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[libvirt] [PATCH v2] qemu: Fix domxml-to-native network model conversion
by Cole Robinson 28 Oct '12

28 Oct '12

https://bugzilla.redhat.com/show_bug.cgi?id=636832 --- v2: Don't needlessly reallocate model src/qemu/qemu_driver.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index feda4d9..7c462a2 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -5362,6 +5362,8 @@ static char *qemuDomainXMLToNative(virConnectPtr conn, for (i = 0 ; i < def->nnets ; i++) { virDomainNetDefPtr net = def->nets[i]; int bootIndex = net->info.bootIndex; + char *model = net->model; + if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) { int actualType = virDomainNetGetActualType(net); const char *brname; @@ -5418,8 +5420,10 @@ static char *qemuDomainXMLToNative(virConnectPtr conn, net->data.ethernet.dev = brname; net->data.ethernet.ipaddr = ipaddr; } + VIR_FREE(net->virtPortProfile); net->info.bootIndex = bootIndex; + net->model = model; } monitor_json = qemuCapsGet(caps, QEMU_CAPS_MONITOR_JSON); -- 1.7.11.7

2 3

[libvirt] [PATCH] build: typo fix for qemu cpu affinity
by Eric Blake 27 Oct '12

27 Oct '12

Introduced in commit 0039a32f. * src/qemu/qemu_process.c (qemuPrepareCpumap): s/covert/convert/ --- Pushing under the trivial rule. src/qemu/qemu_process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 318875d..3ac5282 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -1926,7 +1926,7 @@ qemuPrepareCpumap(struct qemud_driver *driver, bool result; if (virBitmapGetBit(nodemask, i, &result) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("Failed to covert nodeset to cpuset")); + _("Failed to convert nodeset to cpuset")); virBitmapFree(cpumap); return NULL; } -- 1.7.11.7

2 1

[libvirt] [PATCHv9 0/9] blockjob: storage migration via block-copy
by Eric Blake 27 Oct '12

27 Oct '12

v8 was here: https://www.redhat.com/archives/libvir-list/2012-October/msg01105.html A couple of patches were applied independently. Also, this post clears up some bugs, such as improperly holding the driver lock or failing to clean up properly on error, as well as some improved commit messages. Eric Blake (9): blockjob: add qemu capabilities related to block jobs blockjob: react to active block copy blockjob: return appropriate event and info blockjob: support pivot operation on cancel blockjob: make drive-reopen safer blockjob: implement block copy for qemu blockjob: allow for existing files in block-copy blockjob: allow mirroring under SELinux and cgroup blockjob: relabel entire existing chain include/libvirt/libvirt.h.in | 1 + src/conf/domain_conf.c | 12 ++ src/conf/domain_conf.h | 1 + src/libvirt.c | 7 +- src/libvirt_private.syms | 1 + src/qemu/qemu_capabilities.c | 8 + src/qemu/qemu_capabilities.h | 2 + src/qemu/qemu_driver.c | 423 ++++++++++++++++++++++++++++++++++++++++++- src/qemu/qemu_hotplug.c | 7 + src/qemu/qemu_migration.c | 5 + src/qemu/qemu_monitor.c | 56 +++++- src/qemu/qemu_monitor.h | 14 ++ src/qemu/qemu_monitor_json.c | 96 +++++++++- src/qemu/qemu_monitor_json.h | 21 ++- src/qemu/qemu_process.c | 3 + 15 files changed, 645 insertions(+), 12 deletions(-) -- 1.7.11.7

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[libvirt] [PATCH] qemu: fix attach/detach of netdevs with matching mac addrs
by Laine Stump 27 Oct '12

