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[libvirt] [libvirt-glib] Add gvir_domain_get_saved()
by Zeeshan Ali (Khattak) 17 Feb '12

17 Feb '12

From: "Zeeshan Ali (Khattak)" <zeeshanak(a)gnome.org> Binding for virDomainHasManagedSaveImage(). --- libvirt-gobject/libvirt-gobject-domain.c | 13 +++++++++++++ libvirt-gobject/libvirt-gobject-domain.h | 1 + libvirt-gobject/libvirt-gobject.sym | 1 + 3 files changed, 15 insertions(+), 0 deletions(-) diff --git a/libvirt-gobject/libvirt-gobject-domain.c b/libvirt-gobject/libvirt-gobject-domain.c index d9e4c00..5f26dcd 100644 --- a/libvirt-gobject/libvirt-gobject-domain.c +++ b/libvirt-gobject/libvirt-gobject-domain.c @@ -854,3 +854,16 @@ gboolean gvir_domain_get_persistent(GVirDomain *dom) return virDomainIsPersistent(dom->priv->handle) == 1; } + +/** + * gvir_domain_get_saved: + * @dom: the domain + * + * Returns: TRUE if domain is in a saved state, FALSE otherwise. + */ +gboolean gvir_domain_get_saved(GVirDomain *dom) +{ + g_return_val_if_fail(GVIR_IS_DOMAIN(dom), FALSE); + + return virDomainHasManagedSaveImage(dom->priv->handle, 0) == 1; +} diff --git a/libvirt-gobject/libvirt-gobject-domain.h b/libvirt-gobject/libvirt-gobject-domain.h index 20388f2..bdff32e 100644 --- a/libvirt-gobject/libvirt-gobject-domain.h +++ b/libvirt-gobject/libvirt-gobject-domain.h @@ -167,6 +167,7 @@ gboolean gvir_domain_save_finish (GVirDomain *dom, GAsyncResult *result, GError **err); gboolean gvir_domain_get_persistent(GVirDomain *dom); +gboolean gvir_domain_get_saved(GVirDomain *dom); G_END_DECLS diff --git a/libvirt-gobject/libvirt-gobject.sym b/libvirt-gobject/libvirt-gobject.sym index 468bf65..7a2f65d 100644 --- a/libvirt-gobject/libvirt-gobject.sym +++ b/libvirt-gobject/libvirt-gobject.sym @@ -64,6 +64,7 @@ LIBVIRT_GOBJECT_0.0.4 { gvir_domain_set_config; gvir_domain_get_info; gvir_domain_get_persistent; + gvir_domain_get_saved; gvir_domain_screenshot; gvir_domain_snapshot_get_type; -- 1.7.7.6

3 16

[libvirt] A script for setting up x509 certs for libvirt/spice/vnc
by Daniel P. Berrange 17 Feb '12

17 Feb '12

After 4 years of swearing at the pain of setting up x509 certs, I finally decided to try to write a script to automate it. I'm attaching a very raw proof of concept called "virt-pki-admin.pl". It does the following * Create CA key+cert * Create server + client keys+cert & sign with the CA * Copy server/client certs to remote hosts into correct directories which is sufficient to get up & running with libvirtd/virt-manager/virsh etc using x509 eg, // Create a self-signed CA $ virt-pki-admin.pl init "Evil CA" // Add some servers virt-pki-admin add_server "Evil Moonbase" alpha.moonbase.evil.com virt-pki-admin add_server "Evil Moonbase" beta.moonbase.evil.com virt-pki-admin add_server "Evil Moonbase" gamma.moonbase.evil.com // And some clients virt-pki-admin add_client "Evil Henchmen" up.moonbase.evil.com virt-pki-admin add_client "Evil Henchmen" down.moonbase.evil.com virt-pki-admin add_client "Evil Henchmen" strange.moonbase.evil.com // Copy the server certs/keys via the SSH root account virt-pki-admin deploy_server alpha.moonbase.evil.com virt-pki-admin deploy_server beta.moonbase.evil.com virt-pki-admin deploy_server gamma.moonbase.evil.com // Copy the client certs/keys via the SSH root account virt-pki-admin deploy_client up.moonbase.evil.com virt-pki-admin deploy_client down.moonbase.evil.com virt-pki-admin deploy_client strange.moonbase.evil.com // Copy the client certs/keys via the SSH $USER account virt-pki-admin deploy_user_client up.moonbase.evil.com virt-pki-admin deploy_user_client down.moonbase.evil.com virt-pki-admin deploy_user_client strange.moonbase.evil.com With that, if you are logged into 'root' on any of 'up', 'down', or 'strange' you can connect to any server using qemu+tls://hostname/system. Likewise for non-root accounts, which also have setup GTK-VNC and SPICE-GTK certs to allow graphical access to QEMU using x509 certs. WIth some more work I plan to submit this to libvirt, but for now here is the script in case it is useful BTW it stores all certs & keys in $HOME/.libvirt/pki/ on the machine used to run the command. You can safely experiment with any of the commands *except* the 'deploy_' ones, without messing up your current x509 config Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

2 1

[libvirt] [PATCH] Don't add SPICE TLS channels when TLS is disabled
by Christophe Fergeau 17 Feb '12

17 Feb '12

It's possible to disable SPICE TLS in qemu.conf. When this happens, libvirt ignores any SPICE TLS port or x509 directory that may have been set when it builds the qemu command line to use. However, it's not ignoring the secure channels that may have been set and adds tls-channel arguments to qemu command line. Current qemu versions don't report an error when this happens, and try to use TLS for the specified channels. Before this patch <domain type='kvm'> <name>auto-tls-port</name> <memory>65536</memory> <os> <type arch='x86_64' machine='pc'>hvm</type> </os> <devices> <graphics type='spice' port='5900' tlsPort='-1' autoport='yes' listen='0' ke <listen type='address' address='0'/> <channel name='main' mode='secure'/> <channel name='inputs' mode='secure'/> </graphics> </devices> </domain> generates -spice port=5900,addr=0,disable-ticketing,tls-channel=main,tls-channel=inputs and after this patch we get -spice port=5900,addr=0,disable-ticketing This fixes bug #790436 --- src/qemu/qemu_command.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 99d7129..30fb3b1 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -5286,8 +5286,9 @@ qemuBuildCommandLine(virConnectPtr conn, int mode = def->graphics[0]->data.spice.channels[i]; switch (mode) { case VIR_DOMAIN_GRAPHICS_SPICE_CHANNEL_MODE_SECURE: - virBufferAsprintf(&opt, ",tls-channel=%s", - virDomainGraphicsSpiceChannelNameTypeToString(i)); + if (driver->spiceTLS) + virBufferAsprintf(&opt, ",tls-channel=%s", + virDomainGraphicsSpiceChannelNameTypeToString(i)); break; case VIR_DOMAIN_GRAPHICS_SPICE_CHANNEL_MODE_INSECURE: virBufferAsprintf(&opt, ",plaintext-channel=%s", -- 1.7.7.6

5 7

[libvirt] [libvirt-glib 1/2] Add gvir_config_domain_disk_[gs]et_cache
by Christophe Fergeau 17 Feb '12

17 Feb '12

--- libvirt-gconfig/libvirt-gconfig-domain-disk.c | 23 +++++++++++++++++++++++ libvirt-gconfig/libvirt-gconfig-domain-disk.h | 12 ++++++++++++ libvirt-gconfig/libvirt-gconfig.sym | 3 +++ libvirt-gconfig/tests/test-domain-create.c | 2 ++ 4 files changed, 40 insertions(+), 0 deletions(-) diff --git a/libvirt-gconfig/libvirt-gconfig-domain-disk.c b/libvirt-gconfig/libvirt-gconfig-domain-disk.c index b2861e4..afa7eda 100644 --- a/libvirt-gconfig/libvirt-gconfig-domain-disk.c +++ b/libvirt-gconfig/libvirt-gconfig-domain-disk.c @@ -172,6 +172,18 @@ void gvir_config_domain_disk_set_driver_type(GVirConfigDomainDisk *disk, "driver", "type", driver_type); } +void gvir_config_domain_disk_set_driver_cache(GVirConfigDomainDisk *disk, + GVirConfigDomainDiskCacheType cache_type) +{ + const char *cache_str; + + g_return_if_fail(GVIR_CONFIG_IS_DOMAIN_DISK(disk)); + cache_str = gvir_config_genum_get_nick(GVIR_CONFIG_TYPE_DOMAIN_DISK_CACHE_TYPE, cache_type); + g_return_if_fail(cache_str != NULL); + gvir_config_object_add_child_with_attribute(GVIR_CONFIG_OBJECT(disk), + "driver", "cache", cache_str); +} + void gvir_config_domain_disk_set_target_bus(GVirConfigDomainDisk *disk, GVirConfigDomainDiskBus bus) { @@ -269,6 +281,17 @@ gvir_config_domain_disk_get_driver_type(GVirConfigDomainDisk *disk) "driver", "type"); } +GVirConfigDomainDiskCacheType +gvir_config_domain_disk_get_driver_cache(GVirConfigDomainDisk *disk) +{ + g_return_val_if_fail(GVIR_CONFIG_IS_DOMAIN_DISK(disk), + GVIR_CONFIG_DOMAIN_DISK_CACHE_DEFAULT); + + return gvir_config_object_get_attribute_genum(GVIR_CONFIG_OBJECT(disk), + "driver", "cache", + GVIR_CONFIG_TYPE_DOMAIN_DISK_CACHE_TYPE, + GVIR_CONFIG_DOMAIN_DISK_CACHE_DEFAULT); +} GVirConfigDomainDiskBus gvir_config_domain_disk_get_target_bus(GVirConfigDomainDisk *disk) { diff --git a/libvirt-gconfig/libvirt-gconfig-domain-disk.h b/libvirt-gconfig/libvirt-gconfig-domain-disk.h index 3359049..4b16b80 100644 --- a/libvirt-gconfig/libvirt-gconfig-domain-disk.h +++ b/libvirt-gconfig/libvirt-gconfig-domain-disk.h @@ -75,6 +75,15 @@ typedef enum { } GVirConfigDomainDiskBus; typedef enum { + GVIR_CONFIG_DOMAIN_DISK_CACHE_DEFAULT, + GVIR_CONFIG_DOMAIN_DISK_CACHE_NONE, + GVIR_CONFIG_DOMAIN_DISK_CACHE_WRITETHROUGH, + GVIR_CONFIG_DOMAIN_DISK_CACHE_WRITEBACK, + GVIR_CONFIG_DOMAIN_DISK_CACHE_DIRECTSYNC, + GVIR_CONFIG_DOMAIN_DISK_CACHE_UNSAFE +} GVirConfigDomainDiskCacheType; + +typedef enum { GVIR_CONFIG_DOMAIN_DISK_GUEST_DEVICE_DISK, GVIR_CONFIG_DOMAIN_DISK_GUEST_DEVICE_FLOPPY, GVIR_CONFIG_DOMAIN_DISK_GUEST_DEVICE_CDROM @@ -100,6 +109,8 @@ void gvir_config_domain_disk_set_snapshot_type(GVirConfigDomainDisk *disk, GVirConfigDomainDiskSnapshotType type); void gvir_config_domain_disk_set_source(GVirConfigDomainDisk *disk, const char *source); +void gvir_config_domain_disk_set_driver_cache(GVirConfigDomainDisk *disk, + GVirConfigDomainDiskCacheType cache_type); void gvir_config_domain_disk_set_driver_name(GVirConfigDomainDisk *disk, const char *driver_name); void gvir_config_domain_disk_set_driver_type(GVirConfigDomainDisk *disk, @@ -113,6 +124,7 @@ GVirConfigDomainDiskType gvir_config_domain_disk_get_disk_type(GVirConfigDomainD GVirConfigDomainDiskGuestDeviceType gvir_config_domain_disk_get_guest_device_type(GVirConfigDomainDisk *disk); GVirConfigDomainDiskSnapshotType gvir_config_domain_disk_get_snapshot_type(GVirConfigDomainDisk *disk); char *gvir_config_domain_disk_get_source(GVirConfigDomainDisk *disk); +GVirConfigDomainDiskCacheType gvir_config_domain_disk_get_driver_cache(GVirConfigDomainDisk *disk); char *gvir_config_domain_disk_get_driver_name(GVirConfigDomainDisk *disk); char *gvir_config_domain_disk_get_driver_type(GVirConfigDomainDisk *disk); GVirConfigDomainDiskBus gvir_config_domain_disk_get_target_bus(GVirConfigDomainDisk *disk); diff --git a/libvirt-gconfig/libvirt-gconfig.sym b/libvirt-gconfig/libvirt-gconfig.sym index ab2c7bf..96ce58f 100644 --- a/libvirt-gconfig/libvirt-gconfig.sym +++ b/libvirt-gconfig/libvirt-gconfig.sym @@ -69,11 +69,14 @@ LIBVIRT_GCONFIG_0.0.4 { gvir_config_domain_disk_get_type; gvir_config_domain_disk_bus_get_type; + gvir_config_domain_disk_cache_type_get_type; gvir_config_domain_disk_guest_device_type_get_type; gvir_config_domain_disk_snapshot_type_get_type; gvir_config_domain_disk_type_get_type; gvir_config_domain_disk_new; gvir_config_domain_disk_new_from_xml; + gvir_config_domain_disk_get_driver_cache; + gvir_config_domain_disk_set_driver_cache; gvir_config_domain_disk_get_driver_name; gvir_config_domain_disk_set_driver_name; gvir_config_domain_disk_get_driver_type; diff --git a/libvirt-gconfig/tests/test-domain-create.c b/libvirt-gconfig/tests/test-domain-create.c index 821e0b0..0cd8304 100644 --- a/libvirt-gconfig/tests/test-domain-create.c +++ b/libvirt-gconfig/tests/test-domain-create.c @@ -101,6 +101,8 @@ int main(int argc, char **argv) gvir_config_domain_disk_set_driver_name(disk, "foo"); gvir_config_domain_disk_set_driver_type(disk, "bar"); gvir_config_domain_disk_set_driver_name(disk, "qemu"); + gvir_config_domain_disk_set_driver_cache(disk, GVIR_CONFIG_DOMAIN_DISK_CACHE_NONE); + g_assert(gvir_config_domain_disk_get_driver_cache(disk) == GVIR_CONFIG_DOMAIN_DISK_CACHE_NONE); gvir_config_domain_disk_set_driver_type(disk, "qcow2"); gvir_config_domain_disk_set_target_bus(disk, GVIR_CONFIG_DOMAIN_DISK_BUS_IDE); gvir_config_domain_disk_set_target_dev(disk, "hda"); -- 1.7.7.6

