January 2014 - Devel - libvirt List Archives

Re: [libvirt] [PATCH 0/2] support compression with dumping guest memory
by Qiao Nuohan 28 Jan '14

28 Jan '14

Hello, Do you have some comments on this? On 01/21/2014 05:43 PM, qiaonuohan wrote: > --memory-only option is introduced without compression supported. Therefore, > this is a freature regression of virsh dump. This patchset is used to add > compression support in libvirt side and please refer the following address to > see the qemu side, the lastest version of qemu side v7(ready for comment now). > > http://lists.gnu.org/archive/html/qemu-devel/2014-01/msg02139.html > > qiaonuohan (2): > support compression when --memory-only option is specified > support configuring the format of dumping memory in qemu.conf > > include/libvirt/libvirt.h.in | 18 +++++++++---- > src/libvirt.c | 15 +++++++++++ > src/qemu/libvirtd_qemu.aug | 1 + > src/qemu/qemu.conf | 6 +++++ > src/qemu/qemu_conf.c | 2 ++ > src/qemu/qemu_conf.h | 1 + > src/qemu/qemu_driver.c | 52 +++++++++++++++++++++++++++++++++++--- > src/qemu/qemu_monitor.c | 6 ++--- > src/qemu/qemu_monitor.h | 3 ++- > src/qemu/qemu_monitor_json.c | 4 ++- > src/qemu/qemu_monitor_json.h | 3 ++- > src/qemu/test_libvirtd_qemu.aug.in | 1 + > tests/qemumonitorjsontest.c | 2 +- > tools/virsh-domain.c | 29 +++++++++++++++++++++ > 14 files changed, 127 insertions(+), 16 deletions(-) > -- Regards Qiao Nuohan

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[libvirt] [PATCH glib v2] Fix event loop implementation on win32
by Daniel P. Berrange 28 Jan '14

28 Jan '14

Libvirt uses gnulib for making winsock look like POSIX sockets. This means that in the libvirt event handle callbacks the application will be given a file descriptor rather than a winsock HANDLE object. The g_io_channel_unix_new method will detect that it is an FD and delegate to the g_io_channel_win32_new_fd method. Unfortunately the glib Win32 event loop impl is not very good at dealing with FD objects, simulating poll() by doing a read() on the FD :-( The API docs for g_io_channel_win32_new_fd say "All reads from the file descriptor should be done by this internal GLib thread. Your code should call only g_io_channel_read()." This isn't going to fly for libvirt, since it has zero knowledge of glib at all, so is just doing normal read(). Fortunately we can work around this problem by turning the FD we get from libvirt back into a HANDLE using the _get_osfhandle() method. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- libvirt-glib/libvirt-glib-event.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libvirt-glib/libvirt-glib-event.c b/libvirt-glib/libvirt-glib-event.c index 87019b5..1e1ffec 100644 --- a/libvirt-glib/libvirt-glib-event.c +++ b/libvirt-glib/libvirt-glib-event.c @@ -31,6 +31,10 @@ #include "libvirt-glib/libvirt-glib.h" +#ifdef G_OS_WIN32 +#include <io.h> +#endif + /** * SECTION:libvirt-glib-event * @short_description: Integrate libvirt with the GMain event framework @@ -164,7 +168,11 @@ gvir_event_handle_add(int fd, data->events = events; data->cb = cb; data->opaque = opaque; +#ifdef G_OS_WIN32 + data->channel = g_io_channel_win32_new_socket(_get_osfhandle(fd)); +#else data->channel = g_io_channel_unix_new(fd); +#endif data->ff = ff; g_debug("Add handle %p %d %d %d %p\n", data, data->watch, data->fd, events, data->opaque); -- 1.8.4.2

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[libvirt] [Question] About ivshmemory device and slot number confliction.
by Wangyufei (James) 28 Jan '14

28 Jan '14

Hello, I want to use ivshmemory device which is supported by qemu, but libvirt does not support it. So I use qemu:commandline to make ivshmemory device in qemu command pass-through. But then hot-plug a virtio-net device failed. The reason is that a qemu:commandline pci device's slot number is assigned by qemu not libvirt. And hot-plug device's slot is assigned by libvirt. So it failed beacause of slot confliction. I have two questions to ask: 1. Why libvirt does not support ivshmemory device? If libvirt intends to support it, when? 2. Can libvirt handle with qemu:commandline pci device's slot number? Just like pci:commandline to assign a slot number. what's your opinion? Best Regards, -WangYufei

