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[libvirt] Storage LVM volume mounted with filesystem
by Ricardo Tiago 02 Sep '08

02 Sep '08

Hi, I'm quite new to libvirt, and i have a question regarding the storage capabilities in libvirt. I have reading the documentation but i couldn't figure it out if its possible to specify in the LVM volume xml description that i want the new volume to be mounted with a filesystem. I'm using libvirt-0.4.4 My current volume xml is: <volume type="fs"> <name>sl5-root</name> <allocation>0</allocation> <capacity>5000000000</capacity> <target> <path>/tmp/sl5</path> <permissions> <owner>0744</owner> <group>0744</group> <mode>0744</mode> <label>virt_image_t</label> </permissions> </target> </volume> /tmp/sl5 is a ext3 filesystem that i would like to see mounted in the newly create lvm volume. My pool xml: <pool type="logical"> <name>vg1</name> <target> <path>/dev/vg1</path> </target> </pool> Thanks Ricardo

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[libvirt] [PATCH] Set correct device type when parsing input devices
by Cole Robinson 02 Sep '08

02 Sep '08

In virDomainDeviceDefParse, parsing an input device was actually setting it's type as DEVICE_DISK. The attached patch fixes this. Thanks, Cole commit 75150ac2536c427f74875fc563abf2fc06595dda Author: Cole Robinson <crobinso(a)dhcp-100-19-219.bos.redhat.com> Date: Thu Aug 21 13:27:38 2008 -0400 Fix setting input device type in virDomainDeviceDefParse. diff --git a/src/domain_conf.c b/src/domain_conf.c index d482e68..6b23474 100644 --- a/src/domain_conf.c +++ b/src/domain_conf.c @@ -1656,7 +1656,7 @@ virDomainDeviceDefPtr virDomainDeviceDefParse(virConnectPtr conn, if (!(dev->data.net = virDomainNetDefParseXML(conn, node))) goto error; } else if (xmlStrEqual(node->name, BAD_CAST "input")) { - dev->type = VIR_DOMAIN_DEVICE_DISK; + dev->type = VIR_DOMAIN_DEVICE_INPUT; if (!(dev->data.input = virDomainInputDefParseXML(conn, def->os.type, node))) goto error; } else if (xmlStrEqual(node->name, BAD_CAST "sound")) {

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[libvirt] [PATCH] Don't list capabilities entries if emulators can't be accessed
by Cole Robinson 02 Sep '08

02 Sep '08

The patch below fixes capabilities xml generation for the qemu driver if the emulators aren't found in the hardcoded paths. Current behavior will add a <guest> entry for the emulator even if it does not exist, patch fixes this to check that we actually have access. This brings up another issue, that hardcoded paths aren't exactly distro friendly. I'm not really familiar with what options we have to allow specifying these at build time (or something else). Anyone have an idea? Thanks, Cole diff --git a/src/qemu_conf.c b/src/qemu_conf.c index dc9e42a..0328cc1 100644 --- a/src/qemu_conf.c +++ b/src/qemu_conf.c @@ -230,6 +230,10 @@ qemudCapsInitGuest(virCapsPtr caps, virCapsGuestPtr guest; int i; + /* Check for existance of base emulator */ + if (access(info->binary, X_OK) == -1) + return 0; + if ((guest = virCapabilitiesAddGuest(caps, hvm ? "hvm" : "xen", info->arch, @@ -241,9 +245,7 @@ qemudCapsInitGuest(virCapsPtr caps, return -1; if (hvm) { - /* Check for existance of base emulator */ - if (access(info->binary, X_OK) == 0 && - virCapabilitiesAddGuestDomain(guest, + if (virCapabilitiesAddGuestDomain(guest, "qemu", NULL, NULL, @@ -263,6 +265,7 @@ qemudCapsInitGuest(virCapsPtr caps, return -1; if (access("/dev/kvm", F_OK) == 0 && + access("/usr/bin/qemu-kvm", X_OK) == 0 && virCapabilitiesAddGuestDomain(guest, "kvm", "/usr/bin/qemu-kvm",

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[libvirt] Reminder about developer IRC channel
by Daniel P. Berrange 02 Sep '08

02 Sep '08

There're a few new people contributing patches to libvirt recently, so just thought I'd remind people that many of us hang out on IRC. The channel is #virt on irc.oftc.net. If we seem to be ignoring patches[1] you've sent, then do send nag-emails to this list, or say hello on IRC to ask about the status of things (most of us are currently on a European timezone) Regards, Daniel [1] We're not delibrately ignoring them - things just get missed / forgotten / delayed sometimes due to other things we work on. -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] Libvirt Packaged Linux Distributions
by atif bajwa 02 Sep '08

02 Sep '08

Guys, Can anyone give me list of Linux enterprise editions distributions that are packaged with xyz version of libvirt? Regards, Atif

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[libvirt] PATCH: 0/5: Enhancing the virExec function
by Daniel P. Berrange 02 Sep '08

02 Sep '08

The following series of patches do a bunch of work on the virExec function. Overall this leads to a more robust implementation with better error reporting, and an increased level functionality. This lets us remove all uses of fork/exec in libvirt and replace them with virExec. This was all motivated by some fork/exec bugs discovered when refactoring LXC driver which have potential to affect every use of fork/exec in our code. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] Unable to find node's mem and cpu api
by jovialGuy _ 01 Sep '08

01 Sep '08

hey, I am unable to find the api in java and perl binding to find the host node's current memory and cpu information. Any body has any idea where I can find the information? - Jovial

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[libvirt] Confirm libvirt supported distro?
by atif bajwa 01 Sep '08

01 Sep '08

Hi! I have a list of Linux distributions with Xen support. Please confirm libvirt (remote access, >= version 0.3.0 ) support. 1. Solaris SPARC 81/9/10 2. Solaris x64/x86 9/10 3. Red Hat RHEL AS/ES/WS 3/4/5 4. Novell SUSE & SLES 8/9/10 Regards, Atif

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[libvirt] Remote access from libvirt windows client
by atif bajwa 01 Sep '08

01 Sep '08

Hi! I am looking to add support for Xen. Please guide me which is best method to connect to remote system(host) from windows client. What privileges and binaries will be required for client program to read data only. If possible please list supported libvirt versions that can be port to windows. Also list xen-based-hypervisor distributions that I can get remote access with libvirt windows based client. Regards, Atif

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[libvirt] remote driver?
by Jun Koi 01 Sep '08

01 Sep '08

Hi, I am connecting to libvirtd with virsh using qemu:///system connection type. However, it seems virsh uses "remote" driver for all the action on the VM. So this means qemu:///system considers all the action is done "remotely" even if it is on the same physical machine? I really expected that it uses "QEMU" driver, but that is not the case. So I wonder in which case "QEMU" driver is used? Many thanks, Jun

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[libvirt] console not working anymore
by Stefan de Konink 31 Aug '08

31 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 I have reopenend the <bootloader /> bug, because with this fix I was unable to start any host again with respect to console allocation. Did anyone see this problem too? Stefan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEAREKAAYFAki69PsACgkQYH1+F2Rqwn2X4QCgkHxpu0WDDCKgoRn02P6F3hxw ncIAn09ahmzjjp3LHGuzVZ8LQREOnsoL =WVQk -----END PGP SIGNATURE-----

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[libvirt] ANNOUNCE: virt-what 1.0 - a shell script to detect if you are running in a virtual machine
by Richard W.M. Jones 31 Aug '08

31 Aug '08

I'm pleased to announce the first release of 'virt-what', which is a simple shell script that detects if you are running inside a virtual machine, and prints some "facts" about that virtual machine. This is a frequently requested feature. Home page: http://et.redhat.com/~rjones/virt-what/ Source and RPMs: http://et.redhat.com/~rjones/virt-what/files/ So far we can detect: - Xen - QEMU and KVM (but not distinguish between them) - VMware - Microsoft VirtualPC I'm hoping that people who run or develop other virtualization technology will be able to contribute snippets to detect those. It's worth saying (before Dan Berrange says it anyway) that although people often think they need this sort of feature, in most cases using this script is the WRONG THING. If you need a specific virtualization feature, then add code to your application to detect that feature. eg. If you need to make Xen hypervisor calls, your application should try to open /proc/xen/privcmd. As Dan once put it: A shell script just printing out 'native', 'dom0' or 'domU' is too simplistic to be broadly useful to management applications. The concepts are also ill-defined, eg 'native' as a concept can be a baremetal kernel, or a fully-virtualized guest, or both. 'DomU' does not distinguish full or paravirt. The distinction of 'dom0' vs 'native' is irrelevant in non-Xen virtualization systems (eg KVM). Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top

