1virt-filesystems(1) Virtualization Support virt-filesystems(1)
2
6 virt-filesystems - List filesystems, partitions, block devices, LVM in
7 a virtual machine or disk image
8
10 virt-filesystems [--options] -d domname
11 virt-filesystems [--options] -a disk.img [-a disk.img ...]
13
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 One use for this tool is from shell scripts to iterate over all
20 filesystems from a disk image:
21 for fs in $(virt-filesystems -a disk.img); do
23 # ...
24 done
25 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 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 $ virt-filesystems -a disk.img
37 /dev/sda1
38 /dev/vg_guest/lv_root
39 If you add -l or --long then the output includes extra information:
41 $ 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 If you add --extra then non-mountable (swap, unknown) filesystems are
48 shown as well:
49 $ 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 If you add --partitions then partitions are shown instead of
57 filesystems:
58 $ virt-filesystems -a disk.img --partitions
60 /dev/sda1
61 /dev/sda2
62 Similarly you can use --logical-volumes, --volume-groups,
64 --physical-volumes, --block-devices to list those items.
65 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 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 --all --long --uuid is a useful combination to display all possible
78 information about everything.
79 $ 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 For machine-readable output, use --csv to get Comma-Separated Values.
89
91 --help
92 Display brief help.
93 -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 The format of the disk image is auto-detected. To override this
101 and force a particular format use the --format=.. option.
102 -a URI
104 --add URI
105 Add a remote disk. See "ADDING REMOTE STORAGE" in guestfish(1).
106 --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 See also --long.
114 --blkdevs
116 --block-devices
117 Display block devices.
118 -c URI
120 --connect URI
121 If using libvirt, connect to the given URI. If omitted, then we
122 connect to the default libvirt hypervisor.
123 If you specify guest block devices directly (-a), then libvirt is
125 not used at all.
126 --csv
128 Write out the results in CSV format (comma-separated values). This
129 format can be imported easily into databases and spreadsheets, but
130 read "NOTE ABOUT CSV FORMAT" below.
131 -d guest
133 --domain guest
134 Add all the disks from the named libvirt guest. Domain UUIDs can
135 be used instead of names.
136 --echo-keys
138 When prompting for keys and passphrases, virt-filesystems normally
139 turns echoing off so you cannot see what you are typing. If you
140 are not worried about Tempest attacks and there is no one else in
141 the room you can specify this flag to see what you are typing.
142 --extra
144 This causes filesystems that are not ordinary, mountable
145 filesystems to be displayed. This category includes swapspace, and
146 filesystems that are empty or contain unknown data.
147 This option implies --filesystems.
149 --filesystems
151 Display mountable filesystems. If no display option was selected
152 then this option is implied.
153 With --extra, non-mountable filesystems are shown too.
155 --format=raw|qcow2|..
157 --format
158 The default for the -a option is to auto-detect the format of the
159 disk image. Using this forces the disk format for -a options which
160 follow on the command line. Using --format with no argument
161 switches back to auto-detection for subsequent -a options.
162 For example:
164 virt-filesystems --format=raw -a disk.img
166 forces raw format (no auto-detection) for disk.img.
168 virt-filesystems --format=raw -a disk.img --format -a another.img
170 forces raw format (no auto-detection) for disk.img and reverts to
172 auto-detection for another.img.
173 If you have untrusted raw-format guest disk images, you should use
175 this option to specify the disk format. This avoids a possible
176 security problem with malicious guests (CVE-2010-3851).
177 -h
179 --human-readable
180 In --long mode, display sizes in human-readable format.
181 --keys-from-stdin
183 Read key or passphrase parameters from stdin. The default is to
184 try to read passphrases from the user by opening /dev/tty.
185 -l
187 --long
188 Display extra columns of data ("long format").
189 A title row is added unless you also specify --no-title.
191 The extra columns displayed depend on what output you select, and
193 the ordering of columns may change in future versions. Use the
194 title row, --csv output and/or csvtool(1) to match columns to data
195 in external programs.
196 Use -h if you want sizes to be displayed in human-readable format.
198 The default is to show raw numbers of bytes.
199 Use --uuid to display UUIDs too.
201 --lvs
203 --logvols
204 --logical-volumes
205 Display LVM logical volumes. In this mode, these are displayed
206 irrespective of whether the LVs contain filesystems.
