July 2012 - Devel - libvirt List Archives

[libvirt] [test-API][PATCH 1/2] Fix the undefined local variable problem in remote_exec
by Wayne Sun 01 Aug '12

01 Aug '12

* subproc_flag should be global when used between functions * print error msg when exception happened Signed-off-by: Wayne Sun <gsun(a)redhat.com> --- utils/utils.py | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/utils/utils.py b/utils/utils.py index 455e9cf..be87cdc 100644 --- a/utils/utils.py +++ b/utils/utils.py @@ -32,6 +32,8 @@ import subprocess from xml.dom import minidom from urlparse import urlparse +subproc_flag = 0 + def get_hypervisor(): if commands.getoutput("lsmod | grep kvm"): return 'kvm' @@ -439,10 +441,12 @@ def support_virt(self): return True def subproc(a, b): + global subproc_flag subproc_flag = 1 def remote_exec(hostname, username, password, cmd): """Remote execution on specified host""" + global subproc_flag pid, fd = pty.fork() if pid == 0: try: @@ -479,6 +483,7 @@ def remote_exec(hostname, username, password, cmd): subproc_flag = 0 return ret except Exception, e: + print e subproc_flag = 0 return -1 -- 1.7.1

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[libvirt] [PATCH v2 0/5] Introduce API for dumping domain IP addresses
by Michal Privoznik 01 Aug '12

01 Aug '12

This feature has been requested for a very long time. However, we had to wait for guest agent to obtain reliable results as user might create totally different structure of interfaces than seen from outside (e.g. bonding, virtual interfaces, etc.). That's the main reason why sniffing for domain traffic can return bogus results. Fortunately, qemu guest agent implement requested part for a while so nothing holds us back anymore. To make matters worse, guest OS can assign whatever name to an interface and changing MAC inside guest isn't propagated to the host which in the end see original one. Therefore, finding correlation between interface within guest and the host side end is left as exercise for mgmt applications. This API is called virDomainGetInterfacesAddresses (okay, maybe too many plurals) and returns a XML document containing all interesting data. diff to v1: -switch from struct to XML doc Michal Privoznik (5): Introduce virDomainGetInterfacesAddresses API virsh: Expose virDomainGetInterfacesAddresses qemu_agent: Implement 'guest-network-get-interfaces' command handling qemu: Implement virDomainInterfacesAddresses python: create example for dumping domain IP addresses docs/schemas/interfaces.rng | 57 +++++++++++++++++ examples/python/Makefile.am | 2 +- examples/python/README | 1 + examples/python/domipaddrs.py | 62 +++++++++++++++++++ include/libvirt/libvirt.h.in | 2 + src/driver.h | 4 + src/libvirt.c | 49 +++++++++++++++ src/libvirt_public.syms | 1 + src/qemu/qemu_agent.c | 135 +++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_agent.h | 2 + src/qemu/qemu_driver.c | 68 +++++++++++++++++++++ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 12 +++- src/remote_protocol-structs | 8 +++ tools/virsh.c | 41 ++++++++++++ tools/virsh.pod | 9 +++ 16 files changed, 452 insertions(+), 2 deletions(-) create mode 100644 docs/schemas/interfaces.rng create mode 100644 examples/python/domipaddrs.py -- 1.7.8.5

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[libvirt] [Patch v2 0/3] Add QEMU network helper support
by rmarwah＠linux.vnet.ibm.com 31 Jul '12

31 Jul '12

From: Richa Marwaha <rmarwah(a)linux.vnet.ibm.com> QEMU has a new feature which allows QEMU to execute under an unprivileged user ID and still be able to add a tap device to a Linux network bridge. Below is the link to the QEMU patches for the bridge helper feature: http://lists.gnu.org/archive/html/qemu-devel/2012-01/msg03562.html The existing libvirt tap network device support for adding a tap device to a bridge (-netdev tap) works only when connected to a libvirtd instance running as the privileged system account 'root'. When connected to a libvirtd instance running as an unprivileged user (ie. using the session URI) creation of the tap device fails as follows: error: Failed to start domain F14_64 error: Unable to create tap device vnet%d: Operation not permitted With this support, creating a tap device in the above scenario will be possible. Additionally, hot attaching a tap device to a bridge while running when connected to a libvirtd instance running as an unprivileged user will be possible. Richa Marwaha (3): Add -netdev bridge capabilities Add -netdev bridge support apparmor: QEMU bridge helper policy updates examples/apparmor/libvirt-qemu | 21 +++++++++++++- src/qemu/qemu_capabilities.c | 13 ++++++-- src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 61 ++++++++++++++++++++++++++++----------- src/qemu/qemu_command.h | 2 + src/qemu/qemu_hotplug.c | 31 ++++++++++++++------ 6 files changed, 97 insertions(+), 32 deletions(-)