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[libvirt] How to get the real error?
by Christoph Höger 30 Aug '08

30 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I am trying to use libvirt to manage a virtualized HPC cluster software. That works well so far. But when I encounter an error and try to get it with virGetLastError() I often see an error message that makes no sense. E.g. I had virDomainCreateLinux(...) returning NULL and virGetLastError()->message stating "Failed to find the network: Is the daemon running ?" which is obviously wrong, because libvirtd is running and the network is using bridged mode (no 'source' element). This also happened when I had that particular domain name already in use and on other errors. I am using libvirt version 0.4.4. is that a known regression or am I just missing something? thanks christoph -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFIuU1FhMBO4cVSGS8RAiVRAJ0ad31+Bf5k7V7axKHDx4Yv5xc3VgCfcKsl GiHynl3ac0fdwrx+vTrvSxU= =ZqQs -----END PGP SIGNATURE-----

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[libvirt] A laundry list of "TODO" items for libvirt
by Daniel P. Berrange 29 Aug '08

29 Aug '08

A bunch of us at Red Hat had a bit of a brainstorming session to make a list of things we'd like to see added to libvirt going forward, to better support our needs for virtualization in Fedora / oVirt. We've put details of everything up on the libvirt wiki: http://wiki.libvirt.org/page/Todo This list isn't a firm commitment to actually implement these features. We may later decide that some of them don't belong in libvirt (eg, the question of allowing multiu-thread access to virConnectPtr is open to debate). Nor have we got people actually working on these items - unless explicitly noted against a todo item. If anyone is looking to do work on libvirt and isn't sure of what to work on, this list may be of interest. Also, this is a wiki, so feel free to add more ideas - or add expanded details to existing ideas. Or reply to this mail, and one of us will add new ideas to the wiki for you The only request is that you don't actually start implementing things from the list without first discussing proposals on this list, because most of these ideas need more design / analysis before its reasonable to write code Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] XML representation of security labels
by James Morris 29 Aug '08

29 Aug '08

As part of the sVirt effort, I'm investigating how and when to label the resources accessed by domains. There is already some support for querying security labels in libvirt, although it does not seem to be widely used as yet. For storage pool XML descriptors, there's a permissions element per http://libvirt.org/formatstorage.html : <permissions> <owner>0744</owner> <group>0744</group> <mode>0744</mode> <label>virt_image_t</label> </permissions> The label element in this is currently assumed by libvirt to be an SELinux security label obtainable via getfilecon(3). There are a couple of issues here: 1. We should probably not build security model specific code directly into the library. It's more flexible and also cleaner to abstract the security model out. So, I suggest making a plugin scheme similar to those already present in libvirt, where a security model can register a driver to handle abstracted operations like "getSecurityLabel". 2. The XML format for security labels needs to be extended to indicate which security model is in use, and potentially carry model-specific metadata. For SELinux, we may want to know what type of policy is active, and later, be able to interpret labels generated on other systems. In this case, I suggest we deprecate the existing label element and, if present, assume it's a plain SELinux context (or perhaps ignore it). I'd suggest we implement a new label element to avoid breaking compatibility and to avoid potential confusion with other types of device labels (e.g. as you might see via /dev/disk/by-label). So, how about the following: <seclabel> <model>  <selinux> <type>targeted</type> </selinux> </model> <value>system_u:object_r:virt_image_t:s0</value> </seclabel> The model and value elements would be mandatory, but possibly empty. The seclabel element would be a child of the permissions element: <permissions> <owner>0744</owner> <group>0744</group> <mode>0744</mode> <seclabel> <model> <selinux> <type>targeted</type> </selinux> </model> <value>system_u:object_r:virt_image_t:s0</value> </seclabel> </permissions> It would also likely be reused for labeling domains themselves, and other resources. Thoughts? - James -- James Morris <jmorris(a)namei.org>

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[libvirt] [PATCH] virConnectListAllDomains
by Richard W.M. Jones 29 Aug '08

29 Aug '08

As observed in this thread: https://www.redhat.com/archives/libvir-list/2008-July/msg00215.html several tools need to grab the complete list of domains frequently (eg. virt-manager and virt-top) and the way they do it currently is very inefficient, both in terms of the number of round-trips in the remote case (4 + 2*N calls), and the fact that we could implement drivers better if we could get all domains in a single operation. Therefore this patch adds the virConnectListAllDomains call: int virConnectListAllDomains (virConnectPtr conn, virDomainPtr **domains, virDomainInfo **infos, int stateflags); This call gets domains and virDomainInfo structures. The reasons for getting the info structures as well are that we get them anyway as a side-effect of filtering on state, and virsh, virt-top and virt-manager all get the info structures at the same time as getting the domains. As in Dan's proposal above, you can filter on state, with three special values (VIR_DOMAIN_LIST_ACTIVE, VIR_DOMAIN_LIST_INACTIVE and VIR_DOMAIN_LIST_ALL) which do what you think. virConnectListAllDomains is always available. If the driver doesn't implement it directly, then we emulate it in src/libvirt.c. This ensures that virt-manager etc can start to use this call straightaway. There is no direct implementation for Xen or QEMU yet. (If the general patch is accepted, then I'll implement at least for QEMU). However there is already a benefit to applying this patch because it optimizes the remote case from 4 + 2*N calls down to 1. There is no Python binding yet. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my OCaml programming blog: http://camltastic.blogspot.com/ Fedora now supports 64 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

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[libvirt] "Choose alarm timer" feature for kvm
by Tiziano Müller 29 Aug '08

29 Aug '08

Hi everyone In KVM it is possible to select the alarm timer being used (dynticks, hpet, rtc, unix). Is someone already working on the support of this for libvirt? If not I'll see that I can come up with patches for libvirt and virt-inst within the next month (if time permits). Cheers, Tiziano -- ------------------------------------------------------- Tiziano Müller Gentoo Linux Developer Areas of responsibility: Samba, PostgreSQL, CPP, Python, sysadmin E-Mail : dev-zero(a)gentoo.org GnuPG FP : F327 283A E769 2E36 18D5 4DE2 1B05 6A63 AE9C 1E30

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[libvirt] [PATCH]: Allow libvirt to manage bridges "plugged into" physical devices
by Chris Lalancette 29 Aug '08

29 Aug '08

All, For ovirt, we need the ability to have a bridge configured that is "plugged in" to an external interface; that is, the physical interface is one of the interfaces on the bridge. This allows us to manage physical hardware outside this box, since the ovirt WUI appliance will be hooked to this same bridge and will send/receive traffic to these external machines. Currently we are doing this "by hand" with scripts, which is clearly sub-optimal. This relatively simple patch adds a new "forward" type called "bridge" (yes, it's a bad name; I'm open to suggestions). Basically, when you have a bridge with this forward type, we take the "dev" that is specified (say, eth1), plug it into the bridge, and add the appropriate iptables rule to bridge traffic. With this in place, we can get rid of our hacky scripts and let libvirt do the dirty work for us. I also imagine this could be useful to support "xen-style" bridges, without necessarily using the Xen networking scripts. Comments? Signed-off-by: Chris Lalancette <clalance(a)redhat.com>

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[libvirt] Problems using libvirt (linking errors)
by Johannes Formann 29 Aug '08

29 Aug '08

Hello, I habe a problem using a recent libvirt-Version (0.4.4) (installed from backports.org) in my own programms. I had used an older Version a while ago, but I think something might have changed in the API(?), since the old code has the same problems now. I include the headers #include <libvirt/libvirt.h> #include <libvirt/virterror.h> but when linking, I'll get errors like XSSserver.o: In function `XSSserver::XSSserverinitializeService(void*)': /root/rsplib-2.5.0/rsplib/XSSserver.cc:68: undefined reference to `virInitialize' /root/rsplib-2.5.0/rsplib/XSSserver.cc:72: undefined reference to `virConnectOpen' here is the function: bool XSSserver::XSSserverinitializeService(void* userData) { if ( virInitialize() != 0) { puts("WARNING: vir Initializew failed\n") ; return false; } virCon=virConnectOpen(NULL); if (virCon != NULL ) { return true; } puts("WARNING: Initialisierung misslungen") ; return false; } Any hints what I've done wrong/how to debug that problem? regards Johannes

