- Devel - libvirt List Archives

[libvirt] [PATCH V8 0/3] Add support for QEMU file descriptor sets
by Stefan Berger 21 Feb '13

21 Feb '13

The following patch series adds initial support for QEMU file descriptor sets implementing support for creating the proper command line. Some devices are using the sets now. Regards, Stefan

1 3

[libvirt] [PATCH] docs: Add missing 'vram' in QXL video device doc
by Christophe Fergeau 21 Feb '13

21 Feb '13

--- Pushed under the trivial rule. docs/formatdomain.html.in | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index ffcc33e..a9003d7 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -3583,7 +3583,8 @@ qemu-kvm -net nic,model=? /dev/null attribute <code>ram</code> (since 1.0.2) is allowed for "qxl" type only and specifies the size of the primary bar, while <code>vram</code> specifies the - secondary bar size. If "ram" is not supplied a default value is used. + secondary bar size. If "ram" or "vram" are not supplied a default + value is used. </dd> <dt><code>model</code></dt> -- 1.8.1.2

1 0

[libvirt] [test-API][PATCH v2] Add 2 host node memory API cases
by Wayne Sun 21 Feb '13

21 Feb '13

v1: add 2 host node memory cases and update conf - node_mem_param: tuning host node memory parameters - node_memory: get host node memory info, including host free memory, node free memory and node memory stats - numa_param conf is updated with the 2 new cases v2: node_mem_param: polish codes with better readability node_memory: direct fetch info in /sys/devices/system/node/node* other than using command 'numastat' Signed-off-by: Wayne Sun <gsun(a)redhat.com> --- cases/numa_param.conf | 8 ++++ repos/numa/node_mem_param.py | 81 ++++++++++++++++++++++++++++++++ repos/numa/node_memory.py | 107 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 196 insertions(+) create mode 100644 repos/numa/node_mem_param.py create mode 100644 repos/numa/node_memory.py diff --git a/cases/numa_param.conf b/cases/numa_param.conf index 64268a3..515fb1f 100644 --- a/cases/numa_param.conf +++ b/cases/numa_param.conf @@ -1,3 +1,11 @@ +numa:node_memory + +numa:node_mem_param + shm_pages_to_scan + 200 + shm_sleep_millisecs + 20 + domain:install_linux_cdrom guestname $defaultname diff --git a/repos/numa/node_mem_param.py b/repos/numa/node_mem_param.py new file mode 100644 index 0000000..86242b1 --- /dev/null +++ b/repos/numa/node_mem_param.py @@ -0,0 +1,81 @@ +#!/usr/bin/env python +# Test tuning host node memory parameters + +import libvirt +from libvirt import libvirtError + +from src import sharedmod + +required_params = () +optional_params = {"shm_pages_to_scan": 100, + "shm_sleep_millisecs": 20, + "shm_merge_across_nodes": 1 + } + +KSM_PATH = "/sys/kernel/mm/ksm/" + +def node_mem_param(params): + """test set host node memory parameters + """ + logger = params['logger'] + shm_pages_to_scan = params.get('shm_pages_to_scan') + shm_sleep_millisecs = params.get('shm_sleep_millisecs') + shm_merge_across_nodes = params.get('shm_merge_across_nodes') + + if not shm_pages_to_scan \ + and not shm_sleep_millisecs \ + and not shm_merge_across_nodes: + logger.error("given param is none") + return 1 + + param_dict = {} + for i in optional_params.keys(): + if eval(i): + param_dict[i] = int(eval(i)) + + logger.info("the given param dict is: %s" % param_dict) + + conn = sharedmod.libvirtobj['conn'] + + try: + logger.info("get host node memory parameters") + mem_pre = conn.getMemoryParameters(0) + logger.info("host node memory parameters is: %s" % mem_pre) + + logger.info("set host node memory parameters with given param %s" % + param_dict) + conn.setMemoryParameters(param_dict, 0) + logger.info("set host node memory parameters done") + + logger.info("get host node memory parameters") + mem_pos = conn.getMemoryParameters(0) + logger.info("host node memory parameters is: %s" % mem_pos) + + for i in param_dict.keys(): + if not mem_pos[i] == param_dict[i]: + logger.error("%s is not set as