guestfs-testing(1)

НАЗВА
guestfs-testing - manual testing of libguestfs, you can help!

ОПИС
This page has manual tests you can try on libguestfs. Everyone has a slightly different combination of platform, hardware and guests, so this testing is very valuable. Thanks for helping out!

Tests marked with a * (asterisk) can destroy data if you're not careful. The others are safe and won't modify anything.

Для виконання цих перевірок потрібна libguestfs ≥ 1.22.

Повідомляти про виявлені вади можна за цим посиланням:

https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools

or post on the mailing list (registration is not required, but if you're not registered then you'll have to wait for a moderator to manually approve your message):

https://www.redhat.com/mailman/listinfo/libguestfs

ТЕСТИ

  Виконання libguestfs-test-tool
Віддайте команду:

 libguestfs-test-tool

Ця команда виконує дуже просте і неруйнівне тестування того, чи є libguestfs працездатною на базовому рівні. Команду не потрібно віддавати від імені користувача root.

If it doesn't print "===== TEST FINISHED OK =====", report it as a bug. It is very important that you include the complete, unedited output of "libguestfs-test-tool" in your bug report. See the "BUGS" section at the end of this page.

  Перевірка використовуваного прискорення KVM.
If your host has hardware virt acceleration, then with a hot cache libguestfs should be able to start up in a few seconds. Run the following command a few times:

 time guestfish -a /dev/null run

After a few runs, the time should settle down to a few seconds (under 5 seconds on fast 64 bit hardware).

Як перевірити апаратну віртуалізацію:

http://virt-tools.org/learning/check-hardware-virt/

Якщо вказана вище команда не працюватиме, скористайтеся libguestfs-test-tool(1).

  Визначення використовуваних версій libguestfs, qemu, libvirt тощо.
Look at the output of "libguestfs-test-tool" and check:

•   Which version of libguestfs is being used? Near the beginning of the output you'll see a line like:

     library version: 1.22.0fedora=19,release=1.fc19,libvirt

•   Is libvirt being used? You can tell the difference by looking for the backend:

     guestfs_get_backend: direct

    або:

     guestfs_get_backend: libvirt

•   Which version of qemu is being used? It may be printed out:

     libguestfs: qemu version 1.5

•   Which kernel is being used? supermin(1) will try to pick the latest kernel installed on your machine. You can see the version in the appliance output, eg:

     [    0.000000] Linux version 3.9.2-200.fc18.x86_64 [...]

  Спроба відкриття локального образу гостьової системи за допомогою guestfish.
You can use any guest disk image for this test. Make sure you use the "--ro" flag so that guestfish(1) will open the disk image read-only.

 guestfish --ro -a /шлях/до/образу.диска -i

If the command is successful, it should print out the guest operating system name and put you at the guestfish "><fs>" prompt. You can use guestfish commands like "ll /" to look inside the disk image. To exit, type "exit".

If you get an error, try enabling debugging (add "-v" to the command line). Also make sure that libguestfs-test-tool(1) succeeds.

  Try to open a remote guest image with guestfish.
You may also have to disable libvirt by setting this:

 export LIBGUESTFS_BACKEND=direct

If you have a disk image available over HTTP/FTP, try to open it.

 guestfish --ro -i --format=raw -a http://www.example.com/disk.img

For SSH you will need to make sure that ssh-agent is set up so you don't need a password to log in to the remote machine. Then a command similar to this should work:

 guestfish --ro -i --format=raw \
   -a ssh://remote.example.com/path/to/disk.img

If you get an error, try enabling debugging (add "-v" to the command line). Also make sure that libguestfs-test-tool(1) succeeds.

  Run virt-alignment-scan on all your guests.
Run virt-alignment-scan(1) on guests or disk images:

 virt-alignment-scan -a /шлях/до/образу

або:

 virt-alignment-scan -d Guest

Does the alignment report match how the guest partitions are aligned?

  Run virt-cat on some files in guests.
virt-cat(1) can display files from guests. For a Linux guest, try:

 virt-cat LinuxGuest /etc/passwd

A recent feature is support for Windows paths, for example:

 virt-cat WindowsGuest 'c:\windows\win.ini'

An even better test is if you have a Windows guest with multiple drives. Do "D:", "E:" etc paths work correctly?

  * Копіювати файли до вимкненої гостьової системи.
virt-copy-in(1) може рекурсивно копіювати файли і каталоги до гостьової системи або образу диска.

 virt-copy-in -d Guest /etc /tmp

This should copy local directory /etc to /tmp/etc in the guest (recursively). If you boot the guest, can you see all of the copied files and directories?

Shut the guest down and try copying multiple files and directories:

 virt-copy-in -d Guest /home /etc/issue /tmp

  Копіювання якихось файлів з гостьової системи.
virt-copy-out(1) can recursively copy files and directories out of a guest or disk image.

 virt-copy-out -d Guest /home .

Зауважте, що завершальний пробіл і крапка у команді не є друкарською помилкою.

Це має скопіювати /home з гостьової системи до поточного каталогу.

  Виконайте virt-df.
virt-df(1) показує список даних щодо простору на диску. Віддайте команду:

 virt-df

You can try comparing this to the results from df(1) inside the guest, but there are some provisos:

•   Гостьова система має бути бездіяльною.

•   Диски гостьової системи має бути синхронізовано за допомогою sync(1).

•   Any action such as booting the guest will write log files causing the numbers to change.

We don't guarantee that the numbers will be identical even under these circumstances. They should be similar. It would indicate a bug if you saw greatly differing numbers.