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[libvirt] PATCH: 0/4: Make LXC controller a separate binary
by Daniel P. Berrange 29 Aug '08

29 Aug '08

Currently libvirt is just forking off a child process to handle the LXC I/O controller. This works OK, but is kinda evil. This series of patches makes it into a fully-fledged exec()able binary. With a tiny bit more work, you could even use this to launch an LXC container standalone without needing libvirt - which could be useful for debugging during development at the very least. The other nice thing is that it makes a 'ps' listing more meaningful - you see a 'libvirt_lxc' process and the name of the container as a command line arg. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] PATCH: Fix fetch of NUMA info when building Xen capabilities
by Daniel P. Berrange 28 Aug '08

28 Aug '08

Currently if you use libvirt CVS HEAD on Xen >= 3.2 hypervisor it will fail to open a connection. This is because I mistakenly removed the passing of the virConnectPtr object when querying NUMA capabilities from XenD. This patch fixes that regression Daniel Index: src/xen_internal.c =================================================================== RCS file: /data/cvs/libvirt/src/xen_internal.c,v retrieving revision 1.124 diff -u -p -r1.124 xen_internal.c --- src/xen_internal.c 20 Aug 2008 20:48:36 -0000 1.124 +++ src/xen_internal.c 28 Aug 2008 15:38:05 -0000 @@ -2159,7 +2159,8 @@ struct guest_arch { static virCapsPtr -xenHypervisorBuildCapabilities(const char *hostmachine, +xenHypervisorBuildCapabilities(virConnectPtr conn, + const char *hostmachine, int host_pae, char *hvm_type, struct guest_arch *guest_archs, @@ -2185,7 +2186,7 @@ xenHypervisorBuildCapabilities(const cha if (sys_interface_version >= 4) { - if (xenDaemonNodeGetTopology(NULL, caps) != 0) { + if (xenDaemonNodeGetTopology(conn, caps) != 0) { virCapabilitiesFree(caps); return NULL; } @@ -2271,7 +2272,8 @@ xenHypervisorBuildCapabilities(const cha * Return the capabilities of this hypervisor. */ virCapsPtr -xenHypervisorMakeCapabilitiesInternal(const char *hostmachine, +xenHypervisorMakeCapabilitiesInternal(virConnectPtr conn, + const char *hostmachine, FILE *cpuinfo, FILE *capabilities) { char line[1024], *str, *token; @@ -2404,7 +2406,8 @@ xenHypervisorMakeCapabilitiesInternal(co } } - if ((caps = xenHypervisorBuildCapabilities(hostmachine, + if ((caps = xenHypervisorBuildCapabilities(conn, + hostmachine, host_pae, hvm_type, guest_archs, @@ -2425,7 +2428,7 @@ xenHypervisorMakeCapabilitiesInternal(co * Return the capabilities of this hypervisor. */ virCapsPtr -xenHypervisorMakeCapabilities(void) +xenHypervisorMakeCapabilities(virConnectPtr conn) { virCapsPtr caps; FILE *cpuinfo, *capabilities; @@ -2451,7 +2454,10 @@ xenHypervisorMakeCapabilities(void) } } - caps = xenHypervisorMakeCapabilitiesInternal(utsname.machine, cpuinfo, capabilities); + caps = xenHypervisorMakeCapabilitiesInternal(conn, + utsname.machine, + cpuinfo, + capabilities); if (cpuinfo) fclose(cpuinfo); Index: src/xen_internal.h =================================================================== RCS file: /data/cvs/libvirt/src/xen_internal.h,v retrieving revision 1.29 diff -u -p -r1.29 xen_internal.h --- src/xen_internal.h 20 Aug 2008 20:48:36 -0000 1.29 +++ src/xen_internal.h 28 Aug 2008 15:38:05 -0000 @@ -17,7 +17,7 @@ extern struct xenUnifiedDriver xenHypervisorDriver; int xenHypervisorInit (void); -virCapsPtr xenHypervisorMakeCapabilities (void); +virCapsPtr xenHypervisorMakeCapabilities (virConnectPtr conn); /* The following calls are made directly by the Xen proxy: */ @@ -38,7 +38,8 @@ int xenHypervisorClose (virConnectPtr c int xenHypervisorGetVersion (virConnectPtr conn, unsigned long *hvVer); virCapsPtr - xenHypervisorMakeCapabilitiesInternal(const char *hostmachine, + xenHypervisorMakeCapabilitiesInternal(virConnectPtr conn, + const char *hostmachine, FILE *cpuinfo, FILE *capabilities); char * Index: src/xen_unified.c =================================================================== RCS file: /data/cvs/libvirt/src/xen_unified.c,v retrieving revision 1.53 diff -u -p -r1.53 xen_unified.c --- src/xen_unified.c 20 Aug 2008 20:48:36 -0000 1.53 +++ src/xen_unified.c 28 Aug 2008 15:38:05 -0000 @@ -333,7 +333,7 @@ xenUnifiedOpen (virConnectPtr conn, xmlU } } - if (!(priv->caps = xenHypervisorMakeCapabilities())) { + if (!(priv->caps = xenHypervisorMakeCapabilities(conn))) { DEBUG0("Failed to make capabilities"); goto fail; } Index: tests/xencapstest.c =================================================================== RCS file: /data/cvs/libvirt/tests/xencapstest.c,v retrieving revision 1.14 diff -u -p -r1.14 xencapstest.c --- tests/xencapstest.c 25 Jul 2008 13:17:27 -0000 1.14 +++ tests/xencapstest.c 28 Aug 2008 15:38:05 -0000 @@ -49,7 +49,7 @@ static int testCompareFiles(const char * if (!(fp2 = fopen(capabilities, "r"))) goto fail; - if (!(caps = xenHypervisorMakeCapabilitiesInternal(hostmachine, fp1, fp2))) + if (!(caps = xenHypervisorMakeCapabilitiesInternal(NULL, hostmachine, fp1, fp2))) goto fail; if (!(actualxml = virCapabilitiesFormatXML(caps))) -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] Need Info on virNodeGetCellsFreeMemory
by ajishrao 28 Aug '08

28 Aug '08

Hi, how to find the memory utilization of the whole which is running with some guest? By libvirt I can only see virNodeGetCellsFreeMemory relevant API, But didn't understand how to use it. Thanks & Regards --Ajish

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Re: [libvirt] Error compiling libvirt 0.4.4
by Richard W.M. Jones 28 Aug '08

28 Aug '08

On Thu, Aug 28, 2008 at 11:25:44AM -0300, Everton P. Alexandre wrote: > I managed to do the installation!!! But now, when I > try to use the virsh or to execute a program, the > following message appear: > > libvir: Remote error : No such file or directory > libvir: warning : Failed to find the network: Is the > daemon running? So as the message says, you need to run the daemon (libvirtd). Well, truthfully you don't _need_ to run it, unless you want certain features like remote access, managed networks or QEMU support. If you've got libvirtd running but you still get that message, then it'll probably be either a security or a paths problem. http://libvirt.org/remote.html Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my OCaml programming blog: http://camltastic.blogspot.com/ Fedora now supports 64 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

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[libvirt] [PATCH] enable parallel builds
by James Morris 28 Aug '08