2 5

[libvirt] [libvirt-glib] Fix [gs]et_custom_xml-related leaks
by Christophe Fergeau 17 Feb '12

17 Feb '12

I forgot to run the testing code through valgrind before pushing the patches so a few small memory leaks crept in. --- libvirt-gconfig/libvirt-gconfig-domain.c | 1 + libvirt-gconfig/tests/test-domain-create.c | 8 ++++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/libvirt-gconfig/libvirt-gconfig-domain.c b/libvirt-gconfig/libvirt-gconfig-domain.c index d7ac4c6..177c926 100644 --- a/libvirt-gconfig/libvirt-gconfig-domain.c +++ b/libvirt-gconfig/libvirt-gconfig-domain.c @@ -479,6 +479,7 @@ gboolean gvir_config_domain_set_custom_xml(GVirConfigDomain *domain, gvir_config_object_delete_children(metadata, NULL, ns_uri); gvir_config_object_attach_add(metadata, custom_xml); g_object_unref(G_OBJECT(metadata)); + g_object_unref(G_OBJECT(custom_xml)); return TRUE; } diff --git a/libvirt-gconfig/tests/test-domain-create.c b/libvirt-gconfig/tests/test-domain-create.c index 1610587..821e0b0 100644 --- a/libvirt-gconfig/tests/test-domain-create.c +++ b/libvirt-gconfig/tests/test-domain-create.c @@ -177,8 +177,12 @@ int main(int argc, char **argv) gvir_config_domain_set_custom_xml(domain, "<foo/>", "ns", "http://bar", NULL); gvir_config_domain_set_custom_xml(domain, "<bar/>", "ns", "http://foo", NULL); - g_assert(g_strcmp0(gvir_config_domain_get_custom_xml(domain, "http://foo"), "<ns:bar xmlns:ns=\"http://foo\"/>") == 0); - g_assert(g_strcmp0(gvir_config_domain_get_custom_xml(domain, "http://bar"), "<ns:foo xmlns:ns=\"http://bar\"/>") == 0); + xml = gvir_config_domain_get_custom_xml(domain, "http://foo"); + g_assert(g_strcmp0(xml, "<ns:bar xmlns:ns=\"http://foo\"/>") == 0); + g_free(xml); + xml = gvir_config_domain_get_custom_xml(domain, "http://bar"); + g_assert(g_strcmp0(xml, "<ns:foo xmlns:ns=\"http://bar\"/>") == 0); + g_free(xml); xml = gvir_config_object_to_xml(GVIR_CONFIG_OBJECT(domain)); g_print("%s\n\n", xml); -- 1.7.7.6

2 2

[libvirt] [libvirt-glib 1/3] Tell CC to ignore unused macros
by Zeeshan Ali (Khattak) 17 Feb '12

17 Feb '12

From: "Zeeshan Ali (Khattak)" <zeeshanak(a)gnome.org> --- m4/virt-compile-warnings.m4 | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4 index 6659568..de542cc 100644 --- a/m4/virt-compile-warnings.m4 +++ b/m4/virt-compile-warnings.m4 @@ -39,6 +39,8 @@ AC_DEFUN([LIBVIRT_GLIB_COMPILE_WARNINGS],[ dontwarn="$dontwarn -Wdeclaration-after-statement" # Using long long is fine dontwarn="$dontwarn -Wlong-long" + # Unused macros are ok + dontwarn="$dontwarn -Wunused-macros" # g_clear_object & G_ATOMIC_OP_USE_GCC_BUILTINS causes -- 1.7.7.6

3 6

[libvirt] [PATCH] python: Avoid memory leaks on libvirt_virNodeGetCPUStats
by ajia＠redhat.com 17 Feb '12

17 Feb '12

From: Alex Jia <ajia(a)redhat.com> Detected by valgrind. Leaks are introduced in commit 4955602. * python/libvirt-override.c (libvirt_virNodeGetCPUStats): fix memory leaks and improve codes return value. For details, please see the following link: RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=770943 Signed-off-by: Alex Jia <ajia(a)redhat.com> --- python/libvirt-override.c | 46 ++++++++++++++++++++++++++++++-------------- 1 files changed, 31 insertions(+), 15 deletions(-) diff --git a/python/libvirt-override.c b/python/libvirt-override.c index 792cfa3..6e076bc 100644 --- a/python/libvirt-override.c +++ b/python/libvirt-override.c @@ -2503,7 +2503,9 @@ libvirt_virNodeGetCellsFreeMemory(PyObject *self ATTRIBUTE_UNUSED, PyObject *arg static PyObject * libvirt_virNodeGetCPUStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { - PyObject *ret; + PyObject *ret = NULL; + PyObject *key = NULL; + PyObject *val = NULL; PyObject *pyobj_conn; virConnectPtr conn; unsigned int flags; @@ -2512,39 +2514,53 @@ libvirt_virNodeGetCPUStats(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) virNodeCPUStatsPtr stats = NULL; if (!PyArg_ParseTuple(args, (char *)"Oii:virNodeGetCPUStats", &pyobj_conn, &cpuNum, &flags)) - return(NULL); + return ret; conn = (virConnectPtr)(PyvirConnect_Get(pyobj_conn)); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNodeGetCPUStats(conn, cpuNum, NULL, &nparams, flags); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) - return VIR_PY_NONE; + return ret; if (nparams) { if (VIR_ALLOC_N(stats, nparams) < 0) - return VIR_PY_NONE; + return PyErr_NoMemory(); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNodeGetCPUStats(conn, cpuNum, stats, &nparams, flags); LIBVIRT_END_ALLOW_THREADS; - if (c_retval < 0) { - VIR_FREE(stats); - return VIR_PY_NONE; - } - } - if (!(ret = PyDict_New())) { - VIR_FREE(stats); - return VIR_PY_NONE; + if (c_retval < 0) + goto error; } + + if (!(ret = PyDict_New())) + goto error; + for (i = 0; i < nparams; i++) { - PyDict_SetItem(ret, - libvirt_constcharPtrWrap(stats[i].field), - libvirt_ulonglongWrap(stats[i].value)); + key = libvirt_constcharPtrWrap(stats[i].field); + val = libvirt_ulonglongWrap(stats[i].value); + + if (!key || !val) + goto error; + + if (PyDict_SetItem(ret, key, val) < 0) { + Py_DECREF(ret); + goto error; + } + + Py_DECREF(key); + Py_DECREF(val); } VIR_FREE(stats); return ret; + +error: + VIR_FREE(stats); + Py_XDECREF(key); + Py_XDECREF(val); + return ret; } static PyObject * -- 1.7.1

1 0

[libvirt] [PATCH] nwfilter: improved logging during driver initialization
by Stefan Berger 17 Feb '12

