February 2014 - Devel - libvirt List Archives

[Libvir] Hang with virt-install graphic=no on FC 6 6.93/F7 RC2
by libvirtuser 23 Dec '25

23 Dec '25

I had this problem and another user confirmed the same behavior on his machine: http://pastie.caboo.se/65417 Haven't tried it with *2925.10* yet. Also, is there a way to get more verbose info about what calls are causing the "configuration file syntax error" errors? Thanks. virt-install How large would you like the disk () to be (in gigabytes)? 4 ERROR: Must provide a file, not a directory for the disk What would you like to use as the disk (path)? /xen/images/x6.img Would you like to enable graphics support? (yes or no) no What is the install location? http://mirror.anl.gov/pub/fedora-linux-core/test/6.93/Fedora/i386/os/ Starting install... libvir: Xen Daemon error : GET operation failed: libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name Retrieving Fedora... 276 kB 00:01 Retrieving vmlinuz... 100% |=========================| 2.1 MB 00:16 Retrieving initrd.img... 100% |=========================| 5.4 MB 00:28 libvir: Xen Daemon error : GET operation failed: libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name Creating domain... 0 B 00:06 Linux version 2.6.20-2925.5.fc7xen (brewbuilder(a)ls20-bc1-14.build.redhat.com) (gcc version 4.1.2 20070317 (Red Hat 4.1.2-5)) #1 SMP Thu Mar 22 13:51:38 EDT 2007 BIOS-provided physical RAM map: sanitize start sanitize bail 0 copy_e820_map() start: 0000000000000000 size: 0000000020800000 end: 0000000020800000 type: 1 Xen: 0000000000000000 - 0000000020800000 (usable) 0MB HIGHMEM available. 520MB LOWMEM available. Using x86 segment limits to approximate NX protection Zone PFN ranges: DMA 0 -> 133120 Normal 133120 -> 133120 HighMem 133120 -> 133120 early_node_map[1] active PFN ranges 0: 0 -> 133120 ACPI in unprivileged domain disabled Built 1 zonelists. Total pages: 132080 Kernel command line: method=http://mirror.anl.gov/pub/fedora-linux-core/test/6.93/Fedora/i386/os/ Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Initializing CPU#0 CPU 0 irqstacks, hard=c135f000 soft=c133f000 PID hash table entries: 4096 (order: 12, 16384 bytes) Xen reported: 1694.994 MHz processor. Console: colour dummy device 80x25 Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar ... MAX_LOCKDEP_SUBCLASSES: 8 ... MAX_LOCK_DEPTH: 30 ... MAX_LOCKDEP_KEYS: 2048 ... CLASSHASH_SIZE: 1024 ... MAX_LOCKDEP_ENTRIES: 8192 ... MAX_LOCKDEP_CHAINS: 16384 ... CHAINHASH_SIZE: 8192 memory used by lock dependency info: 1064 kB per task-struct memory footprint: 1200 bytes Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Software IO TLB disabled vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000 Memory: 503936k/532480k available (2030k kernel code, 19948k reserved, 1079k data, 180k init, 0k highmem) virtual kernel memory layout: fixmap : 0xf5315000 - 0xf57fe000 (5028 kB) pkmap : 0xf5000000 - 0xf5200000 (2048 kB) vmalloc : 0xe1000000 - 0xf4ffe000 ( 319 MB) lowmem : 0xc0000000 - 0xe0800000 ( 520 MB) .init : 0xc130e000 - 0xc133b000 ( 180 kB) .data : 0xc11fb9d9 - 0xc1309714 (1079 kB) .text : 0xc1000000 - 0xc11fb9d9 (2030 kB) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 4262.67 BogoMIPS (lpj=8525343) Security Framework v1.0.0 initialized SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 512 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 256K Checking 'hlt' instruction... OK. SMP alternatives: switching to UP code Freeing SMP alternatives: 11k freed Brought up 1 CPUs Grant table initialized NET: Registered protocol family 16 Brought up 1 CPUs PCI: Fatal: No config space access function found PCI: setting up Xen PCI frontend stub Setting up standard PCI resources ACPI: Interpreter disabled. Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI: disabled xen_mem: Initialising balloon driver. usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb PCI: System does not support PCI PCI: System does not support PCI NetLabel: Initializing NetLabel: domain hash size = 128 NetLabel: protocols = UNLABELED CIPSOv4 NetLabel: unlabeled traffic allowed by default NET: Registered protocol family 2 IP route cache hash table entries: 32768 (order: 5, 131072 bytes) TCP established hash table entries: 131072 (order: 10, 4194304 bytes) TCP bind hash table entries: 65536 (order: 9, 2097152 bytes) TCP: Hash tables configured (established 131072 bind 65536) TCP reno registered checking if image is initramfs... it is Freeing initrd memory: 7256k freed IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com> audit: initializing netlink socket (disabled) audit(1180379657.981:1): initialized VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) SELinux: Registering netfilter hooks io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) pci_hotplug: PCI Hot Plug PCI Core version: 0.5 BUG: at kernel/fork.c:994 copy_process() [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f [<c1006343>] show_trace+0x12/0x14 [<c10063be>] dump_stack+0x16/0x18 [<c101d044>] copy_process+0x195/0x1245 [<c101e144>] do_fork+0x50/0x117 [<c1003351>] kernel_thread+0x8e/0x96 [<c102c701>] __call_usermodehelper+0x2d/0x46 [<c102cd4f>] run_workqueue+0x89/0x145 [<c102d711>] worker_thread+0xd5/0x102 [<c102ff27>] kthread+0xb3/0xdc [<c10058db>] kernel_thread_helper+0x7/0x10 ======================= rtc: IRQ 8 is not free. Non-volatile memory driver v1.2 Linux agpgart interface v0.101 (c) Dave Jones RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize input: Macintosh mouse button emulation as /class/input/input0 Xen virtual console successfully installed as xvc0 Event-channel device installed. usbcore: registered new interface driver libusual usbcore: registered new interface driver hiddev usbcore: registered new interface driver usbhid drivers/usb/input/hid-core.c: v2.6:USB HID core driver PNP: No PS/2 controller found. Probing ports directly. i8042.c: No controller found. mice: PS/2 mouse device common for all mice TCP bic registered Initializing XFRM netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 Using IPI No-Shortcut mode XENBUS: Device with no driver: device/vbd/51712 XENBUS: Device with no driver: device/vif/0 Freeing unused kernel memory: 180k freed Write protecting the kernel read-only data: 762k ^[Domain installation still in progress. You can reconnect