28 Aug '08

I'm not sure if this is the best way to do this, but it seems to work. ---- Enable parallel compilation of the repository when running the autobuild script and/or via rpmbuild. --- autobuild.sh | 15 ++++++++++++++- libvirt.spec.in | 2 +- 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/autobuild.sh b/autobuild.sh index 7ae5d1e..1a5413b 100755 --- a/autobuild.sh +++ b/autobuild.sh @@ -21,7 +21,20 @@ rm -rf coverage --with-lxc \ --with-xen-proxy -make +# from the gdc spec file +# if RPM_BUILD_NCPUS unset, set it +if [ -z "$RPM_BUILD_NCPUS" ] ; then + if [ -x /usr/bin/getconf ] ; then + RPM_BUILD_NCPUS=$(/usr/bin/getconf _NPROCESSORS_ONLN) + if [ $RPM_BUILD_NCPUS -eq 0 ]; then + RPM_BUILD_NCPUS=1 + fi + else + RPM_BUILD_NCPUS=1 + fi +fi + +make -j$RPM_BUILD_NCPUS make install set -o pipefail diff --git a/libvirt.spec.in b/libvirt.spec.in index d37c0e0..cd8e937 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -169,7 +169,7 @@ of recent versions of Linux (and other OSes). --with-init-script=redhat \ --with-qemud-pid-file=%{_localstatedir}/run/libvirt_qemud.pid \ --with-remote-file=%{_localstatedir}/run/libvirtd.pid -make +make %{?_smp_mflags} %install rm -fr %{buildroot}

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[libvirt] Exposing some unique features?
by Nguyen Anh Quynh 28 Aug '08

28 Aug '08

Hi, Though libvirt tries very hard to hide the difference between hypervisors behind an abstraction layer, there are still differences that we might want to expose to the users. For example, QEMU has the monitor interface, which provides some unique functions. Users might want to have access to the monitor interface and send command to it (like "gdbserver" command?). So how can we expose such information? We can have a new driver function, which return an opaque structure. The content of the structure is of course depends on the hypervisor type. One problem is that this might be dangerous if users relies on the QEMU monitor to execute some functions that should be done under control. Idea? Thanks, Quynh

3 5

[libvirt] Writing a new driver for libvirt
by Orr, David-P64407 27 Aug '08

27 Aug '08

Hey all, I am new to libvirt and have been asked to look at the possibility of writing a libvirt driver for a hypervisor we are using. I am wondering if someone can give me the basics on what is involved in accomplishing this task, what are the basics of writing a new driver? I have looked at the documentation posted and been poking around the code and just wanted to ask someone to point me in the right direction. Thanks in advance. David Orr General Dynamics Software Engineer David.Orr(a)gdc4s.com

2 3

[libvirt] [PATCH] storage pool discovery
by David Lively 27 Aug '08

27 Aug '08

Hi Folks - Here's my second pass at storage pool discovery. I've taken Daniel's suggestion and made it return a single XML doc containing <source> elements rather than an array of <pool> docs (and also incorporated suggestions from Daniel V and Jim M). Note that the storage <source> <name> patch is closely related (without it, the <source> docs returned for logical pools aren't correct). Dave

3 15

Re: [libvirt] Error compiling libvirt 0.4.4
by Richard W.M. Jones 27 Aug '08

27 Aug '08

On Wed, Aug 27, 2008 at 10:42:38AM -0300, Everton P. Alexandre wrote: > > "Richard W.M. Jones" <rjones(a)redhat.com> escreveu: On Thu, Aug 21, 2008 at 06:57:40PM -0300, Everton P. Alexandre wrote: > > > In file included from /usr/include/xen/dom0_ops.h:31, > > > from xen_unified.c:29: > > > /usr/include/xen/xen.h:578: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'char' > > > > Did you find out what was causing this? > > No, I don't. Did this problem happen with you? No. Does it still happen for you? Have you tried the latest version from CVS? Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my OCaml programming blog: http://camltastic.blogspot.com/ Fedora now supports 64 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

1 0

[libvirt] PATCH: Handle case of no domains in openvz driver
by Daniel P. Berrange 27 Aug '08

27 Aug '08

If running the openvz driver on a machine with no containers currently defined, it throws an error # ./src/virsh --connect openvz:///system list libvir: OpenVZ error : internal error Failed to parse vzlist output Id Name State ---------------------------------- This is because of a failure to check for the EOF condition. This patch adds the missing check Daniel diff -r 1fc0d8258838 src/openvz_conf.c --- a/src/openvz_conf.c Tue Aug 19 13:58:56 2008 +0100 +++ b/src/openvz_conf.c Tue Aug 19 13:59:51 2008 +0100 @@ -534,6 +534,9 @@ openvzGetVPSInfo(virConnectPtr conn) { vm = *pnext; if (fscanf(fp, "%d %s\n", &veid, status) != 2) { + if (feof(fp)) + break; + openvzError(conn, VIR_ERR_INTERNAL_ERROR, _("Failed to parse vzlist output")); goto error; -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: REmove bogus call to virStateInit in openvz driver
by Daniel P. Berrange 27 Aug '08

27 Aug '08

For some unknown reason there is a call to virStateInitialize() in the openvz driver's open method. This is absolutely forbidden - this API is only intended for use by the daemon. This patch removes this bogus call and makes it call the openvz setup APIs directly. Daniel diff -r c2e95cd51bc3 src/openvz_driver.c --- a/src/openvz_driver.c Wed Aug 13 12:50:55 2008 +0000 +++ b/src/openvz_driver.c Tue Aug 19 12:11:37 2008 +0100 @@ -81,10 +81,6 @@ static int openvzNumDomains(virConnectPt static int openvzNumDomains(virConnectPtr conn); static int openvzListDefinedDomains(virConnectPtr conn, char **const names, int nnames); static int openvzNumDefinedDomains(virConnectPtr conn); -static int openvzStartup(void); -static int openvzShutdown(void); -static int openvzReload(void); -static int openvzActive(void); static virDomainPtr openvzDomainDefineXML(virConnectPtr conn, const char *xml); static virDomainPtr openvzDomainCreateLinux(virConnectPtr conn, const char *xml, @@ -697,7 +693,8 @@ static virDrvOpenStatus openvzOpen(virCo conn->privateData = &ovz_driver; - virStateInitialize(); + openvzAssignUUIDs(); + vms = openvzGetVPSInfo(conn); ovz_driver.vms = vms; @@ -849,27 +846,6 @@ Version: 2.2 static int openvzNumDefinedDomains(virConnectPtr conn ATTRIBUTE_UNUSED) { return ovz_driver.num_inactive; -} - -static int openvzStartup(void) { - openvzAssignUUIDs(); - - return 0; -} - -static int openvzShutdown(void) { - - return 0; -} - -static int openvzReload(void) { - - return 0; -} - -static int openvzActive(void) { - - return 1; } static virDriver openvzDriver = { @@ -934,17 +910,8 @@ static virDriver openvzDriver = { NULL, /* nodeGetFreeMemory */ }; -static virStateDriver openvzStateDriver = { - openvzStartup, - openvzShutdown, - openvzReload, - openvzActive, - NULL, /* sigHandler */ -}; - int openvzRegister(void) { virRegisterDriver(&openvzDriver); - virRegisterStateDriver(&openvzStateDriver); return 0; } -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: Allow specific FDs to be kept open in virExec()
by Daniel P. Berrange 27 Aug '08