27 Oct '12

This resolves: https://bugzilla.redhat.com/show_bug.cgi?id=862515 which describes inconsistencies in dealing with duplicate mac addresses on network devices in a domain. (at any rate, it resolves *almost* everything, and prints out an informative error message for the one problem that isn't solved, but has a workaround.) A synopsis of the problems: 1) you can't do a persistent attach-interface of a device with a mac address that matches an existing device. 2) you *can* do a live attach-interface of such a device. 3) you *can* directly edit a domain and put in two devices with matching mac addresses. 4) When running virsh detach-device (live or config), only MAC address is checked when matching the device to remove, so the first device with the desired mac address will be removed. This isn't always the one that's wanted. 5) when running virsh detach-interface (live or config), the only two items that can be specified to match against are mac address and model type (virtio, etc) - if multiple netdevs match both of those attributes, it again just finds the first one added and assumes that is the only match. Since it is completely valid to have multiple network devices with the same MAC address (although it can cause problems in many cases, there *are* valid use cases), what is needed is: 1) remove the restriction that prohibits doing a persistent add of a netdev with a duplicate mac address. 2) enhance the backend of virDomainDetachDeviceFlags to check for something that *is* guaranteed unique (but still work with just mac address, as long as it yields only a single results. This patch does three things: 1) removes the check for duplicate mac address during a persistent netdev attach. 2) unifies the searching for both live and config detach of netdevices in the subordinate functions of qemuDomainModifyDeviceFlags() to use the new function virDomainNetFindIdx (which matches mac address and PCI address if available, checking for duplicates if only mac address was specified). This function returns -2 if multiple matches are found, allowing the callers to print out an appropriate message. Steps 1 & 2 are enough to fully fix the problem when using virsh attach-device and detach-device (which require an XML description of the device rather than a bunch of commandline args) 3) modifies the virsh detach-interface command to check for multiple matches of mac address and show an error message suggesting use of the detach-device command in cases where there are multiple matching mac addresses. Later we should decide how we want to input a PCI address on the virsh commandline, and enhance detach-interface to take a --address option, eliminating the need to use detach-device * src/conf/domain_conf.c * src/conf/domain_conf.h * src/libvirt_private.syms * added new virDomainNetFindIdx function * removed now unused virDomainNetIndexByMac and virDomainNetRemoveByMac * src/qemu/qemu_driver.c * remove check for duplicate max from qemuDomainAttachDeviceConfig * use virDomainNetFindIdx/virDomainNetRemove instead of virDomainNetRemoveByMac in qemuDomainDetachDeviceConfig * use virDomainNetFindIdx instead of virDomainIndexByMac in qemuDomainUpdateDeviceConfig * src/qemu/qemu_hotplug.c * use virDomainNetFindIdx instead of a homespun loop in qemuDomainDetachNetDevice. * tools/virsh-domain.c: modified detach-interface command as described above --- src/conf/domain_conf.c | 58 ++++++++++++++++++++++++++++++++++-------------- src/conf/domain_conf.h | 11 +++------ src/libvirt_private.syms | 3 +-- src/qemu/qemu_driver.c | 49 ++++++++++++++++++++++------------------ src/qemu/qemu_hotplug.c | 28 +++++++++++------------ tools/virsh-domain.c | 26 ++++++++++++++++------ 6 files changed, 104 insertions(+), 71 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0933c08..51a3b36 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -7993,14 +7993,49 @@ int virDomainNetInsert(virDomainDefPtr def, virDomainNetDefPtr net) return 0; } -int virDomainNetIndexByMac(virDomainDefPtr def, const virMacAddrPtr mac) +/* virDomainNetFindIdx: search according to mac address and guest side + * PCI address (if specified) + * + * Return: index of match if unique match found + * -1 if not found + * -2 if multiple matches + */ +int +virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net) { - int i; + int ii, matchidx = -1; + bool PCIAddrSpecified = virDomainDeviceAddressIsValid(&net->info, + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI); - for (i = 0; i < def->nnets; i++) - if (!virMacAddrCmp(&def->nets[i]->mac, mac)) - return i; - return -1; + for (ii = 0 ; ii < def->nnets ; ii++) { + if (virMacAddrCmp(&def->nets[ii]->mac, &net->mac)) + continue; + + if ((matchidx >= 0) && !PCIAddrSpecified) { + /* there were multiple matches on mac address, and no + * qualifying guest-side PCI address was given, so we must + * fail (NB: a USB address isn't adequate, since it may + * specify only vendor and product ID, and there may be + * multiples of those. + */ + matchidx = -2; /* indicates "multiple matches" to caller */ + break; + } + if (PCIAddrSpecified) { + if (virDevicePCIAddressEqual(&def->nets[ii]->info.addr.pci, + &net->info.addr.pci)) { + /* exit early if the pci address was specified and + * it matches, as this guarantees no duplicates. + */ + matchidx = ii; + break; + } + } else { + /* no PCI address given, so there may be multiple matches */ + matchidx = ii; + } + } + return matchidx; } virDomainNetDefPtr @@ -8038,17 +8073,6 @@ virDomainNetRemove(virDomainDefPtr def, size_t i) return net; } -virDomainNetDefPtr -virDomainNetRemoveByMac(virDomainDefPtr def, const virMacAddrPtr mac) -{ - int i = virDomainNetIndexByMac(def, mac); - - if (i < 0) - return NULL; - return virDomainNetRemove(def, i); -} - - int virDomainControllerInsert(virDomainDefPtr def, virDomainControllerDefPtr controller) { diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 4151bc2..4c84cb5 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -2009,12 +2009,10 @@ virDomainDiskRemove(virDomainDefPtr def, size_t i); virDomainDiskDefPtr virDomainDiskRemoveByName(virDomainDefPtr def, const char *name); -int virDomainNetIndexByMac(virDomainDefPtr def, const virMacAddrPtr mac); +int virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net); +virDomainNetDefPtr virDomainNetFind(virDomainDefPtr def, const char *device); int virDomainNetInsert(virDomainDefPtr def, virDomainNetDefPtr net); -virDomainNetDefPtr -virDomainNetRemove(virDomainDefPtr def, size_t i); -virDomainNetDefPtr -virDomainNetRemoveByMac(virDomainDefPtr def, const virMacAddrPtr mac); +virDomainNetDefPtr virDomainNetRemove(virDomainDefPtr def, size_t i); int virDomainHostdevInsert(virDomainDefPtr def, virDomainHostdevDefPtr hostdev); virDomainHostdevDefPtr @@ -2274,9 +2272,6 @@ VIR_ENUM_DECL(virDomainCpuPlacementMode) VIR_ENUM_DECL(virDomainStartupPolicy) -virDomainNetDefPtr virDomainNetFind(virDomainDefPtr def, - const char *device); - # define VIR_CONNECT_LIST_DOMAINS_FILTERS_ACTIVE \ (VIR_CONNECT_LIST_DOMAINS_ACTIVE | \ VIR_CONNECT_LIST_DOMAINS_INACTIVE) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 699c9a3..ce6b9d1 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -433,6 +433,7 @@ virDomainMemDumpTypeFromString; virDomainMemDumpTypeToString; virDomainNetDefFree; virDomainNetFind; +virDomainNetFindIdx; virDomainNetGetActualBandwidth; virDomainNetGetActualBridgeName; virDomainNetGetActualDirectDev; @@ -441,10 +442,8 @@ virDomainNetGetActualHostdev; virDomainNetGetActualType; virDomainNetGetActualVirtPortProfile; virDomainNetGetActualVlan; -virDomainNetIndexByMac; virDomainNetInsert; virDomainNetRemove; -virDomainNetRemoveByMac; virDomainNetTypeToString; virDomainNostateReasonTypeFromString; virDomainNostateReasonTypeToString; diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 254f191..3838c36 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -6158,14 +6158,6 @@ qemuDomainAttachDeviceConfig(qemuCapsPtr caps, case VIR_DOMAIN_DEVICE_NET: net = dev->data.net; - if (virDomainNetIndexByMac(vmdef, &net->mac) >= 0) { - char macbuf[VIR_MAC_STRING_BUFLEN]; - - virMacAddrFormat(&net->mac, macbuf); - virReportError(VIR_ERR_INVALID_ARG, - _("mac %s already exists"), macbuf); - return -1; - } if (virDomainNetInsert(vmdef, net)) { virReportOOMError(); return -1; @@ -6237,11 +6229,12 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev) { virDomainDiskDefPtr disk, det_disk; - virDomainNetDefPtr net, det_net; + virDomainNetDefPtr net; virDomainHostdevDefPtr hostdev, det_hostdev; virDomainLeaseDefPtr lease, det_lease; virDomainControllerDefPtr cont, det_cont; int idx; + char mac[VIR_MAC_STRING_BUFLEN]; switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: @@ -6256,15 +6249,19 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef, case VIR_DOMAIN_DEVICE_NET: net = dev->data.net; - if (!