書式

libguestfs-test-tool [--options]

説明

libguestfs-test-tool is a test program shipped with libguestfs to allow you to check basic libguestfs functionality is working. This is needed because libguestfs occasionally breaks for reasons beyond our control: usually because of changes in the underlying qemu or kernel packages, or the host environment.

If you suspect a problem in libguestfs, then just run:

 libguestfs-test-tool

It will print lots of diagnostic messages.

If it runs to completion successfully, you will see this near the end:

 ===== TEST FINISHED OK =====

and the test tool will exit with code 0.

If it fails (and/or exits with non-zero error code), please paste the complete, unedited output of the test tool into a bug report. More information about reporting bugs can be found on the http://libguestfs.org/ website.

オプション

--help

簡単な使用法を表示して、終了します。

--qemu qemu_binary

If you have downloaded another qemu binary, point this option at the full path of the binary to try it.

--qemudir qemu_source_dir

If you have compiled qemu from source, point this option at the source directory to try it.

-t N

--timeout N

Set the launch timeout to "N" seconds. The default is 600 seconds (10 minutes) which does not usually need to be adjusted.

-V

--version

libguestfs のバージョン番号を表示して、終了します。

TRYING OUT A DIFFERENT VERSION OF QEMU

If you have compiled another version of qemu from source and would like to try that, then you can use the --qemudir option to point to the qemu source directory.

If you have downloaded a qemu binary from somewhere, use the --qemu option to point to the binary.

Note when using these options, you can ignore the business of qemu wrapper scripts (``QEMU WRAPPERS'' in guestfs(3)), since libguestfs-test-tool writes a wrapper script for you if one is needed.

TRYING OUT A DIFFERENT KERNEL

You can tell supermin to try a different kernel. You do this by setting the environment variables "SUPERMIN_KERNEL", "SUPERMIN_KERNEL_VERSION" and/or "SUPERMIN_MODULES".

Refer to ``ENVIRONMENT VARIABLES'' in supermin(1) for further information.

TRYING OUT A DIFFERENT VERSION OF LIBVIRT

To find out which backend is the default in your libguestfs package, do:

 unset LIBGUESTFS_BACKEND
 guestfish get-backend

If you are using the libvirt backend, then you can try out a different (eg. upstream) version of libvirt by running these commands (not as root):

 killall libvirtd lt-libvirtd
 ~/path/to/libvirt/run libguestfs-test-tool

The first command kills any session "libvirtd" process(es) that may be running on the machine. The second command uses libvirt's "run" script (in the top-level libvirt build directory) to set some environment variables so that the alternate version of libvirt is used to run the program.

TRYING OUT WITH / WITHOUT LIBVIRT

To find out which backend is the default in your libguestfs package, do:

 unset LIBGUESTFS_BACKEND
 guestfish get-backend

If you are using the libvirt backend, you can try without (ie. libguestfs directly launching qemu) by doing:

 export LIBGUESTFS_BACKEND=direct

Or if you are using the default (direct) backend, then you can try libvirt:

 export LIBGUESTFS_BACKEND=libvirt

or with libvirt and a specific libvirt URI:

 export LIBGUESTFS_BACKEND=libvirt:qemu:///session

TRYING OUT DIFFERENT SELINUX SETTINGS

To find out which backend is the default in your libguestfs package, do:

 unset LIBGUESTFS_BACKEND
 guestfish get-backend

To find out if SELinux is being used, do:

 getenforce

If you are using libvirt, SELinux and sVirt, then you can try to see if changing SELinux to ``permissive'' mode makes any difference. Use this command as root:

 setenforce Permissive

If this makes a difference, look in the audit logs for recent failures (``AVCs''):

 ausearch -m avc -ts recent

You can convert AVCs into suggested SELinux policy rules using tools like audit2allow(1). For more information, see the ``Security Enhanced Linux User Guide''.

To reenable SELinux and sVirt, do:

 setenforce Enforcing

自己診断

libguestfs-test-tool および/または起こりうるエラーにより生成されるメッセージを理解するには ``アプライアンス起動プロセス'' in guestfs(3) を参照してください。

終了ステータス

libguestfs-test-tool returns 0 if the tests completed without error, or 1 if there was an error.

環境変数

libguestfs に影響する環境変数の完全な一覧は guestfs(3) マニュアルページを参照してください。

著者

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

COPYRIGHT

Copyright (C) 2009-2016 Red Hat Inc.

LICENSE