27 Aug '08

With my recent patches to virExec(), all FDs except stdin/out/err are closed before the child is exec'd to prevent accidental leaks. Of course I forgot the one key place where we need to propagate FDs... The TAP devices passed to QEMU. This patch adds a 'keepfd' parameter to virExec() which allows the caller to specify a bitset of file descriptors to keep open, and updates the callers to use this as required. The QEMU driver specifies any TAP fds and the LXC driver specifies its PTY this way removing a previous hack. QEMU networking works again with fix.... lxc_driver.c | 17 ++++++++++++++--- openvz_driver.c | 6 ++++-- qemu_driver.c | 26 +++++++++++++++++++------- storage_backend.c | 6 ++++-- util.c | 8 ++++++-- util.h | 7 +++++++ 6 files changed, 54 insertions(+), 16 deletions(-) Daniel Index: src/lxc_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/lxc_driver.c,v retrieving revision 1.23 diff -u -p -r1.23 lxc_driver.c --- src/lxc_driver.c 20 Aug 2008 20:55:32 -0000 1.23 +++ src/lxc_driver.c 21 Aug 2008 13:52:25 -0000 @@ -615,6 +615,8 @@ static int lxcControllerStart(virConnect const char **largv = NULL; pid_t child; int status; + char *keepfd = NULL; + char appPtyStr[30]; #define ADD_ARG_SPACE \ do { \ @@ -638,11 +640,13 @@ static int lxcControllerStart(virConnect goto no_memory; \ } while (0) + snprintf(appPtyStr, sizeof(appPtyStr), "%d", appPty); + ADD_ARG_LIT(vm->def->emulator); ADD_ARG_LIT("--name"); ADD_ARG_LIT(vm->def->name); ADD_ARG_LIT("--console"); - ADD_ARG_LIT("0"); /* Passing console master PTY as FD 0 */ + ADD_ARG_LIT(appPtyStr); ADD_ARG_LIT("--background"); for (i = 0 ; i < nveths ; i++) { @@ -652,10 +656,15 @@ static int lxcControllerStart(virConnect ADD_ARG(NULL); - vm->stdin_fd = appPty; /* Passing console master PTY as FD 0 */ + vm->stdin_fd = -1; vm->stdout_fd = vm->stderr_fd = logfd; - if (virExec(conn, largv, NULL, &child, + if (VIR_ALLOC_N(keepfd, VIR_EXEC_FDSET_SIZE()) < 0) + goto no_memory; + + VIR_EXEC_FDSET_ON(keepfd, appPty); + + if (virExec(conn, largv, NULL, keepfd, &child, vm->stdin_fd, &vm->stdout_fd, &vm->stderr_fd, VIR_EXEC_NONE) < 0) goto cleanup; @@ -686,6 +695,8 @@ static int lxcControllerStart(virConnect ret = 0; cleanup: + VIR_FREE(keepfd); + for (i = 0 ; i < largc ; i++) VIR_FREE(largv[i]); Index: src/openvz_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/openvz_driver.c,v retrieving revision 1.43 diff -u -p -r1.43 openvz_driver.c --- src/openvz_driver.c 20 Aug 2008 20:48:36 -0000 1.43 +++ src/openvz_driver.c 21 Aug 2008 13:52:25 -0000 @@ -807,7 +807,8 @@ static int openvzListDomains(virConnectP char *endptr; const char *cmd[] = {VZLIST, "-ovpsid", "-H" , NULL}; - ret = virExec(conn, cmd, NULL, &pid, -1, &outfd, &errfd, VIR_EXEC_NONE); + ret = virExec(conn, cmd, NULL, NULL, + &pid, -1, &outfd, &errfd, VIR_EXEC_NONE); if(ret == -1) { openvzError(conn, VIR_ERR_INTERNAL_ERROR, _("Could not exec %s"), VZLIST); @@ -844,7 +845,8 @@ static int openvzListDefinedDomains(virC const char *cmd[] = {VZLIST, "-ovpsid", "-H", "-S", NULL}; /* the -S options lists only stopped domains */ - ret = virExec(conn, cmd, NULL, &pid, -1, &outfd, &errfd, VIR_EXEC_NONE); + ret = virExec(conn, cmd, NULL, NULL, + &pid, -1, &outfd, &errfd, VIR_EXEC_NONE); if(ret == -1) { openvzError(conn, VIR_ERR_INTERNAL_ERROR, _("Could not exec %s"), VZLIST); Index: src/qemu_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/qemu_driver.c,v retrieving revision 1.111 diff -u -p -r1.111 qemu_driver.c --- src/qemu_driver.c 20 Aug 2008 20:48:36 -0000 1.111 +++ src/qemu_driver.c 21 Aug 2008 13:52:26 -0000 @@ -847,6 +847,7 @@ static int qemudStartVMDaemon(virConnect int *tapfds = NULL; int ntapfds = 0; int qemuCmdFlags; + char *keepfd = NULL; if (virDomainIsActive(vm)) { qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, @@ -950,12 +951,22 @@ static int qemudStartVMDaemon(virConnect vm->stdout_fd = -1; vm->stderr_fd = -1; - ret = virExec(conn, argv, NULL, &vm->pid, - vm->stdin_fd, &vm->stdout_fd, &vm->stderr_fd, - VIR_EXEC_NONBLOCK); - if (ret == 0) { - vm->def->id = driver->nextvmid++; - vm->state = migrateFrom ? VIR_DOMAIN_PAUSED : VIR_DOMAIN_RUNNING; + if (VIR_ALLOC_N(keepfd, VIR_EXEC_FDSET_SIZE()) < 0) { + ret = -1; + qemudReportError(conn, NULL, NULL, VIR_ERR_NO_MEMORY, NULL); + } else { + for (i = 0 ; i < ntapfds ; i++) + VIR_EXEC_FDSET_ON(keepfd, tapfds[i]); + + ret = virExec(conn, argv, NULL, keepfd, &vm->pid, + vm->stdin_fd, &vm->stdout_fd, &vm->stderr_fd, + VIR_EXEC_NONBLOCK); + if (ret == 0) { + vm->def->id = driver->nextvmid++; + vm->state = migrateFrom ? VIR_DOMAIN_PAUSED : VIR_DOMAIN_RUNNING; + } + + VIR_FREE(keepfd); } for (i = 0 ; argv[i] ; i++) @@ -1219,7 +1230,8 @@ dhcpStartDhcpDaemon(virConnectPtr conn, if (qemudBuildDnsmasqArgv(conn, network, &argv) < 0) return -1; - ret = virExec(conn, argv, NULL, &network->dnsmasqPid, -1, NULL, NULL, VIR_EXEC_NONBLOCK); + ret = virExec(conn, argv, NULL, NULL, + &network->dnsmasqPid, -1, NULL, NULL, VIR_EXEC_NONBLOCK); for (i = 0; argv[i]; i++) VIR_FREE(argv[i]); Index: src/storage_backend.c =================================================================== RCS file: /data/cvs/libvirt/src/storage_backend.c,v retrieving revision 1.19 diff -u -p -r1.19 storage_backend.c --- src/storage_backend.c 20 Aug 2008 09:24:14 -0000 1.19 +++ src/storage_backend.c 21 Aug 2008 13:52:26 -0000 @@ -403,7 +403,8 @@ virStorageBackendRunProgRegex(virConnect /* Run the program and capture its output */ - if (virExec(conn, prog, NULL, &child, -1, &fd, NULL, VIR_EXEC_NONE) < 0) { + if (virExec(conn, prog, NULL, NULL, + &child, -1, &fd, NULL, VIR_EXEC_NONE) < 0) { goto cleanup; } @@ -537,7 +538,8 @@ virStorageBackendRunProgNul(virConnectPt v[i] = NULL; /* Run the program and capture its output */ - if (virExec(conn, prog, NULL, &child, -1, &fd, NULL, VIR_EXEC_NONE) < 0) { + if (virExec(conn, prog, NULL, NULL, + &child, -1, &fd, NULL, VIR_EXEC_NONE) < 0) { goto cleanup; } Index: src/util.c =================================================================== RCS file: /data/cvs/libvirt/src/util.c,v retrieving revision 1.53 diff -u -p -r1.53 util.c --- src/util.c 20 Aug 2008 19:42:36 -0000 1.53 +++ src/util.c 21 Aug 2008 13:52:26 -0000 @@ -132,6 +132,7 @@ int virExec(virConnectPtr conn, const char *const*argv, const char *const*envp, + const char *keepfd, int *retpid, int infd, int *outfd, int *errfd, int flags) { @@ -293,7 +294,9 @@ virExec(virConnectPtr conn, if (i != infd && i != null && i != childout && - i != childerr) + i != childerr && + (!keepfd || + !VIR_EXEC_FDSET_ISON(keepfd, i))) close(i); if (flags & VIR_EXEC_DAEMON) { @@ -403,7 +406,8 @@ virRun(virConnectPtr conn, int *status) { int childpid, exitstatus, ret; - if ((ret = virExec(conn, argv, NULL, &childpid, -1, NULL, NULL, VIR_EXEC_NONE)) < 0) + if ((ret = virExec(conn, argv, NULL, NULL, + &childpid, -1, NULL, NULL, VIR_EXEC_NONE)) < 0) return ret; while ((ret = waitpid(childpid, &exitstatus, 0) == -1) && errno == EINTR); Index: src/util.h =================================================================== RCS file: /data/cvs/libvirt/src/util.h,v retrieving revision 1.25 diff -u -p -r1.25 util.h --- src/util.h 20 Aug 2008 19:42:36 -0000 1.25 +++ src/util.h 21 Aug 2008 13:52:26 -0000 @@ -33,9 +33,16 @@ enum { VIR_EXEC_DAEMON = (1 << 1), }; +#define VIR_EXEC_FDSET_SIZE() (sysconf(_SC_OPEN_MAX)/8) +#define VIR_EXEC_FDSET_CLEAR(set) memset((set), 0, VIR_EXEC_FDSET_SIZE()) +#define VIR_EXEC_FDSET_ON(set, fd) (set[(fd)/8] |= (1 << ((fd)%8))) +#define VIR_EXEC_FDSET_OFF(set, fd) (set[(fd)/8] &= ~(1 << ((fd)%8))) +#define VIR_EXEC_FDSET_ISON(set, fd) (set[(fd)/8] & (1 << ((fd)%8))) + int virExec(virConnectPtr conn, const char *const*argv, const char *const*envp, + const char *keepfd, int *retpid, int infd, int *outfd, -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

