1virt-filesystems(1)         Virtualization Support         virt-filesystems(1)
2
3
4

NAME

6       virt-filesystems - List filesystems, partitions, block devices, LVM in
7       a virtual machine or disk image
8

SYNOPSIS

10        virt-filesystems [--options] -d domname
11
12        virt-filesystems [--options] -a disk.img [-a disk.img ...]
13

DESCRIPTION

15       This tool allows you to discover filesystems, partitions, logical
16       volumes, and their sizes in a disk image or virtual machine.  It is a
17       replacement for virt-list-filesystems(1) and virt-list-partitions(1).
18
19       One use for this tool is from shell scripts to iterate over all
20       filesystems from a disk image:
21
22        for fs in $(virt-filesystems -a disk.img); do
23          # ...
24        done
25
26       Another use is to list partitions before using another tool to modify
27       those partitions (such as virt-resize(1)).  If you are curious about
28       what an unknown disk image contains, use this tool along with
29       virt-inspector(1).
30
31       Various command line options control what this program displays.  You
32       need to give either -a or -d options to specify the disk image or
33       libvirt guest respectively.  If you just specify that then the program
34       shows filesystems found, one per line, like this:
35
36        $ virt-filesystems -a disk.img
37        /dev/sda1
38        /dev/vg_guest/lv_root
39
40       If you add -l or --long then the output includes extra information:
41
42        $ virt-filesystems -a disk.img -l
43        Name                   Type         VFS   Label  Size
44        /dev/sda1              filesystem   ext4  boot   524288000
45        /dev/vg_guest/lv_root  filesystem   ext4  root   10212081664
46
47       If you add --extra then non-mountable (swap, unknown) filesystems are
48       shown as well:
49
50        $ virt-filesystems -a disk.img --extra
51        /dev/sda1
52        /dev/vg_guest/lv_root
53        /dev/vg_guest/lv_swap
54        /dev/vg_guest/lv_data
55
56       If you add --partitions then partitions are shown instead of
57       filesystems:
58
59        $ virt-filesystems -a disk.img --partitions
60        /dev/sda1
61        /dev/sda2
62
63       Similarly you can use --logical-volumes, --volume-groups,
64       --physical-volumes, --block-devices to list those items.
65
66       You can use these options in combination as well (if you want a
67       combination including filesystems, you have to add --filesystems).
68       Notice that some items fall into several categories (eg. /dev/sda1
69       might be both a partition and a filesystem).  These items are listed
70       several times.  To get a list which includes absolutely everything that
71       virt-filesystems knows about, use the --all option.
72
73       UUIDs (because they are quite long) are not shown by default.  Add the
74       --uuid option to display device and filesystem UUIDs in the long
75       output.
76
77       --all --long --uuid is a useful combination to display all possible
78       information about everything.
79
80        $ virt-filesystems -a win.img --all --long --uuid -h
81        Name      Type       VFS  Label           Size Parent   UUID
82        /dev/sda1 filesystem ntfs System Reserved 100M -        F81C92571C92112C
83        /dev/sda2 filesystem ntfs -               20G  -        F2E8996AE8992E3B
84        /dev/sda1 partition  -    -               100M /dev/sda -
85        /dev/sda2 partition  -    -               20G  /dev/sda -
86        /dev/sda  device     -    -               20G  -        -
87
88       For machine-readable output, use --csv to get Comma-Separated Values.
89