expected" % i) + + logger.info("node memory parameters is set as expected") + + logger.info("check tuning detail under %s" % KSM_PATH) + + ksm_dict = {} + for i in param_dict.keys(): + path = "%s%s" % (KSM_PATH, i[4:]) + f = open(path) + ret = int(f.read().split('\n')[0]) + f.close() + logger.info("%s value is: %s" % (path, ret)) + ksm_dict[i] = ret + + if ksm_dict == param_dict: + logger.info("tuning detail under %s is expected" % KSM_PATH) + else: + logger.error("check with tuning detail under %s failed" % KSM_PATH) + return 1 + + except libvirtError, e: + logger.error("libvirt call failed: " + str(e)) + return 1 + + return 0 diff --git a/repos/numa/node_memory.py b/repos/numa/node_memory.py new file mode 100644 index 0000000..0241f3c --- /dev/null +++ b/repos/numa/node_memory.py @@ -0,0 +1,107 @@ +#!/usr/bin/env python +# Test get host node memory info, including host free +# memory, node free memory and node memory stats. + +import math + +import libvirt +from libvirt import libvirtError + +from src import sharedmod +from utils import utils + +required_params = () +optional_params = {} + +NODE_MEMINFO_PATH = "/sys/devices/system/node/node*/meminfo" + +def node_memory(params): + """test get host node memory info + """ + logger = params['logger'] + + cmd = "lscpu|grep 'NUMA node(s)'" + ret, output = utils.exec_cmd(cmd, shell=True) + node_num = int(output[0].split(' ')[-1]) + logger.info("host total nodes number is: %s" % node_num) + + conn = sharedmod.libvirtobj['conn'] + + cmd = "grep 'MemFree' %s" % NODE_MEMINFO_PATH + node_mem = [] + free_total = 0 + ret, out = utils.exec_cmd(cmd, shell=True) + for i in range(node_num): + mem_free = int(out[i].split()[-2]) + node_mem.append(mem_free) + free_total += mem_free + + try: + logger.info("get host total free memory") + mem = conn.getFreeMemory()/1024 + logger.info("host free memory total is: %s KiB" % mem) + logger.info("free memory collected in %s is: %s KiB" % + (NODE_MEMINFO_PATH, free_total)) + + if math.fabs(mem - free_total) > 1024: + logger.error("free memory mismatch with info collected in %s" % + NODE_MEMINFO_PATH) + return 1 + else: + logger.info("get host free memory succeed") + + logger.info("get free memory of nodes") + ret = conn.getCellsFreeMemory(0, node_num) + mem_list = [i/1024 for i in ret] + logger.info("node free memory list is: %s" % mem_list) + logger.info("node free memory list collected in %s is: %s" % + (NODE_MEMINFO_PATH, node_mem)) + + for i in range(node_num): + if math.fabs(mem_list[i] - node_mem[i]) > 1024: + path = NODE_MEMINFO_PATH.replace('*', '%s') % i + logger.error("node %s free memory mismatch with collected in %s" + % (i, path)) + return 1 + + logger.info("get node free memory succeed") + + logger.info("get node memory stats") + node_dict = {} + for i in range(node_num): + ret = conn.getMemoryStats(i, 0) + node_dict[i] = ret + logger.info("node %s memory stats is: %s" % (i, node_dict[i])) + + node_tmp = {} + cmd_new = "grep 'MemTotal' %s" % NODE_MEMINFO_PATH + ret, out_free = utils.exec_cmd(cmd, shell=True) + ret, out_total = utils.exec_cmd(cmd_new, shell=True) + for i in range(node_num): + dict_tmp = {} + path = NODE_MEMINFO_PATH.replace('*', '%s') % i + dict_tmp['free'] = int(out_free[i].split()[-2]) + dict_tmp['total'] = int(out_total[i].split()[-2]) + node_tmp[i] = dict_tmp + logger.info("node %s memory stats collected in %s is: %s" % + (i, path, node_tmp[i])) + + for i in range(node_num): + path = NODE_MEMINFO_PATH.replace('*', '%s') % i + if math.fabs(node_tmp[i]['total'] - node_dict[i]['total']) > 1024: + logger.error("node %s total memory is mismatch with %s" % + (i, path)) + return 1 + + if math.fabs(node_tmp[i]['free'] - node_dict[i]['free']) > 1024: + logger.error("node %s free memory is mismatch with %s" % + (i, path)) + return 1 + + logger.info("get node memory stats succeed") + + except libvirtError, e: + logger.error("libvirt call failed: " + str(e)) + return 1 + + return 0 -- 1.8.1