3 8

[libvirt] Proposed functionality: API to extract host description from saved state, restore with modified XML
by Charles Duffy 27 Aug '08

27 Aug '08

Per subject. Obviously only for use by folks who *really* know what they're doing. :) I'm looking for the ability to restore a snapshot saved with domain.save(), with disk images pointing at a different location (in my particular use case, pointing at a an empty copy-and-write image backending into a snapshot of the old disk state). Further, as I may run multiple copies of the same host at once (from the same initial state, against different copy-on-write disk images backending into the same read-only store, into different disconnected networks), the UUID as well as the name may need to be changed. I could just rewrite the header of the saved-state file, but this has a few disadvantages: - To mimic the copy-on-write behavior of the disk images, I would need to copy the entire saved-domain file. I'm trying to minimize the time and disk penalty of snapshot/restore, so this is suboptimal. - My code is dependent on the file format used by the particular backend, and may break when that backend is revved. Would a patch adding API calls to - return the XML description of a saved host, given the name - restore a saved host with a different description be considered welcome? I presume that to maintain backwards compatibility, the latter would be expected to be exposed to clients via a new call, rather than adding a parameter to virDomainRestore(); in communicating with the drivers, on the other hand, my first instinct would be to add an extra parameter to virDrvDomainRestore. Thanks!

3 2

[libvirt] virConnectOpenReadOnly?
by Jun Koi 27 Aug '08

27 Aug '08

Hi, According to the comment of virConnectOpenReadOnly, this function has some restrictions on available methods to control domains. Could you be more specific? What kind of restrictions we are having (compare to virConnectOpen())? And when should we use virConnectOpenReadOnly() instead of virConnectOpen() ? Thanks, Jun

2 1

[libvirt] Error compiling libvirt 0.4.4
by Everton P. Alexandre 27 Aug '08

27 Aug '08

hi I'm trying to compile the libvirt 0.4.4. I'm getting the error below: gcc -DHAVE_CONFIG_H -I. -I.. -I../gnulib/lib -I../gnulib/lib -I../include -I../include -I../qemud -I/usr/local/include/libxml2 -DBINDIR=\"/usr/local/libexec\" -DSBINDIR=\"/usr/local/sbin\" -DSYSCONF_DIR=\"/usr/local/etc\" -DLOCALEBASEDIR=\"/usr/local/share/locale\" -DLOCAL_STATE_DIR=\"/usr/local/var\" -DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -DWITH_QEMU -DWITH_TEST -DWITH_REMOTE -DWITH_LIBVIRTD -DWITH_XEN -DIN_LIBVIRT -g -O2 -MT libvirt_la-xen_unified.lo -MD -MP -MF .deps/libvirt_la-xen_unified.Tpo -c xen_unified.c -fPIC -DPIC -o .libs/libvirt_la-xen_unified.o In file included from /usr/include/xen/dom0_ops.h:31, from xen_unified.c:29: /usr/include/xen/xen.h:578: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'char' /usr/include/xen/xen.h:579: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'short' /usr/include/xen/xen.h:580: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int' /usr/include/xen/xen.h:581: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'long' make[2]: *** [libvirt_la-xen_unified.lo] Error 1 make[2]: Leaving directory `/home/everton/libvirt-0.4.4/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/everton/libvirt-0.4.4' make: *** [all] Error 2 Thank you Everton Alexandre --------------------------------- Novos endereços, o Yahoo! que você conhece. Crie um email novo com a sua cara @ymail.com ou @rocketmail.com.

2 1

[libvirt] LIBVIR_VERSION_NUMBER ?
by Jun Koi 27 Aug '08

27 Aug '08

Hi, According to libvirt.h: /** * LIBVIR_VERSION_NUMBER: * * Macro providing the version of the library as * version * 1,000,000 + minor * 1000 + micro */ #define LIBVIR_VERSION_NUMBER 4004 The comment is incorrect, as 4004 is not how it is supposed to be. So we should fix either the comment (better?), or the version. Thanks, Jun

2 2

[libvirt] libvir: Xen error : Domain not found: xenUnifiedDomainLookupByID
by mantra UNIX 27 Aug '08

27 Aug '08

Hi, After rebooting/shutdown/poweroff a domU any of the "virsh" commands display the above error message. Only way to get rid of it is via "reboot", this sucks ! I am using RHEL5.2 with all the updates applied. Whats the alternative ? -- Regards, mantra - Instrument of Thought

1 0

RE: [libvirt] DISREGARD Problems starting XEN HVM with libvirt
by Matthew Donovan 26 Aug '08

26 Aug '08

It turns out everything was booting, they just weren't configured to give a console or display a GUI window. -matthew > -----Original Message----- > From: Matthew Donovan [mailto:matthew@atc-nycorp.com] > Sent: Tuesday, August 26, 2008 9:25 AM > To: libvir-list(a)redhat.com > Subject: [libvirt] Problems starting XEN HVM with libvirt > > I've been having trouble getting a Xen HVM guest started > using libvirt. > I've tried Windows Vista, Fedora Core 8, and Fedora Core 6 > guests. Domain 0 > is FC 8. The only guest that starts correctly is the FC 6 guest. Has > anyone else encountered something like this? Is there a > master list of > guest OS's that libvirt supports? > > Thanks > -matthew > > > CODE: > > #include <stdio.h> > #include <libvirt/libvirt.h> > #include <libvirt/virterror.h> > > > const char* foo = > "<domain type='xen'>" > "<name>fc6</name>" > "<os>" > "<type>hvm</type>" > "<loader>/usr/lib/xen/boot/hvmloader</loader>" > "<boot dev='hd'/>" > "</os>" > "<memory>512000</memory>" > "<vcpu>1</vcpu>" > "<on_shutdown>shutdown</on_shutdown>" > "<on_reboot>restart</on_reboot>" > "<on_crash>restart</on_crash>" > "<features>" > "<pae/>" > "<acpi/>" > "<apic/>" > "</features>" > "<clock sync='localtime'/>" > "<devices>" > "<emulator>/usr/lib/xen/bin/qemu-dm</emulator>" > "<disk type='block'>" > "<source dev='/dev/vgvms/fc6_test'/>" > "<target dev='hda'/>" > "</disk>" > "<interface type='ioemu'>" > "<mac address='7A:AB:D0:01:82:98'/>" > "</interface>" > "<input type='tablet' bus='usb'/>" > "<graphics type='sdl' password=''/>" > "<serial type='pty'/>" > "</devices>" > "</domain>"; > > > int main (int argc, char** argv) > { > virConnectPtr con; /* connection to the Xen hypervisor */ > virDomainPtr domain; > > virInitialize(); > > con = virConnectOpen ("xen:///"); > if (!con) { > virErrorPtr err = virGetLastError (); > printf ("virConnectOpen failed: %s\n", > err->message); > return -1; > } > > domain = virDomainDefineXML (con, foo); > if (!domain) { > virErrorPtr err = virConnGetLastError (con); > printf ("virDomainDefineXML failed: %s\n", > err->message); > > } else { > > if (virDomainCreate (domain) < 0) { > virErrorPtr err = virConnGetLastError (con); > printf ("virDomainCreate failed: %s\n", > err->message); > } else { > virDomainInfo info = {0}; > virDomainGetInfo (domain, &info); > printf ("state = %d\n", info.state); > getchar (); > } > } > > virConnectClose (con); > return 0; > } > > -- > Libvir-list mailing list > Libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list >

