-1URI\s0\fR に接続します。  省略すると、デフォルトの libvirt ハイパーバイザーに接続します。
.Sp
ゲストのブロックデバイスを直接指定していると（(\fI\-a\fR)）、libvirt は何も使用されません。
.IP "\fB\-\-csv\fR" 4
.IX Item "--csv"
Write out the results in \s-1CSV\s0 format (comma-separated values).  This format
can be imported easily into databases and spreadsheets, but read \*(L"\s-1NOTE\s0
\&\s-1ABOUT\s0 \s-1CSV\s0 \s-1FORMAT\s0\*(R" below.
.IP "\fB\-d\fR guest" 4
.IX Item "-d guest"
.PD 0
.IP "\fB\-\-domain\fR guest" 4
.IX Item "--domain guest"
.PD
名前付きの libvirt 仮想マシンからすべてのディスクを追加します。  ドメインの \s-1UUID\s0 が名前の代わりに使用されます。
.IP "\fB\-\-format=raw|qcow2|..\fR" 4
.IX Item "--format=raw|qcow2|.."
.PD 0
.IP "\fB\-\-format\fR" 4
.IX Item "--format"
.PD
\&\fI\-a\fR オプションのデフォルトはディスクイメージの形式を自動検知します。これを使用することにより、\fI\-a\fR
オプションのディスク形式をコマンドラインにおいて指定したものに強制できます。引数なしで \fI\-\-format\fR を使用することにより、後続の \fI\-a\fR
オプションに対して自動検知に戻せます。
.Sp
例:
.Sp
.Vb 1
\& virt\-df \-\-format=raw \-a disk.img
.Ve
.Sp
\&\f(CW\*(C`disk.img\*(C'\fR に対してローイメージを強制します（自動検出しません）。
.Sp
.Vb 1
\& virt\-df \-\-format=raw \-a disk.img \-\-format \-a another.img
.Ve
.Sp
\&\f(CW\*(C`disk.img\*(C'\fR に対してロー形式（自動検知なし）を強制し、\f(CW\*(C`another.img\*(C'\fR に対して自動検知に戻します。
.Sp
仮想マシンのディスクイメージが信頼できないロー形式であるならば、ディスク形式を指定するためにこのオプションを使用すべきです。これにより、悪意のある仮想マシンにより起こり得るセキュリティ問題を回避できます
(\s-1CVE\-2010\-3851\s0)。
.IP "\fB\-h\fR" 4
.IX Item "-h"
.PD 0
.IP "\fB\-\-human\-readable\fR" 4
.IX Item "--human-readable"
.PD
読みやすい形式で容量を表示します。
.Sp
\&\fI\-h\fR と \fI\-\-csv\fR を同時に使用することはできません。
.IP "\fB\-i\fR" 4
.IX Item "-i"
.PD 0
.IP "\fB\-\-inodes\fR" 4
.IX Item "--inodes"
.PD
ブロックの代わりに inode を表示します。
.IP "\fB\-\-one\-per\-guest\fR" 4
.IX Item "--one-per-guest"
Run one libguestfs appliance per guest.  Normally \f(CW\*(C`virt\-df\*(C'\fR will add the
disks from several guests to a single libguestfs appliance.
.Sp
You might use this option in the following circumstances:
.RS 4
.IP "\(bu" 4
If you think an untrusted guest might actively try to exploit the libguestfs
appliance kernel, then this prevents one guest from interfering with the
stats printed for another guest.
.IP "\(bu" 4
If the kernel has a bug which stops it from accessing a filesystem in one
guest (see for example RHBZ#635373) then this allows libguestfs to continue
and report stats for further guests.
.RE
.RS 4
.RE
.IP "\fB\-\-uuid\fR" 4
.IX Item "--uuid"
Print UUIDs instead of names.  This is useful for following a guest even
when the guest is migrated or renamed, or when two guests happen to have the
same name.
.Sp
Note that only domains that we fetch from libvirt come with UUIDs.  For disk
images, we still print the disk image name even when this option is
specified.
