September 2013 - Devel - libvirt List Archives

[libvirt] Operation not permitted when start vm
by yue 18 Sep '13

18 Sep '13

hi,all please look at the error. env: libvirt-0.10.2-18.el6_4.5.x86_64 2.6.32-358.6.2.el6.x86_64 centos6.4 Thread-6291::ERROR::2013-09-18 12:44:21,205::vm::683::vm.Vm::(_startUnderlyingVm) vmId=`24f7e975-9aa5-4a14-b0f0-590add14c8b5`::The vm start process failed Traceback (most recent call last): File "/us r/share/vdsm/vm.py", line 645, in _startUnderlyingVm self._run() File "/usr/share/vdsm/libvirtvm.py", line 1529, in _run self._connection.createXML(domxml, flags), File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 83, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.6/site-packages/libvirt.py", line 2645, in createXML if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) libvirtError: internal error Process exited while reading console log output: char device redirected to /dev/pts/4 qemu-kvm: -drive file=/rhev/data-center/7828f2ae-955e-4e4b-a4bb-43807629dc52/d028d521-d4a9-4dd7-a0fe-3e9b60e7c4e4/images/ac025dc1-4e25-4b71-8c56-88dcb61b9f09/cae1bb2d-0529-4287-95a3-13dcb14f082f,if=none,id=drive-ide0-0-0,format=qcow2,serial=ac025dc1-4e25-4b71-8c56-88dcb61b9f09,cache=none,werror=stop,rerror=stop,aio=n ative: could not open disk image /rhev/data-center/7828f2ae-955e-4e4b-a4bb-43807629dc52/d028d521-d4a9-4dd7-a0fe-3e9b60e7c4e4/images/ac025dc1-4e25-4b71-8c56-88dcb61b9f09/cae1bb2d-0529-4287-95a3-13dcb14f082f: Operation not permitted

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[libvirt] Doc v2: How to use NPIV in libvirt
by Osier Yang 18 Sep '13