2 1

[libvirt] [PATCH] Fix python error reporting for some storage operations
by Cole Robinson 07 Mar '25

07 Mar '25

In the python bindings, all vir* classes expect to be passed a virConnect object when instantiated. Before the storage stuff, these classes were only instantiated in virConnect methods, so the generator is hardcoded to pass 'self' as the connection instance to these classes. Problem is there are some methods that return pool or vol instances which aren't called from virConnect: you can lookup a storage volume's associated pool, and can lookup volumes from a pool. In these cases passing 'self' doesn't give the vir* instance a connection, so when it comes time to raise an exception crap hits the fan. Rather than rework the generator to accomodate this edge case, I just fixed the init functions for virStorage* to pull the associated connection out of the passed value if it's not a virConnect instance. Thanks, Cole diff --git a/python/generator.py b/python/generator.py index 01a17da..c706b19 100755 --- a/python/generator.py +++ b/python/generator.py @@ -962,8 +962,12 @@ def buildWrappers(): list = reference_keepers[classname] for ref in list: classes.write(" self.%s = None\n" % ref[1]) - if classname in [ "virDomain", "virNetwork", "virStoragePool", "virStorageVol" ]: + if classname in [ "virDomain", "virNetwork" ]: classes.write(" self._conn = conn\n") + elif classname in [ "virStorageVol", "virStoragePool" ]: + classes.write(" self._conn = conn\n" + \ + " if not isinstance(conn, virConnect):\n" + \ + " self._conn = conn._conn\n") classes.write(" if _obj != None:self._o = _obj;return\n") classes.write(" self._o = None\n\n"); destruct=None

4 3

[libvirt] [PATCH] web docs -- macvtap mode explanation
by Stefan Berger 27 Oct '23

27 Oct '23

This adds more information about the different macvtap device modes. Regards, Stefan