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[libvirt] [PATCH] qemu: fix use after free
by Eric Blake 31 Jul '12

31 Jul '12

Detected by Coverity. * src/qemu/qemu_hotplug.c (qemuDomainAttachHostDevice): Avoid double free of usb on failure. --- src/qemu/qemu_hotplug.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index ba841e9..ceffe22 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1170,6 +1170,7 @@ int qemuDomainAttachHostDevice(struct qemud_driver *driver, if (usbDeviceListAdd(list, usb) < 0) { usbFreeDevice(usb); + usb = NULL: goto cleanup; } -- 1.7.11.2

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[libvirt] [QEMU PATCH 0/3] versioned CPU models / per-machine-type aliases
by Eduardo Habkost 31 Jul '12

31 Jul '12

Hi, This is the first try at a simple system to make the CPU model definitions versioned (to allow them to get bug fixes while allowing migration from older versions and keeping command-line compatibility), and per- machine-type aliases for compatibility. The lack of CPU model versioning is blocking multiple bug fixes that are necessary on CPU model definitions, but can't be included today because they would break migration. Later, after this gets in (or at least gets some feedback), I plan to send a proposal for a machine-friendly CPU feature / CPU model probing interface that libvirt could use. Eduardo Habkost (3): vl.c: extract qemu_machine_init() function per-machine-type CPU model alias system x86: pc: versioned CPU model names & compatibility aliases hw/boards.h | 13 +++++++++ hw/pc_piix.c | 56 ++++++++++++++++++++++++++++++++++++ sysconfigs/target/cpus-x86_64.conf | 18 ++++++------ vl.c | 28 +++++++++++++++++- 4 files changed, 105 insertions(+), 10 deletions(-) -- 1.7.10.4

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[libvirt] [PATCH][TCK] Add listen type for graphic
by Kyla Zhang 31 Jul '12

31 Jul '12

For default domain build there is no graphic listen type so it will report error. This patch will fix it with adding default type with "address" --- lib/Sys/Virt/TCK/DomainBuilder.pm | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/lib/Sys/Virt/TCK/DomainBuilder.pm b/lib/Sys/Virt/TCK/DomainBuilder.pm index dfd988e..dbfb65f 100644 --- a/lib/Sys/Virt/TCK/DomainBuilder.pm +++ b/lib/Sys/Virt/TCK/DomainBuilder.pm @@ -460,7 +460,8 @@ sub as_xml { $w->emptyTag("autoport", autoport => $graphic->{autoport}); $w->emptyTag("listen", - listen => $graphic->{listen}); + listen => $graphic->{listen}, + $graphic->{listen_type} ? (type => $graphic->{listen_type}) : type => "address"); $w->emptyTag("keymap", keymap => $graphic->{keymap}); $w->endTag("graphics"); -- 1.7.1

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[libvirt] Question about pci-passthrough
by Shradha Shah 31 Jul '12

31 Jul '12

Hello All, I had a question about pci-passthrough using hostdev mode in Libvirt. When I assign hostdev->parent.type = VIR_DOMAIN_DEVICE_NET, the hostdev is passed into the guest and acts as a network device. When I assign hostdev->parent.type = VIR_DOMAIN_DEVICE_NONE, the hostdev is passed into the guest and acts as a PCI Host device. Please can someone point me to the part of code in libvirt where this decision is made based on hostdev->parent.type? -- Many Thanks, Regards, Shradha Shah

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[libvirt] [PATCH v2 1/3] conf: Format numatune XML correctly while placement is none
by Osier Yang 31 Jul '12