OPTIONS

91       --help
92           Display brief help.
93
94       -a file
95       --add file
96           Add file which should be a disk image from a virtual machine.  If
97           the virtual machine has multiple block devices, you must supply all
98           of them with separate -a options.
99
100           The format of the disk image is auto-detected.  To override this
101           and force a particular format use the --format=.. option.
102
103       -a URI
104       --add URI
105           Add a remote disk.  See "ADDING REMOTE STORAGE" in guestfish(1).
106
107       --all
108           Display everything.  This is currently the same as specifying these
109           options: --filesystems, --extra, --partitions, --block-devices,
110           --logical-volumes, --volume-groups, --physical-volumes.  (More may
111           be added to this list in future).
112
113           See also --long.
114
115       --blkdevs
116       --block-devices
117           Display block devices.
118
119       --blocksize=512
120       --blocksize=4096
121       --blocksize
122           This parameter sets the sector size of the disk image.  It affects
123           all explicitly added subsequent disks after this parameter.  Using
124           --blocksize with no argument switches the disk sector size to the
125           default value which is usually 512 bytes.  See also
126           "guestfs_add_drive_opts" in guestfs(3).
127
128       -c URI
129       --connect URI
130           If using libvirt, connect to the given URI.  If omitted, then we
131           connect to the default libvirt hypervisor.
132
133           If you specify guest block devices directly (-a), then libvirt is
134           not used at all.
135
136       --csv
137           Write out the results in CSV format (comma-separated values).  This
138           format can be imported easily into databases and spreadsheets, but
139           read "NOTE ABOUT CSV FORMAT" below.
140
141       -d guest
142       --domain guest
143           Add all the disks from the named libvirt guest.  Domain UUIDs can
144           be used instead of names.
145
146       --echo-keys
147           When prompting for keys and passphrases, virt-filesystems normally
148           turns echoing off so you cannot see what you are typing.  If you
149           are not worried about Tempest attacks and there is no one else in
150           the room you can specify this flag to see what you are typing.
151
152       --extra
153           This causes filesystems that are not ordinary, mountable
154           filesystems to be displayed.  This category includes swapspace, and
155           filesystems that are empty or contain unknown data.
156
157           This option implies --filesystems.
158
159       --filesystems
160           Display mountable filesystems.  If no display option was selected
161           then this option is implied.
162
163           With --extra, non-mountable filesystems are shown too.
164
165       --format=raw|qcow2|..
166       --format
167           The default for the -a option is to auto-detect the format of the
168           disk image.  Using this forces the disk format for -a options which
169           follow on the command line.  Using --format with no argument
170           switches back to auto-detection for subsequent -a options.
171
172           For example:
173
174            virt-filesystems --format=raw -a disk.img
175
176           forces raw format (no auto-detection) for disk.img.
177
178            virt-filesystems --format=raw -a disk.img --format -a another.img
179
180           forces raw format (no auto-detection) for disk.img and reverts to
181           auto-detection for another.img.
182
183           If you have untrusted raw-format guest disk images, you should use
184           this option to specify the disk format.  This avoids a possible
185           security problem with malicious guests (CVE-2010-3851).
186
187       -h
188       --human-readable
189           In --long mode, display sizes in human-readable format.
190
191       --keys-from-stdin
192           Read key or passphrase parameters from stdin.  The default is to
193           try to read passphrases from the user by opening /dev/tty.
194
195           If there are multiple encrypted devices then you may need to supply
196           multiple keys on stdin, one per line.
197
198       -l
199       --long
200           Display extra columns of data ("long format").
201
202           A title row is added unless you also specify --no-title.
203
204           The extra columns displayed depend on what output you select, and
205           the ordering of columns may change in future versions.  Use the
206           title row, --csv output and/or csvtool(1) to match columns to data
207           in external programs.
208
209           Use -h if you want sizes to be displayed in human-readable format.
210           The default is to show raw numbers of bytes.
211
212           Use --uuid to display UUIDs too.
213
214       --lvs
215       --logvols
216       --logical-volumes
217           Display LVM logical volumes.  In this mode, these are displayed
218           irrespective of whether the LVs contain filesystems.
219
220       --no-title
221           In --long mode, don’t add a title row.
222
223           Note that the order of the columns is not fixed, and may change in
224           future versions of virt-filesystems, so using this option may give
225           you unexpected surprises.
226
227       --parts
228       --partitions
229           Display partitions.  In this mode, these are displayed irrespective
230           of whether the partitions contain filesystems.
231
232       --pvs
233       --physvols
234       --physical-volumes
235           Display LVM physical volumes.
236
237       --uuid
238       --uuids
239           In --long mode, display UUIDs as well.
240
241       -v
242       --verbose
243           Enable verbose messages for debugging.
244
245       -V
246       --version
247           Display version number and exit.
248
249       --vgs
250       --volgroups
251       --volume-groups
252           Display LVM volume groups.
253
254       -x  Enable tracing of libguestfs API calls.
255