.IP "\fB\-v\fR" 4
.IX Item "-v"
.PD 0
.IP "\fB\-\-verbose\fR" 4
.IX Item "--verbose"
.PD
デバッグ用の冗長なメッセージを有効にします。
.IP "\fB\-V\fR" 4
.IX Item "-V"
.PD 0
.IP "\fB\-\-version\fR" 4
.IX Item "--version"
.PD
バージョン番号を表示して終了します。
.IP "\fB\-x\fR" 4
.IX Item "-x"
libguestfs \s-1API\s0 呼び出しのトレースを有効にします。
.SH "STATVFS NUMBERS"
.IX Header "STATVFS NUMBERS"
\&\f(CW\*(C`virt\-df\*(C'\fR (and \fIdf\fR\|(1)) get information by issuing a \fIstatvfs\fR\|(3) system
call.  You can get the same information directly, either from the host
(using libguestfs) or inside the guest:
.IP "ホストから" 4
.IX Item "ホストから"
このコマンドを実行してください:
.Sp
.Vb 1
\& guestfish \-\-ro \-d GuestName \-i statvfs /
.Ve
.Sp
(change \f(CW\*(C`/\*(C'\fR to see stats for other filesystems).
.IP "仮想マシンの中から" 4
.IX Item "仮想マシンの中から"
このコマンドを実行してください:
.Sp
.Vb 1
\& python \-c \*(Aqimport os; s = os.statvfs ("/"); print s\*(Aq
.Ve
.Sp
(change \f(CW\*(C`/\*(C'\fR to see stats for other filesystems).
.SH "CSV 形式に関する注意"
.IX Header "CSV 形式に関する注意"
Comma-separated values (\s-1CSV\s0) is a deceptive format.  It \fIseems\fR like it
should be easy to parse, but it is definitely not easy to parse.
.PP
Myth: Just split fields at commas.  Reality: This does \fInot\fR work
reliably.  This example has two columns:
.PP
.Vb 1
\& "foo,bar",baz
.Ve
.PP
Myth: Read the file one line at a time.  Reality: This does \fInot\fR work
reliably.  This example has one row:
.PP
.Vb 2
\& "foo
\& bar",baz
.Ve
.PP
For shell scripts, use \f(CW\*(C`csvtool\*(C'\fR (<http://merjis.com/developers/csv> also
packaged in major Linux distributions).
.PP
For other languages, use a \s-1CSV\s0 processing library (eg. \f(CW\*(C`Text::CSV\*(C'\fR for Perl
or Python's built-in csv library).
.PP
Most spreadsheets and databases can import \s-1CSV\s0 directly.
.SH "SHELL QUOTING"
.IX Header "SHELL QUOTING"
Libvirt guest names can contain arbitrary characters, some of which have
meaning to the shell such as \f(CW\*(C`#\*(C'\fR and space.  You may need to quote or
escape these characters on the command line.  See the shell manual page
\&\fIsh\fR\|(1) for details.
.SH "終了ステータス"
.IX Header "終了ステータス"
このプログラムは、成功すると 0 を、エラーがあると 0 以外を返します。
.SH "関連項目"
.IX Header "関連項目"
\&\fIdf\fR\|(1), \fIguestfs\fR\|(3), \fIguestfish\fR\|(1), \fIvirt\-filesystems\fR\|(1),
<http://libguestfs.org/>.
.SH "著者"
.IX Header "著者"
Richard W.M. Jones <http://people.redhat.com/~rjones/>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (C) 2009\-2012 Red Hat Inc.
.PP
This program is free software; you can redistribute it and/or modify it
under the terms of the \s-1GNU\s0 General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.
.PP
This program is distributed in the hope that it will be useful, but \s-1WITHOUT\s0
\&\s-1ANY\s0 \s-1WARRANTY\s0; without even the implied warranty of \s-1MERCHANTABILITY\s0 or
\&\s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0.  See the \s-1GNU\s0 General Public License for
more details.
.PP
You should have received a copy of the \s-1GNU\s0 General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, \s-1MA\s0 02110\-1301 \s-1USA\s0.