- Devel - libvirt List Archives

[Libvir] IP address and MAC info in XMLDesc
by Diwaker Gupta 28 Feb '06

28 Feb '06

Are there plans to include IP address and MAC info in XMLDesc? I'm interested because I would like to move to libvirt for VM management, but currently my scripts use a lot of options in 'xm create' that are not yet supported by libvirt. Diwaker -- Web/Blog/Gallery: http://floatingsun.net/blog

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[Libvir] Report UUID in XMLDesc
by Diwaker Gupta 27 Feb '06

27 Feb '06

Since we have a lookupByUUID() method, I thought it would be nice to report UUID in XMLDesc as well. It could be ignored while creating a VM, just like the 'id' attribute is currently ignored. What do people think about this? Diwaker -- Web/Blog/Gallery: http://floatingsun.net/blog

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[Libvir] xmldump doesn't work
by Diwaker Gupta 25 Feb '06

25 Feb '06

Hi, I'm running libvirt from CVS. I'm unable to get xmldump to work: o virsh dumpxml <domain-id> doesn't work. Neither does <domain-name> instead of domain-id. (Aside: the documentation at http://libvirt.org/format.html needs fixing -- virsh reports a dumpxml command, but no xmldump command) o I can't get an XML dump from the Python bindings either. Looking at the code, it seems the XML description is built using the sexpr output from xend. On my machine, "xm list -l <domain-id>" prints out the correct sexpr, so it seems Xend is working fine. Am I missing something? Thanks, Diwaker -- Web/Blog/Gallery: http://floatingsun.net/blog

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[Libvir] devhelp missing
by Diwaker Gupta 24 Feb '06

24 Feb '06

After the latest pull tonight, I'm getting errors regarding a missing docs/devhelp/Makefile. Just FYI Diwaker PS: since the website has moved to libvirt.org, and the library is being called libvirt, perhaps its a better idea to rename the mailing list as well to libvirt-list? -- Web/Blog/Gallery: http://floatingsun.net/blog

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[Libvir] Release of libvirt-0.0.5
by Daniel Veillard 24 Feb '06

24 Feb '06

This one has more substance: - adds an implementation of the virDomainCreateLinux() based on an XML description - adds 2 APIs to lookup by UUID and retrieving the UUID of a domain - augments the Python bindings accordingly - also add docs and examples - adds some regression test and a few bug fixes Availble from ftp://libvirt.org/ and hopefully soon in Fedora Core 5. Daniel -- Daniel Veillard | Red Hat http://redhat.com/ 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] libver-python fix & test script
by Angus Thomas 11 Feb '06

11 Feb '06

Against the current CVS version, the python method libvir.open() is failing because it requires "name" as a parameter, but in src/libvir.c, virConnectOpen returns NULL if name is set. Very simple patch attached. Also attached is a simple script to test reporting of domain state via the python bindings. Hopefully useful as a test of the python bindings/simple example of how to use them. It generates output like this: [root@chaka ~]# ./libver-python-test Attached to a hypervisor of type - Xen There are currently 2 domains running Domain ID 0 is named Domain-0 State is Running maxMem is -4 memory is 262224 nrVirtCpu is 1 cpuTime is 2294771524162 Domain ID 2 is named guest1 State is Blocked maxMem is 131072 memory is 131052 nrVirtCpu is 1 cpuTime is 34682760385 --- libvir-pristine/src/libvir.c 2006-01-27 08:59:42.000000000 +0000 +++ libvir-0.0.2/src/libvir.c 2006-02-07 12:59:17.000000000 +0000 @@ -89,8 +89,8 @@ struct xs_handle *xshandle = NULL; /* we can only talk to the local Xen supervisor ATM */ - if (name != NULL) - return(NULL); +/* if (name != NULL) + return(NULL); */ handle = xenHypervisorOpen(); if (handle == -1) #!/usr/bin/env python # # Simple script to test libver-python reporting # # Copyright 2005-2006 Red Hat, Inc. # Angus Thomas <athomas(a)redhat.com> # # This software may be freely redistributed under the terms of the GNU # general public license. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. domain_states="No State", "Running", "Blocked", "Paused", "Shutdown", "Shutoff", "Crashed" import libvir virt=libvir.open("Xen"); print ("Attached to a hypervisor of type - %s" % (virt.getType())); print ("There are currently %s domains running" % (virt.numOfDomains())); id_list=virt.listDomainsID(); for dom_id in id_list: dom=virt.lookupByID(dom_id); print ("\nDomain ID %s is named %s" % (dom_id, dom.name())); dom_info=dom.info(); # print ("\tState is %s" % (dom_info[0])); print ("\tState is %s" % (domain_states[dom_info[0]])); print ("\tmaxMem is %s" % (dom_info[1])); print ("\tmemory is %s" % (dom_info[2])); print ("\tnrVirtCpu is %s" % (dom_info[3])); print ("\tcpuTime is %s" % (dom_info[4]));

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[Libvir] Release of libvirt-0.0.4
by Daniel Veillard 11 Feb '06

11 Feb '06

Change of name, it's now libvirt due to negative feedback on the shorter name, but I don't intend to change the mailing-list name at this point. There was an intermediary libvirt-0.0.3 release but it was too broken I needed to rerelease. Except the change of names, it mostly consists of a couple of bug fixes and completion of the python bindings. Available at ftp://libvirt.org/libvirt/ The CVS checkouts should still be working, the update is just a bit intrusive, and I fixed the hourly snapshot from CVS generation which broke in december. Sorry for the mess ! Daniel -- Daniel Veillard | Red Hat http://redhat.com/ 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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Re: [Libvir] Errors while running make
by dasari dakshina 02 Feb '06

