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Diffstat (limited to 'tests/vm')
| -rw-r--r-- | tests/vm/README | 90 |
1 files changed, 1 insertions, 89 deletions
diff --git a/tests/vm/README b/tests/vm/README index ae53dce6ee..f9c04cc0e7 100644 --- a/tests/vm/README +++ b/tests/vm/README @@ -1,89 +1 @@ -=== VM test suite to run build in guests === - -== Intro == - -This test suite contains scripts that bootstrap various guest images that have -necessary packages to build QEMU. The basic usage is documented in Makefile -help which is displayed with "make vm-test". - -== Quick start == - -Run "make vm-test" to list available make targets. Invoke a specific make -command to run build test in an image. For example, "make vm-build-freebsd" -will build the source tree in the FreeBSD image. The command can be executed -from either the source tree or the build dir; if the former, ./configure is not -needed. The command will then generate the test image in ./tests/vm/ under the -working directory. - -Note: images created by the scripts accept a well-known RSA key pair for SSH -access, so they SHOULD NOT be exposed to external interfaces if you are -concerned about attackers taking control of the guest and potentially -exploiting a QEMU security bug to compromise the host. - -== QEMU binary == - -By default, qemu-system-x86_64 is searched in $PATH to run the guest. If there -isn't one, or if it is older than 2.10, the test won't work. In this case, -provide the QEMU binary in env var: QEMU=/path/to/qemu-2.10+. - -== Make jobs == - -The "-j$X" option in the make command line is not propagated into the VM, -specify "J=$X" to control the make jobs in the guest. - -== Debugging == - -Add "DEBUG=1" and/or "V=1" to the make command to allow interactive debugging -and verbose output. If this is not enough, see the next section. - -== Manual invocation == - -Each guest script is an executable script with the same command line options. -For example to work with the netbsd guest, use $QEMU_SRC/tests/vm/netbsd: - - $ cd $QEMU_SRC/tests/vm - - # To bootstrap the image - $ ./netbsd --build-image --image /var/tmp/netbsd.img - <...> - - # To run an arbitrary command in guest (the output will not be echoed unless - # --debug is added) - $ ./netbsd --debug --image /var/tmp/netbsd.img uname -a - - # To build QEMU in guest - $ ./netbsd --debug --image /var/tmp/netbsd.img --build-qemu $QEMU_SRC - - # To get to an interactive shell - $ ./netbsd --interactive --image /var/tmp/netbsd.img sh - -== Adding new guests == - -Please look at existing guest scripts for how to add new guests. - -Most importantly, create a subclass of BaseVM and implement build_image() -method and define BUILD_SCRIPT, then finally call basevm.main() from the -script's main(). - - - Usually in build_image(), a template image is downloaded from a predefined - URL. BaseVM._download_with_cache() takes care of the cache and the - checksum, so consider using it. - - - Once the image is downloaded, users, SSH server and QEMU build deps should - be set up: - - * Root password set to BaseVM.ROOT_PASS - * User BaseVM.GUEST_USER is created, and password set to BaseVM.GUEST_PASS - * SSH service is enabled and started on boot, - $QEMU_SRC/tests/keys/id_rsa.pub is added to ssh's "authorized_keys" file - of both root and the normal user - * DHCP client service is enabled and started on boot, so that it can - automatically configure the virtio-net-pci NIC and communicate with QEMU - user net (10.0.2.2) - * Necessary packages are installed to untar the source tarball and build - QEMU - - - Write a proper BUILD_SCRIPT template, which should be a shell script that - untars a raw virtio-blk block device, which is the tarball data blob of the - QEMU source tree, then configure/build it. Running "make check" is also - recommended. +See docs/devel/testing.rst for help. |