March 2008 - Devel - libvirt List Archives

[Libvir] Re: libvirt on mingw
by Richard W.M. Jones 01 Jul '08

01 Jul '08

Brecht Sanders wrote: > Hi, > I saw on the following link: > http://www.mail-archive.com/libvir-list@redhat.com/msg04103.html > that you are also trying to compile libvirt on win32. > I'm also attempting to do this, and I guess I got stuck at the same > point your post was about. > Have you in the mean time found an XDR implementation that compiles on > MinGW and that implements xdr_u_quad_t? > If you did, can you please tell me where to find it? You'll find the answer to this question and more if you look through the libvir-list archives for the current month: https://www.redhat.com/archives/libvir-list/2008-January/thread.html Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] [PATCH] Fix USB device name mis-conversion from S-Expr to XML
by Hiroyuki Kaguchi 22 Jun '08

22 Jun '08

"tablet" and "mouse" are set as a value of the /local/domain/<domid>/image/hvm/usbdevice, but libvirt expects "usbdevice" and "usbmouse" as a value. This causes the following. If a USB device is attached by virt-manager, the USB device is not seen from virt-manager. This patch fixes expected value of libvirt Thanks, Hiroyuki Kaguchi Index: xend_internal.c =================================================================== RCS file: /data/cvs/libvirt/src/xend_internal.c,v retrieving revision 1.162 diff -u -r1.162 xend_internal.c --- xend_internal.c 21 Jan 2008 16:29:10 -0000 1.162 +++ xend_internal.c 23 Jan 2008 00:37:02 -0000 @@ -1743,11 +1743,9 @@ node = cur->u.s.car; if (sexpr_lookup(node, "usbdevice")) { tmp = sexpr_node(node, "usbdevice"); - if (tmp && *tmp) { - if (!strcmp(tmp, "usbtablet")) - virBufferAdd(&buf, " <input type='tablet' bus='usb'/>\n", 37); - else if (!strcmp(tmp, "usbmouse")) - virBufferAdd(&buf, " <input type='mouse' bus='usb'/>\n", 36); + if (!strcmp(tmp, "tablet") || + !strcmp(tmp, "mouse")) { + virBufferVSprintf(&buf, " <input type='%s' bus='usb'/>\n", tmp); } } }

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[Libvir] [PATCH] Add xen and hvm guest types to test drive caps
by Cole Robinson 08 Apr '08

08 Apr '08

The attached patch adds xen and hvm guest types to the test driver's capabilities. It was currently set to offer only a 'linux' type which doesn't seem to follow the conventions of the other drivers, so I removed that. Please yell if I'm wrong :) Thanks, Cole diff --git a/src/test.c b/src/test.c index f401d7d..9b2ca56 100644 --- a/src/test.c +++ b/src/test.c @@ -984,6 +984,8 @@ static char *testGetCapabilities (virConnectPtr conn) char *xml; int cell1[] = { 0, 2, 4, 6, 8, 10, 12, 14 }; int cell2[] = { 1, 3, 5, 7, 9, 11, 13, 15 }; + const char *guest_types[] = { "hvm", "xen" }; + int num_guest_types = 2, i; if ((caps = virCapabilitiesNew(TEST_MODEL, 0, 0)) == NULL) goto no_memory; @@ -998,29 +1000,33 @@ static char *testGetCapabilities (virConnectPtr conn) if (virCapabilitiesAddHostNUMACell(caps, 1, 8, cell2) < 0) goto no_memory; - if ((guest = virCapabilitiesAddGuest(caps, - "linux", - TEST_MODEL, - TEST_MODEL_WORDSIZE, - NULL, - NULL, - 0, - NULL)) == NULL) - goto no_memory; - - if (virCapabilitiesAddGuestDomain(guest, - "test", - NULL, - NULL, - 0, - NULL) == NULL) - goto no_memory; - - - if (virCapabilitiesAddGuestFeature(guest, "pae", 1, 1) == NULL) - goto no_memory; - if (virCapabilitiesAddGuestFeature(guest ,"nonpae", 1, 1) == NULL) - goto no_memory; + for (i = 0; i < num_guest_types; ++i) { + + if ((guest = virCapabilitiesAddGuest(caps, + guest_types[i], + TEST_MODEL, + TEST_MODEL_WORDSIZE, + NULL, + NULL, + 0, + NULL)) == NULL) + goto no_memory; + + if (virCapabilitiesAddGuestDomain(guest, + "test", + NULL, + NULL, + 0, + NULL) == NULL) + goto no_memory; + + if (strcmp(guest_types[i], "xen")) { + if (virCapabilitiesAddGuestFeature(guest, "pae", 1, 1) == NULL) + goto no_memory; + if (virCapabilitiesAddGuestFeature(guest ,"nonpae", 1, 1) == NULL) + goto no_memory; + } + } if ((xml = virCapabilitiesFormatXML(caps)) == NULL) goto no_memory;

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[Libvir] uuid of newly created domain
by Vadim Zaliva 02 Apr '08