17 Feb '12

Improve the logging during nwfilter driver initialization when testing the command line tools. --- src/nwfilter/nwfilter_ebiptables_driver.c | 41 +++++++++++++++++++++--------- 1 file changed, 29 insertions(+), 12 deletions(-) Index: libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_ebiptables_driver.c +++ libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c @@ -4036,6 +4036,7 @@ static int ebiptablesDriverInit(bool privileged) { virBuffer buf = VIR_BUFFER_INITIALIZER; + char *errmsg = NULL; if (!privileged) return 0; @@ -4056,8 +4057,14 @@ ebiptablesDriverInit(bool privileged) "%s", CMD_STOPONERR(1)); - if (ebiptablesExecCLI(&buf, NULL, NULL) < 0) - VIR_FREE(ebtables_cmd_path); + if (ebiptablesExecCLI(&buf, NULL, &errmsg) < 0) { + VIR_FREE(ebtables_cmd_path); + VIR_ERROR(_("Testing of ebtables command failed%s%s."), + errmsg ? ": " : "", + errmsg ? errmsg : ""); + } + } else { + VIR_WARN(_("Could not find 'ebtables' executable.")); } iptables_cmd_path = virFindFileInPath("iptables"); @@ -4070,8 +4077,14 @@ ebiptablesDriverInit(bool privileged) "%s", CMD_STOPONERR(1)); - if (ebiptablesExecCLI(&buf, NULL, NULL) < 0) - VIR_FREE(iptables_cmd_path); + if (ebiptablesExecCLI(&buf, NULL, &errmsg) < 0) { + VIR_FREE(iptables_cmd_path); + VIR_ERROR(_("Testing of iptables command failed%s%s."), + errmsg ? ": " : "", + errmsg ? errmsg : ""); + } + } else { + VIR_WARN(_("Could not find 'iptables' executable.")); } ip6tables_cmd_path = virFindFileInPath("ip6tables"); @@ -4084,25 +4097,29 @@ ebiptablesDriverInit(bool privileged) "%s", CMD_STOPONERR(1)); - if (ebiptablesExecCLI(&buf, NULL, NULL) < 0) - VIR_FREE(ip6tables_cmd_path); + if (ebiptablesExecCLI(&buf, NULL, &errmsg) < 0) { + VIR_FREE(ip6tables_cmd_path); + VIR_ERROR(_("Testing of ip6tables command failed%s%s."), + errmsg ? ": " : "", + errmsg ? errmsg : ""); + } + } else { + VIR_WARN(_("Could not find 'ip6tables' executable.")); } /* ip(6)tables support needs gawk & grep, ebtables doesn't */ if ((iptables_cmd_path != NULL || ip6tables_cmd_path != NULL) && (!grep_cmd_path || !gawk_cmd_path)) { - virNWFilterReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("essential tools to support ip(6)tables " - "firewalls could not be located")); + VIR_ERROR(_("essential tools to support ip(6)tables " + "firewalls could not be located")); VIR_FREE(iptables_cmd_path); VIR_FREE(ip6tables_cmd_path); } + VIR_FREE(errmsg); if (!ebtables_cmd_path && !iptables_cmd_path && !ip6tables_cmd_path) { - virNWFilterReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("firewall tools were not found or " - "cannot be used")); + VIR_ERROR(_("firewall tools were not found or cannot be used")); ebiptablesDriverShutdown(); return -ENOTSUP; }

2 2

[libvirt] [PATCHv2] qemu: Prevent crash of libvirtd without guest agent
by ajia＠redhat.com 16 Feb '12

16 Feb '12

From: Alex Jia <ajia(a)redhat.com> * src/qemu/qemu_process.c (qemuFindAgentConfig): avoid crash libvirtd due to deref a NULL pointer. * How to reproduce? 1. virsh edit the following xml into guest configuration: <channel type='pty'> <target type='virtio'/> </channel> 2. virsh start <domain> or % virt-install -n foo -r 1024 --disk path=/var/lib/libvirt/images/foo.img,size=1 \ --channel pty,target_type=virtio -l <installation tree> Signed-off-by: Alex Jia <ajia(a)redhat.com> --- src/qemu/qemu_process.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 939a83d..41218de 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -194,7 +194,7 @@ qemuFindAgentConfig(virDomainDefPtr def) if (channel->targetType != VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO) continue; - if (STREQ(channel->target.name, "org.qemu.guest_agent.0")) { + if (STREQ_NULLABLE(channel->target.name, "org.qemu.guest_agent.0")) { config = &channel->source; break; } -- 1.7.1

3 2

[libvirt] [PATCH] qemu: Unlock monitor when connecting to dest qemu fails
by Jiri Denemark 16 Feb '12

16 Feb '12

When migrating a qemu domain, we enter the monitor, send some commands, try to connect to destination qemu, send other commands, end exit the monitor. However, if we couldn't connect to destination qemu we forgot to exit the monitor. Bug introduced by commit d9d518b1c8ef3b65658cc91f85ba33a63c0959a4. --- src/qemu/qemu_migration.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 12cfbde..ea4185e 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -1624,8 +1624,10 @@ qemuMigrationRun(struct qemud_driver *driver, /* connect to the destination qemu if needed */ if (spec->destType == MIGRATION_DEST_CONNECT_HOST && - qemuMigrationConnect(driver, vm, spec) < 0) + qemuMigrationConnect(driver, vm, spec) < 0) { + qemuDomainObjExitMonitorWithDriver(driver, vm); goto cleanup; + } switch (spec->destType) { case MIGRATION_DEST_HOST: -- 1.7.8.4

2 2

[libvirt] [PATCH] qemu: Fix segfault when CPU host is empty
by Jiri Denemark 16 Feb '12

16 Feb '12

In case libvirtd cannot detect host CPU model (which may happen if it runs inside a virtual machine), the daemon is likely to segfault when starting a new qemu domain. It segfaults when domain XML asks for host (either model or passthrough) CPU or does not ask for any specific CPU model at all. --- src/qemu/qemu_command.c | 24 ++++++++++++------------ 1 files changed, 12 insertions(+), 12 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 99d7129..5633dfd 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -3508,22 +3508,13 @@ qemuBuildCpuArgStr(const struct qemud_driver *driver, *hasHwVirt = false; - if (def->cpu && - (def->cpu->mode != VIR_CPU_MODE_CUSTOM || def->cpu->model)) { - if (!(cpu = virCPUDefCopy(def->cpu))) - goto cleanup; - if (cpu->mode != VIR_CPU_MODE_CUSTOM && - !migrating && - cpuUpdate(cpu, host) < 0) - goto cleanup; - } - if (STREQ(def->os.arch, "i686")) default_model = "qemu32"; else default_model = "qemu64"; - if (cpu) { + if (def->cpu && + (def->cpu->mode != VIR_CPU_MODE_CUSTOM || def->cpu->model)) { virCPUCompareResult cmp; const char *preferred; int hasSVM; @@ -3539,6 +3530,14 @@ qemuBuildCpuArgStr(const struct qemud_driver *driver, goto cleanup; } + if (!(cpu = virCPUDefCopy(def->cpu))) + goto cleanup; + + if (cpu->mode != VIR_CPU_MODE_CUSTOM && + !migrating && + cpuUpdate(cpu, host) < 0) + goto cleanup; + cmp = cpuGuestData(host, cpu, &data); switch (cmp) { case VIR_CPU_COMPARE_INCOMPATIBLE: @@ -3647,7 +3646,8 @@ qemuBuildCpuArgStr(const struct qemud_driver *driver, ret = 0; cleanup: - cpuDataFree(host->arch, data); + if (host) + cpuDataFree(host->arch, data); virCPUDefFree(guest); virCPUDefFree(cpu); -- 1.7.8.4

3 3

[libvirt] [PATCH v2] storage: Allow runtime detection of scrub
by Michal Privoznik 16 Feb '12

16 Feb '12

Currently, if scrub (used for wiping algorithms) is not present at compile time, we don't support any other wiping algorithms than zeroing, even if it was installed later. Switch to runtime detection instead. --- diff to v1: -Add BuildRequires to spec file configure.ac | 30 ++++-------------------------- libvirt.spec.in | 3 +++ src/storage/storage_driver.c | 4 ---- 3 files changed, 7 insertions(+), 30 deletions(-) diff --git a/configure.ac b/configure.ac index 67351d9..5320f71 100644 --- a/configure.ac +++ b/configure.ac @@ -213,6 +213,8 @@ AC_PATH_PROG([UDEVSETTLE], [udevsettle], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_PATH_PROG([MODPROBE], [modprobe], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) +AC_PATH_PROG([SCRUB], [scrub], [], + [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_DEFINE_UNQUOTED([DNSMASQ],["$DNSMASQ"], [Location or name of the dnsmasq program]) @@ -232,6 +234,8 @@ if test -n "$MODPROBE"; then AC_DEFINE_UNQUOTED([MODPROBE],["$MODPROBE"], [Location or name of the modprobe program]) fi +AC_DEFINE_UNQUOTED([SCRUB],["$SCRUB"], + [Location or name of the scrub program (for wiping algorithms)]) dnl Specific dir for HTML output ? AC_ARG_WITH([html-dir], [AC_HELP_STRING([--with-html-dir=path], @@ -2500,32 +2504,6 @@ AM_CONDITIONAL([HAVE_LIBNL], [test "$have_libnl" = "yes"]) AC_SUBST([LIBNL_CFLAGS]) AC_SUBST([LIBNL_LIBS]) -dnl scrub program for different volume wiping algorithms - -AC_ARG_WITH([scrub], - AC_HELP_STRING([--with-scrub], [enable different volume wiping algorithms - @<:@default=check@:>@]), - [with_macvtap=${withval}], - [with_scrub=check]) - -if test "$with_scrub" != "no"; then - AC_PATH_PROG([SCRUB], [scrub]) - if test -z "$SCRUB" ; then - if test "$with_scrub" = "check"; then - with_scrub=no - else - AC_MSG_ERROR([You must install the 'scrub' binary to enable - different volume wiping algorithms]) - fi - else - with_scrub=yes - fi - if test "$with_scrub" = "yes"; then - AC_DEFINE_UNQUOTED([SCRUB], ["$SCRUB"], - [Location of the scrub program]) - fi -fi - # Only COPYING.LIB is under version control, yet COPYING # is included as part of the distribution tarball. # Copy one to the other, but only if this is a srcdir-build. diff --git a/libvirt.spec.in b/libvirt.spec.in index e48d8b8..3f0f19a 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -513,6 +513,9 @@ BuildRequires: nfs-utils # Fedora build root suckage BuildRequires: gawk +# For storage wiping with different algorithms +BuildRequires: scrub + %description Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). The main package includes diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c index 9170a17..df0e291 100644 --- a/src/storage/storage_driver.c +++ b/src/storage/storage_driver.c @@ -1918,7 +1918,6 @@ storageVolumeWipeInternal(virStorageVolDefPtr def, if (algorithm != VIR_STORAGE_VOL_WIPE_ALG_ZERO) { const char *alg_char ATTRIBUTE_UNUSED = NULL; switch (algorithm) { -#ifdef SCRUB case VIR_STORAGE_VOL_WIPE_ALG_NNSA: alg_char = "nnsa"; break; @@ -1943,13 +1942,11 @@ storageVolumeWipeInternal(virStorageVolDefPtr def, case VIR_STORAGE_VOL_WIPE_ALG_RANDOM: alg_char = "random"; break; -#endif default: virStorageReportError(VIR_ERR_INVALID_ARG, _("unsupported algorithm %d"), algorithm); } -#ifdef SCRUB cmd = virCommandNew(SCRUB); virCommandAddArgList(cmd, "-f", "-p", alg_char, def->target.path, NULL); @@ -1958,7 +1955,6 @@ storageVolumeWipeInternal(virStorageVolDefPtr def, goto out; ret = 0; -#endif goto out; } else { if (S_ISREG(st.st_mode) && st.st_blocks < (st.st_size / DEV_BSIZE)) { -- 1.7.3.4

2 2

[libvirt] question about guest status
by Wen Congyang 16 Feb '12

16 Feb '12

Hi all: If the guest runs on xen, we can know the guest OS paniced, and the guest status is paniced. But if the guest runs on qemu/kvm, we need the same feature. And the feature to know guest-is-panic is a very very good feature for enterprise. We have some ways to know that guest has paniced: 1. watchdog timeouts It is not a good way, because we can not say "the guest is paniced" in 100% accuracy 2. use a PV driver(like the XEN) The old RHELs do not have such driver... It can not work for the second kernel... 3. Adding a function for console-logging (in ring buffer or some) and check messages given by guests. If we allow some filtering script or some, we can catch Linux's panic messages. We can say the guest paniced if we catch such messages. We may be able to catch other events by other script I prefer to 3 now. Does anyone have a better idea? Thanks Wen Congyang

