| libguestfs-test-tool(1) | Virtualization Support | libguestfs-test-tool(1) |
libguestfs-test-tool - libguestfs の診断
libguestfs-test-tool [--options]
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.
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.
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.
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.
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
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
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。
libguestfs-test-tool returns 0 if the tests completed without error, or 1 if there was an error.
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。
guestfs(3), http://libguestfs.org/, http://qemu.org/.
Richard W.M. Jones ("rjones at redhat dot com")
Copyright (C) 2009-2020 Red Hat Inc.
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:
| 2021-01-05 | libguestfs-1.44.0 |