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[libvirt] [PATCH] qemu: get VM's ip address from the output of arp command
by Chen Hanxiao 25 Jan '18

25 Jan '18

From: Chen Hanxiao <chenhanxiao(a)gmail.com> Introduce VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP to get ip address of VM from the output of `arp -an` command. We can use: domifaddr f26-cloud --source arp to get the address. Signed-off-by: Chen Hanxiao <chenhanxiao(a)gmail.com> --- include/libvirt/libvirt-domain.h | 1 + src/qemu/qemu_driver.c | 102 +++++++++++++++++++++++++++++++++++++++ tools/virsh-domain-monitor.c | 2 + 3 files changed, 105 insertions(+) diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h index 4048acf38..38e2d9a3e 100644 --- a/include/libvirt/libvirt-domain.h +++ b/include/libvirt/libvirt-domain.h @@ -4665,6 +4665,7 @@ typedef virMemoryParameter *virMemoryParameterPtr; typedef enum { VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE = 0, /* Parse DHCP lease file */ VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT = 1, /* Query qemu guest agent */ + VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP = 2, /* Query ARP tables */ # ifdef VIR_ENUM_SENTINELS VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LAST diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index a203c9297..5aaf69442 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -160,6 +160,9 @@ static int qemuGetDHCPInterfaces(virDomainPtr dom, virDomainObjPtr vm, virDomainInterfacePtr **ifaces); +static int qemuARPGetInterfaces(virDomainObjPtr vm, + virDomainInterfacePtr **ifaces); + static virQEMUDriverPtr qemu_driver; @@ -20384,6 +20387,10 @@ qemuDomainInterfaceAddresses(virDomainPtr dom, break; + case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP: + ret = qemuARPGetInterfaces(vm, ifaces); + break; + default: virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, _("Unknown IP address data source %d"), @@ -20494,6 +20501,101 @@ qemuGetDHCPInterfaces(virDomainPtr dom, } +static int +qemuARPGetInterfaces(virDomainObjPtr vm, + virDomainInterfacePtr **ifaces) +{ + size_t i, j; + size_t ifaces_count = 0; + int ret = -1; + char macaddr[VIR_MAC_STRING_BUFLEN]; + virDomainInterfacePtr *ifaces_ret = NULL; + virDomainInterfacePtr iface = NULL; + virCommandPtr cmd = NULL; + char *outbuf; + char **lines = NULL; + char **matches = NULL; +#define ARP_CMD "/usr/sbin/arp" + + if (!(cmd = virCommandNewArgList(ARP_CMD, + "-an", + NULL))) + goto cleanup; + + virCommandSetOutputBuffer(cmd, &outbuf); + + if (virCommandRun(cmd, NULL) < 0) + goto cleanup; + + lines = virStringSplit(outbuf, "\n", 0); + if (lines == NULL) + goto cleanup; + + for (i = 0; i < vm->def->nnets; i++) { + if (vm->def->nets[i]->type != VIR_DOMAIN_NET_TYPE_NETWORK) + continue; + + virMacAddrFormat(&(vm->def->nets[i]->mac), macaddr); + + if (strstr(outbuf, macaddr)) { + for (j = 0; lines[j]; j++) { + const char *line = lines[j]; + if (line == NULL) + break; + if (strstr(line, macaddr) && + virStringSearch(line, "\\b([0-9]{1,3}\\.){3}[0-9]{1,3}\\b", + 1, &matches) == 1) { + + if (VIR_EXPAND_N(ifaces_ret, ifaces_count, 1) < 0) + goto error; + + if (VIR_ALLOC(ifaces_ret[ifaces_count - 1]) < 0) + goto error; + + iface = ifaces_ret[ifaces_count - 1]; + iface->naddrs = 1; + if (VIR_ALLOC_N(iface->addrs, iface->naddrs) < 0) + goto error; + + if (VIR_STRDUP(iface->name, vm->def->nets[i]->ifname) < 0) + goto cleanup; + + if (VIR_STRDUP(iface->hwaddr, macaddr) < 0) + goto cleanup; + + if (VIR_STRDUP(iface->addrs->addr, matches[0]) < 0) + goto cleanup; + } + } + } else { + VIR_DEBUG("Got nothing"); + continue; + } + } + + *ifaces = ifaces_ret; + ifaces_ret = NULL; + ret = ifaces_count; + + cleanup: + virCommandFree(cmd); + VIR_FREE(outbuf); + virStringListFree(lines); + virStringListFree(matches); + cmd = NULL; + return ret; + + error: + if (ifaces_ret) { + for (i = 0; i < ifaces_count; i++) + virDomainInterfaceFree(ifaces_ret[i]); + } + VIR_FREE(ifaces_ret); + + goto cleanup; +} + + static int qemuDomainSetUserPassword(virDomainPtr dom, const char *user, diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c index 32a42707e..68da11ed5 100644 --- a/tools/virsh-domain-monitor.c +++ b/tools/virsh-domain-monitor.c @@ -2190,6 +2190,8 @@ cmdDomIfAddr(vshControl *ctl, const vshCmd *cmd) source = VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE; } else if (STREQ(sourcestr, "agent")) { source = VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT; + } else if (STREQ(sourcestr, "arp")) { + source = VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP; } else { vshError(ctl, _("Unknown data source '%s'"), sourcestr); goto cleanup; -- 2.14.3