1 0

[libvirt] libvirt maint branches
by Doug Goldstein 21 Feb '13

21 Feb '13

Instead of hijacking another thread I figured I'd start a new one. I tried to push the branch I had made as requested by Jiri, but I don't appear to have access. $ git push origin v1.0.2-maint Counting objects: 30, done. Delta compression using up to 4 threads. Compressing objects: 100% (18/18), done. Writing objects: 100% (22/22), 3.44 KiB, done. Total 22 (delta 16), reused 5 (delta 4)remote: *** Creating a branch is not allowed in this repository remote: error: hook declined to update refs/heads/v1.0.2-maint To ssh://libvirt.org/git/libvirt.git ! [remote rejected] v1.0.2-maint -> v1.0.2-maint (hook declined) error: failed to push some refs to 'ssh://libvirt.org/git/libvirt.git' How do we want to go about actually creating these branches? I make one everytime I have to backport a fix due to a regression from a previous release. I'll typically only keep them "maintained" until the next official release. I wouldn't consider them stable like what Cole maintains but more like someone ran into an issue and it needed a fix. So there might be other issues in them that go undiscovered or unsolved. I just say this because I don't want to clutter the repo with a lot of useless branches, but again if people think they'd be useful I'm happy to push them. -- Doug Goldstein

2 1

[libvirt] [PATCH 0/2] qemu: Fix deadlocks in autodestroy
by Jiri Denemark 21 Feb '13

21 Feb '13

After the recent removal of qemu driver locks, implicit driver locks were introduced in places that previously relied on being called from functions that alread had the driver locked. Thus calling anything complex (such as close callbacks) must not be called when the driver is locked... Jiri Denemark (2): qemu: Turn closeCallbacks into virObjectLockable qemu: Avoid deadlock in autodestroy src/qemu/qemu_conf.c | 172 ++++++++++++++++++++++++++++------------------ src/qemu/qemu_conf.h | 43 ++++++------ src/qemu/qemu_domain.h | 1 + src/qemu/qemu_driver.c | 12 ++-- src/qemu/qemu_migration.c | 6 +- src/qemu/qemu_process.c | 20 ++++-- 6 files changed, 153 insertions(+), 101 deletions(-) -- 1.8.1.2

4 10

[libvirt] [PATCH] docs: Fix HTML errors
by Jiri Denemark 21 Feb '13

21 Feb '13

<pre> is forbidden inside --- Pushed as trivial. docs/formatnetwork.html.in | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index adb5bb9..f7c483d 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -143,6 +143,7 @@ The address range is set with the <code><address></code> subelements and <code>start</code> and <code>stop</code> attributes: + <pre> ... <forward mode='nat'> @@ -150,8 +151,8 @@ <address start='1.2.3.4' end='1.2.3.10'/> </nat> </forward> -... - </pre> +...</pre> + An singe IPv4 address can be set by setting <code>start</code> and <code>end</code> attributes to the same value. @@ -159,6 +160,7 @@ The port range to be used for the <code><nat></code> can be set via the subelement <code><port></code>: + <pre> ... <forward mode='nat'> @@ -166,9 +168,7 @@ <port start='500' end='1000'/> </nat> </forward> -... - </pre> - +...</pre> </dd> <dt><code>route</code></dt> -- 1.8.1.2

1 0

[libvirt] [PATCH 0/6] VirtIO RNG device support
by Peter Krempa 21 Feb '13

21 Feb '13

This patchset adds VirtIO RNG device support to libvirt and it's qemu driver. Both ("random" and "egd") qemu backends are supported. This series is techincally a v2 but the changes to the previous version are substantial so I'm not marking it as such. Peter Krempa (6): doc: schema: Add basic documentation for the virtual RNG device support conf: Add support for RNG device configuration in XML conf: Add RNG device ABI compatibility check qemu: Implement support for the RNG device and the random backend qemu: Implement support for EGD backend for virtio-rng tests: Add tests for virtio-rng device handling docs/formatdomain.html.in | 69 +++++++ docs/schemas/domaincommon.rng | 32 +++ src/conf/domain_conf.c | 229 ++++++++++++++++++++- src/conf/domain_conf.h | 37 ++++ src/libvirt_private.syms | 2 + src/qemu/qemu_capabilities.c | 6 + src/qemu/qemu_capabilities.h | 4 + src/qemu/qemu_command.c | 116 +++++++++++ .../qemuxml2argv-virtio-rng-egd.args | 1 + .../qemuxml2argv-virtio-rng-egd.xml | 26 +++ .../qemuxml2argv-virtio-rng-random.args | 1 + .../qemuxml2argv-virtio-rng-random.xml | 23 +++ tests/qemuxml2argvtest.c | 5 + tests/qemuxml2xmltest.c | 3 + 14 files changed, 553 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-egd.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-egd.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.xml -- 1.8.1.1