3 3

[libvirt] Anyone up for a libvirt webcast on FLOSS Weekly Podcasts
by Justin Clift 16 Feb '12

16 Feb '12

Hi all, Looking for someone to do a webcast about Libvirt, for the FLOSS Weekly podcast: http://twit.tv/show/floss-weekly Preferably someone pretty well known in the Libvirt Community (commit access maybe?). Said person must have decent bandwidth for the webcast connection, and be comfortable using Skype. Already asked DV who would, except he's very bandwidth limited, and the timezone (US/Los Angeles) is a pita for him. :( So, need an alternative person. :) The existing schedule is online: http://xrl.us/flossweeklyguests Anyone interested? Regards and best wishes, Justin Clift -- Aeolus Community Manager http://www.aeolusproject.org

1 0

[libvirt] [PATCH] daemon: fix logic bug with virAsprintf
by Eric Blake 16 Feb '12

16 Feb '12

Regression introduced in commit 7033c5f2, due to improper conversion from snprintf to virAsprintf. * daemon/remote.c (remoteDispatchAuthList): Check return value correctly. --- This one's embarrassing. I think I broke polkit authorization in 0.9.10. :( daemon/remote.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index 9c61306..724db23 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -2052,7 +2052,7 @@ remoteDispatchAuthList(virNetServerPtr server ATTRIBUTE_UNUSED, } else if (callerUid == 0) { char *ident; if (virAsprintf(&ident, "pid:%lld,uid:%d", - (long long) callerPid, callerUid) == 0) { + (long long) callerPid, callerUid) >= 0) { VIR_INFO("Bypass polkit auth for privileged client %s", ident); if (virNetServerClientSetIdentity(client, ident) < 0) -- 1.7.7.6

3 5

[libvirt] [PATCH] Fix build with polkit0
by Jim Fehlig 16 Feb '12

16 Feb '12

Commit 8dd623b9 introduced a build error with --enable-compile-warnings=error remote.c:2593: error: unused variable 'rv' [-Wunused-variable] Pushing under build-breaker rule. --- daemon/remote.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index 724db23..ed27053 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -2590,7 +2590,6 @@ remoteDispatchAuthPolkit(virNetServerPtr server, DBusError err; const char *action; char *ident = NULL; - int rv = -1; struct daemonClientPrivate *priv = virNetServerClientGetPrivateData(client); -- 1.7.7

1 0

[libvirt] [PATCHv4] python: Expose virDomain{G, S}etInterfaceParameters APIs in python binding
by ajia＠redhat.com 16 Feb '12

16 Feb '12

From: Alex Jia <ajia(a)redhat.com> The v4 patch corrects indentation issues. The v3 patch follows latest python binding codes and change 'size' type from int to Py_ssize_t. An simple example to show how to use it: #!/usr/bin/env python import libvirt conn = libvirt.open(None) dom = conn.lookupByName('foo') print dom.interfaceParameters('vnet0', 0) params = {'outbound.peak': 10, 'inbound.peak': 10, 'inbound.burst': 20, 'inbound.average': 20, 'outbound.average': 30, 'outbound.burst': 30} print dom.setInterfaceParameters('vnet0', params, 0) print dom.interfaceParameters('vnet0', 0) Signed-off-by: Alex Jia <ajia(a)redhat.com> --- python/libvirt-override-api.xml | 16 +++++ python/libvirt-override.c | 126 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 142 insertions(+), 0 deletions(-) diff --git a/python/libvirt-override-api.xml b/python/libvirt-override-api.xml index 563dd46..ab8f33a 100644 --- a/python/libvirt-override-api.xml +++ b/python/libvirt-override-api.xml @@ -261,6 +261,22 @@ <arg name='domain' type='virDomainPtr' info='pointer to domain object'/> <arg name='flags' type='int' info='an OR'ed set of virDomainModificationImpact'/> </function> + <function name='virDomainSetInterfaceParameters' file='python'> + <info>Change the bandwidth tunables for a interface device</info> + <arg name='dom' type='virDomainPtr' info='pointer to the domain'/> + <arg name='device' type='const char *' info='interface name'/> + <arg name='params' type='virTypedParameterPtr' info='Pointer to bandwidth tuning params object'/> + <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/> + <return type='int' info='0 in case of success, -1 in case of failure'/> + </function> + <function name='virDomainGetInterfaceParameters' file='python'> + <info>Get the bandwidth tunables for a interface device</info> + <arg name='dom' type='virDomainPtr' info='pointer to the domain'/> + <arg name='device' type='const char *' info='interface name'/> + <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/> + <return type='str *' info='the bandwidth tunables value or None in case of error'/> + </function> + <function name='virConnectListStoragePools' file='python'> <info>list the storage pools, stores the pointers to the names in @names</info> <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/> diff --git a/python/libvirt-override.c b/python/libvirt-override.c index 4e8a97e..078324e 100644 --- a/python/libvirt-override.c +++ b/python/libvirt-override.c @@ -1109,6 +1109,130 @@ cleanup: } static PyObject * +libvirt_virDomainSetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) +{ + virDomainPtr domain; + PyObject *pyobj_domain, *info; + PyObject *ret = NULL; + int i_retval; + int nparams = 0; + Py_ssize_t size = 0; + unsigned int flags; + const char *device = NULL; + virTypedParameterPtr params, new_params; + + if (!PyArg_ParseTuple(args, + (char *)"OzOi:virDomainSetInterfaceParameters", + &pyobj_domain, &device, &info, &flags)) + return NULL; + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + if ((size = PyDict_Size(info)) < 0) + return NULL; + + if (size == 0) { + PyErr_Format(PyExc_LookupError, + "Need non-empty dictionary to set attributes"); + return NULL; + } + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) + return VIR_PY_INT_FAIL; + + if (nparams == 0) { + PyErr_Format(PyExc_LookupError, + "Domain has no settable attributes"); + return NULL; + } + + if (VIR_ALLOC_N(params, nparams) < 0) + return PyErr_NoMemory(); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_INT_FAIL; + goto cleanup; + } + + new_params = setPyVirTypedParameter(info, params, nparams); + if (!new_params) + goto cleanup; + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainSetInterfaceParameters(domain, device, new_params, size, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_INT_FAIL; + goto cleanup; + } + + ret = VIR_PY_INT_SUCCESS; + +cleanup: + virTypedParameterArrayClear(params, nparams); + VIR_FREE(params); + VIR_FREE(new_params); + return ret; +} + +static PyObject * +libvirt_virDomainGetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) +{ + virDomainPtr domain; + PyObject *pyobj_domain; + PyObject *ret = NULL; + int i_retval; + int nparams = 0; + unsigned int flags; + const char *device = NULL; + virTypedParameterPtr params; + + if (!PyArg_ParseTuple(args, (char *)"Ozi:virDomainGetInterfaceParameters", + &pyobj_domain, &device, &flags)) + return NULL; + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) + return VIR_PY_NONE; + + if (!nparams) + return PyDict_New(); + + if (VIR_ALLOC_N(params, nparams) < 0) + return PyErr_NoMemory(); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_NONE; + goto cleanup; + } + + ret = getPyVirTypedParameter(params, nparams); + +cleanup: + virTypedParameterArrayClear(params, nparams); + VIR_FREE(params); + return ret; +} + +static PyObject * libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virDomainPtr domain; @@ -5256,6 +5380,8 @@ static PyMethodDef libvirtMethods[] = { {(char *) "virDomainGetMemoryParameters", libvirt_virDomainGetMemoryParameters, METH_VARARGS, NULL}, {(char *) "virDomainSetNumaParameters", libvirt_virDomainSetNumaParameters, METH_VARARGS, NULL}, {(char *) "virDomainGetNumaParameters", libvirt_virDomainGetNumaParameters, METH_VARARGS, NULL}, + {(char *) "virDomainSetInterfaceParameters", libvirt_virDomainSetInterfaceParameters, METH_VARARGS, NULL}, + {(char *) "virDomainGetInterfaceParameters", libvirt_virDomainGetInterfaceParameters, METH_VARARGS, NULL}, {(char *) "virDomainGetVcpus", libvirt_virDomainGetVcpus, METH_VARARGS, NULL}, {(char *) "virDomainPinVcpu", libvirt_virDomainPinVcpu, METH_VARARGS, NULL}, {(char *) "virDomainPinVcpuFlags", libvirt_virDomainPinVcpuFlags, METH_VARARGS, NULL}, -- 1.7.1

3 2

[libvirt] [PATCH] snapshot: fix snapshot deletion
by Eric Blake 16 Feb '12

16 Feb '12

Bug introduced in commit 35abced. On an inactive domain, $ virsh snapshot-create-as dom snap $ virsh snapshot-create dom $ virsh snapshot-create dom $ virsh snapshot-delete --children dom snap could crash libvirtd, due to a use-after-free that results when the callback freed the current element in the iteration. * src/conf/domain_conf.c (virDomainSnapshotForEachChild) (virDomainSnapshotActOnDescendant): Allow iteration to delete current child. --- src/conf/domain_conf.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index f8d0a4c..da00830 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -13325,8 +13325,9 @@ virDomainSnapshotForEachChild(virDomainSnapshotObjPtr snapshot, virDomainSnapshotObjPtr child = snapshot->first_child; while (child) { + virDomainSnapshotObjPtr next = child->sibling; (iter)(child, child->def->name, data); - child = child->sibling; + child = next; } return snapshot->nchildren; @@ -13346,10 +13347,10 @@ virDomainSnapshotActOnDescendant(void *payload, virDomainSnapshotObjPtr obj = payload; struct snapshot_act_on_descendant *curr = data; - (curr->iter)(payload, name, curr->data); curr->number += 1 + virDomainSnapshotForEachDescendant(obj, curr->iter, curr->data); + (curr->iter)(payload, name, curr->data); } /* Run iter(data) on all descendants of snapshot, while ignoring all -- 1.7.7.6

2 2

[libvirt] [PATCH] daemon: plug memory leak
by Eric Blake 16 Feb '12

16 Feb '12

Leak introduced in commit bb2eddc6. * daemon/remote.c (remoteDispatchAuthPolkit): Also free pkout on success. --- daemon/remote.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index 1cea942..9c61306 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -2536,6 +2536,7 @@ remoteDispatchAuthPolkit(virNetServerPtr server ATTRIBUTE_UNUSED, virNetServerClientSetIdentity(client, ident); virMutexUnlock(&priv->lock); virCommandFree(cmd); + VIR_FREE(pkout); VIR_FREE(ident); return 0; -- 1.7.7.6

2 2

[libvirt] libvirtError: internal error cannot create rule since ebtables tool is missing.
by Phantomcircuit 15 Feb '12

15 Feb '12

# libvirtd --version libvirtd (libvirt) 0.9.8 # which ebtables /sbin/ebtables 2012-02-15 09:40:59.083+0000: 17675: error : ebtablesCreateRuleInstance:1943 : internal error cannot create rule since ebtables tool is missing. 2012-02-15 09:40:59.107+0000: 17675: error : virNetDevGetIndex:656 : Unable to get index for interface vnet0: No such device ebtables_cmd_path = virFindFileInPath("ebtables"); I can't figure out why ebtables_cmd_path is NULL when the call to ebtablesCreateRuleInstance is made.