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[libvirt] [PATCH] libxl: add explicit linkage to xenstore library
by Daniel P. Berrange 24 Jan '18

24 Jan '18

The libxl driver calls a couple of xenstorage APIs, so it must explicitly link to this library rather than rely on indirect linkage via libxl or other xen libraries. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- m4/virt-driver-libxl.m4 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/m4/virt-driver-libxl.m4 b/m4/virt-driver-libxl.m4 index e6dbfef686..2cc1c062d8 100644 --- a/m4/virt-driver-libxl.m4 +++ b/m4/virt-driver-libxl.m4 @@ -75,9 +75,9 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [ dnl (since Xen 4.7) if not then assume it is in libxenctrl dnl (as it was for 4.6 and earler) AC_CHECK_LIB([xentoollog], [xtl_createlogger_stdiostream], [ - LIBXL_LIBS="$LIBXL_LIBS -lxentoollog" + LIBXL_LIBS="$LIBXL_LIBS -lxenstore -lxentoollog" ],[ - LIBXL_LIBS="$LIBXL_LIBS -lxenctrl" + LIBXL_LIBS="$LIBXL_LIBS -lxenstore -lxenctrl" ]) dnl Check if libxl_domain_config_from_json is available for domXML to -- 2.14.3

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[libvirt] [PATCH 0/8] virsh: Introduce more completers
by Michal Privoznik 24 Jan '18

24 Jan '18

It'd be nice if we could autocomplete the basic types like pools, volumes, networks, ... before the release. Michal Privoznik (8): virsh: Introduce virshStoragePoolNameCompleter virsh: Introduce virshStorageVolNameCompleter virsh: Introduce virshInterfaceNameCompleter virsh: Introduce virshNetworkNameCompleter virsh: Introduce virshNodeDeviceNameCompleter virsh: Introduce virshNWFilterNameCompleter virsh: Introduce virshSecretUUIDCompleter virsh: Introduce virshSnapshotNameCompleter tools/virsh-completer.c | 388 ++++++++++++++++++++++++++++++++++++++++++++++++ tools/virsh-completer.h | 32 ++++ tools/virsh-interface.c | 16 +- tools/virsh-network.c | 24 +-- tools/virsh-nodedev.c | 16 +- tools/virsh-nwfilter.c | 9 +- tools/virsh-pool.c | 28 ++-- tools/virsh-secret.c | 15 +- tools/virsh-snapshot.c | 21 ++- tools/virsh-volume.c | 45 +++--- tools/virsh.h | 6 +- 11 files changed, 525 insertions(+), 75 deletions(-) -- 2.13.6

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[libvirt] Libvirt fails to apply security context to fd/node to USB device
by Randy Aybar 23 Jan '18