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[libvirt] [PATCH 0/5] Fix deadlock in nwfilter code
by Daniel P. Berrange 28 Jan '14

28 Jan '14

Since we introduced fine grained locking into the QEMU driver so that VM start can run in parallel, we appear to have caused a race with the nwfilter code. In particular since we no longer hold the global QEMU driver lock for the duration of VM startup we have a lock ordering flaw. This results in deadlock when nwfilter operations happen in parallel with VM startup. This also affects the LXC driver. This patch series attempts to address the problem https://bugzilla.redhat.com/show_bug.cgi?id=929412 the removal of the windows thread impl isn't strictly required, I just didn't want to waste time creating a read/write lock impl for Windows threads. Daniel P. Berrange (5): Add a read/write lock implementation Remove windows thread implementation in favour of pthreads Push nwfilter update locking up to top level Add a mutex to serialize updates to firewall Turn nwfilter conf update mutex into a read/write lock configure.ac | 15 +- src/Makefile.am | 4 - src/conf/nwfilter_conf.c | 23 +- src/conf/nwfilter_conf.h | 3 +- src/libvirt_private.syms | 8 +- src/lxc/lxc_driver.c | 6 + src/nwfilter/nwfilter_driver.c | 12 +- src/nwfilter/nwfilter_gentech_driver.c | 21 +- src/nwfilter/nwfilter_gentech_driver.h | 2 +- src/qemu/qemu_driver.c | 6 + src/uml/uml_driver.c | 4 + src/util/virthread.c | 291 +++++++++++++++++++++++- src/util/virthread.h | 51 ++++- src/util/virthreadpthread.c | 278 ----------------------- src/util/virthreadpthread.h | 49 ---- src/util/virthreadwin32.c | 396 --------------------------------- src/util/virthreadwin32.h | 53 ----- 17 files changed, 395 insertions(+), 827 deletions(-) delete mode 100644 src/util/virthreadpthread.c delete mode 100644 src/util/virthreadpthread.h delete mode 100644 src/util/virthreadwin32.c delete mode 100644 src/util/virthreadwin32.h -- 1.8.4.2

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[libvirt] how nwfilter parse variable in xml file
by yue 28 Jan '14

28 Jan '14

hi,all we can define variable in nwfilter xml file, and assign value in domain xml . i add a new attribute , if the value is constant, it works . if it is variable, it will product wrong iptables rules. i want to know how libvirt process variable? where is the difference between processing constant and variable? when it is variable, if validator function is needed? thanks

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[libvirt] [PATCH 0/3] Enhance virnetdevbandwidthtest
by Michal Privoznik 27 Jan '14

27 Jan '14

As discussed with Eric, we may need slightly different approach. Michal Privoznik (3): virfile: Introduce virFileAppendStr virCommand: Introduce virCommandSetDryRun virnetdevbandwidthtest: Introduce testVirNetDevBandwidthSet src/libvirt_private.syms | 2 + src/util/vircommand.c | 59 ++++++++++++++++++++++++- src/util/vircommand.h | 2 + src/util/virfile.c | 48 +++++++++++++++++---- src/util/virfile.h | 2 + tests/virnetdevbandwidthtest.c | 98 ++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 201 insertions(+), 10 deletions(-) -- 1.8.5.2

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[libvirt] [PATCH RESEND V2 1/1] Add hw random number generator (/dev/hwrng) to cgroup ACL
by Pradipta Kr. Banerjee 27 Jan '14

27 Jan '14

From: "Pradipta Kr. Banerjee" <bpradip(a)in.ibm.com> Creating a qemu VM with /dev/hwrng as backend RNG device throws the following error - "Could not open '/dev/hwrng': Permission denied" This patch fixes the issue Signed-off-by: Pradipta Kr. Banerjee <bpradip(a)in.ibm.com> --- v2: Added acl code as part of per-VM cgroup setup src/qemu/qemu_cgroup.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index f0cacd0..8e2076e 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -533,6 +533,18 @@ qemuSetupDevicesCgroup(virQEMUDriverPtr driver, goto cleanup; } + if (vm->def->rng && + (vm->def->rng->backend == VIR_DOMAIN_RNG_BACKEND_RANDOM)) { + VIR_DEBUG("Setting Cgroup ACL for RNG device"); + rv = virCgroupAllowDevicePath(priv->cgroup, vm->def->rng->source.file, + VIR_CGROUP_DEVICE_RW); + virDomainAuditCgroupPath(vm, priv->cgroup, "allow", + vm->def->rng->source.file, "rw", rv == 0); + if (rv < 0 && + !virLastErrorIsSystemErrno(ENOENT)) + goto cleanup; + } + ret = 0; cleanup: virObjectUnref(cfg); -- 1.8.3.1