(det_net = virDomainNetRemoveByMac(vmdef, &net->mac))) { - char macbuf[VIR_MAC_STRING_BUFLEN]; - - virMacAddrFormat(&net->mac, macbuf); - virReportError(VIR_ERR_INVALID_ARG, - _("no nic of mac %s"), macbuf); + idx = virDomainNetFindIdx(vmdef, net); + if (idx == -2) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("multiple devices matching mac address %s found"), + virMacAddrFormat(&net->mac, mac)); + return -1; + } else if (idx < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("no matching network device was found")); return -1; } - virDomainNetDefFree(det_net); + /* this is guaranteed to succeed */ + virDomainNetDefFree(virDomainNetRemove(vmdef, idx)); break; case VIR_DOMAIN_DEVICE_HOSTDEV: { @@ -6319,6 +6316,8 @@ qemuDomainUpdateDeviceConfig(qemuCapsPtr caps, virDomainDiskDefPtr orig, disk; virDomainNetDefPtr net; int pos; + char mac[VIR_MAC_STRING_BUFLEN]; + switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: @@ -6356,12 +6355,18 @@ qemuDomainUpdateDeviceConfig(qemuCapsPtr caps, case VIR_DOMAIN_DEVICE_NET: net = dev->data.net; - if ((pos = virDomainNetIndexByMac(vmdef, &net->mac)) < 0) { - char macbuf[VIR_MAC_STRING_BUFLEN]; - - virMacAddrFormat(&net->mac, macbuf); - virReportError(VIR_ERR_INVALID_ARG, - _("mac %s doesn't exist"), macbuf); + pos = virDomainNetFindIdx(vmdef, net); + if (pos == -2) { + virMacAddrFormat(&net->mac, mac); + virReportError(VIR_ERR_OPERATION_FAILED, + _("couldn't find matching device " + "with mac address %s"), mac); + return -1; + } else if (pos < 0) { + virMacAddrFormat(&net->mac, mac); + virReportError(VIR_ERR_OPERATION_FAILED, + _("couldn't find matching device " + "with mac address %s"), mac); return -1; } diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 7381921..0225654 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -2448,30 +2448,28 @@ qemuDomainDetachNetDevice(struct qemud_driver *driver, virDomainObjPtr vm, virDomainDeviceDefPtr dev) { - int i, ret = -1; + int detachidx, ret = -1; virDomainNetDefPtr detach = NULL; qemuDomainObjPrivatePtr priv = vm->privateData; int vlan; char *hostnet_name = NULL; + char mac[VIR_MAC_STRING_BUFLEN]; virNetDevVPortProfilePtr vport = NULL; - for (i = 0 ; i < vm->def->nnets ; i++) { - virDomainNetDefPtr net = vm->def->nets[i]; - - if (!virMacAddrCmp(&net->mac, &dev->data.net->mac)) { - detach = net; - break; + detachidx = virDomainNetFindIdx(vm->def, dev->data.net) + if (detachidx == -2) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("multiple devices matching mac address %s found"), + virMacAddrFormat(&dev->data.net->mac, mac)); + goto cleanup; } - } - - if (!detach) { + else if (detachidx < 0) { virReportError(VIR_ERR_OPERATION_FAILED, - _("network device %02x:%02x:%02x:%02x:%02x:%02x not found"), - dev->data.net->mac.addr[0], dev->data.net->mac.addr[1], - dev->data.net->mac.addr[2], dev->data.net->mac.addr[3], - dev->data.net->mac.addr[4], dev->data.net->mac.addr[5]); + _("network device %s not found"), + virMacAddrFormat(&dev->data.net->mac, mac)); goto cleanup; } + detach = vm->def->nets[detachidx]; if (virDomainNetGetActualType(detach) == VIR_DOMAIN_NET_TYPE_HOSTDEV) { ret = qemuDomainDetachThisHostDevice(driver, vm, @@ -2575,7 +2573,7 @@ qemuDomainDetachNetDevice(struct qemud_driver *driver, cleanup: if (!ret) { networkReleaseActualDevice(detach); - virDomainNetRemove(vm->def, i); + virDomainNetRemove(vm->def, detachidx); virDomainNetDefFree(detach); } VIR_FREE(hostnet_name); diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 0906267..0daaeb4 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -7692,7 +7692,7 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) xmlDocPtr xml = NULL; xmlXPathObjectPtr obj=NULL; xmlXPathContextPtr ctxt = NULL; - xmlNodePtr cur = NULL; + xmlNodePtr cur = NULL, matchNode = NULL; xmlBufferPtr xml_buf = NULL; const char *mac =NULL, *type = NULL; char *doc; @@ -7738,10 +7738,12 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) goto cleanup; } - if (!mac) + if (!mac) { + matchNode = obj->nodesetval->nodeTab[0]; goto hit; + } - /* search mac */ + /* multiple possibilities, so search for matching mac */ for (; i < obj->nodesetval->nodeNr; i++) { cur = obj->nodesetval->nodeTab[i]->children; while (cur != NULL) { @@ -7751,14 +7753,24 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) diff_mac = virMacAddrCompare(tmp_mac, mac); VIR_FREE(tmp_mac); if (!diff_mac) { - goto hit; + if (matchNode) { + /* this is the 2nd match, so it's ambiguous */ + vshError(ctl, _("Domain has multiple interfaces matching " + "mac address %s. You must use detach-device and " + "specify the device pci address to remove it."), + mac); + goto cleanup; + } + matchNode = obj->nodesetval->nodeTab[i]; } } cur = cur->next; } } - vshError(ctl, _("No found interface whose MAC address is %s"), mac); - goto cleanup; + if (!matchNode) { + vshError(ctl, _("No found interface whose MAC address is %s"), mac); + goto cleanup; + } hit: xml_buf = xmlBufferCreate(); @@ -7767,7 +7779,7 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) goto cleanup; } - if (xmlNodeDump(xml_buf, xml, obj->nodesetval->nodeTab[i], 0, 0) < 0) { + if (xmlNodeDump(xml_buf, xml, matchNode, 0, 0) < 0) { vshError(ctl, "%s", _("Failed to create XML")); goto cleanup; } -- 1.7.11.7