2 19

[libvirt] building libvirt 1.0.2 without quite a few features - undefined reference to `curl_global_init'
by Thierry Parmentelat 21 Feb '13

21 Feb '13

Hi there I'm trying to rebuild libvirt 1.0.2 on various targets - mostyl f16 and f18 for now I've started from the specfile that I found in this source rpm here http://libvirt.org/sources/libvirt-1.0.2-1.fc17.src.rpm in which I've mostly added without clauses : %define _without_storage_disk true %define _without_storage_iscsi true %define _without_storage_fs true %define _without_storage_lvm true %define _without_polkit true %define _without_sasl true %define _without_audit true %define _without_netcf true %define _without_avahi true %define _without_sanlock true %define _without_xen true %define _without_qemu true %define _without_hyperv true %define _without_phyp true %define _without_esx true %define _without_libxl true when building with these settings though, I'm facing this undefined error below; this happened on both f16 and f18 I take it there must be something slightly broken in the specfile logic, if anybody had a hint on how to address this is would be much appreciated For one thing I don't know how to get the real sentence behind this 'CCLD' thing, so I could check if libcurl (which I believe should provide that symbol) is mentioned or not.. CCLD libvirtd /longbuildroot/BUILD/libvirt-1.0.2/src/.libs/libvirt.so: undefined reference to `curl_global_init' many thanks in anticipation -- Thierry

4 11

[libvirt] [test-API][PATCH] Add 2 host node memory API cases
by Wayne Sun 21 Feb '13