23 Jan '18

Hi, I'm attempting to attach and expose a USB device (WiFi adapter for testing) to an LXC container with SELinux enabled. But when enabling the XML snippet, the container fails to start with this error: 2018-01-12 19:24:31.914+0000: 2181: error : virSecuritySELinuxSetFileconHelper:1182 : unable to set security context 'system_u:object_r:svirt_sandbox_file_t:s0:c139,c284' on '//var/run/libvirt/lxc/lxc_0.dev/bus/usb//dev/bus/usb/002/002': No such file or directory Failure in libvirt_lxc startup: unable to set security context 'system_u:object_r:svirt_sandbox_file_t:s0:c139,c284' on '//var/run/libvirt/lxc/lxc_0.dev/bus/usb//dev/bus/usb/002/002': No such file or directory The XML snippet for attaching USB device: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x05ac'/> <product id='0x1006'/> </source> <address type='usb' bus='2' port='2'/> </hostdev> SELinux snippet (using the dynamic label for the moment): <seclabel type='dynamic' model='selinux' relabel='yes'/> Running it on CentOS 7.2 and I've tried the distro from the package manager (1.3.3.3), as well as downloaded and compiled the latest stable from libvirt.org (3.10?) and came to the same error each time. Did a small dive into the code after realizing that the path just doesn't seem right. Path (seems to have an unusual and incorrect concatenation of folders) : //var/run/libvirt/lxc/lxc_0.dev/bus/usb//dev/bus/usb/002/002 "vroot" seems to be declared by the LXC controller (src/lxc/lxc_controller.c) as such: if (virAsprintf(&vroot, "/%s/%s.dev/bus/usb/", LXC_STATE_DIR, vmDef->name) < 0) goto cleanup; Then upon setting up security for all of the container's attached devices, we call virUSBDeviceNew to setup the attached USB device and give us the path to apply a context to. Since vroot is present, we get this weird path when running through this (src/util/virusb.c): if (virAsprintf(&dev->path, "%s" USB_DEVFS "%03d/%03d", vroot ? vroot : "", dev->bus, dev->dev) < 0) { virUSBDeviceFree(dev); return NULL; } Note: # define USB_DEVFS "/dev/bus/usb/" Should we just be blindly appending this definition if vroot is present, making the path incorrect? If this isn't a bug, I propose the following change: if (virAsprintf(&dev->path, "%s" "%03d/%03d", vroot ? vroot : USB_DEVFS, dev->bus, dev->dev) < 0) { virUSBDeviceFree(dev); return NULL; } Would kindly appreciate any feedback on whether this is a bug or maybe I'm missing something and is the reason why it's written this way. Thanks, Randy

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[libvirt] [PATCH 0/9] Yet another version of CAT stuff (no idea about the version number)
by Martin Kletzander 23 Jan '18

23 Jan '18

Added stuff that Pavel wanted, removed some testcases that I still have in my repo, but it's way to complicated to add properly, so for now I would just go with this and manual testing of starting some domains. I got no hardware to test this on, currently, so some testing is needed before pushing this. @Eli: Can you help with the testing? Martin Kletzander (9): Rename virResctrlInfo to virResctrlInfoPerCache util: Add virResctrlInfo conf: Use virResctrlInfo in capabilities util: Remove now-unneeded resctrl functions resctrl: Add functions to work with resctrl allocations conf: Add support for cputune/cachetune tests: Add virresctrltest qemu: Add support for resctrl docs: Add CAT (resctrl) support into news.xml docs/formatdomain.html.in | 54 + docs/news.xml | 9 + docs/schemas/domaincommon.rng | 32 + po/POTFILES.in | 1 + src/Makefile.am | 2 +- src/conf/capabilities.c | 55 +- src/conf/capabilities.h | 4 +- src/conf/domain_conf.c | 251 ++++ src/conf/domain_conf.h | 13 + src/libvirt_private.syms | 16 +- src/qemu/qemu_process.c | 61 +- src/util/virresctrl.c | 1380 ++++++++++++++++++-- src/util/virresctrl.h | 86 +- src/util/virresctrlpriv.h | 27 + tests/Makefile.am | 8 +- tests/genericxml2xmlindata/cachetune-cdp.xml | 36 + .../cachetune-colliding-allocs.xml | 30 + .../cachetune-colliding-tunes.xml | 32 + .../cachetune-colliding-types.xml | 30 + tests/genericxml2xmlindata/cachetune-small.xml | 29 + tests/genericxml2xmlindata/cachetune.xml | 33 + tests/genericxml2xmltest.c | 10 + tests/virresctrldata/resctrl-cdp.schemata | 2 + .../virresctrldata/resctrl-skx-twocaches.schemata | 1 + tests/virresctrldata/resctrl-skx.schemata | 1 + tests/virresctrldata/resctrl.schemata | 1 + tests/virresctrltest.c | 102 ++ 27 files changed, 2174 insertions(+), 132 deletions(-) create mode 100644 src/util/virresctrlpriv.h create mode 100644 tests/genericxml2xmlindata/cachetune-cdp.xml create mode 100644 tests/genericxml2xmlindata/cachetune-colliding-allocs.xml create mode 100644 tests/genericxml2xmlindata/cachetune-colliding-tunes.xml create mode 100644 tests/genericxml2xmlindata/cachetune-colliding-types.xml create mode 100644 tests/genericxml2xmlindata/cachetune-small.xml create mode 100644 tests/genericxml2xmlindata/cachetune.xml create mode 100644 tests/virresctrldata/resctrl-cdp.schemata create mode 100644 tests/virresctrldata/resctrl-skx-twocaches.schemata create mode 100644 tests/virresctrldata/resctrl-skx.schemata create mode 100644 tests/virresctrldata/resctrl.schemata create mode 100644 tests/virresctrltest.c -- 2.15.1