1 0

[libvirt] Problems starting XEN HVM with libvirt
by Matthew Donovan 26 Aug '08

26 Aug '08

I've been having trouble getting a Xen HVM guest started using libvirt. I've tried Windows Vista, Fedora Core 8, and Fedora Core 6 guests. Domain 0 is FC 8. The only guest that starts correctly is the FC 6 guest. Has anyone else encountered something like this? Is there a master list of guest OS's that libvirt supports? Thanks -matthew CODE: #include <stdio.h> #include <libvirt/libvirt.h> #include <libvirt/virterror.h> const char* foo = "<domain type='xen'>" "<name>fc6</name>" "<os>" "<type>hvm</type>" "<loader>/usr/lib/xen/boot/hvmloader</loader>" "<boot dev='hd'/>" "</os>" "<memory>512000</memory>" "<vcpu>1</vcpu>" "<on_shutdown>shutdown</on_shutdown>" "<on_reboot>restart</on_reboot>" "<on_crash>restart</on_crash>" "<features>" "<pae/>" "<acpi/>" "<apic/>" "</features>" "<clock sync='localtime'/>" "<devices>" "<emulator>/usr/lib/xen/bin/qemu-dm</emulator>" "<disk type='block'>" "<source dev='/dev/vgvms/fc6_test'/>" "<target dev='hda'/>" "</disk>" "<interface type='ioemu'>" "<mac address='7A:AB:D0:01:82:98'/>" "</interface>" "<input type='tablet' bus='usb'/>" "<graphics type='sdl' password=''/>" "<serial type='pty'/>" "</devices>" "</domain>"; int main (int argc, char** argv) { virConnectPtr con; /* connection to the Xen hypervisor */ virDomainPtr domain; virInitialize(); con = virConnectOpen ("xen:///"); if (!con) { virErrorPtr err = virGetLastError (); printf ("virConnectOpen failed: %s\n", err->message); return -1; } domain = virDomainDefineXML (con, foo); if (!domain) { virErrorPtr err = virConnGetLastError (con); printf ("virDomainDefineXML failed: %s\n", err->message); } else { if (virDomainCreate (domain) < 0) { virErrorPtr err = virConnGetLastError (con); printf ("virDomainCreate failed: %s\n", err->message); } else { virDomainInfo info = {0}; virDomainGetInfo (domain, &info); printf ("state = %d\n", info.state); getchar (); } } virConnectClose (con); return 0; }

1 0

[libvirt] "static" ip address
by Olivier Deckmyn 26 Aug '08

26 Aug '08

Hi, I'm using KVM with the wonderful help of libvir (virsh), on a to-be-production-ready server of mine. I would like to be able to choose on a way or another the ip of each of my VM. As far as I can understand, the only way to get an IP (from a vm point of view) if the dhcp it. But I have no garantee vm1 will always get x.x.x.1 Ip adress... Is there a solution please ? (googling this list did'nt answer :() Thanx

7 20

[libvirt] libvir: Xen error
by mantra UNIX 25 Aug '08

25 Aug '08

Hello everyone, I get the following error when i try to redtart a domain; # virsh list libvir: Xen error : Domain not found: xenUnifiedDomainLookupByID I am using RHEL5.2 on i386, I have searched for the error on web and on RedHat but could not find any. -- Regards, mantra - Instrument of Thought

1 0

[libvirt] <bootloader /> BUG
by Stefan de Konink 25 Aug '08

25 Aug '08

With the tip of DanB I am currently using the inactive XML storage quite satisfied with the concept of first undefining than starting. But there is still a bug. The inactive XML adds a <bootloader /> tag. Now that is (in my perspective) not a bug, but it it is that libvirt expects a config. In my personal believes the tag shouldn't be there if there is no config; or libvirt should not libvir: Xen Daemon error : POST operation failed: xend_post: error from xen daemon: (xend.err 'Error creating domain: Had a bootloader specified, but no disks are bootable') error: Failed to create domain from /mnt/netapp/users/klant2/mono/index.xml I just checked with the last git version and the bug still exists... I hope someone can look into this asap. It is a blocker for development. Stefan

3 3

[libvirt] inactive domain list in virsh
by Jun Koi 25 Aug '08

25 Aug '08

Hi, I am wondering if there is a way to list all the inactive domain inside virsh? That would be useful to have such a command, so we can see which domain can be started. Thanks, J

1 1

[libvirt] ruby-libvirt bindings
by Donald Plummer 25 Aug '08

25 Aug '08

I'm trying to get the ruby-libvirt bindings working. I've installed them from the gem (ruby-libvirt-0.0.7.gem), but I'm having trouble. My setup is: Client: Debian Lenny, libvirt 0.4.4 compilied with Xen API 3.0.1 support Server: CentOS 5.2, libvirt 0.3.3 compilied with Xen API 3.0.1 (running Xen 3.1.0) The virsh command will connect from the client to the server using xen+ssh, but not the default TLS. The error I get when trying to use TLS is: dplummer@vps-manager:~$ virsh -c xen://lvh2/ libvir: Remote error : No route to host error: failed to connect to the hypervisor I've setup certs on both the client and the server, there are no firewalls between them, and I can ping between them just fine. Anyway, what I'm really trying to do is get the ruby bindings working, and since the xen+ssh virsh connection works, I'm trying that. But getting the error "socket closed unexpectedly". -------------------- dplummer@vps-manager:~$ irb irb(main):001:0> require 'libvirt' => true irb(main):002:0> system('virsh -c xen+ssh://root@lvh2/ version') Compiled against library: libvir 0.4.4 Using library: libvir 0.4.4 Using API: Xen 3.0.1 Running hypervisor: Xen 3.1.0 => true irb(main):003:0> conn = Libvirt::open('xen+ssh://root@lvh2/') libvir: Remote error : socket closed unexpectedly Libvirt::ConnectionError: Failed to open xen+ssh://root@lvh2 from (irb):3:in `open' from (irb):3 from :0 irb(main):004:0> -------------------- Anyone have any suggestions? Anyone get this to work? Thanks!

2 1

[libvirt] [PATCH] Fix cd eject segfault
by Cole Robinson 23 Aug '08

23 Aug '08

The cdrom eject code was trying to dereference the NULL source of an empty cdrom. Attached patch fixes this. Thanks, Cole commit 5925689b5b94b29a520dcfbc7f4f1cfa0a0a0183 Author: Cole Robinson <crobinso(a)dhcp-100-19-219.bos.redhat.com> Date: Thu Aug 21 17:56:25 2008 -0400 Prevent cdrom eject from segfaulting when setting new disk source. diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 06fbe55..769f34f 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -2953,6 +2953,7 @@ static int qemudDomainChangeCDROM(virDomainPtr dom, virDomainDiskDefPtr newdisk) { struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData; char *cmd, *reply, *safe_path; + char *newsrc = NULL; if (newdisk->src) { safe_path = qemudEscapeMonitorArg(newdisk->src); @@ -2972,6 +2973,13 @@ static int qemudDomainChangeCDROM(virDomainPtr dom, } VIR_FREE(safe_path); + newsrc = strdup(newdisk->src); + if (!newsrc) { + qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, + "%s", _("out of memory")); + return -1; + } + } else if (asprintf(&cmd, "eject cdrom") == -1) { qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "%s", _("out of memory")); @@ -2982,11 +2990,17 @@ static int qemudDomainChangeCDROM(virDomainPtr dom, qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED, "%s", _("cannot change cdrom media")); VIR_FREE(cmd); + VIR_FREE(newsrc); return -1; } VIR_FREE(reply); VIR_FREE(cmd); - strcpy(olddisk->src, newdisk->src); + + VIR_FREE(olddisk->src); + if (newsrc) { + olddisk->src = newsrc; + newsrc = NULL; + } olddisk->type = newdisk->type; return 0; }

3 3

[libvirt] [PATCH] Delete veth devices during lxcVMCleanup
by Dan Smith 22 Aug '08