3 2

[libvirt] Supporting vhost-net and macvtap in libvirt for QEMU
by Anthony Liguori 27 Oct '23

27 Oct '23

Disclaimer: I am neither an SR-IOV nor a vhost-net expert, but I've CC'd people that are who can throw tomatoes at me for getting bits wrong :-) I wanted to start a discussion about supporting vhost-net in libvirt. vhost-net has not yet been merged into qemu but I expect it will be soon so it's a good time to start this discussion. There are two modes worth supporting for vhost-net in libvirt. The first mode is where vhost-net backs to a tun/tap device. This is behaves in very much the same way that -net tap behaves in qemu today. Basically, the difference is that the virtio backend is in the kernel instead of in qemu so there should be some performance improvement. Current, libvirt invokes qemu with -net tap,fd=X where X is an already open fd to a tun/tap device. I suspect that after we merge vhost-net, libvirt could support vhost-net in this mode by just doing -net vhost,fd=X. I think the only real question for libvirt is whether to provide a user visible switch to use vhost or to just always use vhost when it's available and it makes sense. Personally, I think the later makes sense. The more interesting invocation of vhost-net though is one where the vhost-net device backs directly to a physical network card. In this mode, vhost should get considerably better performance than the current implementation. I don't know the syntax yet, but I think it's reasonable to assume that it will look something like -net tap,dev=eth0. The effect will be that eth0 is dedicated to the guest. On most modern systems, there is a small number of network devices so this model is not all that useful except when dealing with SR-IOV adapters. In that case, each physical device can be exposed as many virtual devices (VFs). There are a few restrictions here though. The biggest is that currently, you can only change the number of VFs by reloading a kernel module so it's really a parameter that must be set at startup time. I think there are a few ways libvirt could support vhost-net in this second mode. The simplest would be to introduce a new tag similar to <source network='br0'>. In fact, if you probed the device type for the network parameter, you could probably do something like <source network='eth0'> and have it Just Work. Another model would be to have libvirt see an SR-IOV adapter as a network pool whereas it handled all of the VF management. Considering how inflexible SR-IOV is today, I'm not sure whether this is the best model. Has anyone put any more thought into this problem or how this should be modeled in libvirt? Michael, could you share your current thinking for -net syntax? -- Regards, Anthony Liguori

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[libvirt] Libvirt multi queue support
by Naor Shlomo 14 Jun '16

14 Jun '16

Hello experts, Could anyone please tell me if Multi Queue it fully supported in Libvirt and if so what version contains it? Thanks, Naor

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[libvirt] [libvirt-java] [PATCH 00/65]
by Claudio Bley 02 Nov '14