207 --no-title
209 In --long mode, don’t add a title row.
210 Note that the order of the columns is not fixed, and may change in
212 future versions of virt-filesystems, so using this option may give
213 you unexpected surprises.
214 --parts
216 --partitions
217 Display partitions. In this mode, these are displayed irrespective
218 of whether the partitions contain filesystems.
219 --pvs
221 --physvols
222 --physical-volumes
223 Display LVM physical volumes.
224 --uuid
226 --uuids
227 In --long mode, display UUIDs as well.
228 -v
230 --verbose
231 Enable verbose messages for debugging.
232 -V
234 --version
235 Display version number and exit.
236 --vgs
238 --volgroups
239 --volume-groups
240 Display LVM volume groups.
241 -x Enable tracing of libguestfs API calls.
243
245 Note that columns in the output are subject to reordering and change in
246 future versions of this tool.
247 Name
249 The filesystem, partition, block device or LVM name.
250 For device and partition names these are displayed as canonical
252 libguestfs names, so that for example /dev/sda2 is the second
253 partition on the first device.
254 If the --long option is not specified, then only the name column is
256 shown in the output.
257 Type
259 The object type, for example "filesystem", "lv", "device" etc.
260 VFS If there is a filesystem, then this column displays the filesystem
262 type if one could be detected, eg. "ext4".
263 Label
265 If the object has a label (used for identifying and mounting
266 filesystems) then this column contains the label.
267 MBR The partition type byte, displayed as a two digit hexadecimal
269 number. A comprehensive list of partition types can be found here:
270 http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
271 This is only applicable for DOS (MBR) partitions.
273 Size
275 The size of the object in bytes. If the --human option is used
276 then the size is displayed in a human-readable form.
277 Parent
279 The parent column records the parent relationship between objects.
280 For example, if the object is a partition, then this column
282 contains the name of the containing device. If the object is a
283 logical volume, then this column is the name of the volume group.
284 If there is more than one parent, then this column is (internal to
286 the column) a comma-separated list, eg. "/dev/sda,/dev/sdb".
287 UUID
289 If the object has a UUID (used for identifying and mounting
290 filesystems and block devices) then this column contains the UUID
291 as a string.
292 The UUID is only displayed if the --uuid option is given.
294
296 Comma-separated values (CSV) is a deceptive format. It seems like it
297 should be easy to parse, but it is definitely not easy to parse.
298 Myth: Just split fields at commas. Reality: This does not work
300 reliably. This example has two columns:
301 "foo,bar",baz
303 Myth: Read the file one line at a time. Reality: This does not work
305 reliably. This example has one row:
306 "foo
308 bar",baz
309 For shell scripts, use "csvtool" (https://github.com/Chris00/ocaml-csv
311 also packaged in major Linux distributions).
312 For other languages, use a CSV processing library (eg. "Text::CSV" for
314 Perl or Python’s built-in csv library).
315 Most spreadsheets and databases can import CSV directly.
317
319 This program returns 0 if successful, or non-zero if there was an
320 error.
321
323 guestfs(3), guestfish(1), virt-cat(1), virt-df(1),
324 virt-list-filesystems(1), virt-list-partitions(1), csvtool(1),
325 http://libguestfs.org/.
326
328 Richard W.M. Jones http://people.redhat.com/~rjones/
329
331 Copyright (C) 2010-2012 Red Hat Inc.
332
334 This program is free software; you can redistribute it and/or modify it
335 under the terms of the GNU General Public License as published by the
336 Free Software Foundation; either version 2 of the License, or (at your
337 option) any later version.
338 This program is distributed in the hope that it will be useful, but
340 WITHOUT ANY WARRANTY; without even the implied warranty of
341 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
342 General Public License for more details.
343 You should have received a copy of the GNU General Public License along
345 with this program; if not, write to the Free Software Foundation, Inc.,
346 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
347
349 To get a list of bugs against libguestfs, use this link:
350 https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools
351 To report a new bug against libguestfs, use this link:
353 https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
354 When reporting a bug, please supply:
356 · The version of libguestfs.
358 · Where you got libguestfs (eg. which Linux distro, compiled from
360 source, etc)
361 · Describe the bug accurately and give a way to reproduce it.
363 · Run libguestfs-test-tool(1) and paste the complete, unedited output
365 into the bug report.
366libguestfs-1.38.2 2018-05-15 virt-filesystems(1)