2 1

[libvirt] [PATCH] qemu: Prevent crash of libvirtd without guest agent
by ajia＠redhat.com 15 Feb '12

15 Feb '12

From: Alex Jia <ajia(a)redhat.com> * src/qemu/qemu_process.c (qemuFindAgentConfig): avoid crash libvirtd due to deref a NULL pointer. * How to reproduce? 1. virsh edit the following xml into guest configuration: <channel type='pty'> <target type='virtio'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> 2. virsh start <domain> or % virt-install -n foo -r 1024 --disk path=/var/lib/libvirt/images/foo.img,size=1 \ --channel pty,target_type=virtio -l <installation tree> Signed-off-by: Alex Jia <ajia(a)redhat.com> --- src/qemu/qemu_process.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 2d92d66..6dc1732 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -189,11 +189,14 @@ qemuFindAgentConfig(virDomainDefPtr def) for (i = 0 ; i < def->nchannels ; i++) { virDomainChrDefPtr channel = def->channels[i]; + if(!channel) + break; if (channel->targetType != VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO) continue; - if (STREQ(channel->target.name, "org.qemu.guest_agent.0")) { + if (channel->target.name && + STREQ(channel->target.name, "org.qemu.guest_agent.0")) { config = &channel->source; break; } -- 1.7.1