31 Jul '12

setNumaParameters tunes the numa setting using cgroup, it's another entry except libnuma/numad for numa tuning. And it doesn't set the placement, and further more, the formating codes doesn't take this into consideration. How to reproduce: conn = libvirt.open(None) dom = conn.lookupByName('linux') param = {'numa_nodeset': '0', 'numa_mode': 1} dom.setNumaParameters(param, 2) % virsh start linux error: Failed to start domain rhel6.3rc error: (domain_definition):8: error parsing attribute name <memory mode='preferred' </numatune> -------------------------------^ --- src/conf/domain_conf.c | 17 ++++++++++------- 1 files changed, 10 insertions(+), 7 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 81c6308..c44d89d 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -12795,23 +12795,26 @@ virDomainDefFormatInternal(virDomainDefPtr def, const char *placement; mode = virDomainNumatuneMemModeTypeToString(def->numatune.memory.mode); - virBufferAsprintf(buf, " <memory mode='%s' ", mode); + virBufferAsprintf(buf, " <memory mode='%s'", mode); - if (def->numatune.memory.placement_mode == - VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC) { + if (def->numatune.memory.nodemask) { nodemask = virDomainCpuSetFormat(def->numatune.memory.nodemask, - VIR_DOMAIN_CPUMASK_LEN); + VIR_DOMAIN_CPUMASK_LEN); if (nodemask == NULL) { virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("failed to format nodeset for " "NUMA memory tuning")); goto cleanup; } - virBufferAsprintf(buf, "nodeset='%s'/>\n", nodemask); + virBufferAsprintf(buf, " nodeset='%s'/>\n", nodemask); VIR_FREE(nodemask); - } else if (def->numatune.memory.placement_mode) { + } else if (def->numatune.memory.placement_mode == + VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO) { placement = virDomainNumatuneMemPlacementModeTypeToString(def->numatune.memory.placement_mode); - virBufferAsprintf(buf, "placement='%s'/>\n", placement); + virBufferAsprintf(buf, " placement='%s'/>\n", placement); + } else { + /* Should not hit here. */ + virBufferAddLit(buf, "/>\n"); } virBufferAddLit(buf, " </numatune>\n"); } -- 1.7.7.3

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[libvirt] [PATCH] build: distribute virsh related source files
by Guannan Ren 31 Jul '12

31 Jul '12

In virsh.c, it includes multiple virsh source files, we need to have them distributed. --- tools/Makefile.am | 13 +++++++++++-- 1 files changed, 11 insertions(+), 2 deletions(-) diff --git a/tools/Makefile.am b/tools/Makefile.am index 723db8e..7c048b2 100644 --- a/tools/Makefile.am +++ b/tools/Makefile.am @@ -25,8 +25,17 @@ EXTRA_DIST = \ virt-sanlock-cleanup.in \ virt-sanlock-cleanup.8 \ virsh.pod \ - libvirt-guests.sysconf \ - virsh-edit.c + libvirt-guests.sysconf \ + virsh-edit.c \ + virsh-domain.c \ + virsh-domain-monitor.c \ + virsh-host.c virsh-interface.c \ + virsh-network.c virsh-nodedev.c \ + virsh-nwfilter.c virsh-pool.c \ + virsh-secret.c virsh-snapshot.c \ + virsh-volume.c + + DISTCLEANFILES = -- 1.7.7.6

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[libvirt] [PATCH] build: fix build without HAVE_CAPNG
by Eric Blake 30 Jul '12

30 Jul '12

Otherwise, a build may fail with: lxc/lxc_conatiner.c: In function 'lxcContainerDropCapabilities': lxc/lxc_container.c:1662:46: error: unused parameter 'keepReboot' [-Werror=unused-parameter] * src/lxc/lxc_container.c (lxcContainerDropCapabilities): Mark parameter unused. --- Pushing under the build-breaker rule. src/lxc/lxc_container.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c index 6043b00..f3a4622 100644 --- a/src/lxc/lxc_container.c +++ b/src/lxc/lxc_container.c @@ -1659,7 +1659,7 @@ static int lxcContainerSetupMounts(virDomainDefPtr vmDef, * It removes some capabilities that could be dangerous to * host system, since they are not currently "containerized" */ -static int lxcContainerDropCapabilities(bool keepReboot) +static int lxcContainerDropCapabilities(bool keepReboot ATTRIBUTE_UNUSED) { #if HAVE_CAPNG int ret; -- 1.7.11.2

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