COLUMNS

257       Note that columns in the output are subject to reordering and change in
258       future versions of this tool.
259
260       Name
261           The filesystem, partition, block device or LVM name.
262
263           For device and partition names these are displayed as canonical
264           libguestfs names, so that for example /dev/sda2 is the second
265           partition on the first device.
266
267           If the --long option is not specified, then only the name column is
268           shown in the output.
269
270       Type
271           The object type, for example "filesystem", "lv", "device" etc.
272
273       VFS If there is a filesystem, then this column displays the filesystem
274           type if one could be detected, eg. "ext4".
275
276       Label
277           If the object has a label (used for identifying and mounting
278           filesystems) then this column contains the label.
279
280       MBR The partition type byte, displayed as a two digit hexadecimal
281           number.  A comprehensive list of partition types can be found here:
282           http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
283
284           This is only applicable for DOS (MBR) partitions.
285
286       Size
287           The size of the object in bytes.  If the --human option is used
288           then the size is displayed in a human-readable form.
289
290       Parent
291           The parent column records the parent relationship between objects.
292
293           For example, if the object is a partition, then this column
294           contains the name of the containing device.  If the object is a
295           logical volume, then this column is the name of the volume group.
296
297           If there is more than one parent, then this column is (internal to
298           the column) a comma-separated list, eg. "/dev/sda,/dev/sdb".
299
300       UUID
301           If the object has a UUID (used for identifying and mounting
302           filesystems and block devices) then this column contains the UUID
303           as a string.
304
305           The UUID is only displayed if the --uuid option is given.
306

NOTE ABOUT CSV FORMAT

308       Comma-separated values (CSV) is a deceptive format.  It seems like it
309       should be easy to parse, but it is definitely not easy to parse.
310
311       Myth: Just split fields at commas.  Reality: This does not work
312       reliably.  This example has two columns:
313
314        "foo,bar",baz
315
316       Myth: Read the file one line at a time.  Reality: This does not work
317       reliably.  This example has one row:
318
319        "foo
320        bar",baz
321
322       For shell scripts, use "csvtool" (https://github.com/Chris00/ocaml-csv
323       also packaged in major Linux distributions).
324
325       For other languages, use a CSV processing library (eg. "Text::CSV" for
326       Perl or Python’s built-in csv library).
327
328       Most spreadsheets and databases can import CSV directly.
329

EXIT STATUS

331       This program returns 0 if successful, or non-zero if there was an
332       error.
333

SEE ALSO

335       guestfs(3), guestfish(1), virt-cat(1), virt-df(1),
336       virt-list-filesystems(1), virt-list-partitions(1), csvtool(1),
337       http://libguestfs.org/.
338

AUTHOR

340       Richard W.M. Jones http://people.redhat.com/~rjones/
341
343       Copyright (C) 2010-2012 Red Hat Inc.
344

LICENSE

346       This program is free software; you can redistribute it and/or modify it
347       under the terms of the GNU General Public License as published by the
348       Free Software Foundation; either version 2 of the License, or (at your
349       option) any later version.
350
351       This program is distributed in the hope that it will be useful, but
352       WITHOUT ANY WARRANTY; without even the implied warranty of
353       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
354       General Public License for more details.
355
356       You should have received a copy of the GNU General Public License along
357       with this program; if not, write to the Free Software Foundation, Inc.,
358       51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
359

BUGS

361       To get a list of bugs against libguestfs, use this link:
362       https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools
363
364       To report a new bug against libguestfs, use this link:
365       https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
366
367       When reporting a bug, please supply:
368
369       •   The version of libguestfs.
370
371       •   Where you got libguestfs (eg. which Linux distro, compiled from
372           source, etc)
373
374       •   Describe the bug accurately and give a way to reproduce it.
375
376       •   Run libguestfs-test-tool(1) and paste the complete, unedited output
377           into the bug report.
378
379
380
381guestfs-tools-1.49.7              2022-12-10               virt-filesystems(1)
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