2 1

[libvirt] [PATCH v2] RFC Libvirt + Openvswitch
by Ansis Atteka 15 Feb '12

15 Feb '12

This patch allows libvirt to add interfaces to already existing Open vSwitch bridges. The following syntax in domain XML file can be used: <interface type='bridge'> <mac address='52:54:00:d0:3f:f2'/> <source bridge='ovsbr'/> <virtualport type='openvswitch'> <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'/> </virtualport> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> or if libvirt should auto-generate the interfaceid use following syntax: <interface type='bridge'> <mac address='52:54:00:d0:3f:f2'/> <source bridge='ovsbr'/> <virtualport type='openvswitch'> </virtualport> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> It is also possible to pass an optional profileid. To do that use following syntax: <interface type='bridge'> <source bridge='ovsbr'/> <mac address='00:55:1a:65:a2:8d'/> <virtualport type='openvswitch'> <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d' profileid='test-profile'/> </virtualport> </interface> To create Open vSwitch bridge install Open vSwitch and run the following command: ovs-vsctl add-br ovsbr --- configure.ac | 5 + src/Makefile.am | 1 + src/conf/domain_conf.c | 51 +++++++++++-- src/conf/domain_conf.h | 5 +- src/conf/netdev_vport_profile_conf.c | 47 +++++++++++- src/libvirt_private.syms | 7 ++- src/lxc/lxc_driver.c | 37 +++++++-- src/network/bridge_driver.c | 3 +- src/qemu/qemu_command.c | 5 +- src/qemu/qemu_hotplug.c | 17 ++++- src/qemu/qemu_migration.c | 4 +- src/qemu/qemu_process.c | 10 ++- src/uml/uml_conf.c | 3 +- src/util/virnetdevopenvswitch.c | 135 ++++++++++++++++++++++++++++++++++ src/util/virnetdevopenvswitch.h | 42 +++++++++++ src/util/virnetdevtap.c | 14 +++- src/util/virnetdevtap.h | 5 +- src/util/virnetdevvportprofile.c | 2 + src/util/virnetdevvportprofile.h | 7 ++- 19 files changed, 365 insertions(+), 35 deletions(-) create mode 100644 src/util/virnetdevopenvswitch.c create mode 100644 src/util/virnetdevopenvswitch.h diff --git a/configure.ac b/configure.ac index 9fb7bfc..dca178f 100644 --- a/configure.ac +++ b/configure.ac @@ -213,6 +213,8 @@ AC_PATH_PROG([UDEVSETTLE], [udevsettle], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_PATH_PROG([MODPROBE], [modprobe], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) +AC_PATH_PROG([OVSVSCTL], [ovs-vsctl], [ovs-vsctl], + [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_DEFINE_UNQUOTED([DNSMASQ],["$DNSMASQ"], [Location or name of the dnsmasq program]) @@ -220,6 +222,9 @@ AC_DEFINE_UNQUOTED([RADVD],["$RADVD"], [Location or name of the radvd program]) AC_DEFINE_UNQUOTED([TC],["$TC"], [Location or name of the tc profram (see iproute2)]) +AC_DEFINE_UNQUOTED([OVSVSCTL],["$OVSVSCTL"], + [Location or name of the ovs-vsctl program]) + if test -n "$UDEVADM"; then AC_DEFINE_UNQUOTED([UDEVADM],["$UDEVADM"], [Location or name of the udevadm program]) diff --git a/src/Makefile.am b/src/Makefile.am index a3dd847..d5f52a0 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -97,6 +97,7 @@ UTIL_SOURCES = \ util/virnetdevbandwidth.h util/virnetdevbandwidth.c \ util/virnetdevbridge.h util/virnetdevbridge.c \ util/virnetdevmacvlan.c util/virnetdevmacvlan.h \ + util/virnetdevopenvswitch.h util/virnetdevopenvswitch.c \ util/virnetdevtap.h util/virnetdevtap.c \ util/virnetdevveth.h util/virnetdevveth.c \ util/virnetdevvportprofile.h util/virnetdevvportprofile.c \ diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index a09a506..5b5db43 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -31,6 +31,7 @@ #include <sys/time.h> #include <strings.h> +#include "internal.h" #include "virterror_internal.h" #include "datatypes.h" #include "domain_conf.h" @@ -951,6 +952,7 @@ virDomainActualNetDefFree(virDomainActualNetDefPtr def) switch (def->type) { case VIR_DOMAIN_NET_TYPE_BRIDGE: VIR_FREE(def->data.bridge.brname); + VIR_FREE(def->data.bridge.ovsPort); break; case VIR_DOMAIN_NET_TYPE_DIRECT: VIR_FREE(def->data.direct.linkdev); @@ -994,6 +996,7 @@ void virDomainNetDefFree(virDomainNetDefPtr def) case VIR_DOMAIN_NET_TYPE_BRIDGE: VIR_FREE(def->data.bridge.brname); VIR_FREE(def->data.bridge.ipaddr); + VIR_FREE(def->data.bridge.ovsPort); break; case VIR_DOMAIN_NET_TYPE_INTERNAL: @@ -3732,7 +3735,11 @@ virDomainActualNetDefParseXML(xmlNodePtr node, } if (actual->type == VIR_DOMAIN_NET_TYPE_BRIDGE) { - actual->data.bridge.brname = virXPathString("string(./source[1]/@bridge)", ctxt); + xmlNodePtr virtPortNode = virXPathNode("./virtualport", ctxt); + if (virtPortNode && + (!(actual->data.bridge.ovsPort = + virNetDevVPortProfileParse(virtPortNode)))) + goto error; } else if (actual->type == VIR_DOMAIN_NET_TYPE_DIRECT) { xmlNodePtr virtPortNode; @@ -3861,7 +3868,8 @@ virDomainNetDefParseXML(virCapsPtr caps, mode = virXMLPropString(cur, "mode"); } else if ((virtPort == NULL) && ((def->type == VIR_DOMAIN_NET_TYPE_DIRECT) || - (def->type == VIR_DOMAIN_NET_TYPE_NETWORK)) && + (def->type == VIR_DOMAIN_NET_TYPE_NETWORK) || + (def->type == VIR_DOMAIN_NET_TYPE_BRIDGE)) && xmlStrEqual(cur->name, BAD_CAST "virtualport")) { if (!(virtPort = virNetDevVPortProfileParse(cur))) goto error; @@ -4000,6 +4008,8 @@ virDomainNetDefParseXML(virCapsPtr caps, def->data.bridge.ipaddr = address; address = NULL; } + def->data.bridge.ovsPort = virtPort; + virtPort = NULL; break; case VIR_DOMAIN_NET_TYPE_CLIENT: @@ -10429,6 +10439,12 @@ virDomainActualNetDefFormat(virBufferPtr buf, case VIR_DOMAIN_NET_TYPE_BRIDGE: virBufferEscapeString(buf, " <source bridge='%s'/>\n", def->data.bridge.brname); + if (def->data.bridge.ovsPort) { + virBufferAdjustIndent(buf, 6); + if (virNetDevVPortProfileFormat(def->data.bridge.ovsPort, buf) < 0) + return -1; + virBufferAdjustIndent(buf, -6); + } break; case VIR_DOMAIN_NET_TYPE_DIRECT: @@ -10516,6 +10532,12 @@ virDomainNetDefFormat(virBufferPtr buf, if (def->data.bridge.ipaddr) virBufferAsprintf(buf, " <ip address='%s'/>\n", def->data.bridge.ipaddr); + if (def->data.bridge.ovsPort) { + virBufferAdjustIndent(buf, 6); + if (virNetDevVPortProfileFormat(def->data.bridge.ovsPort, buf) < 0) + return -1; + virBufferAdjustIndent(buf, -6); + } break; case VIR_DOMAIN_NET_TYPE_SERVER: @@ -13832,15 +13854,27 @@ virDomainNetGetActualDirectMode(virDomainNetDefPtr iface) } virNetDevVPortProfilePtr -virDomainNetGetActualDirectVirtPortProfile(virDomainNetDefPtr iface) +virDomainNetGetActualVirtPortProfile(virDomainNetDefPtr iface) { - if (iface->type == VIR_DOMAIN_NET_TYPE_DIRECT) + switch (iface->type) { + case VIR_DOMAIN_NET_TYPE_DIRECT: return iface->data.direct.virtPortProfile; - if (iface->type != VIR_DOMAIN_NET_TYPE_NETWORK) - return NULL; - if (!iface->data.network.actual) + case VIR_DOMAIN_NET_TYPE_BRIDGE: + return iface->data.bridge.ovsPort; + case VIR_DOMAIN_NET_TYPE_NETWORK: + if (!iface->data.network.actual) + return NULL; + switch (iface->data.network.actual->type) { + case VIR_DOMAIN_NET_TYPE_DIRECT: + return iface->data.network.actual->data.direct.virtPortProfile; + case VIR_DOMAIN_NET_TYPE_BRIDGE: + return iface->data.network.actual->data.bridge.ovsPort; + default: + return NULL; + } + default: return NULL; - return iface->data.network.actual->data.direct.virtPortProfile; + } } virNetDevBandwidthPtr @@ -13853,7 +13887,6 @@ virDomainNetGetActualBandwidth(virDomainNetDefPtr iface) return iface->bandwidth; } - /* Return listens[ii] from the appropriate union for the graphics * type, or NULL if this is an unsuitable type, or the index is out of * bounds. If force0 is TRUE, ii == 0, and there is no listen array, diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 8bb21cf..c4c3551 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -41,6 +41,7 @@ # include "virnetdevmacvlan.h" # include "sysinfo.h" # include "virnetdevvportprofile.h" +# include "virnetdevopenvswitch.h" # include "virnetdevbandwidth.h" /* Different types of hypervisor */ @@ -596,6 +597,7 @@ struct _virDomainActualNetDef { union { struct { char *brname; + virNetDevVPortProfilePtr ovsPort; } bridge; struct { char *linkdev; @@ -647,6 +649,7 @@ struct _virDomainNetDef { struct { char *brname; char *ipaddr; + virNetDevVPortProfilePtr ovsPort; } bridge; struct { char *name; @@ -1875,7 +1878,7 @@ const char *virDomainNetGetActualBridgeName(virDomainNetDefPtr iface); const char *virDomainNetGetActualDirectDev(virDomainNetDefPtr iface); int virDomainNetGetActualDirectMode(virDomainNetDefPtr iface); virNetDevVPortProfilePtr -virDomainNetGetActualDirectVirtPortProfile(virDomainNetDefPtr iface); +virDomainNetGetActualVirtPortProfile(virDomainNetDefPtr iface); virNetDevBandwidthPtr virDomainNetGetActualBandwidth(virDomainNetDefPtr iface); diff --git a/src/conf/netdev_vport_profile_conf.c b/src/conf/netdev_vport_profile_conf.c index b48b2cb..205d674 100644 --- a/src/conf/netdev_vport_profile_conf.c +++ b/src/conf/netdev_vport_profile_conf.c @@ -35,7 +35,8 @@ VIR_ENUM_IMPL(virNetDevVPort, VIR_NETDEV_VPORT_PROFILE_LAST, "none", "802.1Qbg", - "802.1Qbh") + "802.1Qbh", + "openvswitch") virNetDevVPortProfilePtr @@ -47,6 +48,7 @@ virNetDevVPortProfileParse(xmlNodePtr node) char *virtPortTypeIDVersion = NULL; char *virtPortInstanceID = NULL; char *virtPortProfileID = NULL; + char *virtPortInterfaceID = NULL; virNetDevVPortProfilePtr virtPort = NULL; xmlNodePtr cur = node->children; @@ -76,7 +78,7 @@ virNetDevVPortProfileParse(xmlNodePtr node) virtPortTypeIDVersion = virXMLPropString(cur, "typeidversion"); virtPortInstanceID = virXMLPropString(cur, "instanceid"); virtPortProfileID = virXMLPropString(cur, "profileid"); - + virtPortInterfaceID = virXMLPropString(cur, "interfaceid"); break; } @@ -171,6 +173,33 @@ virNetDevVPortProfileParse(xmlNodePtr node) goto error; } break; + case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH: + if (virtPortInterfaceID != NULL) { + if (virUUIDParse(virtPortInterfaceID, + virtPort->u.openvswitch.interfaceID)) { + virNetDevError(VIR_ERR_XML_ERROR, "%s", + _("cannot parse interfaceid parameter as a uuid")); + goto error; + } + } else { + if (virUUIDGenerate(virtPort->u.openvswitch.interfaceID)) { + virNetDevError(VIR_ERR_XML_ERROR, "%s", + _("cannot generate a random uuid for interfaceid")); + goto error; + } + } + /* profileid is not mandatory for Open vSwitch */ + if (virtPortProfileID != NULL) { + if (virStrcpyStatic(virtPort->u.openvswitch.profileID, + virtPortProfileID) == NULL) { + virNetDevError(VIR_ERR_XML_ERROR, "%s", + _("profileid parameter too long")); + goto error; + } + } else { + virtPort->u.openvswitch.profileID[0] = '\0'; + } + break; default: virNetDevError(VIR_ERR_XML_ERROR, @@ -225,6 +254,20 @@ virNetDevVPortProfileFormat(virNetDevVPortProfilePtr virtPort, virtPort->u.virtPort8021Qbh.profileID); break; + case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH: + virUUIDFormat(virtPort->u.openvswitch.interfaceID, + uuidstr); + if (virtPort->u.openvswitch.profileID[0] == '\0') { + virBufferAsprintf(buf, " <parameters interfaceid='%s'/>\n", + uuidstr); + } else { + virBufferAsprintf(buf, " <parameters interfaceid='%s' " + "profileid='%s'/>\n", uuidstr, + virtPort->u.openvswitch.profileID); + } + + break; + default: virNetDevError(VIR_ERR_XML_ERROR, _("unexpected virtualport type %d"), virtPort->virtPortType); diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 0c22dec..ad5c7d3 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -378,7 +378,7 @@ virDomainNetGetActualBandwidth; virDomainNetGetActualBridgeName; virDomainNetGetActualDirectDev; virDomainNetGetActualDirectMode; -virDomainNetGetActualDirectVirtPortProfile; +virDomainNetGetActualVirtPortProfile; virDomainNetGetActualType; virDomainNetIndexByMac; virDomainNetInsert; @@ -1237,6 +1237,11 @@ virNetDevMacVLanCreateWithVPortProfile; virNetDevMacVLanDeleteWithVPortProfile; +# virnetdevopenvswitch.h +virNetDevOpenvswitchAddPort; +virNetDevOpenvswitchRemovePort; + + # virnetdevtap.h virNetDevTapCreate; virNetDevTapCreateInBridgePort; diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index b712da4..17e8312 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -56,6 +56,7 @@ #include "domain_nwfilter.h" #include "network/bridge_driver.h" #include "virnetdev.h" +#include "virnetdevtap.h" #include "virnodesuspend.h" #include "virtime.h" #include "virtypedparam.h" @@ -1105,6 +1106,7 @@ static void lxcVmCleanup(lxc_driver_t *driver, virCgroupPtr cgroup; int i; lxcDomainObjPrivatePtr priv = vm->privateData; + virNetDevVPortProfilePtr vport = NULL; /* now that we know it's stopped call the hook if present */ if (virHookPresent(VIR_HOOK_DRIVER_LXC)) { @@ -1132,10 +1134,15 @@ static void lxcVmCleanup(lxc_driver_t *driver, priv->monitorWatch = -1; for (i = 0 ; i < vm->def->nnets ; i++) { - ignore_value(virNetDevSetOnline(vm->def->nets[i]->ifname, false)); - ignore_value(virNetDevVethDelete(vm->def->nets[i]->ifname)); - - networkReleaseActualDevice(vm->def->nets[i]); + virDomainNetDefPtr iface = vm->def->nets[i]; + vport = virDomainNetGetActualVirtPortProfile(iface); + ignore_value(virNetDevSetOnline(iface->ifname, false)); + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ignore_value(virNetDevOpenvswitchRemovePort( + virDomainNetGetActualBridgeName(iface), + iface->ifname)); + ignore_value(virNetDevVethDelete(iface->ifname)); + networkReleaseActualDevice(iface); } virDomainConfVMNWFilterTeardown(vm); @@ -1165,6 +1172,7 @@ static int lxcSetupInterfaceBridged(virConnectPtr conn, int ret = -1; char *parentVeth; char *containerVeth = NULL; + const virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(net); VIR_DEBUG("calling vethCreate()"); parentVeth = net->ifname; @@ -1186,7 +1194,11 @@ static int lxcSetupInterfaceBridged(virConnectPtr conn, if (virNetDevSetMAC(containerVeth, net->mac) < 0) goto cleanup; - if (virNetDevBridgeAddPort(brname, parentVeth) < 0) + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ret = virNetDevOpenvswitchAddPort(brname, parentVeth, net->mac, vport); + else + ret = virNetDevBridgeAddPort(brname, parentVeth); + if (ret < 0) goto cleanup; if (virNetDevSetOnline(parentVeth, true) < 0) @@ -1242,7 +1254,7 @@ static int lxcSetupInterfaceDirect(virConnectPtr conn, * and automagically dies when the container dies. So * we have no dev to perform disassociation with. */ - prof = virDomainNetGetActualDirectVirtPortProfile(net); + prof = virDomainNetGetActualVirtPortProfile(net); if (prof) { lxcError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", _("Unable to set port profile on direct interfaces")); @@ -1260,7 +1272,7 @@ static int lxcSetupInterfaceDirect(virConnectPtr conn, virDomainNetGetActualDirectDev(net), virDomainNetGetActualDirectMode(net), false, false, def->uuid, - virDomainNetGetActualDirectVirtPortProfile(net), + virDomainNetGetActualVirtPortProfile(net), &res_ifname, VIR_NETDEV_VPORT_PROFILE_OP_CREATE, driver->stateDir, @@ -1377,8 +1389,15 @@ static int lxcSetupInterfaces(virConnectPtr conn, cleanup: if (ret != 0) { - for (i = 0 ; i < def->nnets ; i++) - networkReleaseActualDevice(def->nets[i]); + for (i = 0 ; i < def->nnets ; i++) { + virDomainNetDefPtr iface = def->nets[i]; + virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(iface); + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ignore_value(virNetDevOpenvswitchRemovePort( + virDomainNetGetActualBridgeName(iface), + iface->ifname)); + networkReleaseActualDevice(iface); + } } return ret; } diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index 57ebb9f..1423d3f 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -1765,7 +1765,8 @@ networkStartNetworkVirtual(struct network_driver *driver, goto err0; } if (virNetDevTapCreateInBridgePort(network->def->bridge, - &macTapIfName, network->def->mac, 0, false, NULL) < 0) { + &macTapIfName, network->def->mac, 0, + false, NULL, NULL) < 0) { VIR_FREE(macTapIfName); goto err0; } diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 1b92aa4..591e371 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -154,7 +154,7 @@ qemuPhysIfaceConnect(virDomainDefPtr def, virDomainNetGetActualDirectDev(net), virDomainNetGetActualDirectMode(net), true, vnet_hdr, def->uuid, - virDomainNetGetActualDirectVirtPortProfile(net), + virDomainNetGetActualVirtPortProfile(net), &res_ifname, vmop, driver->stateDir, virDomainNetGetActualBandwidth(net)); @@ -247,7 +247,8 @@ qemuNetworkIfaceConnect(virDomainDefPtr def, memcpy(tapmac, net->mac, VIR_MAC_BUFLEN); tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */ err = virNetDevTapCreateInBridgePort(brname, &net->ifname, tapmac, - vnet_hdr, true, &tapfd); + vnet_hdr, true, &tapfd, + virDomainNetGetActualVirtPortProfile(net)); virDomainAuditNetDevice(def, net, "/dev/net/tun", tapfd >= 0); if (err < 0) { if (template_ifname) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index b4870be..3b1dbbf 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -40,6 +40,7 @@ #include "qemu_cgroup.h" #include "locking/domain_lock.h" #include "network/bridge_driver.h" +#include "virnetdevtap.h" #define VIR_FROM_THIS VIR_FROM_QEMU @@ -652,6 +653,7 @@ int qemuDomainAttachNetDevice(virConnectPtr conn, int vhostfd = -1; char *nicstr = NULL; char *netstr = NULL; + virNetDevVPortProfilePtr vport = NULL; int ret = -1; virDomainDevicePCIAddress guestAddr; int vlan; @@ -838,6 +840,12 @@ cleanup: if (iface_connected) virDomainConfNWFilterTeardown(net); + vport = virDomainNetGetActualVirtPortProfile(net); + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ignore_value(virNetDevOpenvswitchRemovePort( + virDomainNetGetActualBridgeName(net), + net->ifname)); + networkReleaseActualDevice(net); } @@ -1833,6 +1841,7 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver, qemuDomainObjPrivatePtr priv = vm->privateData; int vlan; char *hostnet_name = NULL; + virNetDevVPortProfilePtr vport = NULL; for (i = 0 ; i < vm->def->nnets ; i++) { virDomainNetDefPtr net = vm->def->nets[i]; @@ -1923,7 +1932,7 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver, detach->ifname, detach->mac, virDomainNetGetActualDirectDev(detach), virDomainNetGetActualDirectMode(detach), - virDomainNetGetActualDirectVirtPortProfile(detach), + virDomainNetGetActualVirtPortProfile(detach), driver->stateDir)); VIR_FREE(detach->ifname); } @@ -1938,6 +1947,12 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver, } } + vport = virDomainNetGetActualVirtPortProfile(detach); + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ignore_value(virNetDevOpenvswitchRemovePort( + virDomainNetGetActualBridgeName(detach), + detach->ifname)); + networkReleaseActualDevice(detach); if (vm->def->nnets > 1) { memmove(vm->def->nets + i, diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 12cfbde..a513b3c 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -2563,7 +2563,7 @@ qemuMigrationVPAssociatePortProfiles(virDomainDefPtr def) { net = def->nets[i]; if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_DIRECT) { if (virNetDevVPortProfileAssociate(net->ifname, - virDomainNetGetActualDirectVirtPortProfile(net), + virDomainNetGetActualVirtPortProfile(net), net->mac, virDomainNetGetActualDirectDev(net), def->uuid, @@ -2580,7 +2580,7 @@ err_exit: net = def->nets[i]; if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_DIRECT) { ignore_value(virNetDevVPortProfileDisassociate(net->ifname, - virDomainNetGetActualDirectVirtPortProfile(net), + virDomainNetGetActualVirtPortProfile(net), net->mac, virDomainNetGetActualDirectDev(net), VIR_NETDEV_VPORT_PROFILE_OP_MIGRATE_IN_FINISH)); diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 2d92d66..9bc5436 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -62,6 +62,7 @@ #include "network/bridge_driver.h" #include "uuid.h" #include "virtime.h" +#include "virnetdevtap.h" #define VIR_FROM_THIS VIR_FROM_QEMU @@ -3604,6 +3605,7 @@ void qemuProcessStop(struct qemud_driver *driver, qemuDomainObjPrivatePtr priv = vm->privateData; virErrorPtr orig_err; virDomainDefPtr def; + virNetDevVPortProfilePtr vport = NULL; int i; int logfile = -1; char *timestamp; @@ -3724,13 +3726,19 @@ void qemuProcessStop(struct qemud_driver *driver, net->ifname, net->mac, virDomainNetGetActualDirectDev(net), virDomainNetGetActualDirectMode(net), - virDomainNetGetActualDirectVirtPortProfile(net), + virDomainNetGetActualVirtPortProfile(net), driver->stateDir)); VIR_FREE(net->ifname); } /* release the physical device (or any other resources used by * this interface in the network driver */ + vport = virDomainNetGetActualVirtPortProfile(net); + if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) + ignore_value(virNetDevOpenvswitchRemovePort( + virDomainNetGetActualBridgeName(net), + net->ifname)); + networkReleaseActualDevice(net); } diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c index 316d558..8c17578 100644 --- a/src/uml/uml_conf.c +++ b/src/uml/uml_conf.c @@ -142,7 +142,8 @@ umlConnectTapDevice(virConnectPtr conn, memcpy(tapmac, net->mac, VIR_MAC_BUFLEN); tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */ if (virNetDevTapCreateInBridgePort(bridge, &net->ifname, tapmac, - 0, true, NULL) < 0) { + 0, true, NULL, + virDomainNetGetActualVirtPortProfile(net)) < 0) { if (template_ifname) VIR_FREE(net->ifname); goto error; diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c new file mode 100644 index 0000000..24a335a --- /dev/null +++ b/src/util/virnetdevopenvswitch.c @@ -0,0 +1,135 @@ +/* + * Copyright (C) 2012 Nicira, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Authors: + * Dan Wendlandt <dan(a)nicira.com> + * Kyle Mestery <kmestery(a)cisco.com> + * Ansis Atteka <aatteka(a)nicira.com> + */ + +#include <config.h> + +#include "virnetdevopenvswitch.h" +#include "command.h" +#include "memory.h" +#include "virterror_internal.h" +#include "ignore-value.h" +#include "virmacaddr.h" + +#define VIR_FROM_THIS VIR_FROM_NONE + +/** + * virNetDevOpenvswitchAddPort: + * @brname: the bridge name + * @ifname: the network interface name + * @macaddr: the mac address of the virtual interface + * @ovsport: the ovs specific fields + * + * Add an interface to the OVS bridge + * + * Returns 0 in case of success or -1 in case of failure. + */ +int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname, + const unsigned char *macaddr, + virNetDevVPortProfilePtr ovsport) +{ + int ret = -1; + virCommandPtr cmd = NULL; + char macaddrstr[VIR_MAC_STRING_BUFLEN]; + char uuidstr[VIR_UUID_STRING_BUFLEN]; + char *attachedmac_ex_id = NULL; + char *ifaceid_ex_id = NULL; + char *profile_ex_id = NULL; + + virMacAddrFormat(macaddr, macaddrstr); + virUUIDFormat(ovsport->u.openvswitch.interfaceID, uuidstr); + + if (virAsprintf(&attachedmac_ex_id, "external-ids:attached-mac=\"%s\"", + macaddrstr) < 0) + goto cleanup; + if (virAsprintf(&ifaceid_ex_id, "external-ids:iface-id=\"%s\"", + uuidstr) < 0) + goto cleanup; + if (ovsport->u.openvswitch.profileID[0] != '\0') { + if (virAsprintf(&profile_ex_id, "external-ids:port-profile=\"%s\"", + ovsport->u.openvswitch.profileID) < 0) + goto cleanup; + } + + cmd = virCommandNew(OVSVSCTL); + if (ovsport->u.openvswitch.profileID[0] == '\0') { + virCommandAddArgList(cmd, "--", "--may-exist", "add-port", + brname, ifname, + "--", "set", "Interface", ifname, attachedmac_ex_id, + "--", "set", "Interface", ifname, ifaceid_ex_id, + "--", "set", "Interface", ifname, + "external-ids:iface-status=active", + NULL); + } else { + virCommandAddArgList(cmd, "--", "--may-exist", "add-port", + brname, ifname, + "--", "set", "Interface", ifname, attachedmac_ex_id, + "--", "set", "Interface", ifname, ifaceid_ex_id, + "--", "set", "Interface", ifname, profile_ex_id, + "--", "set", "Interface", ifname, + "external-ids:iface-status=active", + NULL); + } + + if (virCommandRun(cmd, NULL) < 0) { + virReportSystemError(VIR_ERR_INTERNAL_ERROR, + _("Unable to add port %s to OVS bridge %s"), + ifname, brname); + goto cleanup; + } + ret = 0; + + cleanup: + VIR_FREE(attachedmac_ex_id); + VIR_FREE(ifaceid_ex_id); + VIR_FREE(profile_ex_id); + virCommandFree(cmd); + return ret; +} + +/** + * virNetDevOpenvswitchRemovePort: + * @ifname: the network interface name + * + * Deletes an interface from a OVS bridge + * + * Returns 0 in case of success or -1 in case of failure. + */ +int virNetDevOpenvswitchRemovePort(const char *brname ATTRIBUTE_UNUSED, const char *ifname) +{ + int ret = -1; + virCommandPtr cmd = NULL; + + cmd = virCommandNew(OVSVSCTL); + virCommandAddArgList(cmd, "--", "--if-exists", "del-port", ifname, NULL); + + if (virCommandRun(cmd, NULL) < 0) { + virReportSystemError(VIR_ERR_INTERNAL_ERROR, + _("Unable to delete port %s from OVS"), ifname); + goto cleanup; + } + ret = 0; + + cleanup: + virCommandFree(cmd); + return ret; +} diff --git a/src/util/virnetdevopenvswitch.h b/src/util/virnetdevopenvswitch.h new file mode 100644 index 0000000..bca4c3e --- /dev/null +++ b/src/util/virnetdevopenvswitch.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2012 Nicira, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Authors: + * Dan Wendlandt <dan(a)nicira.com> + * Kyle Mestery <kmestery(a)cisco.com> + * Ansis Atteka <aatteka(a)nicira.com> + */ + +#ifndef __VIR_NETDEV_OPENVSWITCH_H__ +# define __VIR_NETDEV_OPENVSWITCH_H__ + +# include "internal.h" +# include "util.h" +# include "virnetdevvportprofile.h" + + +int virNetDevOpenvswitchAddPort(const char *brname, + const char *ifname, + const unsigned char *macaddr, + virNetDevVPortProfilePtr ovsport) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) + ATTRIBUTE_RETURN_CHECK; + +int virNetDevOpenvswitchRemovePort(const char *brname, const char *ifname) + ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK; + +#endif /* __VIR_NETDEV_OPENVSWITCH_H__ */ diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c index 2ed53c6..cd1d4c1 100644 --- a/src/util/virnetdevtap.c +++ b/src/util/virnetdevtap.c @@ -25,6 +25,7 @@ #include "virnetdevtap.h" #include "virnetdev.h" #include "virnetdevbridge.h" +#include "virnetdevopenvswitch.h" #include "virterror_internal.h" #include "virfile.h" #include "virterror_internal.h" @@ -249,6 +250,7 @@ int virNetDevTapDelete(const char *ifname ATTRIBUTE_UNUSED) * @macaddr: desired MAC address (VIR_MAC_BUFLEN long) * @vnet_hdr: whether to try enabling IFF_VNET_HDR * @tapfd: file descriptor return value for the new tap device + * @ovsport: Open vSwitch specific configuration * * This function creates a new tap device on a bridge. @ifname can be either * a fixed name or a name template with '%d' for dynamic name allocation. @@ -265,7 +267,8 @@ int virNetDevTapCreateInBridgePort(const char *brname, const unsigned char *macaddr, int vnet_hdr, bool up, - int *tapfd) + int *tapfd, + virNetDevVPortProfilePtr ovsport) { if (virNetDevTapCreate(ifname, vnet_hdr, tapfd) < 0) return -1; @@ -286,8 +289,13 @@ int virNetDevTapCreateInBridgePort(const char *brname, if (virNetDevSetMTUFromDevice(*ifname, brname) < 0) goto error; - if (virNetDevBridgeAddPort(brname, *ifname) < 0) - goto error; + if (ovsport) { + if (virNetDevOpenvswitchAddPort(brname, *ifname, macaddr, ovsport) < 0) + goto error; + } else { + if (virNetDevBridgeAddPort(brname, *ifname) < 0) + goto error; + } if (virNetDevSetOnline(*ifname, up) < 0) goto error; diff --git a/src/util/virnetdevtap.h b/src/util/virnetdevtap.h index fb35ac5..ee159f7 100644 --- a/src/util/virnetdevtap.h +++ b/src/util/virnetdevtap.h @@ -24,6 +24,7 @@ # define __VIR_NETDEV_TAP_H__ # include "internal.h" +# include "virnetdevvportprofile.h" int virNetDevTapCreate(char **ifname, int vnet_hdr, @@ -38,8 +39,10 @@ int virNetDevTapCreateInBridgePort(const char *brname, const unsigned char *macaddr, int vnet_hdr, bool up, - int *tapfd) + int *tapfd, + virNetDevVPortProfilePtr ovsport) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK; + #endif /* __VIR_NETDEV_TAP_H__ */ diff --git a/src/util/virnetdevvportprofile.c b/src/util/virnetdevvportprofile.c index faadc3a..67fd7bc 100644 --- a/src/util/virnetdevvportprofile.c +++ b/src/util/virnetdevvportprofile.c @@ -968,6 +968,7 @@ virNetDevVPortProfileAssociate(const char *macvtap_ifname, switch (virtPort->virtPortType) { case VIR_NETDEV_VPORT_PROFILE_NONE: + case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH: case VIR_NETDEV_VPORT_PROFILE_LAST: break; @@ -1027,6 +1028,7 @@ virNetDevVPortProfileDisassociate(const char *macvtap_ifname, switch (virtPort->virtPortType) { case VIR_NETDEV_VPORT_PROFILE_NONE: + case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH: case VIR_NETDEV_VPORT_PROFILE_LAST: break; diff --git a/src/util/virnetdevvportprofile.h b/src/util/virnetdevvportprofile.h index 7a8d81f..ec2d06d 100644 --- a/src/util/virnetdevvportprofile.h +++ b/src/util/virnetdevvportprofile.h @@ -35,6 +35,7 @@ enum virNetDevVPortProfile { VIR_NETDEV_VPORT_PROFILE_NONE, VIR_NETDEV_VPORT_PROFILE_8021QBG, VIR_NETDEV_VPORT_PROFILE_8021QBH, + VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH, VIR_NETDEV_VPORT_PROFILE_LAST, }; @@ -54,7 +55,7 @@ enum virNetDevVPortProfileOp { }; VIR_ENUM_DECL(virNetDevVPortProfileOp) -/* profile data for macvtap (VEPA) */ +/* profile data for macvtap (VEPA) and openvswitch */ typedef struct _virNetDevVPortProfile virNetDevVPortProfile; typedef virNetDevVPortProfile *virNetDevVPortProfilePtr; struct _virNetDevVPortProfile { @@ -69,6 +70,10 @@ struct _virNetDevVPortProfile { struct { char profileID[LIBVIRT_IFLA_VF_PORT_PROFILE_MAX]; } virtPort8021Qbh; + struct { + unsigned char interfaceID[VIR_UUID_BUFLEN]; + char profileID[LIBVIRT_IFLA_VF_PORT_PROFILE_MAX]; + } openvswitch; } u; }; -- 1.7.5.4