22 Aug '08

This makes sure to delete veth devices after we've killed the container. In the case of a destroy or crash, this ensures the system is cleaned up properly. To be applied atop Daniel Berrange's current LXC patch stack. diff -r b18ae864eb98 -r cd0bd9a6288a src/lxc_driver.c --- a/src/lxc_driver.c Wed Aug 13 09:40:08 2008 -0700 +++ b/src/lxc_driver.c Thu Aug 14 08:50:49 2008 -0700 @@ -375,6 +375,7 @@ int rc = -1; int waitRc; int childStatus = -1; + virDomainNetDefPtr net; while (((waitRc = waitpid(vm->pid, &childStatus, 0)) == -1) && errno == EINTR) @@ -403,6 +404,11 @@ vm->pid = -1; vm->def->id = -1; vm->monitor = -1; + + for (net = vm->def->nets; net; net = net->next) { + vethInterfaceUpOrDown(net->ifname, 0); + vethDelete(net->ifname); + } return rc; }

3 3

[libvirt] [PATCH] Check disk target collision when parsing domain xml
by Cole Robinson 22 Aug '08

22 Aug '08

The current domain xml parsing doesn't check if disks are specified with duplicate targets ("hda" etc.). The attached patch adds a check for this. Thanks, Cole commit 27df1653474738a2ce83c89e7bdb2c4f7327f9b6 Author: Cole Robinson <crobinso(a)dhcp-100-19-219.bos.redhat.com> Date: Thu Aug 21 14:58:04 2008 -0400 Check for duplicate disk targets when parsing domain xml. diff --git a/src/domain_conf.c b/src/domain_conf.c index 6b23474..ed6cc8b 100644 --- a/src/domain_conf.c +++ b/src/domain_conf.c @@ -1955,6 +1955,12 @@ static virDomainDefPtr virDomainDefParseXML(virConnectPtr conn, } else { virDomainDiskDefPtr ptr = def->disks; while (ptr) { + if (ptr->next && STREQ(disk->dst, ptr->next->dst)) { + virDomainReportError(conn, VIR_ERR_INTERNAL_ERROR, + _("duplicate disk target '%s'"), + disk->dst); + goto error; + } if (!ptr->next || virDomainDiskCompare(disk, ptr->next) < 0) { disk->next = ptr->next; ptr->next = disk;

3 3

RE: [libvirt] Using Xen config files
by Matthew Donovan 22 Aug '08

22 Aug '08

Xen and Xen-devel are 3.1.2. I'm using version 0.4.4 of libvirt. -matthew > -----Original Message----- > From: Richard W.M. Jones [mailto:rjones@redhat.com] > Sent: Friday, August 22, 2008 4:19 AM > To: Matthew Donovan > Cc: Daniel P. Berrange; libvir-list(a)redhat.com > Subject: Re: [libvirt] Using Xen config files > > On Thu, Aug 21, 2008 at 02:16:55PM -0400, Matthew Donovan wrote: > > I'm still having problems with this. I've dug around and > found errors in > > the qemu-dm log. > > > > When I try to start the VM with libvirt, the error I'm getting is: > > > "xs_read(/vm/414e73de-cf1e-487c-87e0-d4ebf7a23576/rtc/timeoffs > et): read > > error" > > > > I did a xenstore-ls on the /vm/414e73de-cf1e-487c-87e0-d4ebf7a23576 > > directory and sure enough, rtc/timeoffset is not there. > When I start the VM > > with the Xen config file I used to generate the XML the > rtc/timeoffset is > > there (timeoffset is set to "0"). > > Which version of xen, xen-devel, etc? > > Rich. > > -- > Richard Jones, Emerging Technologies, Red Hat > http://et.redhat.com/~rjones > virt-df lists disk usage of guests without needing to install any > software inside the virtual machine. Supports Linux and Windows. > http://et.redhat.com/~rjones/virt-df/ >

1 0

[libvirt] PATCH: Improve python exception messages
by Daniel P. Berrange 22 Aug '08

22 Aug '08

Most of the libvirt python API bindings use code snippet like this when raising an exception: if ret is None:raise libvirtError('virConnectOpen() failed') THis sets the message associated with the exception to "virConnectOpen() failed" This contains essentially zero useful information - you can see that it was virConnectOpen which failed from the stack trace. Now the libvirt error object has a real message, such as "authentication failed" Or "unable to connect to '/var/run/libvirt/libvirt-sock': Connection refused" This patch makes sure we extract this real error message and use it to set the message associated with the exception object. This is one step in getting better error reporting for virt-install/virt-manager, which is particularly needed for remote connections Daniel diff -u -r1.9 libvir.py --- python/libvir.py 11 Jun 2008 07:49:01 -0000 1.9 +++ python/libvir.py 18 Aug 2008 12:07:03 -0000 @@ -13,10 +13,22 @@ import types +def _getErrorMessage(conn, defmsg): + err = None + if conn is None: + err = virGetLastError() + else: + err = conn.virConnGetLastError() + if err is None: + return defmsg + else: + return err[2] + + # The root of all libvirt errors. class libvirtError(Exception): def __init__(self, msg, conn=None, dom=None, net=None, pool=None, vol=None): - Exception.__init__(self, msg) + Exception.__init__(self, _getErrorMessage(conn, msg)) if dom is not None: conn = dom._conn @@ -77,12 +89,6 @@ return None return self.err[8] - def __str__(self): - if self.get_error_message() is None: - return Exception.__str__(self) - else: - return Exception.__str__(self) + " " + self.get_error_message() - # # register the libvirt global error handler # -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

3 5

[libvirt] pthread_sigmask undefined reference error
by Jun Koi 22 Aug '08

22 Aug '08

Hi, The latest cvs version has an error when compiling: make[3]: Entering directory `/home/jun/projects/libvirt-0821/src' /bin/bash ../libtool --tag=CC --mode=link gcc -g -O2 -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -o virsh virsh-console.o virsh-util-lib.o virsh-virsh.o -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables libvirt.la ../gnulib/lib/libgnu.la gcc -g -O2 -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -o .libs/virsh virsh-console.o virsh-util-lib.o virsh-virsh.o -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables ./.libs/libvirt.so ../gnulib/lib/.libs/libgnu.a ./.libs/libvirt.so: undefined reference to `pthread_sigmask' collect2: ld returned 1 exit status make[3]: *** [virsh] Error 1 make[3]: Leaving directory `/home/jun/projects/libvirt-0821/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/jun/projects/libvirt-0821/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/jun/projects/libvirt-0821' make: *** [all] Error 2 It seems I lack a particular library?? Thanks, Jun

3 4

[libvirt] [PATCH] autobuild.sh: Fix minor shell-quoting bugs.
by Jim Meyering 22 Aug '08

22 Aug '08

I noticed some minor quoting problems in ovirt's autobuild.sh, and since part of that code came from here, ... Here's a patch: >From 50c37706729b7748dbf92290c6ecf6bc3982f681 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 21 Aug 2008 17:55:19 +0200 Subject: [PATCH] autobuild.sh: Fix minor shell-quoting bugs. * autobuild.sh: Remove unnecessary quotes. Don't choke on a file name argument containing a space. Don't misbehave for $AUTOBUILD_INSTALL_ROOT containing a shell meta-character. --- autobuild.sh | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/autobuild.sh b/autobuild.sh index ce12692..7ae5d1e 100755 --- a/autobuild.sh +++ b/autobuild.sh @@ -5,7 +5,7 @@ set -v # Make things clean. -test -n "$1" && RESULTS="$1" || RESULTS="results.log" +test -n "$1" && RESULTS=$1 || RESULTS=results.log test -f Makefile && make -k distclean || : rm -rf coverage @@ -14,7 +14,7 @@ rm -rf coverage #mkdir build #cd build -./autogen.sh --prefix=$AUTOBUILD_INSTALL_ROOT \ +./autogen.sh --prefix="$AUTOBUILD_INSTALL_ROOT" \ --enable-test-coverage \ --enable-compile-warnings=error \ --with-openvz \ @@ -25,8 +25,8 @@ make make install set -o pipefail -make check 2>&1 | tee $RESULTS -make syntax-check 2>&1 | tee -a $RESULTS +make check 2>&1 | tee "$RESULTS" +make syntax-check 2>&1 | tee -a "$RESULTS" test -x /usr/bin/lcov && make cov rm -f *.tar.gz -- 1.6.0.90.g436ed

2 1