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[libvirt] [PATCHv2] cpustat: fix regression when cpus are offline
by Eric Blake 27 Oct '12

27 Oct '12

It turns out that the cpuacct results properly account for offline cpus, and always returns results for every possible cpu, not just the online ones. So there is no need to check the map of online cpus in the first place, merely only a need to know the maximum possible cpu. Meanwhile, virNodeGetCPUBitmap had a subtle change from returning the maximum id to instead returning the width of the bitmap (one larger than the maximum id) in commit 2f4c5338, which made this code encounter some off-by-one logic leading to bad error messages when a cpu was offline: $ virsh cpu-stats dom error: Failed to virDomainGetCPUStats() error: An error occurred, but the cause is unknown Cleaning this up unraveled a chain of other unused variables. * src/qemu/qemu_driver.c (qemuDomainGetPercpuStats): Drop pointless check for cpumap changes, and use correct number of cpus. Simplify signature. (qemuDomainGetCPUStats): Adjust caller. * src/nodeinfo.h (nodeGetCPUCount): New prototype. (nodeGetCPUBitmap): Drop unused parameter. * src/nodeinfo.c (nodeGetCPUBitmap): Likewise. (nodeGetCPUMap): Adjust caller. (nodeGetCPUCount): New function. * src/libvirt_private.syms (nodeinfo.h): Export it. --- v2: add new function for determining just host cpu count, and do even more cleanups based on unused variables src/libvirt_private.syms | 1 + src/nodeinfo.c | 30 +++++++++++++++++++++++------- src/nodeinfo.h | 4 ++-- src/qemu/qemu_driver.c | 39 ++++++++------------------------------- 4 files changed, 34 insertions(+), 40 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 80bdf99..f350493 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -908,6 +908,7 @@ virNodeDeviceObjUnlock; # nodeinfo.h nodeCapsInitNUMA; nodeGetCPUBitmap; +nodeGetCPUCount; nodeGetCPUMap; nodeGetCPUStats; nodeGetCellsFreeMemory; diff --git a/src/nodeinfo.c b/src/nodeinfo.c index 8b494df..b0be3ed 100644 --- a/src/nodeinfo.c +++ b/src/nodeinfo.c @@ -949,9 +949,24 @@ int nodeGetMemoryStats(virConnectPtr conn ATTRIBUTE_UNUSED, #endif } +int +nodeGetCPUCount(void) +{ +#ifdef __linux__ + /* XXX should we also work on older kernels, like RHEL5, that lack + * cpu/present and cpu/online files? Those kernels also lack cpu + * hotplugging, so it would be a matter of finding the largest + * cpu/cpuNN directory, and returning NN + 1 */ + return linuxParseCPUmax(SYSFS_SYSTEM_PATH "/cpu/present"); +#else + virReportError(VIR_ERR_NO_SUPPORT, "%s", + _("host cpu counting not implemented on this platform")); + return NULL; +#endif +} + virBitmapPtr -nodeGetCPUBitmap(virConnectPtr conn ATTRIBUTE_UNUSED, - int *max_id ATTRIBUTE_UNUSED) +nodeGetCPUBitmap(int *max_id ATTRIBUTE_UNUSED) { #ifdef __linux__ virBitmapPtr cpumap; @@ -1249,10 +1264,11 @@ nodeGetMemoryParameters(virConnectPtr conn ATTRIBUTE_UNUSED, #endif } -int nodeGetCPUMap(virConnectPtr conn, - unsigned char **cpumap, - unsigned int *online, - unsigned int flags) +int +nodeGetCPUMap(virConnectPtr conn ATTRIBUTE_UNUSED, + unsigned char **cpumap, + unsigned int *online, + unsigned int flags) { virBitmapPtr cpus = NULL; int maxpresent; @@ -1261,7 +1277,7 @@ int nodeGetCPUMap(virConnectPtr conn, virCheckFlags(0, -1); - if (!(cpus = nodeGetCPUBitmap(conn, &maxpresent))) + if (!