3 5

[libvirt] [PATCHv3 0/2] qemu: mitigate 'qemu disk buffers not flushed' problem
by Laine Stump 15 Feb '12

15 Feb '12

I previously pushed a patch that adds a new flag, VIR_DOMAIN_DESTROY_GRACEFUL, to virDomainDestroyFlags, so that a management application can destroy a domain without danger of sending SIGKILL to the qemu process too early (which occasionally results in a corrupted disk image due to qemu being unable to flush its disk buffers quickly enough). That patch will enable management applications to solve the problem by calling virDomainDestroyFlags with the new flag, and if they receive an error back from libvirtd, they can decide (or let the admin decide) when/if it is appropriate to call the more heavy-handed version of virDomainDestroy. However, that patch does *not* help those installations that are able to upgrade libvirt but have no available updated management application to install. Since the root cause of this bug is in libvirt, we need to do our best to mitigate the situation for these people. These two patches do two things: 1) Drop the driver lock while sleeping during qemuProcessKill(), so that it can wait for a longer period without locking up all other libvirtd threads. This patch is a slight re-work of a patch Eric sent to the list back in November. 2) Wait for a considerably longer period after sending SIGTERM before sending SIGKILL.

2 5

[libvirt] [PATCHv3] python: Expose virDomain{G, S}etInterfaceParameters APIs in python binding
by ajia＠redhat.com 15 Feb '12

15 Feb '12

From: Alex Jia <ajia(a)redhat.com> The v3 patch to follow latest python binding codes and change 'size' type from int to Py_ssize_t. An simple example to show how to use it: #!/usr/bin/env python import libvirt conn = libvirt.open(None) dom = conn.lookupByName('foo') print dom.interfaceParameters('vnet0', 0) params = {'outbound.peak': 10, 'inbound.peak': 10, 'inbound.burst': 20, 'inbound.average': 20, 'outbound.average': 30, 'outbound.burst': 30} print dom.setInterfaceParameters('vnet0', params, 0) print dom.interfaceParameters('vnet0', 0) Signed-off-by: Alex Jia <ajia(a)redhat.com> --- python/libvirt-override-api.xml | 16 +++++ python/libvirt-override.c | 126 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 142 insertions(+), 0 deletions(-) diff --git a/python/libvirt-override-api.xml b/python/libvirt-override-api.xml index 563dd46..ab8f33a 100644 --- a/python/libvirt-override-api.xml +++ b/python/libvirt-override-api.xml @@ -261,6 +261,22 @@ <arg name='domain' type='virDomainPtr' info='pointer to domain object'/> <arg name='flags' type='int' info='an OR'ed set of virDomainModificationImpact'/> </function> + <function name='virDomainSetInterfaceParameters' file='python'> + <info>Change the bandwidth tunables for a interface device</info> + <arg name='dom' type='virDomainPtr' info='pointer to the domain'/> + <arg name='device' type='const char *' info='interface name'/> + <arg name='params' type='virTypedParameterPtr' info='Pointer to bandwidth tuning params object'/> + <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/> + <return type='int' info='0 in case of success, -1 in case of failure'/> + </function> + <function name='virDomainGetInterfaceParameters' file='python'> + <info>Get the bandwidth tunables for a interface device</info> + <arg name='dom' type='virDomainPtr' info='pointer to the domain'/> + <arg name='device' type='const char *' info='interface name'/> + <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainModificationImpact'/> + <return type='str *' info='the bandwidth tunables value or None in case of error'/> + </function> + <function name='virConnectListStoragePools' file='python'> <info>list the storage pools, stores the pointers to the names in @names</info> <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/> diff --git a/python/libvirt-override.c b/python/libvirt-override.c index 4e8a97e..078324e 100644 --- a/python/libvirt-override.c +++ b/python/libvirt-override.c @@ -1109,6 +1109,130 @@ cleanup: } static PyObject * +libvirt_virDomainSetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) +{ + virDomainPtr domain; + PyObject *pyobj_domain, *info; + PyObject *ret = NULL; + int i_retval; + int nparams = 0; + Py_ssize_t size = 0; + unsigned int flags; + const char *device = NULL; + virTypedParameterPtr params, new_params; + + if (!PyArg_ParseTuple(args, + (char *)"OzOi:virDomainSetInterfaceParameters", + &pyobj_domain, &device, &info, &flags)) + return NULL; + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + if ((size = PyDict_Size(info)) < 0) + return NULL; + + if (size == 0) { + PyErr_Format(PyExc_LookupError, + "Need non-empty dictionary to set attributes"); + return NULL; + } + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) + return VIR_PY_INT_FAIL; + + if (nparams == 0) { + PyErr_Format(PyExc_LookupError, + "Domain has no settable attributes"); + return NULL; + } + + if (VIR_ALLOC_N(params, nparams) < 0) + return PyErr_NoMemory(); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_INT_FAIL; + goto cleanup; + } + + new_params = setPyVirTypedParameter(info, params, nparams); + if (!new_params) + goto cleanup; + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainSetInterfaceParameters(domain, device, new_params, size, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_INT_FAIL; + goto cleanup; + } + + ret = VIR_PY_INT_SUCCESS; + +cleanup: + virTypedParameterArrayClear(params, nparams); + VIR_FREE(params); + VIR_FREE(new_params); + return ret; +} + +static PyObject * +libvirt_virDomainGetInterfaceParameters(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) +{ + virDomainPtr domain; + PyObject *pyobj_domain; + PyObject *ret = NULL; + int i_retval; + int nparams = 0; + unsigned int flags; + const char *device = NULL; + virTypedParameterPtr params; + + if (!PyArg_ParseTuple(args, (char *)"Ozi:virDomainGetInterfaceParameters", + &pyobj_domain, &device, &flags)) + return NULL; + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, NULL, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) + return VIR_PY_NONE; + + if (!nparams) + return PyDict_New(); + + if (VIR_ALLOC_N(params, nparams) < 0) + return PyErr_NoMemory(); + + LIBVIRT_BEGIN_ALLOW_THREADS; + i_retval = virDomainGetInterfaceParameters(domain, device, params, &nparams, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (i_retval < 0) { + ret = VIR_PY_NONE; + goto cleanup; + } + + ret = getPyVirTypedParameter(params, nparams); + +cleanup: + virTypedParameterArrayClear(params, nparams); + VIR_FREE(params); + return ret; +} + +static PyObject * libvirt_virDomainGetVcpus(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virDomainPtr domain; @@ -5256,6 +5380,8 @@ static PyMethodDef libvirtMethods[] = { {(char *) "virDomainGetMemoryParameters", libvirt_virDomainGetMemoryParameters, METH_VARARGS, NULL}, {(char *) "virDomainSetNumaParameters", libvirt_virDomainSetNumaParameters, METH_VARARGS, NULL}, {(char *) "virDomainGetNumaParameters", libvirt_virDomainGetNumaParameters, METH_VARARGS, NULL}, + {(char *) "virDomainSetInterfaceParameters", libvirt_virDomainSetInterfaceParameters, METH_VARARGS, NULL}, + {(char *) "virDomainGetInterfaceParameters", libvirt_virDomainGetInterfaceParameters, METH_VARARGS, NULL}, {(char *) "virDomainGetVcpus", libvirt_virDomainGetVcpus, METH_VARARGS, NULL}, {(char *) "virDomainPinVcpu", libvirt_virDomainPinVcpu, METH_VARARGS, NULL}, {(char *) "virDomainPinVcpuFlags", libvirt_virDomainPinVcpuFlags, METH_VARARGS, NULL}, -- 1.7.1

3 2

[libvirt] [PATCH] Improve error reporting when virsh console is run without a TTY
by Daniel P. Berrange 15 Feb '12

15 Feb '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> If attempting to run ssh root@somehost virsh console someguest You'll get an error 2012-02-15 13:11:47.683+0000: 4765: info : libvirt version: 0.9.10, package: 1.fc18 (Unknown, 2012-02-15-11:48:57, lettuce.camlab.fab.redhat.com) 2012-02-15 13:11:47.683+0000: 4765: error : vshRunConsole:320 : unable to get tty attributes: Invalid argument Connected to domain f16x86_64 Escape character is ^] There are several problems here - The actual error message is bad for users - We shouldn't rely on VIR_ERROR for this case - The prompt makes it look like we still connected because we didn't flush stdout. * virsh.c: Flush stdout before starting console and check for a valid tty --- tools/virsh.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 66ba61c..d4d3a83 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -838,8 +838,14 @@ cmdRunConsole(vshControl *ctl, virDomainPtr dom, const char *name) goto cleanup; } + if (!isatty(STDIN_FILENO)) { + vshError(ctl, "%s", _("Cannot run interactive console without a controlling TTY")); + goto cleanup; + } + vshPrintExtra(ctl, _("Connected to domain %s\n"), virDomainGetName(dom)); vshPrintExtra(ctl, _("Escape character is %s\n"), ctl->escapeChar); + fflush(stdout); if (vshRunConsole(dom, name, ctl->escapeChar) == 0) ret = true; -- 1.7.7.6

2 1