18 Sep '13

Thanks for John Ferlan's lots of internal feedbacks, I believe it's more readable, and better orgnized now. Should we create a page for it under http://libvirt.org/deployment.html or add it in WIKI? ========================================== NPIV in libvirt NPIV (N_Port ID Virtualization) is a Fibre Channel technology to share a single physical Fibre Channel HBA with multiple virtual ports. Henceforth known as a "virtual port" or "virtual Host Bus Adapter" (vHBA), each virtual port is identified by its own WWPN (Word Wide Port Name) and WWNN (Word Wide Node Name). In the virtualization world the vHBA controls the LUNs for virtual machines. The libvirt implementation provides flexibility to configure the LUN's either directly to the virtual machine or as part of a storage pool which then can be configured for use on a virtual machine. NPIV support in libvirt was first added to libvirt 0.6.5; however, the following sections will primarily describe NPIV functionality as of the current libvirt release, 1.1.2. There will be a troubleshooting and prior version considerations section to describe some historical differences. 1) Discovery Discovery of HBA(s) capable of NPIV is provided through the virsh command 'virsh nodedev-list --cap vports'. If no HBA is returned, then the host configuration should be checked. The XML output from the command "virsh nodedev-dumpxml" will list fields <name>, <wwnn>, and <wwpn> to be used in order to create a vHBA. Take care to also note the <max_vports> value as this lets you know if the HBA is going to exceed the maximum vHBA supported. The following output indicates a host that has two HBAs to support vHBA and the layout of a HBA's XML: # virsh nodedev-list --cap vports scsi_host4 scsi_host5 # virsh nodedev-dumpxml scsi_host5 <device> <name>scsi_host5</name> <parent>pci_0000_04_00_1</parent> <capability type='scsi_host'> <host>5</host> <capability type='fc_host'> <wwnn>2001001b32a9da4e</wwnn> <wwpn>2101001b32a9da4e</wwpn> <fabric_wwn>2001000dec9877c1</fabric_wwn> </capability> <capability type='vport_ops'> <max_vports>164</max_vports> <vports>5</vports> </capability> </capability> </device> The "max_vports" value indicates there are a possible of 164 vports available for use in the HBA configuration. The "vports" value indicates the number of vports currently being used. Support for detection of HBA's capable of NPIV support prior to libvirt 1.0.4 is described in the "Troubleshooting" section. 2) Creation of a vHBA using the node device driver In order to create a vHBA using the node device driver, select an HBA with available "vport" space, use the HBA "<name>" field as the "<parent>" field in the following XML: <device> <parent>scsi_host5</parent> <capability type='scsi_host'> <capability type='fc_host'> </capability> </capability> </device> Then create the vHBA with the command "virsh nodedev-create" (assuming above XML file is named "vhba.xml"): # virsh nodedev-create vhba.xml Node device scsi_host6 created from vhba.xml NOTE: If you specify "name" for the vHBA, then it will be ignored. The kernel will automatically pick the next SCSI host name in sequence not already used. The "wwpn" and "wwnn" values will be automatically generated by libvirt. In order to see the generated vHBA XML, use the command "virsh nodedev-dumpxml" as follows: # virsh nodedev-dumpxml scsi_host6 <device> <name>scsi_host6</name> <parent>scsi_host5</parent> <capability type='scsi_host'> <capability type='fc_host'> <wwnn>2001001b32a9da5e</wwnn> <wwpn>2101001b32a9da5e</wwpn> </capability> </capability> </device> This vHBA will only be defined as long the host is not rebooted. In order to create a persistent vHBA, one must use a libvirt storage pool (see next section). 3) Creation of vHBA by the storage pool By design, vHBAs managed by the node device driver are transient across host reboots. It is recommended to define a libvirt storage pool based on the vHBA in order to preserve the vHBA configuration. Using a storage pool has two primary advantage, first the libvirt code will find the LUN's path via simple virsh command output and second migration of virtual machine's requires only defining and starting a storage pool with the same vHBA name on the target machine if you use the LUN with libvirt storage pool and volume name in virtual machine config (see section 5). In order to create a persistent vHBA configuration create a libvirt 'scsi' storage pool using the XML as follows: <pool type='scsi'> <name>poolvhba0</name> <source> <adapter type='fc_host' wwnn='20000000c9831b4b' wwpn='10000000c9831b4b'/> </source> <target> <path>/dev/disk/by-path</path> <permissions> <mode>0700</mode> <owner>0</owner> <group>0</group> </permissions> </target> </pool> You must use the "type='scsi'" for the pool; The source adapter type must be "fc_host". Attributes "wwnn" and "wwpn" are provided as the unique identifier for the vHBA to be created. There is an optional attribute "parent" for source the adapter. It indicates the name of the HBA which you want to use to create the vHBA. Its value should be consistent with what node device driver dumps (e.g. scsi_host5). If it's not specified, libvirt will pick the first HBA capable of NPIV that has not exceeded the maximum vports it supports. NOTE: You can also create a scsi pool with source adapter type "fc_host" for a HBA, and in that case the attribute "parent" is