02 Nov '14

Hi. Here are a few patches that piled up in my local branch. Some of them I already submitted to this list, but there has been no reponse to them. Included are a few trivial fixes as well as memory leak fixes and additions to the public API. There had been some minor interest in my first version of domain event support in the Java wrapper[1], which I have reworked almost entirely. If nobody objects, say, within the next two weeks or so, I'll go ahead and push the whole series as was suggested to me by Daniel P. Berrange on this list[2]. I've made sure that all JUnit tests pass after every commit with JNA versions 3.4.1, 3.4.2, 3.5.0, 3.5.1, 3.5.2 and 4.0.0. I'd really appreciate your comments or suggestions. Thanks! [1]: https://www.redhat.com/archives/libvir-list/2013-January/msg01236.html [2]: https://www.redhat.com/archives/libvir-list/2014-January/msg01091.html Claudio Bley (65): Fix warnings about using raw types Fix warnings about accessing static methods Fix typos in Error.java test: fix typo in testConnection() test: ensure that exceptions are thrown when expected Make comments proper javadoc comments for enum constants Ignore editor backup files Depend on JNA versions 3.4.1 to 4.0.0 jna: load virt-0 or virt library depending on the platform Fix wrapping of native size_t data type Use virFree in order to release memory acquired from libvirt tests: remove obsolete test driver Make Device.listCapabilities return only valid array elements test: ensure the Device.listCapabilities method works Start refactoring of error handling Remove processError from Device class Remove processError from Domain class Remove processError from DomainSnapshot class Remove processError from Interface class Remove processError method from Network class Remove processError method from NetworkFilter class Remove processError method from Secret class Remove processError method from StoragePool class Remove processError method from StorageVol class Remove processError method from Stream class Remove processError method from Connect class Call processError only when virInitialize signalled an error Remove ErrorHandler.processError(Libvirt) method Implement equals and hashCode methods for Connect and Domain Fix Domain.getSchedulerParameters / getSchedulerType Fix memleak in Domain.snapshotListNames Fix memleak in StoragePool.listVolumes Fix memleak in DomainSnapshot.getXMLDesc Fix memleak in StorageVol.getPath Fix memleak in StorageVol.getXMLDesc jna: Wrap the virEvent(Add,Remove)Timeout libvirt functions Implement Connect.isAlive Implement Connect.setKeepAlive Introduce event loop support Add constants for enum virDomainEventID Prepare to define proper domain event callback support Add constructIncRef factory method to Domain class events: handle registration for IOError events events: handle registration for Reboot events events: handle registration of domain lifecycle events test: add unit test for domain lifecycle events events: handle registration for PMWakeup events events: add support for PMSuspend events Implement connection close callback support Implement Connect.getSysinfo Implement Domain.blockPeek Implement Domain.memoryPeek Implement Secret.getUsageType Implement Domain.isUpdated Implement Domain.reset Implement Domain.PMwakeup Implement Domain.sendKey Implement interface ByteChannel for Stream class Implement Domain.screenshot test: add testDomainScreenshot JUnit test Add helper for handling bit-flags Connect: add constructors using java.net.URI params Replace Connect.getLibVirVersion method with Library.getVersion Replace static connectionVersion method with getLibVersion Deprecate Connect.getHypervisorVersion .gitignore | 2 + pom.xml.in | 2 +- src/main/java/org/libvirt/BitFlags.java | 18 + src/main/java/org/libvirt/Connect.java | 731 +++++++++++++++++--- src/main/java/org/libvirt/Device.java | 57 +- src/main/java/org/libvirt/Domain.java | 672 +++++++++++------- src/main/java/org/libvirt/DomainSnapshot.java | 29 +- src/main/java/org/libvirt/Error.java | 409 +++++++---- src/main/java/org/libvirt/ErrorHandler.java | 54 +- src/main/java/org/libvirt/Interface.java | 43 +- src/main/java/org/libvirt/KeycodeSet.java | 46 ++ src/main/java/org/libvirt/Library.java | 134 +++- src/main/java/org/libvirt/MemoryAddressMode.java | 19 + src/main/java/org/libvirt/Network.java | 61 +- src/main/java/org/libvirt/NetworkFilter.java | 43 +- src/main/java/org/libvirt/Secret.java | 72 +- src/main/java/org/libvirt/SecretUsageType.java | 23 + src/main/java/org/libvirt/StoragePool.java | 106 ++- src/main/java/org/libvirt/StorageVol.java | 68 +- src/main/java/org/libvirt/Stream.java | 232 +++++-- src/main/java/org/libvirt/SuspendTarget.java | 15 + src/main/java/org/libvirt/event/CrashedDetail.java | 15 + src/main/java/org/libvirt/event/DefinedDetail.java | 17 + src/main/java/org/libvirt/event/DetailInfo.java | 5 + src/main/java/org/libvirt/event/DomainEvent.java | 71 ++ .../java/org/libvirt/event/DomainEventDetail.java | 7 + .../java/org/libvirt/event/DomainEventType.java | 60 ++ src/main/java/org/libvirt/event/EventListener.java | 7 + src/main/java/org/libvirt/event/IOErrorAction.java | 39 ++ .../java/org/libvirt/event/IOErrorListener.java | 21 + .../java/org/libvirt/event/LifecycleListener.java | 24 + .../java/org/libvirt/event/PMSuspendListener.java | 17 + .../java/org/libvirt/event/PMSuspendReason.java | 5 + .../java/org/libvirt/event/PMSuspendedDetail.java | 15 + .../java/org/libvirt/event/PMWakeupListener.java | 17 + .../java/org/libvirt/event/PMWakeupReason.java | 5 + .../java/org/libvirt/event/RebootListener.java | 15 + src/main/java/org/libvirt/event/ResumedDetail.java | 20 + .../java/org/libvirt/event/ShutdownDetail.java | 12 + src/main/java/org/libvirt/event/StartedDetail.java | 30 + src/main/java/org/libvirt/event/StoppedDetail.java | 40 ++ .../java/org/libvirt/event/SuspendedDetail.java | 40 ++ .../java/org/libvirt/event/UndefinedDetail.java | 7 + src/main/java/org/libvirt/jna/Libvirt.java | 121 +++- src/main/java/org/libvirt/jna/SizeT.java | 19 + .../java/org/libvirt/jna/SizeTByReference.java | 50 ++ src/main/java/org/libvirt/jna/virConnectAuth.java | 4 +- .../java/org/libvirt/jna/virConnectCredential.java | 4 +- .../java/org/libvirt/jna/virDomainBlockInfo.java | 4 +- .../java/org/libvirt/jna/virDomainBlockStats.java | 4 +- src/main/java/org/libvirt/jna/virDomainInfo.java | 4 +- .../org/libvirt/jna/virDomainInterfaceStats.java | 4 +- .../java/org/libvirt/jna/virDomainJobInfo.java | 4 +- .../java/org/libvirt/jna/virDomainMemoryStats.java | 4 +- src/main/java/org/libvirt/jna/virError.java | 4 +- src/main/java/org/libvirt/jna/virNodeInfo.java | 4 +- .../java/org/libvirt/jna/virSchedParameter.java | 4 +- .../java/org/libvirt/jna/virStoragePoolInfo.java | 4 +- .../java/org/libvirt/jna/virStorageVolInfo.java | 4 +- src/main/java/org/libvirt/jna/virVcpuInfo.java | 4 +- src/test/java/org/libvirt/TestJavaBindings.java | 139 +++- src/test/java/org/libvirt/TestLibvirtGlobals.java | 4 + src/test/java/test.java | 280 -------- 63 files changed, 2807 insertions(+), 1187 deletions(-) create mode 100644 src/main/java/org/libvirt/BitFlags.java create mode 100644 src/main/java/org/libvirt/KeycodeSet.java create mode 100644 src/main/java/org/libvirt/MemoryAddressMode.java create mode 100644 src/main/java/org/libvirt/SecretUsageType.java create mode 100644 src/main/java/org/libvirt/SuspendTarget.java create mode 100644 src/main/java/org/libvirt/event/CrashedDetail.java create mode 100644 src/main/java/org/libvirt/event/DefinedDetail.java create mode 100644 src/main/java/org/libvirt/event/DetailInfo.java create mode 100644 src/main/java/org/libvirt/event/DomainEvent.java create mode 100644 src/main/java/org/libvirt/event/DomainEventDetail.java create mode 100644 src/main/java/org/libvirt/event/DomainEventType.java create mode 100644 src/main/java/org/libvirt/event/EventListener.java create mode 100644 src/main/java/org/libvirt/event/IOErrorAction.java create mode 100644 src/main/java/org/libvirt/event/IOErrorListener.java create mode 100644 src/main/java/org/libvirt/event/LifecycleListener.java create mode 100644 src/main/java/org/libvirt/event/PMSuspendListener.java create mode 100644 src/main/java/org/libvirt/event/PMSuspendReason.java create mode 100644 src/main/java/org/libvirt/event/PMSuspendedDetail.java create mode 100644 src/main/java/org/libvirt/event/PMWakeupListener.java create mode 100644 src/main/java/org/libvirt/event/PMWakeupReason.java create mode 100644 src/main/java/org/libvirt/event/RebootListener.java create mode 100644 src/main/java/org/libvirt/event/ResumedDetail.java create mode 100644 src/main/java/org/libvirt/event/ShutdownDetail.java create mode 100644 src/main/java/org/libvirt/event/StartedDetail.java create mode 100644 src/main/java/org/libvirt/event/StoppedDetail.java create mode 100644 src/main/java/org/libvirt/event/SuspendedDetail.java create mode 100644 src/main/java/org/libvirt/event/UndefinedDetail.java create mode 100644 src/main/java/org/libvirt/jna/SizeT.java create mode 100644 src/main/java/org/libvirt/jna/SizeTByReference.java delete mode 100644 src/test/java/test.java -- 1.7.9.5