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[libvirt] [dbus PATCH v2] main: add support for all usable libvirt drivers
by Pavel Hrdina 23 Jan '18

23 Jan '18

Some of the drivers are remote only, such as ESX, GSX, VPX, PHyp and HyperV. Currently we support only local drivers. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com> --- src/main.c | 21 +++++++++++++++++---- test/libvirttest.py | 2 +- 2 files changed, 18 insertions(+), 5 deletions(-) diff --git a/src/main.c b/src/main.c index ab03bc1..32c1cc4 100644 --- a/src/main.c +++ b/src/main.c @@ -85,13 +85,26 @@ struct virtDBusDriver { }; static const struct virtDBusDriver sessionDrivers[] = { - { "qemu:///session", "/org/libvirt/qemu" }, - { "test:///default", "/org/libvirt/test" }, + { "qemu:///session", "/org/libvirt/QEMU" }, + { "test:///default", "/org/libvirt/Test" }, + { "uml:///session", "/org/libvirt/UML" }, + { "vbox:///session", "/org/libvirt/VBox" }, + { "vmwarefusion:///session", "/org/libvirt/VMwareFusion" }, + { "vmwareplayer:///session", "/org/libvirt/VMwarePlayer" }, + { "vmwarews:///session", "/org/libvirt/VMwareWS" }, }; static const struct virtDBusDriver systemDrivers[] = { - { "qemu:///system", "/org/libvirt/qemu" }, - { "test:///default", "/org/libvirt/test" }, + { "XenApi://localhost/", "/org/libvirt/XenAPI" }, + { "bhyve:///system", "/org/libvirt/BHyve" }, + { "lxc:///", "/org/libvirt/LXC" }, + { "openvz:///system", "/org/libvirt/OpenVZ" }, + { "qemu:///system", "/org/libvirt/QEMU" }, + { "test:///default", "/org/libvirt/Test" }, + { "uml:///system", "/org/libvirt/UML" }, + { "vbox:///system", "/org/libvirt/VBox" }, + { "vz:///system", "/org/libvirt/VZ" }, + { "xen:///", "/org/libvirt/Xen" }, }; int diff --git a/test/libvirttest.py b/test/libvirttest.py index 579485f..6a00aea 100644 --- a/test/libvirttest.py +++ b/test/libvirttest.py @@ -38,7 +38,7 @@ class TestCase(unittest.TestCase): else: raise TimeoutError('error starting libvirt-dbus') - obj = self.bus.get_object('org.libvirt', '/org/libvirt/test') + obj = self.bus.get_object('org.libvirt', '/org/libvirt/Test') self.connect = dbus.Interface(obj, 'org.libvirt.Connect') def tearDown(self): -- 2.14.3

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[libvirt] [dbus RFC 00/11] improve libvirt connections handling
by Pavel Hrdina 23 Jan '18