21 Feb '13

add 2 host node memory cases and update conf - node_mem_param: tuning host node memory parameters. - node_memory: get host node memory info, including host free memory, node free memory and node memory stats. - numa_param conf is updated with the 2 new cases Signed-off-by: Wayne Sun <gsun(a)redhat.com> --- cases/numa_param.conf | 8 ++++ repos/numa/node_mem_param.py | 86 ++++++++++++++++++++++++++++++++++++ repos/numa/node_memory.py | 101 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 195 insertions(+) create mode 100644 repos/numa/node_mem_param.py create mode 100644 repos/numa/node_memory.py diff --git a/cases/numa_param.conf b/cases/numa_param.conf index 64268a3..515fb1f 100644 --- a/cases/numa_param.conf +++ b/cases/numa_param.conf @@ -1,3 +1,11 @@ +numa:node_memory + +numa:node_mem_param + shm_pages_to_scan + 200 + shm_sleep_millisecs + 20 + domain:install_linux_cdrom guestname $defaultname diff --git a/repos/numa/node_mem_param.py b/repos/numa/node_mem_param.py new file mode 100644 index 0000000..ba6f8f4 --- /dev/null +++ b/repos/numa/node_mem_param.py @@ -0,0 +1,86 @@ +#!/usr/bin/env python +# Test tuning host node memory parameters + +import libvirt +from libvirt import libvirtError + +from src import sharedmod + +required_params = () +optional_params = {"shm_pages_to_scan": 100, + "shm_sleep_millisecs": 20, + "shm_merge_across_nodes": 1 + } + +KSM_PATH = "/sys/kernel/mm/ksm/" + +def node_mem_param(params): + """test set host node memory parameters + """ + logger = params['logger'] + shm_pages_to_scan = params.get('shm_pages_to_scan') + shm_sleep_millisecs = params.get('shm_sleep_millisecs') + shm_merge_across_nodes = params.get('shm_merge_across_nodes') + + if not shm_pages_to_scan \ + and not shm_sleep_millisecs \ + and not shm_merge_across_nodes: + logger.error("given param is none") + return 1 + + param_dict = {} + tmp = ('shm_pages_to_scan', 'shm_sleep_millisecs', 'shm_merge_across_nodes') + tmp1 = ('pages_to_scan', 'sleep_millisecs', 'merge_across_nodes') + for i in tmp: + if eval(i): + param_dict[i] = int(eval(i)) + + logger.info("the given param dict is: %s" % param_dict) + + conn = sharedmod.libvirtobj['conn'] + + try: + logger.info("get host node memory parameters") + mem_pre = conn.getMemoryParameters(0) + logger.info("host node memory parameters is: %s" % mem_pre) + + logger.info("set host node memory parameters with given param %s" % + param_dict) + conn.setMemoryParameters(param_dict, 0) + logger.info("set host node memory parameters done") + + logger.info("get host node memory parameters") + mem_pos = conn.getMemoryParameters(0) + logger.info("host node memory parameters is: %s" % mem_pos) + + for i in tmp: + if eval(i): + if not mem_pos[i] == param_dict[i]: + logger.error("%s is not set as expected" % i) + + logger.info("node memory parameters is set as expected") + + logger.info("check tuning detail under %s" % KSM_PATH) + + mem_tmp = {} + for i in tmp1: + str_tmp = 'shm_%s' % i + if eval(str_tmp): + path = "%s%s" % (KSM_PATH, i) + f = open(path) + ret = int(f.read().split('\n')[0]) + f.close() + logger.info("%s value is: %s" % (path, ret)) + mem_tmp[str_tmp] = ret + + if mem_tmp == param_dict: + logger.info("tuning detail under %s is expected" % KSM_PATH) + else: + logger.error("check with tuning detail under %s failed" % KSM_PATH) + return 1 + + except libvirtError, e: + logger.error("libvirt call failed: " + str(e)) + return 1 + + return 0 diff --git a/repos/numa/node_memory.py b/repos/numa/node_memory.py new file mode 100644 index 0000000..47d3b4a --- /dev/null +++ b/repos/numa/node_memory.py @@ -0,0 +1,101 @@ +#!/usr/bin/env python +# Test get host node memory info, including host free +# memory, node free memory and node memory stats. + +import math + +import libvirt +from libvirt import libvirtError + +from src import sharedmod +from utils import utils + +required_params = () +optional_params = {} + +CMD = "numastat -m" + +def node_memory(params): + """test get host node memory info + """ + logger = params['logger'] + + cmd = "lscpu|grep 'NUMA node(s)'" + ret, output = utils.exec_cmd(cmd, shell=True) + node_num = int(output[0].split(' ')[-1]) + logger.info("host total nodes number is: %s" % node_num) + + conn = sharedmod.libvirtobj['conn'] + + try: + logger.info("get host total free memory") + mem = conn.getFreeMemory()/1048576 + logger.info("host free memory total is: %s KiB" % mem) + ret, out = utils.exec_cmd(CMD, shell=True) + mem_total = " ".join(out[5].split()).split()[-1] + mem_total = int(eval(mem_total)) + logger.info("output of '%s' is: %s KiB" % (CMD, mem_total)) + + if math.fabs(mem - mem_total) > 1: + logger.error("free memory mismatch with result of '%s'" % CMD) + return 1 + else: + logger.info("get host free memory succeed") + + logger.info("get free memory of nodes") + ret = conn.getCellsFreeMemory(0, node_num) + mem = [i/1048576 for i in ret] + logger.info("nodes free memory list is: %s" % mem) + + ret, out = utils.exec_cmd(CMD, shell=True) + mem_tmp = " ".join(out[5].split()).split()[1:-1] + node_mem = [int(eval(i)) for i in mem_tmp] + logger.info("output of '%s' is: %s" % (CMD, node_mem)) + + for i in range(node_num): + if math.fabs(mem[i] - node_mem[i]) > 1: + logger.error("node %s free memory mismatch with command '%s'" + % CMD) + return 1 + + logger.info("get node free memory succeed") + + logger.info("get node memory stats") + node_dict = {} + for i in range(node_num): + ret = conn.getMemoryStats(i, 0) + for j in ret.keys(): + ret[j] = ret[j]/1024 + node_dict[i] = ret + logger.info("node %s memory stats is: %s" % (i, node_dict[i])) + + node_tmp = {} + logger.info("get node memory stats with '%s'" % CMD) + ret, out = utils.exec_cmd(CMD, shell=True) + mem_total_tmp = " ".join(out[4].split()).split()[1:-1] + mem_free_tmp = " ".join(out[5].split()).split()[1:-1] + for i in range(node_num): + dict_tmp = {} + dict_tmp['total'] = int(eval(mem_total_tmp[i])) + dict_tmp['free'] = int(eval(mem_free_tmp[i])) + node_tmp[i] = dict_tmp + logger.info("node %s memory stats is: %s" % (i, node_tmp[i])) + + for i in range(node_num): + if math.fabs(node_tmp[i]['total'] - node_dict[i]['total']) > 1: + logger.error("node %s total memory is mismatch with of '%s'" % + (i, CMD)) + return 1 + + if math.fabs(node_tmp[i]['free'] - node_dict[i]['free']) > 1: + logger.error("node %s free memory is mismatch with of '%s'" % + (i, CMD)) + return 1 + + logger.info("get node memory stats succeed") + + except libvirtError, e: + logger.error("libvirt call failed: " + str(e)) + return 1 + + return 0 -- 1.8.1