(cpus = nodeGetCPUBitmap(&maxpresent))) goto cleanup; if (cpumap && virBitmapToData(cpus, cpumap, &dummy) < 0) diff --git a/src/nodeinfo.h b/src/nodeinfo.h index 44aa55d..350f3c3 100644 --- a/src/nodeinfo.h +++ b/src/nodeinfo.h @@ -46,8 +46,8 @@ int nodeGetCellsFreeMemory(virConnectPtr conn, int maxCells); unsigned long long nodeGetFreeMemory(virConnectPtr conn); -virBitmapPtr nodeGetCPUBitmap(virConnectPtr conn, - int *max_id); +virBitmapPtr nodeGetCPUBitmap(int *max_id); +int nodeGetCPUCount(void); int nodeGetMemoryParameters(virConnectPtr conn, virTypedParameterPtr params, diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 18be7d9..8cb92b6 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -13588,16 +13588,13 @@ cleanup: } static int -qemuDomainGetPercpuStats(virDomainPtr domain, - virDomainObjPtr vm, +qemuDomainGetPercpuStats(virDomainObjPtr vm, virCgroupPtr group, virTypedParameterPtr params, unsigned int nparams, int start_cpu, unsigned int ncpus) { - virBitmapPtr map = NULL; - virBitmapPtr map2 = NULL; int rv = -1; int i, id, max_id; char *pos; @@ -13609,19 +13606,18 @@ qemuDomainGetPercpuStats(virDomainPtr domain, virTypedParameterPtr ent; int param_idx; unsigned long long cpu_time; - bool result; /* return the number of supported params */ if (nparams == 0 && ncpus != 0) return QEMU_NB_PER_CPU_STAT_PARAM; - /* To parse account file, we need bitmap of online cpus. */ - map = nodeGetCPUBitmap(domain->conn, &max_id); - if (!map) + /* To parse account file, we need to know how many cpus are present. */ + max_id = nodeGetCPUCount(); + if (max_id < 0) return rv; if (ncpus == 0) { /* returns max cpu ID */ - rv = max_id + 1; + rv = max_id; goto cleanup; } @@ -13648,11 +13644,7 @@ qemuDomainGetPercpuStats(virDomainPtr domain, id = start_cpu + ncpus - 1; for (i = 0; i <= id; i++) { - if (virBitmapGetBit(map, i, &result) < 0) - goto cleanup; - if (!result) { - cpu_time = 0; - } else if (virStrToLong_ull(pos, &pos, 10, &cpu_time) < 0) { + if (virStrToLong_ull(pos, &pos, 10, &cpu_time) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("cpuacct parse error")); goto cleanup; @@ -13680,22 +13672,9 @@ qemuDomainGetPercpuStats(virDomainPtr domain, if (getSumVcpuPercpuStats(group, priv->nvcpupids, sum_cpu_time, n) < 0) goto cleanup; - /* Check that the mapping of online cpus didn't change mid-parse. */ - map2 = nodeGetCPUBitmap(domain->conn, &max_id); - if (!map2 || !virBitmapEqual(map, map2)) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("the set of online cpus changed while reading")); - goto cleanup; - } - sum_cpu_pos = sum_cpu_time; for (i = 0; i <= id; i++) { - if (virBitmapGetBit(map, i, &result) < 0) - goto cleanup; - if (!result) - cpu_time = 0; - else - cpu_time = *(sum_cpu_pos++); + cpu_time = *(sum_cpu_pos++); if (i < start_cpu) continue; if (virTypedParameterAssign(&params[(i - start_cpu) * nparams + @@ -13710,8 +13689,6 @@ qemuDomainGetPercpuStats(virDomainPtr domain, cleanup: VIR_FREE(sum_cpu_time); VIR_FREE(buf); - virBitmapFree(map); - virBitmapFree(map2); return rv; } @@ -13763,7 +13740,7 @@ qemuDomainGetCPUStats(virDomainPtr domain, if (start_cpu == -1) ret = qemuDomainGetTotalcpuStats(group, params, nparams); else - ret = qemuDomainGetPercpuStats(domain, vm, group, params, nparams, + ret = qemuDomainGetPercpuStats(vm, group, params, nparams, start_cpu, ncpus); cleanup: virCgroupFree(&group); -- 1.7.11.7