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[libvirt] [PATCH v3] qemu: Use virtio network device for aarch64/virt
by Oleg Strikov 27 Jan '14

27 Jan '14

This patch changes network device type used by default from rtl8139 to virtio when architecture type is aarch64 and machine type is virt. Qemu doesn't support any other machine types for aarch64 right now and we can't make any other aarch64-specific tuning in this function yet. Signed-off-by: Oleg Strikov <oleg.strikov(a)canonical.com> --- src/qemu/qemu_domain.c | 3 ++- .../qemuxml2argv-aarch64-virt-default-nic.args | 6 ++++++ .../qemuxml2argv-aarch64-virt-default-nic.xml | 22 ++++++++++++++++++++ tests/qemuxml2argvtest.c | 3 +++ 4 files changed, 33 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index c947e2e..a0e9a33 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -795,11 +795,12 @@ qemuDomainDefaultNetModel(const virDomainDef *def) { if (def->os.arch == VIR_ARCH_S390 || def->os.arch == VIR_ARCH_S390X) return "virtio"; - if (def->os.arch == VIR_ARCH_ARMV7L) { + if (def->os.arch == VIR_ARCH_ARMV7L || + def->os.arch == VIR_ARCH_AARCH64) { if (STREQ(def->os.machine, "versatilepb")) return "smc91c111"; if (STREQ(def->os.machine, "virt")) return "virtio"; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args new file mode 100644 index 0000000..d4d403b --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args @@ -0,0 +1,6 @@ +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \ +/usr/bin/qemu-system-aarch64 -S -M virt -m 1024 -smp 1 -nographic \ +-nodefconfig -nodefaults -monitor unix:/tmp/test-monitor,server,nowait \ +-boot c -kernel /aarch64.kernel -initrd /aarch64.initrd -append console=ttyAMA0 \ +-usb -device virtio-net-device,vlan=0,id=net0,mac=52:54:00:09:a4:37 \ +-net user,vlan=0,name=hostnet0 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml new file mode 100644 index 0000000..868de94 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml @@ -0,0 +1,22 @@ +<domain type="qemu"> + <name>aarch64-virt-default-nic</name> + <uuid>6ba410c5-1e5c-4d57-bee7-2228e7ffa32f</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>1</vcpu> + <features> + <acpi/> + </features> + <os> + <type arch="aarch64" machine="virt">hvm</type> + <kernel>/aarch64.kernel</kernel> + <initrd>/aarch64.initrd</initrd> + <cmdline>console=ttyAMA0</cmdline> + </os> + <devices> + <emulator>/usr/bin/qemu-system-aarch64</emulator> + <interface type='user'> + <mac address='52:54:00:09:a4:37'/> + </interface> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index a25264e..1a18ee2 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1316,10 +1316,13 @@ mymain(void) DO_TEST("aarch64-virt-virtio", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DTB, QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE_VIRTIO_MMIO, QEMU_CAPS_DEVICE_VIRTIO_RNG, QEMU_CAPS_OBJECT_RNG_RANDOM); + DO_TEST("aarch64-virt-default-nic", + QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG, + QEMU_CAPS_DEVICE_VIRTIO_MMIO); DO_TEST("kvm-pit-device", QEMU_CAPS_KVM_PIT_TICK_POLICY); DO_TEST("kvm-pit-delay", QEMU_CAPS_NO_KVM_PIT); DO_TEST("kvm-pit-device", QEMU_CAPS_NO_KVM_PIT, QEMU_CAPS_KVM_PIT_TICK_POLICY); -- 1.7.9.5

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[libvirt] [PATCH] BSD: implement virProcess{Get,Set}Affinity
by Roman Bogorodskiy 27 Jan '14