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[libvirt] [RFC PATCH v2 0/3] qemu: RDMA live migration support
by mrhines＠linux.vnet.ibm.com 28 Apr '14

28 Apr '14

From: "Michael R. Hines" <mrhines(a)us.ibm.com> Changes since v1: 1. This series uses 'rdma' instead of 'x-rdma', even though QEMU has has not yet renamed URI for live migraiton yet, but this series is just an RFC, so at least we can get some agreement. 2. We've fixed the job stats to be in the right place instead of breaking the hard-coded api. Michael R. Hines (3): qemu: Expose additional timing metrics for 'setup' and 'mbps' qemu: RDMA migration support using 'rdma' URI qemu: memory pre-pinning support for RDMA migration include/libvirt/libvirt.h.in | 16 ++++ src/qemu/qemu_capabilities.c | 13 ++++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 8 ++ src/qemu/qemu_driver.c | 14 ++++ src/qemu/qemu_migration.c | 174 +++++++++++++++++++++++++++++++++++++------ src/qemu/qemu_migration.h | 3 +- src/qemu/qemu_monitor.c | 5 +- src/qemu/qemu_monitor.h | 14 ++++ src/qemu/qemu_monitor_json.c | 8 ++ src/util/viruri.c | 7 +- tools/virsh-domain.c | 7 ++ 12 files changed, 244 insertions(+), 26 deletions(-) -- 1.8.1.2

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[libvirt] [PATCH] add flag to enforce hugepage backing of guest RAM
by Marcelo Tosatti 27 Apr '14