2 1

[libvirt] libvirt testing with autotest
by Cole Robinson 21 Feb '13

21 Feb '13

Recently I've been playing with virt autotest, which provides a number of qemu and libvirt functional tests. Here's some notes on how to get it running: The super short version of running the libvirt smoke tests on Fedora 18: yum install autotest-framework git clone git://github.com/autotest/virt-test.git autotest-virt-tests cd autotest-virt-tests ./libvirt/get_started.py ./run --type libvirt For me the default tests take under a minute. Output looks like: SETUP: PASS (1.00 s) DATA DIR: /home/crobinso/virt_test DEBUG LOG: /home/crobinso/src/autotest-virt-tests/logs/run-2013-02-11-14.21.47/debug.log TESTS: 28 (1/28) unattended_install.import.import: PASS (23.31 s) (2/28) virsh_domname.vm_state.vm_running.with_valid_option.domid: PASS (1.59 s) (3/28) virsh_domname.vm_state.vm_running.with_valid_option.uuid: PASS (0.47 s) ... (27/28) virsh_domname.with_libvirtd_stop.with_valid_option.uuid: PASS (0.55 s) (28/28) remove_guest.without_disk: PASS (6.77 s) TOTAL TIME: 42.30 s TESTS PASSED: 28 TESTS FAILED: 0 SUCCESS RATE: 100.00 % Now with a bit more detail. The first 4 steps are one time setup, though you will want to update autotest-virt-tests every now and then. The default set of libvirt tests import a VM with virt-install, verify that we can SSH in, run a bunch of virsh domname validation, and remove the guest. Logs are dumped into the autotest-virt-tests/logs directory. autotest-framework is just the client side piece. autotest also has a server component which has web UI, handles job scheduling, and tracks results in a database, but not needed for casual developer usage. virt-test.git is the repo that actually contains all the qemu and libvirt test cases. There are also tests for virt-v2v, libguestfs, ovirt, and openvswitch, but qemu and libvirt have the most tests by far. libvirt has 600 test cases, but many of these are just parameter validation matrices. libvirt TCK likely has more functional tests. All the code is in python. The libvirt test cases actually use virsh and not the python bindings. This was a deliberate choice to get better virsh coverage. The code is pretty nice so impl wise dealing with virsh isn't hard at all. ./libvirt/get_started.py is an interactive script that ensures needed dependencies are installed, and pulls down a pre made Fedora 17 jeos (just enough operating system) image. All the tests run against that image by default. ./run is how you'll interact with everything. The important invocations: # List all libvirt tests ./run --type libvirt --list-tests # Show all test debugging and stdout to the console ./run --verbose ... # Run only specific tests. The default libvirt set looks like ./run --type libvirt --tests "unattended_install.import.import virsh_domname remove_guest.without_disk" # See all options ./run --help Autotest has useful and simple infrastructure for logging in to virtual machines and running commands in there. So for doing end to end tests like verifying hotplug succeeded or verifying snapshots actually worked it seems quite handy. It can also assemble a video based on screenshots of the guest, so you can rewatch an install failure or similar. A few misc things: - The default libvirt tests seem to work fine as non-root, though every libvirt test is marked as 'root only'. I'm not sure what the practical effect of that is. - If you interrupt the tests, you'll have to destroy and undefine the 'autotest-vm1' VM, or next run will fail. If the test suite completes, it will clean up after itself. All this should be fixed. - There are migration tests for libvirt, but I haven't looked at them. - All the tests run against system installed libvirt. You can probably get around this by sticking /path/to/libvirt.git/tools in PATH, but some tests want to restart libvirtd so it isn't that simple. - Running the tests creates ~/virt_test and moves the F17 image there. If you move other media there they can be used for various install tests. You can override this with VIRT_TEST_DATA_DIR or ./run --data-dir, but IMO there should be a ~/.autotestconfig or something. - qemu also has a basic set of smoke tests that test migration, no extra config required. A custom qemu binary can be used with ./run --qemu-bin. Probably useful even for libvirt devs that are tracking upstream qemu, if you suspect qemu.git may be currently be broken. The virt-test wiki also has much more useful info: https://github.com/autotest/virt-test/wiki Thanks, Cole

2 1