02 Apr '08

Hi! I am running into interesting problem with UUID. I am using Ruby bindings, but I think the problem is not specific to Ruby. I am doing roughly the following: dom = c.define_domain_xml(xml) dom1 = c.ookup_domain_by_uuid(dom.uuid) and I got an error that domain with given UUID is not found. If I print UUID of newly defined domain and compare it with output of 'dominfo' command in virsh I can see that it differs. Could anybody shed some light on why UUID returned by define_domain_xml() is invalid? Sincerely, Vadim -- "La perfection est atteinte non quand il ne reste rien a ajouter, mais quand il ne reste rien a enlever." (Antoine de Saint-Exupery)

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[Libvir] use C99 initializer for lastErr
by Guido Günther 02 Apr '08

02 Apr '08

...this makes things just a bit more readable. -- Guido

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[Libvir] Lxc driver patch
by Daniel Veillard 01 Apr '08

01 Apr '08

Patch against CVS version, it tries to avoid 2 issues: - problem with global data settings when loading of the driver got interrupted. Check more NULLs and reset to NULL, i was getting crashes when running the regression tests and the /etc/libvirtd/lxc was not accessible. - avoid trying to open the driver if not running as root, that's not a problem in normal case because the daemon runs as root, but when running 'make check' as a normal user libvirtd is run as an user and compiling the lxc driver in would break the regression tests Dave could you double-check this, hopefully it has no side effect ? Daniel -- Red Hat Virtualization group http://redhat.com/virtualization/ Daniel Veillard | virtualization library http://libvirt.org/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/

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[Libvir] [PATCH] lxc: start domain
by Dave Leskovec 31 Mar '08

31 Mar '08

This is a repost of patch four in the last series I posted. It contains the start container support. I've made some changes corresponding to Dan B's patch moving the lxc driver under libvirtd. I removed the isolation forks and cleaned up the status handling and PID storing. Thanks! -- Best Regards, Dave Leskovec IBM Linux Technology Center Open Virtualization

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Re: [Libvir] [PATCH] deep copy dom structure
by Richard W.M. Jones 31 Mar '08

31 Mar '08

On Fri, Mar 28, 2008 at 04:39:31PM +0100, Guido Guenther wrote: > --- > src/virterror.c | 14 ++++++++++++++ > 1 files changed, 14 insertions(+), 0 deletions(-) > > diff --git a/src/virterror.c b/src/virterror.c > index 1463129..49f3b89 100644 > --- a/src/virterror.c > +++ b/src/virterror.c > @@ -115,6 +115,11 @@ virResetError(virErrorPtr err) > free(err->str1); > free(err->str2); > free(err->str3); > + if(err->dom) { > + if(err->dom->name) > + free(err->dom->name); > + free(err->dom); > + } > memset(err, 0, sizeof(virError)); > } > > @@ -383,6 +388,15 @@ __virRaiseError(virConnectPtr conn, virDomainPtr dom, virNetworkPtr net, > virResetError(to); > to->conn = conn; > to->dom = dom; > + if (dom) { > + if (!(to->dom = malloc(sizeof(virDomain)))) { > + fprintf(stderr, "cannot allocate memory in %s", __FUNCTION__); > + } else { > + to->dom->name = strdup(dom->name); > + memcpy (to->dom->uuid, dom->uuid, VIR_UUID_BUFLEN); > + to->dom->id = dom->id; > + } > + } > to->net = net; > to->domain = domain; > to->code = code; What problem are you trying to solve? The 'conn', 'dom' and 'net' fields in a virterror can't be accessed safely, particularly from a garbage-collected language. The only safe thing one could do with them is a physical equality test on the pointer against an existing conn/dom/net pointer. But the solution isn't to copy the dom object, since in a GC-d language someone could grab a handle to the copied dom which would have a different lifetime from the error object. If anything the solution would be to remove those fields from the error object since they are highly unlikely to be useful in any real world application. We can't do this because of backwards compatibility promises but we should instead deprecate them. 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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[Libvir] ruby binding patch
by Vadim Zaliva 31 Mar '08

31 Mar '08

I have attempted to add following methods to Domain class: 1. vcpus= 2. memory= This is my first patch to libvirt-ruby, and I will appreciate your feedback. My next goal is to add binding for virDomainPinVcpu() method. Sincerely, Vadim

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[Libvir] [PATCH/RFC] remote driver uses already freed dom
by Guido Günther 31 Mar '08

31 Mar '08

Hi, when trying to undefine a running qemu domain the domain name gets corrupted: $ ./virsh undefine system1 Name: /�em1 libvir: QEMU error /�em1: internal error cannot delete active domain error: Failed to undefine domain system1 the reaseon is that in qemud/remote.c the domain is freed after failure: remoteDispatchDomainUndefine (struct qemud_server *server ATTRIBUTE_UNUSED, ... { ... if (virDomainUndefine (dom) == -1) { virDomainFree(dom); return -1; } ... } This doesn't work out since remoteDispatchClient accesses the dom structure that was stored in the virtErrorPtr structure to report the error back to the client (This is just an example and hits any error path of functions in remote_dispatch_proc_switch.h that reference dom). There are two possible solutions I see: move the virtDomainFree down to the bottom of remoteDispatchClient or deep copy the dom structure in virDefaultErrorFunc. A patch for the later is attached since similar things seem to be possible in other drivers too. -- Guido

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