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[libvirt] [PATCH] build: fix type-punning bug
by Eric Blake 27 Oct '12

27 Oct '12

With older gcc and 64-bit size_t, the compiler issues a real warning: rpc/virnetserverservice.c:277: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] Introduced in commit 0cc79255. Depending on machine endianness, this warning represents a real bug that could mis-interpret the value by a factor of 2^32. I don't know why newer gcc didn't bother to warn. * src/rpc/virnetserverservice.c (virNetServerServiceNewPostExecRestart): Use temporary instead. --- src/rpc/virnetserverservice.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/rpc/virnetserverservice.c b/src/rpc/virnetserverservice.c index 8ac523c..31a9424 100644 --- a/src/rpc/virnetserverservice.c +++ b/src/rpc/virnetserverservice.c @@ -1,7 +1,7 @@ /* * virnetserverservice.c: generic network RPC server service * - * Copyright (C) 2006-2011 Red Hat, Inc. + * Copyright (C) 2006-2012 Red Hat, Inc. * Copyright (C) 2006 Daniel P. Berrange * * This library is free software; you can redistribute it and/or @@ -274,11 +274,12 @@ virNetServerServicePtr virNetServerServiceNewPostExecRestart(virJSONValuePtr obj goto error; } if (virJSONValueObjectGetNumberUint(object, "nrequests_client_max", - (unsigned int *)&svc->nrequests_client_max) < 0) { + &n) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Missing nrequests_client_max field in JSON state document")); goto error; } + svc->nrequests_client_max = n; if (!(socks = virJSONValueObjectGet(object, "socks"))) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", -- 1.7.11.7

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[libvirt] Another curiosity question
by Gene Czarcinski 26 Oct '12

26 Oct '12

All doc and the libvirt software itself is very insistent that dhcp4 will be supported on one and only one IPv4 subnetwork. Why is true? Certainly dnsmasq supports multiple dhcp-range definitions and the actual parameters passed to dnsmasq would be more or less the same! I can understand some restriction if there were systems libvirt suports which does not support the multi-dhcp per interface but not the blanket restriction. This, this is OK: ------------------------------------------------------ <ip address='172.16.6.1' prefix='16'> <dhcp> <range start='172.16.6.128' end='172.16.6.254' /> <range start='172.16.7.128' end='172.16.7.254' /> </dhcp> </ip> ------------------------------------------------------ but this is not: ------------------------------------------------------ <ip address='172.16.6.1' prefix='16'> <dhcp> <range start='172.16.6.128' end='172.16.6.254' /> <range start='172.16.7.128' end='172.16.7.254' /> </dhcp> </ip> <ip address='172.16.7.1' prefix='16'> <dhcp> <range start='172.16.7.128' end='172.16.7.254' /> </dhcp> </ip> ------------------------------------------------------ In both cases, the parameters passed to dnsmasq are: ---------------------------------------------------- dhcp-range=172.16.6.128,172.16.6.254 dhcp-range=172.16.7.128,172.16.7.254 ---------------------------------------------------- and, for dhcp, dnsmasq does not care about the specific addresses since it does its own filtering by listening on 0.0.0.0:67/68 Comments? Gene

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[libvirt] [PATCH] virsh: Fix POD syntax
by Jiri Denemark 26 Oct '12