23 Jan '18

This patch series is a proposal to how to implement libvirt connections in the libvirt D-Bus binding. The design is based on a discussion with Daniel and it should follow D-Bus convention. Each connection is represented as existing object where the object path contains the driver name: /org/libvirt/qemu and there is no need to call any connect API but simply use the existing object directly to operate with that connection. This patch series also implements strict difference between system and user bus. On the user bus only drivers with session capability are available and on the system bus only drivers with system capability are available. Pavel Hrdina (11): util: introduce VIRT_ARRAY_CARDINALITY macro util: introduce virtDBusUtilSetError helper src: rename manager to connect connect: implement lazy connection connect: don't use default libvirt authentication callback connect: implement reconnect functionality to libvirt connect: move domain related code to domain.c connect: store connect path in connect structure domain: derive domain path from connect path main: implement multiple connection within one daemon main: add support for all libvirt drivers src/Makefile.am | 2 +- src/connect.c | 308 ++++++++++++++++++++++++++++++ src/connect.h | 27 +++ src/domain.c | 131 ++++++++----- src/domain.h | 4 +- src/events.c | 64 +++---- src/events.h | 4 +- src/main.c | 75 ++++++-- src/manager.c | 216 --------------------- src/manager.h | 20 -- src/util.c | 17 +- src/util.h | 12 +- test/Makefile.am | 2 +- test/libvirttest.py | 6 +- test/{test_manager.py => test_connect.py} | 12 +- test/test_domain.py | 6 +- 16 files changed, 543 insertions(+), 363 deletions(-) create mode 100644 src/connect.c create mode 100644 src/connect.h delete mode 100644 src/manager.c delete mode 100644 src/manager.h rename test/{test_manager.py => test_connect.py} (79%) -- 2.14.3

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[libvirt] [PATCH] docs: formatdomain: Document the CPU feature 'name' attribute
by Kashyap Chamarthy 23 Jan '18

23 Jan '18

Currently, the CPU feature 'name' XML attribute, as in: [...] <cpu match='exact'> <model fallback='forbid'>IvyBridge</model> <vendor>Intel</vendor> <feature policy='require' name='pcid'/> </cpu> [...] isn't explicitly documented in formatdomain.html. Document it now. Signed-off-by: Kashyap Chamarthy <kchamart(a)redhat.com> --- docs/formatdomain.html.in | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index d272cc1ba..e717fb3aa 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1454,6 +1454,23 @@ <span class="since">Since 0.8.5</span> the <code>policy</code> attribute can be omitted and will default to <code>require</code>. + + Individual CPU feature names can be specified as part of the + <code>name</code> attribute. The list of known CPU feature + names (e.g. 'vmx', 'cmt', et cetera) can be found in the same + file as CPU models -- <code>cpu_map.xml</code>. For example, + to explicitly specify the 'pcid' feature with Intel IvyBridge + CPU model: + +<pre> +... +<cpu match='exact'> + <model fallback='forbid'>IvyBridge</model> + <vendor>Intel</vendor> + <feature policy='require' name='pcid'/> +</cpu> +...</pre> + </dd> <dt><code>cache</code></dt> -- 2.13.6

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[libvirt] a libvirt event question
by Chen, Xiaogang 23 Jan '18

23 Jan '18

Hello: We are adding libvirt functions to launch SEV VM. When start VM I put it at "pause" state. During that time qemu sends an event "sev_measurement". We hope libvirtd get this event before we resume VM. But I did not see libvirtd receive it. If I send this event at qemu during resume time libvirtd can get this event successfully. I traced qemuMonitorJSONIOProcessEvent function for events received, did not see any event coming before resume VM. Is there something I missed to get this event during pause state? Thank you for your help. Regards Xiaogang

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[libvirt] [PATCH v3] libvirtd: clarify the TLS conf default value setting
by Chen Hanxiao 22 Jan '18

22 Jan '18

From: Chen Hanxiao <chenhanxiao(a)gmail.com> Provide more details related to the requirement that setting one of the values requires setting all of them. Signed-off-by: Chen Hanxiao <chenhanxiao(a)gmail.com> --- v3: description updated follow John's comments v2: fix a typo daemon/libvirtd.conf | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/daemon/libvirtd.conf b/daemon/libvirtd.conf index 8e0c0d96d..91b3f47de 100644 --- a/daemon/libvirtd.conf +++ b/daemon/libvirtd.conf @@ -182,6 +182,20 @@ # TLS x509 certificate configuration # +# Use of TLS requires that x509 certificates be issued. The default locations +# for the certificate files is as follows: +# +# /etc/pki/CA/cacert.pem - The CA master certificate +# /etc/pki/libvirt/servercert.pem - The server certificate signed with +# the cacert.pem +# /etc/pki/libvirt/private/serverkey.pem - The server private key +# +# It is possible to override the default locations by altering the 'key_file', +# 'cert_file', and 'ca_file' values and uncommenting them below. +# +# NB, overriding the default of one location requires uncommenting and +# possibly additionally overriding the other settings. +# # Override the default server key file path # -- 2.14.3

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