  Try importing virt-df CSV output into a spreadsheet or database.
Віддайте команду:

 virt-df --csv > /tmp/report.csv

Now try to load this into your favorite spreadsheet or database. Are the results reproduced faithfully in the spreadsheet/database?

http://www.postgresql.org/docs/8.1/static/sql-copy.html http://dev.mysql.com/doc/refman/5.1/en/load-data.html

  * Edit a file in a shut off guest.
virt-edit(1) can edit files in guests. Try this command on a RHEL or Fedora guest:

 virt-edit LinuxGuest /etc/sysconfig/network

On other Linux guests try editing other files such as:

 virt-edit LinuxGuest /etc/motd

Are the changes seen inside the guest when it is booted?

  Display the filesystems / partitions / LVs in a guest.
virt-filesystems(1) can be used to display filesystems in a guest. Try this command on any disk image or guest:

 virt-filesystems -a /шлях/до/образу --all --long -h

або:

 virt-filesystems -d Guest --all --long -h

Do the results match what is seen in the guest?

  Запустіть virt-inspector для всіх ваших гостьових систем.
Use virt-inspector(1) to get a report on all of your guests or disk images:

 virt-inspector -a /шлях/до/образу | less

або:

 virt-inspector -d Guest | less

Do the results match what is actually in the guest?

If you have an unusual guest (a rare Linux distro, a very new version of Windows), does virt-inspector recognize it? If not, then it's probably a bug.

  Try the auditing features of virt-ls on all your guests.
Показати список всіх програм з setuid або setgid у віртуальній машині Linux:

 virt-ls -lR -d Guest / | grep '^- [42]'

Показати список всіх каталогів з відкритим для всіх доступом на запис у віртуальній машині Linux:

 virt-ls -lR -d Guest / | grep '^d ...7'

Показати список всіх сокетів доменів Unix у віртуальній машині Linux:

 virt-ls -lR -d Guest / | grep '^s'

Показати список всіх звичайних файлів, назви яких завершуються на «.png»:

 virt-ls -lR -d Guest / | grep -i '^-.*\.png$'

Щоб переглянути список файлів у домашніх каталогах, розмір яких перевищує 10 МБ:

 virt-ls -lR -d Guest /home | awk '$3 > 10*1024*1024'

Знайти всі об’єкти, які було змінено протягом попередніх 7 днів:

 virt-ls -lR -d Guest --time-days / | awk '$6 <= 7'

Знайти звичайні файли, зміни до яких було внесено протягом попередніх 24 годин:

 virt-ls -lR -d Guest --time-days / | grep '^-' | awk '$6 < 1'

Do the results match what is in the guest?

  Create a disk image from a tarball.
Use virt-make-fs(1) to create a disk image from any tarball that you happen to have:

 virt-make-fs --partition=mbr --type=vfat /десь/якийсь.tar.gz образ_результат.img

Add 'output.img' as a raw disk to an existing guest. Check the guest can see the files. This test is particularly useful if you try it with a Windows guest.

Try other partitioning schemes, eg. --partition=gpt.

Try other filesystem formats, eg. --type=ntfs, --type=ext2.

  * Run virt-rescue on a shut off disk image or guest.
Use virt-rescue(1) to examine, rescue or repair a shut off guest or disk image:

 virt-rescue -a /шлях/до/образу.img

або:

 virt-rescue -d Guest

Can you use ordinary shell commands to examine the guest?

  * Resize your guests.
Use virt-resize(1) to give a guest some more disk space. For example, if you have a disk image that is smaller than 30G, increase it to 30G by doing:

 truncate -s 30G newdisk.img
 virt-filesystems -a /path/to/olddisk.img --all --long -h
 virt-resize /path/to/olddisk.img newdisk.img --expand /dev/sda1
 qemu-kvm -m 1024 -hda newdisk.img

Does the guest still boot? Try expanding other partitions.

  * Sparsify a guest disk.
Using virt-sparsify(1), make a disk image more sparse:

 virt-sparsify /path/to/olddisk.img newdisk.img

Is newdisk.img still bootable after sparsifying? Is the resulting disk image smaller (use "du" to check)?

  Build and boot a guest
Using virt-builder(1), choose a guest from the list:

 virt-builder -l

build it:

 virt-builder -o disk.img [os-version from list above]

and boot it:

 qemu-kvm -cpu host -m 2048 -drive file=disk.img,format=raw

Does it boot?

  * "Sysprep" a shut off Linux guest.
Note that this really will mess up an existing guest, so it's better to clone the guest before trying this.

 virt-sysprep --hostname newhost.example.com -a /path/to/disk.img

Was the sysprep successful? After booting, what changes were made and were they successful?

  Dump the Windows Registry from your Windows guests.
Use virt-win-reg(1) to dump out the Windows Registry from any Windows guests that you have.

 virt-win-reg --unsafe-printable-strings WindowsGuest 'HKLM\Software' |
   less

 virt-win-reg --unsafe-printable-strings WindowsGuest 'HKLM\System' |
   less

Does the output match running "regedit" inside the guest?

A recent feature is the ability to dump user registries, so try this, replacing username with the name of a local user in the guest:

 virt-win-reg --unsafe-printable-strings WindowsGuest 'HKEY_USERS\користувач' |
   less

ТАКОЖ ПЕРЕГЛЯНЬТЕ
guestfs(3), guestfish(1), guestfs-examples(3), http://libguestfs.org/.

АВТОРИ
Richard W.M. Jones ("rjones at redhat dot com")

АВТОРСЬКІ ПРАВА
© Red Hat Inc., 2011–2012

LICENSE

BUGS
To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools

To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools

When reporting a bug, please supply:

•   The version of libguestfs.

•   Where you got libguestfs (eg. which Linux distro, compiled from source, etc)

•   Describe the bug accurately and give a way to reproduce it.

•   Run libguestfs-test-tool(1) and paste the complete, unedited output into the bug report.