not necessary. If you prefer to choose which parent HBA to use for your vHBA, then you must provide the parent, wwnn, and wwpn in the source adapter XML as follows: <source> <adapter type='fc_host' parent='scsi_host5' wwnn='20000000c9831b4b' wwpn='10000000c9831b4b'/> </source> To define the persistent pool (assuming above XML is named as poolvhba0.xml): # virsh pool-define poolvhba0.xml NOTE: One must use pool-define to define the pool as persistent, since a pool created by pool-create is transient and it will disappear after a system reboot or a libvirtd restart. To start the pool: # virsh pool-start poolvhba0 To destroy the pool: # virsh pool-destroy poolvhba0 When starting the pool, libvirt will check if the vHBA with same "wwpn:wwpn" already exists. If it does not exist, a new vHBA with the provided "wwpn:wwnn" will be created. Correspondingly，when destroying the pool the vHBA is destroyed too. Finally, in order to ensure that subsequent reboots of your host will automatically define vHBA's for use in virtual machines, one must set the storage pool autostart feature as follows (assuming the name of the created pool was "poolvhba0"): # virsh pool-autostart poolvhba0 4) Finding LUNs on your vHBA 4.1) Utilizing LUN's from a vHBA created by the storage pool Assuming that a storage pool was created for a vHBA, use the command "virsh vol-list" command in order to generate a list of available LUN's on the vHBA, as follows: # virsh vol-list poolvhba0 --details Name Path --------------------------------------------------------------------- unit:0:2:0 /dev/disk/by-path/pci-0000:04:00.1-fc-0x203500a0b85ad1d7-lun-0 block The list of LUN names displayed will be available for use as disk volumes in virtual machine configurations. 4.2) Utilizing LUN's from a vHBA created using the node device driver Finding an available LUN from a vHBA created using the node device driver can be achieved either via use of the "virsh nodedev-list" command or through manual searching of the hosts system file system. Use the "virsh nodedev-list --tree | more" and find the parent HBA to which the vHBA was configured. The following example lists the pertinent part of the tree for the example HBA "scsi_host5": +- scsi_host5 | +- scsi_host7 +- scsi_target5_0_0 | | | +- scsi_5_0_0_0 | +- scsi_target5_0_1 | | | +- scsi_5_0_1_0 | +- scsi_target5_0_2 | | | +- scsi_5_0_2_0 | | | +- block_sdb_3600a0b80005adb0b0000ab2d4cae9254 | +- scsi_target5_0_3 | +- scsi_5_0_3_0 The "block_" indicates it's a block device, the "sdb_" is a convention to signify the the short device path of "/dev/sdb", and the short device path or the number can be used to search the "/dev/disk/by-{id,path,uuid,label}/" name space for the specific LUN by name, for example: # ls /dev/disk/by-id/ | grep 3600a0b80005adb0b0000ab2d4cae9254 scsi-3600a0b80005adb0b0000ab2d4cae9254 # ls /dev/disk/by-path/ -l | grep sdb lrwxrwxrwx. 1 root root 9 Sep 16 05:58 pci-0000:04:00.1-fc-0x203500a0b85ad1d7-lun-0 -> ../../sdb As an option to using "virsh nodedev-list", it is possible to manually iterate through the "/sys/bus/scsi/device" and "/dev/disk/by-path" directory trees in order to find a LUN using the following steps: 1. Iterate over all the directories beginning with the SCSI host number of the vHBA under the "/sys/bus/scsi/devices" tree. For example, if the SCSI host number is 6, the command would be: # ls /sys/bus/scsi/devices/6:* -d /sys/bus/scsi/devices/6:0:0:0 /sys/bus/scsi/devices/6:0:1:0 /sys/bus/scsi/devices/6:0:2:0 /sys/bus/scsi/devices/6:0:3:0 2. List the "block" names of all the entries belongs to the SCSI host as follows: # ls /sys/bus/scsi/devices/6:*/block/ /sys/bus/scsi/devices/6:0:2:0/block/: sdc /sys/bus/scsi/devices/6:0:3:0/block/: sdd This indicates that "scsi_host6" has two LUNs, one is attached to "6:0:2:0", with the short device name "sdc", and the other is attached to "6:0:3:0", with the short device name "sdd". 3. Determine the stable path to the LUN. Unfortunately a device name such as "sdc" is not stable enough for use by libvirt. In order to get the stable path, use the "ls -l /dev/disk/by-path" and look for the "sdc" path: # ls -l /dev/disk/by-path/ | grep sdc lrwxrwxrwx. 1 root root 9 Sep 10 22:28 pci-0000:08:00.1-fc-0x205800a4085a3127-lun-0 -> ../../sdc Thus "/dev/disk/by-path/pci-0000:08:00.1-fc-0x205800a4085a3127-lun-0" is the stable path of the LUN attached to address "6:0:2:0" and will be used in virtual machine configurations. 5) Virtual machine configuration change to use vHBA LUN Adding the vHBA LUN to the virtual machine configuration is done via an XML modification to the virtual machine. 5.1) Using a LUN from a vHBA created by the storage pool Adding the vHBA LUN to the virtual machine is handled via XML to create a disk volume on the virtual machine with the following example XML: <disk type='volume' device='disk'> <driver name='qemu' type='raw'/> <source pool='poolvhba0' volume='unit:0:2:0'/> <target dev='hda' bus='ide'/> </disk> In particular note the usage of the "<source>" directive with the "pool" and "volume" attributes listing the storage pool and the short volume name. 5.2) Using a LUN from a vHBA created using the node device driver Configuring a vHBA on the virtual machine can be done with its stable path (path of {by-id|by-path|by-uuid|by-label}). The following is an XML example of a direct LUN path: <disk type='volume' device='disk'> <driver name='qemu' type='raw'/> <source dev='/dev/disk/by-path/pci-0000\:04\:00.1-fc-0x203400a0b85ad1d7-lun-0'/> <target dev='sda' bus='scsi'/> </disk> NOTE: The use of "device='disk'" and the long "<source>" device name. The example uses the "by-path" option. The backslashes prior to the colons are required, since colons can be considered as delimiters. 