27 Apr '14

Add an element named "strict-hugepages" to control whether to refuse guest initialization in case hugepage allocation cannot be performed. Signed-off-by: Marcelo Tosatti <mtosatti(a)redhat.com> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index ff50214..e79f5e6 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -632,6 +632,9 @@ <dt><code>hugepages</code></dt> <dd>This tells the hypervisor that the guest should have its memory allocated using hugepages instead of the normal native page size.</dd> + <dt><code>strict-hugepages</code></dt> + <dd>This tells the hypervisor that the guest should refuse to start + in case of failure to allocate guest memory with hugepages</dd> <dt><code>nosharepages</code></dt> <dd>Instructs hypervisor to disable shared pages (memory merge, KSM) for this domain. <span class="since">Since 1.0.6</span></dd> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 28e24f9..f16ef0b 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -11226,6 +11226,9 @@ virDomainDefParseXML(xmlDocPtr xml, if (virXPathBoolean("boolean(./memoryBacking/locked)", ctxt)) def->mem.locked = true; + if ((node = virXPathNode("./memoryBacking/stricthugepages", ctxt))) + def->mem.strict_hugepages = true; + /* Extract blkio cgroup tunables */ if (virXPathUInt("string(./blkiotune/weight)", ctxt, &def->blkio.weight) < 0) diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index d8f2e49..8ea5cf0 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1977,6 +1977,7 @@ struct _virDomainDef { unsigned long long max_balloon; /* in kibibytes */ unsigned long long cur_balloon; /* in kibibytes */ bool hugepage_backed; + bool strict_hugepages; bool nosharepages; bool locked; int dump_core; /* enum virDomainMemDump */ diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 96b8825..3f8d0a4 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -12133,10 +12133,9 @@ cleanup: return def; } - -static int qemuParseProcFileStrings(int pid_value, - const char *name, - char ***list) +int qemuParseProcFileStrings(int pid_value, + const char *name, + char ***list) { char *path = NULL; int ret = -1; diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h index de7683d..bcdfefa 100644 --- a/src/qemu/qemu_command.h +++ b/src/qemu/qemu_command.h @@ -226,7 +226,9 @@ virDomainDefPtr qemuParseCommandLinePid(virCapsPtr qemuCaps, char **pidfile, virDomainChrSourceDefPtr *monConfig, bool *monJSON); - +int qemuParseProcFileStrings(int pid_value, + const char *name, + char ***list); int qemuDomainAssignAddresses(virDomainDefPtr def, virQEMUCapsPtr qemuCaps, virDomainObjPtr obj) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 8bcd98e..cb8298e 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -25,6 +25,7 @@ #include <unistd.h> #include <signal.h> #include <sys/stat.h> +#include <stdlib.h> #if defined(__linux__) # include <linux/capability.h> #elif defined(__FreeBSD__) @@ -3507,6 +3508,95 @@ error: } +/* + * Returns bool: whether to fail guest initialization. + * + */ +static bool qemuValidateStrictHugepage(virDomainObjPtr vm, virQEMUDriverConfigPtr cfg) +{ + bool ret = false; + char **maps = NULL; + int i; + char *buf; + + if (!vm->def->mem.strict_hugepages) + return ret; + + ret = true; + + if (!vm->def->mem.hugepage_backed || !cfg->hugepagePath) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("strict huge pages depends on huge pages")); + return ret; + } + + buf = malloc(strlen(cfg->hugepagePath) + 50); + + /* The parser requires /proc/pid, which only exists on platforms + * like Linux where pid_t fits in int. */ + if ((int) vm->pid != vm->pid || + qemuParseProcFileStrings(vm->pid, "maps", &maps) < 0) + goto cleanup; + + for (i = 0; maps && maps[i]; i++) { + char *endptr; + unsigned long start, end; + const char *map = maps[i]; + bool found = false; + + sprintf(buf, "%s/qemu_back_mem.pc.ram.", cfg->hugepagePath); + if (strstr(map,buf) != NULL) + found = true; + + sprintf(buf, "%s/kvm.", cfg->hugepagePath); + if (strstr(map,buf) != NULL) + found = true; + + if (!found) + continue; + + errno = 0; + start = strtol(map, &endptr, 16); + if ((errno == ERANGE && (start == LONG_MAX || start == LONG_MIN)) + || (errno != 0 && start == 0)) { + continue; + } + + if (endptr && *endptr == '-') + endptr++; + + if (!*endptr) + continue; + + errno = 0; + end = strtol(endptr, NULL, 16); + if ((errno == ERANGE && (end == LONG_MAX || end == LONG_MIN)) + || (errno != 0 && end == 0)) { + continue; + } + + if (end-start >= vm->def->mem.max_balloon * 1024) { + ret = false; + break; + } + } + + if (ret) { + /* FIXME: is VIR_ERR_NO_MEMORY to be used exclusively + * to reference libvirt allocation failures? + */ + virReportError(VIR_ERR_NO_MEMORY, "%s", + _("guest memory not hugetlbfs backed")); + } + +cleanup: + for (i = 0; maps && maps[i]; i++) + VIR_FREE(maps[i]); + free(buf); + return ret; +} + + static bool qemuValidateCpuMax(virDomainDefPtr def, virQEMUCapsPtr qemuCaps) { @@ -4071,6 +4161,13 @@ int qemuProcessStart(virConnectPtr conn, goto cleanup; } + /* enforce strict hugepage */ + if (qemuValidateStrictHugepage(vm, cfg)) { + VIR_WARN("Failure to allocate hugepage backing for %s, exiting", + vm->def->name); + goto cleanup; + } + /* set default link states */ /* qemu doesn't support setting this on the command line, so * enter the monitor */

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[libvirt] libvirt-php: 0.4.8 tag is missing
by Doug Goldstein 20 Apr '14

20 Apr '14

The libvirt-php 0.4.8 tar is missing from the git repo [1]. Hopefully someone who created the tarball can create the tag as well and push it. [1] http://libvirt.org/git/?p=libvirt-php.git Thanks. -- Doug Goldstein

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[libvirt] [PATCH] maint: use $(SED) instead of sed for syntax-check
by Roman Bogorodskiy 26 Mar '14