26 Oct '12

The first two hunks fix "Unterminated I<...> sequence" error and the last one fixes "’=item’ outside of any ’=over’" error. --- tools/virsh.pod | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/tools/virsh.pod b/tools/virsh.pod index 61822bb..07d6a67 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -737,7 +737,7 @@ I<bandwidth> specifies copying bandwidth limit in MiB/s, although for qemu, it may be non-zero only for an online domain. =item B<blockcopy> I<domain> I<path> I<dest> [I<bandwidth>] [I<--shallow>] -[I<--reuse-external>] [I<--raw>] [I<--wait> [I<--verbose] +[I<--reuse-external>] [I<--raw>] [I<--wait> [I<--verbose>] [{I<--pivot> | I<--finish>}] [I<--timeout> B<seconds>] [I<--async>]] Copy a disk backing image chain to I<dest>. By default, this command @@ -778,7 +778,7 @@ I<path> specifies fully-qualified path of the disk. I<bandwidth> specifies copying bandwidth limit in MiB/s. =item B<blockpull> I<domain> I<path> [I<bandwidth>] [I<base>] -[I<--wait> [I<--verbose>] [I<--timeout> B<seconds>] [I<--async]] +[I<--wait> [I<--verbose>] [I<--timeout> B<seconds>] [I<--async>]] Populate a disk from its backing image chain. By default, this command flattens the entire chain; but if I<base> is specified, containing the @@ -2943,8 +2943,6 @@ and the monitor uses QMP, then the output will be pretty-printed. If more than one argument is provided for I<command>, they are concatenated with a space in between before passing the single command to the monitor. -=back - =item B<qemu-agent-command> I<domain> [I<--timeout> I<seconds> | I<--async> | I<--block>] I<command>... Send an arbitrary guest agent command I<command> to domain I<domain> through -- 1.7.12.4

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[libvirt] [PATCH v2 0/2] Qemu/Gluster support in Libvirt
by Harsh Prateek Bora 26 Oct '12

26 Oct '12

This patchset provides support for Gluster protocol based network disks. Changelog: v2: - Addressed review comments by Jiri - Updated patcheset as per new URI spec Ref: http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg05199.html v1: - Initial prototype Harsh Prateek Bora (2): Qemu/Gluster: Add Gluster protocol as supported network disk formats. tests: Add tests for gluster protocol based network disks support docs/schemas/domaincommon.rng | 8 + src/conf/domain_conf.c | 28 ++- src/conf/domain_conf.h | 11 ++ src/libvirt_private.syms | 2 + src/qemu/qemu_command.c | 204 +++++++++++++++++++++ tests/qemuargv2xmltest.c | 1 + .../qemuxml2argv-disk-drive-network-gluster.args | 1 + .../qemuxml2argv-disk-drive-network-gluster.xml | 33 ++++ tests/qemuxml2argvtest.c | 2 + 9 files changed, 288 insertions(+), 2 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-gluster.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-gluster.xml -- 1.7.11.4

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[libvirt] [PATCH] parallels: fix build for some older compilers
by Laine Stump 26 Oct '12

26 Oct '12

Found this when building on RHEL5: parallels/parallels_storage.c: In function 'parallelsStorageOpen': parallels/parallels_storage.c:180: error: 'for' loop initial declaration used outside C99 mode (and similar error in parallels_driver.c). This was in spite of configuring with "-Wno-error". --- Pushed under the build-breaker rule. src/parallels/parallels_driver.c | 6 ++++-- src/parallels/parallels_storage.c | 4 +++- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/src/parallels/parallels_driver.c b/src/parallels/parallels_driver.c index e8af89c..62db626 100644 --- a/src/parallels/parallels_driver.c +++ b/src/parallels/parallels_driver.c @@ -1256,14 +1256,16 @@ static int parallelsApplySerialParams(virDomainChrDefPtr *oldserials, int nold, virDomainChrDefPtr *newserials, int nnew) { + int i, j; + if (nold != nnew) goto error; - for (int i = 0; i < nold; i++) { + for (i = 0; i < nold; i++) { virDomainChrDefPtr oldserial = oldserials[i]; virDomainChrDefPtr newserial = NULL; - for (int j = 0; j < nnew; j++) { + for (j = 0; j < nnew; j++) { if (newserials[j]->target.port == oldserial->target.port) { newserial = newserials[j]; break; diff --git a/src/parallels/parallels_storage.c b/src/parallels/parallels_storage.c index 112e288..76d885c 100644 --- a/src/parallels/parallels_storage.c +++ b/src/parallels/parallels_storage.c @@ -123,6 +123,8 @@ parallelsStorageOpen(virConnectPtr conn, virStorageDriverStatePtr storageState; int privileged = (geteuid() == 0); parallelsConnPtr privconn = conn->privateData; + size_t i; + virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR); if (STRNEQ(conn->driver->name, "Parallels")) @@ -176,7 +178,7 @@ parallelsStorageOpen(virConnectPtr conn, goto error; } - for (size_t i = 0; i < privconn->pools.count; i++) { + for (i = 0; i < privconn->pools.count; i++) { virStoragePoolObjLock(privconn->pools.objs[i]); virStoragePoolObjPtr pool; -- 1.7.11.7

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