5.3) To configure the LUN as a pass-through device, use the following XML examples. For a vHBA created using the node device driver: <disk type='volume' device='lun'> <driver name='qemu' type='raw'/> <source dev='/dev/disk/by-path/pci-0000\:04\:00.1-fc-0x203400a0b85ad1d7-lun-0'/> <target dev='sda' bus='scsi'/> </disk> NOTE: The use of "device='lun'" and again the long "<source>" device name. Again, the backslashes prior to the colons are required. For a vHBA created by a storage pool: <disk type='volume' device='disk'> <driver name='qemu' type='raw'/> <source pool='poolvhba0' volume='unit:0:2:0'/> <target dev='hda' bus='ide'/> </disk> Although it is possible to use the LUN's path as the disk source for a vHBA created by the storage pool, it is recommended to use libvirt storage pool and storage volume instead. 6) Destroying a vHBA A vHBA created by the storage pool can be destroyed by the virsh command "pool-destroy", for example: # virsh pool-destroy poolvhba0 NOTE: If the storage pool is persistent, the vHBA will also be removed by libvirt when it destroys the storage pool. A vHBA created using the node device driver can be destroyed by the command "virsh nodedev-destroy", for example (assuming that scsi_host6 was created as shown earlier): # virsh nodedev-destroy scsi_host6 Destroying a vHBA removes it just as a reboot would do since the node device driver does not support persistent configurations. 7) Troubleshooting 7.1) Discovery of HBA capable of NPIV prior to 1.0.4 Prior to libvirt 1.0.4, discovery of HBAs capable of NPIV requires checking each of the HBAs on the host for the capability flag "vport_ops", as follows: First you need to find out all the HBA by capability flag "scsi_host": # virsh nodedev-list --cap scsi_host scsi_host0 scsi_host1 scsi_host2 scsi_host3 scsi_host4 scsi_host5 Now check each HBA to find one with the "vport_ops" capability, either one at a time as follows: # virsh nodedev-dumpxml scsi_host3 <device> <name>scsi_host3</name> <parent>pci_0000_00_08_0</parent> <capability type='scsi_host'> <host>3</host> </capability> </device> That says "scsi_host3" doesn't support vHBA # virsh nodedev-dumpxml scsi_host5 <device> <name>scsi_host5</name> <parent>pci_0000_04_00_1</parent> <capability type='scsi_host'> <host>5</host> <capability type='fc_host'> <wwnn>2001001b32a9da4e</wwnn> <wwpn>2101001b32a9da4e</wwpn> <fabric_wwn>2001000dec9877c1</fabric_wwn> </capability> <capability type='vport_ops' /> </capability> </device> But "scsi_host5" supports it. NOTE: In addition to libvirt 1.0.4 automating the lookup of HBA's capable of supporting a vHBA configuration, the XML tags "max_vports" and "vports" will describe the maximum vports allowed and the current vports in use. As an alternative and smarter way, you can avoid above cumbersome steps by simple script like: for i in $(virsh nodedev-list --cap scsi_host); do if virsh nodedev-dumpxml $i | grep vport_ops > /dev/null; then echo $i; fi done NOTE: It is possible that node device is named "pci_10df_fe00_scsi_host_0". This is because libvirt supports two backends for the node device driver ("udev" and "HAL"), but they lead to completely different naming styles. The udev backend is preferred over the HAL backend since HAL support is in maintenance mode. The udev backend is more common; however, if your destribution packager built the libvirt binaries without the udev backend, then the more complicated names such as "pci_10df_fe00_scsi_host_0" must be used. 7.2) Creation of a vHBA using the node device driver prior to 0.9.10 For libvirt prior to 0.9.10, you will need to specify the "wwnn" and "wwpn" manually when creating a vHBA, example XML as follows: <device> <name>scsi_host6</name> <parent>scsi_host5</parent> <capability type='scsi_host'> <capability type='fc_host'> <wwnn>2001001b32a9da5e</wwnn> <wwpn>2101001b32a9da5e</wwpn> </capability> </capability> </device> 7.3) Creation of storage pool based on vHBA prior to 1.0.5 Prior to libvirt 1.0.5, one can define a "scsi" type pool based on a vHBA by it's SCSI host name (e.g. "host5" in XML below), using an example XML as follows: <pool type='scsi'> <name>poolhba0</name> <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid> <capacity unit='bytes'>0</capacity> <allocation unit='bytes'>0</allocation> <available unit='bytes'>0</available> <source> <adapter name='host0'/> </source> <target> <path>/dev/disk/by-path</path> <permissions> <mode>0700</mode> <owner>0</owner> <group>0</group> </permissions> </target> </pool> There are two disadvantage of using the SCSI host name as the source adapter. First the SCSI host number is not stable, thus it may cause trouble for your storage pool after a system reboot. Second, the adapter name (e.g. "host5") is not consistent with node device name (e.g. "scsi_host5"). Moreover, using the SCSI host name as the source adapter doesn't allow you to create a vHBA. NOTE: Since 1.0.5, the source adapter name was changed to be consistent with node device name, thus the second disadvantage is destroyed. Regards, Osier