26 Mar '14

Some syntax-check rules use GNU sed specific regexps, so allow to override which sed would be used to fix 'syntax-check' for non GNU-userland systems. --- cfg.mk | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/cfg.mk b/cfg.mk index 207dfeb..bd984bd 100644 --- a/cfg.mk +++ b/cfg.mk @@ -614,7 +614,7 @@ sc_libvirt_unmarked_diagnostics: $(_sc_search_regexp) @{ grep -nE '\<$(func_re) *$.*;$$' $$($(VC_LIST_EXCEPT)); \ grep -A1 -nE '\<$(func_re) *\(.*,$$' $$($(VC_LIST_EXCEPT)); } \ - | sed 's/_("\([^\"]\|\\.$\+"//;s/[ ]"%s"//' \ + | $(SED) 's/_("$[^\"]\|\\.$\+"//;s/[ ]"%s"//' \ | grep '[ ]"' && \ { echo '$(ME): found unmarked diagnostic(s)' 1>&2; \ exit 1; } || : @@ -639,7 +639,7 @@ sc_prohibit_newline_at_end_of_diagnostic: sc_prohibit_diagnostic_without_format: @{ grep -nE '\<$(func_re) *$.*;$$' $$($(VC_LIST_EXCEPT)); \ grep -A2 -nE '\<$(func_re) *\(.*,$$' $$($(VC_LIST_EXCEPT)); } \ - | sed -rn -e ':l; /[,"]$$/ {N;b l;}' \ + | $(SED) -rn -e ':l; /[,"]$$/ {N;b l;}' \ -e '/(xenapiSessionErrorHandler|vah_(error|warning))/d' \ -e '/\<$(func_re) *\([^"]*"([^%"]|"\n[^"]*")*"[,)]/p' \ | grep -vE 'VIR_ERROR' && \ @@ -661,7 +661,7 @@ sc_prohibit_useless_translation: # or \n on one side of the split. sc_require_whitespace_in_translation: @grep -n -A1 '"$$' $$($(VC_LIST_EXCEPT)) \ - | sed -ne ':l; /"$$/ {N;b l;}; s/"\n[^"]*"/""/g; s/\\n/ /g' \ + | $(SED) -ne ':l; /"$$/ {N;b l;}; s/"\n[^"]*"/""/g; s/\\n/ /g' \ -e '/_(.*[^\ ]""[^\ ]/p' | grep . && \ { echo '$(ME): missing whitespace at line split' 1>&2; \ exit 1; } || : @@ -681,11 +681,11 @@ sc_preprocessor_indentation: sc_spec_indentation: @if cppi --version >/dev/null 2>&1; then \ for f in $$($(VC_LIST_EXCEPT) | grep '\.spec\.in$$'); do \ - sed -e 's|#|// #|; s|%ifn*\(arch$* |#if a // |' \ + $(SED) -e 's|#|// #|; s|%ifn*$arch$* |#if a // |' \ -e 's/%$else\|endif\|define$/#\1/' \ -e 's/^$ *$\1\1\1#/#\1/' \ -e 's|^$ *[^#/ ]$|// \1|; s|^$ */[^/]$|// \1|' $$f \ - | cppi -a -c 2>&1 | sed "s|standard input|$$f|"; \ + | cppi -a -c 2>&1 | $(SED) "s|standard input|$$f|"; \ done | { if grep . >&2; then false; else :; fi; } \ || { echo '$(ME): incorrect preprocessor indentation' 1>&2; \ exit 1; }; \ @@ -777,7 +777,7 @@ sc_prohibit_cross_inclusion: # elements added to the enum by using a _LAST marker. sc_require_enum_last_marker: @grep -A1 -nE '^[^#]*VIR_ENUM_IMPL *\(' $$($(VC_LIST_EXCEPT)) \ - | sed -ne '/VIR_ENUM_IMPL[^,]*,$$/N' \ + | $(SED) -ne '/VIR_ENUM_IMPL[^,]*,$$/N' \ -e '/VIR_ENUM_IMPL[^,]*,[^,]*[^_,][^L,][^A,][^S,][^T,],/p' \ -e '/VIR_ENUM_IMPL[^,]*,[^,]\{0,4\},/p' \ | grep . && \ @@ -878,7 +878,7 @@ ifeq (0,$(MAKELEVEL)) # b653eda3ac4864de205419d9f41eec267cb89eeb # # Keep this logic in sync with autogen.sh. - _submodule_hash = sed 's/^[ +-]//;s/ .*//' + _submodule_hash = $(SED) 's/^[ +-]//;s/ .*//' _update_required := $(shell \ cd '$(srcdir)'; \ test -d .git || { echo 0; exit; }; \ -- 1.8.4.3

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