27 Jan '14

I guess commit message provides enough information, but I want to share some testing info. So, with qemu driver I get: virsh # vcpuinfo qemu VCPU: 0 CPU: 0 State: running CPU Affinity: yyyy virsh # Check the corresponding process using cpuset(1) tool from base system: > sudo cpuset -g -p 1308 pid 1308 mask: 0, 1, 2, 3 > virsh # vcpupin qemu --vcpu 0 --live 2,3 virsh # vcpuinfo qemu VCPU: 0 CPU: 0 State: running CPU Affinity: --yy virsh # Now cpuset(1) says: > sudo cpuset -g -p 1308 pid 1308 mask: 2, 3 > Now, do: > sudo cpuset -l 0-3 -p 1308 And check back again: virsh # vcpuinfo qemu VCPU: 0 CPU: 0 State: running CPU Affinity: yyyy virsh # Roman Bogorodskiy (1): BSD: implement virProcess{Get,Set}Affinity src/util/virprocess.c | 39 +++++++++++++++++++++++++++++++++------ 1 file changed, 33 insertions(+), 6 deletions(-) -- 1.8.4.3

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[libvirt] [PATCH v2] qemu: Use virtio network device for aarch64/virt
by Oleg Strikov 27 Jan '14

27 Jan '14

This patch changes network device type used by default from rtl8139 to virtio when architecture type is aarch64 and machine type is virt. Qemu doesn't support any other machine types for aarch64 right now and we can't make any other aarch64-specific tuning in this function yet. Signed-off-by: Oleg Strikov <oleg.strikov(a)canonical.com> --- src/qemu/qemu_domain.c | 3 ++- .../qemuxml2argv-aarch64-virt-default-nic.args | 6 ++++++ .../qemuxml2argv-aarch64-virt-default-nic.xml | 22 ++++++++++++++++++++ tests/qemuxml2argvtest.c | 3 +++ 4 files changed, 33 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index c947e2e..a0e9a33 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -795,11 +795,12 @@ qemuDomainDefaultNetModel(const virDomainDef *def) { if (def->os.arch == VIR_ARCH_S390 || def->os.arch == VIR_ARCH_S390X) return "virtio"; - if (def->os.arch == VIR_ARCH_ARMV7L) { + if (def->os.arch == VIR_ARCH_ARMV7L || + def->os.arch == VIR_ARCH_AARCH64) { if (STREQ(def->os.machine, "versatilepb")) return "smc91c111"; if (STREQ(def->os.machine, "virt")) return "virtio"; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args new file mode 100644 index 0000000..d4d403b --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.args @@ -0,0 +1,6 @@ +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \ +/usr/bin/qemu-system-aarch64 -S -M virt -m 1024 -smp 1 -nographic \ +-nodefconfig -nodefaults -monitor unix:/tmp/test-monitor,server,nowait \ +-boot c -kernel /aarch64.kernel -initrd /aarch64.initrd -append console=ttyAMA0 \ +-usb -device virtio-net-device,vlan=0,id=net0,mac=52:54:00:09:a4:37 \ +-net user,vlan=0,name=hostnet0 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml new file mode 100644 index 0000000..868de94 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-default-nic.xml @@ -0,0 +1,22 @@ +<domain type="qemu"> + <name>aarch64-virt-default-nic</name> + <uuid>6ba410c5-1e5c-4d57-bee7-2228e7ffa32f</uuid> + <memory>1048576</memory> + <currentMemory>1048576</currentMemory> + <vcpu>1</vcpu> + <features> + <acpi/> + </features> + <os> + <type arch="aarch64" machine="virt">hvm</type> + <kernel>/aarch64.kernel</kernel> + <initrd>/aarch64.initrd</initrd> + <cmdline>console=ttyAMA0</cmdline> + </os> + <devices> + <emulator>/usr/bin/qemu-system-aarch64</emulator> + <interface type='user'> + <mac address='52:54:00:09:a4:37'/> + </interface> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index a25264e..1a18ee2 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1316,10 +1316,13 @@ mymain(void) DO_TEST("aarch64-virt-virtio", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DTB, QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE_VIRTIO_MMIO, QEMU_CAPS_DEVICE_VIRTIO_RNG, QEMU_CAPS_OBJECT_RNG_RANDOM); + DO_TEST("aarch64-virt-default-nic", + QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG, + QEMU_CAPS_DEVICE_VIRTIO_MMIO); DO_TEST("kvm-pit-device", QEMU_CAPS_KVM_PIT_TICK_POLICY); DO_TEST("kvm-pit-delay", QEMU_CAPS_NO_KVM_PIT); DO_TEST("kvm-pit-device", QEMU_CAPS_NO_KVM_PIT, QEMU_CAPS_KVM_PIT_TICK_POLICY); -- 1.7.9.5

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