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[libvirt] [PATCH 0/3] Libvirt Wireshark dissector
by Yuto KAWAMURA(kawamuray) 18 Sep '13

18 Sep '13

From: "Yuto KAWAMURA(kawamuray)" <kawamuray.dadada(a)gmail.com> Introduce Wireshark dissector plugin which adds support to Wireshark for dissecting libvirt RPC protocol. This feature was presented by Michal Privoznik year before last[1]. But it did only support dissecting packet headers. This time I enhanced that dissector to support dissecting packet payload. Furthermore, I provide code generator of dissector. So you can get fresh build of dissector from libvirt RPC specification file at any version you like. [1] http://www.redhat.com/archives/libvir-list/2011-October/msg00301.html Yuto KAWAMURA(kawamuray) (3): Exclude files in VC_LIST_ALWAYS_EXCLUDE_REGEX from bracket-spacing-check Introduce Libvirt Wireshark dissector Add sample output of Wireshark dissector Makefile.am | 3 +- cfg.mk | 10 +- configure.ac | 69 +- devtools/wireshark-dissector/Makefile.am | 28 + devtools/wireshark-dissector/README.md | 25 + .../samples/libvirt-sample.pdml | 7970 ++++++++++++++++++++ devtools/wireshark-dissector/src/.gitignore | 2 + devtools/wireshark-dissector/src/Makefile.am | 31 + devtools/wireshark-dissector/src/moduleinfo.h | 36 + devtools/wireshark-dissector/src/packet-libvirt.c | 512 ++ devtools/wireshark-dissector/src/packet-libvirt.h | 127 + devtools/wireshark-dissector/src/plugin.c | 27 + devtools/wireshark-dissector/util/genxdrstub.pl | 1009 +++ 13 files changed, 9842 insertions(+), 7 deletions(-) create mode 100644 devtools/wireshark-dissector/Makefile.am create mode 100644 devtools/wireshark-dissector/README.md create mode 100644 devtools/wireshark-dissector/samples/libvirt-sample.pdml create mode 100644 devtools/wireshark-dissector/src/.gitignore create mode 100644 devtools/wireshark-dissector/src/Makefile.am create mode 100644 devtools/wireshark-dissector/src/moduleinfo.h create mode 100644 devtools/wireshark-dissector/src/packet-libvirt.c create mode 100644 devtools/wireshark-dissector/src/packet-libvirt.h create mode 100644 devtools/wireshark-dissector/src/plugin.c create mode 100755 devtools/wireshark-dissector/util/genxdrstub.pl -- 1.8.1.5

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[libvirt] [PATCH v3 0/7] add new API virConnectGetCPUModelNames
by Giuseppe Scrivano 18 Sep '13

18 Sep '13

This series adds a new API "virConnectGetCPUModelNames" that allows to retrieve the list of CPU models known by the hypervisor for a specific architecture. This new function is mainly needed by virt-manager to not read directly the cpu_map.xml file (it could also be different when accessing a remote daemon). I have amended all the comments reported for v2. *v3 main changes - virConnectGetCPUModelNames returns the number of models instead of 0 on success. - Use VIR_INSERT_ELEMENT instead of VIR_EXPAND_N. - Fix a potential memory leak in the python bindings. - Move virsh changes to a separate commit. - Remove API documentation from libvirt.h. *v2 main changes - set a hard limit for the number of CPU models that is possible to fetch from a remote server. - Use VIR_EXPAND_N instead of VIR_REALLOC_N. - s|1.1.2|1.1.3| Giuseppe Scrivano (7): libvirt: add new public API virConnectGetCPUModelNames cpu: add function to get the models for an arch virConnectGetCPUModelNames: implement the remote protocol virConnectGetCPUModelNames: add the support for qemu virConnectGetCPUModelNames: add the support for the test protocol virsh: add function to get the CPU models for an arch python: add bindings for virConnectGetCPUModelNames daemon/remote.c | 43 +++++++++++++++++++++++++++++++ include/libvirt/libvirt.h.in | 4 +++ python/generator.py | 1 + python/libvirt-override-api.xml | 7 +++++ python/libvirt-override.c | 52 +++++++++++++++++++++++++++++++++++++ python/libvirt-override.py | 11 ++++++++ src/cpu/cpu.c | 56 ++++++++++++++++++++++++++++++++++++++++ src/cpu/cpu.h | 3 +++ src/driver.h | 7 +++++ src/libvirt.c | 46 +++++++++++++++++++++++++++++++++ src/libvirt_private.syms | 1 + src/libvirt_public.syms | 5 ++++ src/qemu/qemu_driver.c | 14 ++++++++++ src/remote/remote_driver.c | 57 +++++++++++++++++++++++++++++++++++++++++ src/remote/remote_protocol.x | 20 ++++++++++++++- src/remote_protocol-structs | 11 ++++++++ src/test/test_driver.c | 11 ++++++++ tools/virsh-host.c | 54 ++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 5 ++++ 19 files changed, 407 insertions(+), 1 deletion(-) -- 1.8.3.1

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[libvirt] [PATCH] qemu: Avoid dangling job in qemuDomainSetBlockIoTune
by Jiri Denemark 18 Sep '13

18 Sep '13

virDomainSetBlockIoTuneEnsureACL was incorrectly called after we already started a job. As a result of this, the job was not cleaned up when an access driver had forbidden the action. Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- src/qemu/qemu_driver.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 0763f9b..8a302d1 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -14673,15 +14673,15 @@ qemuDomainSetBlockIoTune(virDomainPtr dom, if (!(vm = qemuDomObjFromDomain(dom))) return -1; + if (virDomainSetBlockIoTuneEnsureACL(dom->conn, vm->def, flags) < 0) + goto cleanup; + if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0) goto cleanup; priv = vm->privateData; cfg = virQEMUDriverGetConfig(driver); - if (virDomainSetBlockIoTuneEnsureACL(dom->conn, vm->def, flags) < 0) - goto cleanup; - if (!(caps = virQEMUDriverGetCapabilities(driver, false))) goto endjob; -- 1.8.3.2

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[libvirt] Announce: Nuxis 1.3.0 and 2.0.0
by Nuno Fernandes 18 Sep '13

18 Sep '13

Hello, Nuxis is an integrated solution for virtualization management. Some of its features are centralized management of nodes/physical machines and virtual machines, management of virtual networks, storage management, ISO management, monitoring and statistics charts, backup/restore of appliance configurations, import from and export to other virtualization systems using the OVF format, access control, support for multiple operating systems on 32-bit and 64-bit architectures, including Linux and Windows, paravirtualized hardware acceleration drivers, live migrate, PXE boot, Web management, storage management with LVM, and more. We are pleased to announce major version 2.0.0. It's now based on 64-bit CentOS6 with the xen4centos repository. There are many bugfixes and a few enhancements: - physical volume resizing - triggering a warning message when one snapshot is out of free space - implementation of Storage iSCSI configuration and support. - Libvirt has been updated to 0.10.2.7, Xen to 4.2.3, and the kernel to 3.4.61. For more information please check http://freecode.com/projects/etvm and homepage http://www.nuxis.com. As always the code is at github https://github.com/eurotux/ETVA. We have a users mailling list at http://mailman.nuxis.com/pipermail/nuxis-users/ Best regards, Nuno Fernandes

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[libvirt] [PATCH 0/2] Add support for device blkio iops and bps throttle
by hzguanqiang＠gmail.com 18 Sep '13

18 Sep '13

From: Guan Qiang <hzguanqiang(a)corp.netease.com> The patches add support for setting/getting blkio read/write bps/iops throttle per-device with blkio cgroup. Guan Qiang (2): blkiotune: add support for device iops and bps throttle blkiotune: add virsh support for blkiotune.throttle.iops/bps docs/formatdomain.html.in | 8 + docs/schemas/domaincommon.rng | 28 +- include/libvirt/libvirt.h.in | 40 ++ src/conf/domain_conf.c | 115 +++- src/conf/domain_conf.h | 16 +- src/libvirt_private.syms | 4 +- src/lxc/lxc_cgroup.c | 9 +- src/qemu/qemu_cgroup.c | 10 +- src/qemu/qemu_driver.c | 579 ++++++++++++++++++-- src/util/vircgroup.c | 79 ++- src/util/vircgroup.h | 8 +- .../qemuxml2argv-blkiotune-device.xml | 4 + tools/virsh-domain.c | 64 +++ tools/virsh.pod | 32 +- 14 files changed, 883 insertions(+), 113 deletions(-) -- 1.7.9.5

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[libvirt] [RFC] Add iommu group commands
by Li Zhang 18 Sep '13

18 Sep '13

Hi, Currently, we need to assign the iommu group to guests manually. It needs to know the groups information. I think we can add some iommu group commands to provide users groups information. I can think of these commands as the following: #virsh group-list <--active> * list all the groups in the system with VFIO * --active: list the active groups which have been used by guests. #virsh group-devs <groupnum> * list the devices in the group. *If groupnum is not specified, it will list every groups' devices. # virsh group-dumpxml <groupnum> * dump the group's xml configuration. dumxml file for example: <iommuGroup number='1'> <address domain='0x0001' bus='0x40' slot='0x00' function='0x0'/> <address domain='0x0001' bus='0x40' slot='0x00' function='0x1'/> </iommuGroup> This information can also be got by #nodedev-dumpxml <device> But users still can't know all the groups and the devices in the group directly. Any suggestions? I want to add iommu symbol to the commands name, but it's too long. Thanks Li Zhang

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[libvirt] [PATCH] virsh-domain: Remove unnecessary check and tune code in cmdDesc()
by Hongwei Bi 18 Sep '13

18 Sep '13

Since there is a check on buf through virBufferError(), it is not necessary to check desc again. --- tools/virsh-domain.c | 62 +++++++++++++++++++++---------------------------- 1 files changed, 27 insertions(+), 35 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index e47877b..a8a0105 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -6724,45 +6724,37 @@ cmdDesc(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) } desc = virBufferContentAndReset(&buf); - if (edit || desc) { - if (!desc) { - desc = vshGetDomainDescription(ctl, dom, title, - config?VIR_DOMAIN_XML_INACTIVE:0); - if (!desc) - goto cleanup; - } - - if (edit) { - /* Create and open the temporary file. */ - if (!(tmp = vshEditWriteToTempFile(ctl, desc))) - goto cleanup; + if (edit) { + /* Create and open the temporary file. */ + if (!(tmp = vshEditWriteToTempFile(ctl, desc))) + goto cleanup; - /* Start the editor. */ - if (vshEditFile(ctl, tmp) == -1) - goto cleanup; + /* Start the editor. */ + if (vshEditFile(ctl, tmp) == -1) + goto cleanup; - /* Read back the edited file. */ - if (!(desc_edited = vshEditReadBackFile(ctl, tmp))) - goto cleanup; + /* Read back the edited file. */ + if (!(desc_edited = vshEditReadBackFile(ctl, tmp))) + goto cleanup; - /* strip a possible newline at the end of file; some - * editors enforce a newline, this makes editing the title - * more convenient */ - if (title && - (tmpstr = strrchr(desc_edited, '\n')) && - *(tmpstr+1) == '\0') - *tmpstr = '\0'; - - /* Compare original XML with edited. Has it changed at all? */ - if (STREQ(desc, desc_edited)) { - vshPrint(ctl, _("Domain description not changed.\n")); - ret = true; - goto cleanup; - } + /* strip a possible newline at the end of file; some + * editors enforce a newline, this makes editing the title + * more convenient */ + if (title && + (tmpstr = strrchr(desc_edited, '\n')) && + *(tmpstr+1) == '\0') + *tmpstr = '\0'; + + /* Compare original XML with edited. Has it changed at all? */ + if (STREQ(desc, desc_edited)) { + vshPrint(ctl, _("Domain description not changed.\n")); + ret = true; + goto cleanup; + } - VIR_FREE(desc); - desc = desc_edited; - desc_edited = NULL; + VIR_FREE(desc); + desc = desc_edited; + desc_edited = NULL; } if (virDomainSetMetadata(dom, type, desc, NULL, NULL, flags) < 0) { -- 1.7.1

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[libvirt] [PATCHv3] Add forwarder attribute to <dns /> element.
by Diego Woitasen 18 Sep '13

18 Sep '13

Useful to set custom forwarders instead of using the contents of /etc/resolv.conf. It helps me to setup dnsmasq as local nameserver to resolv VM domain names from domain 0, when domain option is used. Signed-off-by: Diego Woitasen <diego.woitasen(a)vhgroup.net> --- docs/formatnetwork.html.in | 8 ++++ docs/schemas/network.rng | 5 +++ src/conf/network_conf.c | 43 ++++++++++++++++++++-- src/conf/network_conf.h | 2 + src/network/bridge_driver.c | 8 ++++ .../nat-network-dns-forwarders.conf | 16 ++++++++ .../nat-network-dns-forwarders.xml | 12 ++++++ tests/networkxml2conftest.c | 1 + 8 files changed, 92 insertions(+), 3 deletions(-) create mode 100644 tests/networkxml2confdata/nat-network-dns-forwarders.conf create mode 100644 tests/networkxml2confdata/nat-network-dns-forwarders.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index e1482db..9fdc3cf 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -631,6 +631,8 @@ <domain name="example.com"/> <dns> <txt name="example" value="example value" /> + <forwarder addr="8.8.8.8"/> + <forwarder addr="8.8.4.4"/> <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10'/> <host ip='192.168.122.2'> <hostname>myhost</hostname> @@ -685,6 +687,12 @@ Currently supported sub-elements of <code><dns></code> are: <dl> + <dt><code>forwarder</code></dt> + <dd>A <code>dns</code> element can have 0 or more <code>forwarder</code> elements. + Each forwarder element defines an IP address to be used as forwarder + in DNS server configuration. The addr attribute is required and defines the + IP address of every forwarder. <span class="since">Since N/A</span> + </dd> <dt><code>txt</code></dt> <dd>A <code>dns</code> element can have 0 or more <code>txt</code> elements. Each txt element defines a DNS TXT record and has two attributes, both diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index ab183f1..95db5c2 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -217,6 +217,11 @@ </attribute> </optional> <zeroOrMore> + <element name="forwarder"> + <attribute name="addr"><ref name="ipAddr"/></attribute> + </element> + </zeroOrMore> + <zeroOrMore> <element name="txt"> <attribute name="name"><ref name="dnsName"/></attribute> <attribute name="value"><text/></attribute> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index d54f2aa..c9b90e7 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -175,6 +175,11 @@ virNetworkDNSSrvDefClear(virNetworkDNSSrvDefPtr def) static void virNetworkDNSDefClear(virNetworkDNSDefPtr def) { + if (def->forwarders) { + while (def->nfwds) + VIR_FREE(def->forwarders[--def->nfwds]); + VIR_FREE(def->forwarders); + } if (def->txts) { while (def->ntxts) virNetworkDNSTxtDefClear(&def->txts[--def->ntxts]); @@ -1037,8 +1042,9 @@ virNetworkDNSDefParseXML(const char *networkName, xmlNodePtr *hostNodes = NULL; xmlNodePtr *srvNodes = NULL; xmlNodePtr *txtNodes = NULL; + xmlNodePtr *fwdNodes = NULL; char *forwardPlainNames = NULL; - int nhosts, nsrvs, ntxts; + int nfwds, nhosts, nsrvs, ntxts; size_t i; int ret = -1; xmlNodePtr save = ctxt->node; @@ -1058,6 +1064,30 @@ virNetworkDNSDefParseXML(const char *networkName, } } + nfwds = virXPathNodeSet("./forwarder", ctxt, &fwdNodes); + if (nfwds < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid <forwarder> element found in <dns> of network %s"), + networkName); + goto cleanup; + } + if (nfwds > 0) { + if (VIR_ALLOC_N(def->forwarders, nfwds) < 0) + goto cleanup; + + for (i = 0; i < nfwds; i++) { + def->forwarders[i] = virXMLPropString(fwdNodes[i], "addr"); + if (virSocketAddrParse(NULL, def->forwarders[i], AF_UNSPEC) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("Invalid forwarder IP address '%s' " + "in network '%s'"), + def->forwarders[i], networkName); + goto cleanup; + } + def->nfwds++; + } + } + nhosts = virXPathNodeSet("./host", ctxt, &hostNodes); if (nhosts < 0) { virReportError(VIR_ERR_XML_ERROR, @@ -1121,6 +1151,7 @@ virNetworkDNSDefParseXML(const char *networkName, ret = 0; cleanup: VIR_FREE(forwardPlainNames); + VIR_FREE(fwdNodes); VIR_FREE(hostNodes); VIR_FREE(srvNodes); VIR_FREE(txtNodes); @@ -2267,13 +2298,14 @@ virNetworkDNSDefFormat(virBufferPtr buf, int result = 0; size_t i, j; - if (!(def->forwardPlainNames || def->nhosts || def->nsrvs || def->ntxts)) + if (!(def->forwardPlainNames || def->forwarders || def->nhosts || + def->nsrvs || def->ntxts)) goto out; virBufferAddLit(buf, "<dns"); if (def->forwardPlainNames) { virBufferAddLit(buf, " forwardPlainNames='yes'"); - if (!(def->nhosts || def->nsrvs || def->ntxts)) { + if (!(def->forwarders || def->nhosts || def->nsrvs || def->ntxts)) { virBufferAddLit(buf, "/>\n"); goto out; } @@ -2282,6 +2314,11 @@ virNetworkDNSDefFormat(virBufferPtr buf, virBufferAddLit(buf, ">\n"); virBufferAdjustIndent(buf, 2); + for (i = 0; i < def->nfwds; i++) { + virBufferAsprintf(buf, "<forwarders addr='%s' />\n", + def->forwarders[i]); + } + for (i = 0; i < def->ntxts; i++) { virBufferAsprintf(buf, "<txt name='%s' value='%s'/>\n", def->txts[i].name, diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index c28bfae..b425986 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -122,6 +122,8 @@ struct _virNetworkDNSDef { virNetworkDNSHostDefPtr hosts; size_t nsrvs; virNetworkDNSSrvDefPtr srvs; + size_t nfwds; + char **forwarders; }; typedef struct _virNetworkIpDef virNetworkIpDef; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index 3a8be90..a2cfb35 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -708,6 +708,14 @@ networkDnsmasqConfContents(virNetworkObjPtr network, if (!network->def->dns.forwardPlainNames) virBufferAddLit(&configbuf, "domain-needed\n"); + if (network->def->dns.forwarders) { + virBufferAddLit(&configbuf, "no-resolv\n"); + for (i=0; i < network->def->dns.nfwds; i++) { + virBufferAsprintf(&configbuf, "server=%s\n", + network->def->dns.forwarders[i]); + } + } + if (network->def->domain) { virBufferAsprintf(&configbuf, "domain=%s\n" diff --git a/tests/networkxml2confdata/nat-network-dns-forwarders.conf b/tests/networkxml2confdata/nat-network-dns-forwarders.conf new file mode 100644 index 0000000..ebca289 --- /dev/null +++ b/tests/networkxml2confdata/nat-network-dns-forwarders.conf @@ -0,0 +1,16 @@ +##WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE +##OVERWRITTEN AND LOST. Changes to this configuration should be made using: +## virsh net-edit default +## or other application using the libvirt API. +## +## dnsmasq conf file created by libvirt +strict-order +domain-needed +no-resolv +server=8.8.8.8 +server=8.8.4.4 +local=// +except-interface=lo +bind-dynamic +interface=virbr0 +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts diff --git a/tests/networkxml2confdata/nat-network-dns-forwarders.xml b/tests/networkxml2confdata/nat-network-dns-forwarders.xml new file mode 100644 index 0000000..eebec97 --- /dev/null +++ b/tests/networkxml2confdata/nat-network-dns-forwarders.xml @@ -0,0 +1,12 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9c</uuid> + <forward dev='eth0' mode='nat'/> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <forwarder addr='8.8.8.8' /> + <forwarder addr='8.8.4.4' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + </ip> +</network> diff --git a/tests/networkxml2conftest.c b/tests/networkxml2conftest.c index 5825af3..ad50e88 100644 --- a/tests/networkxml2conftest.c +++ b/tests/networkxml2conftest.c @@ -145,6 +145,7 @@ mymain(void) DO_TEST("nat-network-dns-srv-record", full); DO_TEST("nat-network-dns-hosts", full); DO_TEST("nat-network-dns-forward-plain", full); + DO_TEST("nat-network-dns-forwarders", full); DO_TEST("dhcp6-network", dhcpv6); DO_TEST("dhcp6-nat-network", dhcpv6); DO_TEST("dhcp6host-routed-network", dhcpv6); -- 1.8.1.2

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