02 Feb '06

Hello, I have tried writing a simple program. I have compiled it with cc xmlist.c -L /usr/src/redhat/BUILD/libvir-0.0.1/src/.libs -lvir -o xmlist But am getting an error on trying after the virConnectOpen call . Any help would be appreciated . Rgds, Dakshina Here is the code :xmlist.c #include <stdio.h> #include <libvir.h> main(){ virConnectPtr conn; int *domids ; int maxids = 20; int numDoms=-1; conn=virConnectOpen(""); if(conn == NULL){ printf("Error : Could not open a connection \n"); return(-1); } numDoms=virConnectListDomains(conn,domids,maxids); printf("The number of domains %d\n",numDoms); printf("The number of domains %d\n", virConnectNumOfDomains(conn)); } cc xmlist.c -L /usr/src/redhat/BUILD/libvir-0.0.1/src/.libs -lvir -o xmlist Daniel Veillard <veillard(a)redhat.com> wrote: On Tue, Jan 24, 2006 at 08:46:07PM -0800, dasari dakshina wrote: > Hello Daniel, > Thanks so much for the info .I downloaded the Xen > 3 source and was able to compile without any issues. > Is there any link where I can look at simple examples > of the API usage ? not yet, check http://libvir.org/html/libvir-libvir.html Please keep discussion on the list, thanks, Daniel -- Daniel Veillard | Red Hat http://redhat.com/ veillard(a)redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/ --------------------------------- What are the most popular cars? Find out at Yahoo! Autos

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[Libvir] Release of libvir 0.0.2
by Daniel Veillard 29 Jan '06

29 Jan '06

A new release is availble on libvir.org: The main change is the mode of operation for most function, now going though Xend HTTP remote procedure calls instead of hypervisor and xenstore operations. * Update of the documentation, web site redesign (Diana Fong) * integration of HTTP xend RPC based on libxend by Anthony Liquori * Adding Save and Restore APIs * extended the virsh command line tool (Karel Zak) * remove xenstore transactions (Anthony Liguori) * fix the Python bindings bug when domain and connections where freed Enjoy ! Daniel -- Daniel Veillard | Red Hat http://redhat.com/ 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] Remove XenStore transactions
by Anthony Liguori 27 Jan '06

27 Jan '06

XenStore transactions aren't actually needed for our current uses of XenStore. Moreover, the type of transactions changed recently from an opaque pointer to an integer type. This breaks the build for newer changesets. The change also introduced an XBT_NULL type but instead of using that (which would break older builds), we can just pass 0. Regards, Anthony Liguori # HG changeset patch # User Anthony Liguori <anthony(a)codemonkey.ws> # Node ID 9fe0c1f3379e06054ff66a572daad59bbfac3292 # Parent c028398d53b98baf08eb97192d599fbd311e3dd1 Remove transactions as the type has changed recently breaking the build and more importantly they aren't actually needed here. diff -r c028398d53b9 -r 9fe0c1f3379e src/libvir.c --- a/src/libvir.c Thu Jan 26 18:11:32 2006 +0000 +++ b/src/libvir.c Thu Jan 26 17:27:36 2006 -0500 @@ -307,7 +307,6 @@ */ int virConnectListDomains(virConnectPtr conn, int *ids, int maxids) { - struct xs_transaction_handle* t = NULL; int ret = -1; unsigned int num, i; long id; @@ -330,11 +329,7 @@ goto done; } if (conn->xshandle != NULL) { - t = xs_transaction_start(conn->xshandle); - if (t == NULL) - goto done; - - idlist = xs_directory(conn->xshandle, t, "/local/domain", &num); + idlist = xs_directory(conn->xshandle, 0, "/local/domain", &num); if (idlist == NULL) goto done; @@ -351,8 +346,6 @@ } done: - if ((t != NULL) && (conn->xshandle != NULL)) - xs_transaction_end(conn->xshandle, t, 0); if (idlist != NULL) free(idlist); @@ -369,7 +362,6 @@ */ int virConnectNumOfDomains(virConnectPtr conn) { - struct xs_transaction_handle* t; int ret = -1; unsigned int num; char **idlist = NULL; @@ -391,14 +383,10 @@ } } else if (conn->xshandle != NULL) { - t = xs_transaction_start(conn->xshandle); - if (t) { - idlist = xs_directory(conn->xshandle, t, "/local/domain", &num); - if (idlist) { - free(idlist); - ret = num; - } - xs_transaction_end(conn->xshandle, t, 0); + idlist = xs_directory(conn->xshandle, 0, "/local/domain", &num); + if (idlist) { + free(idlist); + ret = num; } } return(ret); @@ -445,23 +433,11 @@ */ static char ** virConnectDoStoreList(virConnectPtr conn, const char *path, unsigned int *nb) { - struct xs_transaction_handle* t; - char **ret = NULL; - if ((conn == NULL) || (conn->xshandle == NULL) || (path == NULL) || (nb == NULL)) return(NULL); - t = xs_transaction_start(conn->xshandle); - if (t == NULL) - goto done; - - ret = xs_directory(conn->xshandle, t, path, nb); - -done: - if (t != NULL) - xs_transaction_end(conn->xshandle, t, 0); - return(ret); + return xs_directory(conn->xshandle, 0, path, nb); } /** @@ -475,9 +451,7 @@ */ static char * virDomainDoStoreQuery(virDomainPtr domain, const char *path) { - struct xs_transaction_handle* t; char s[256]; - char *ret = NULL; unsigned int len = 0; if (!VIR_IS_CONNECTED_DOMAIN(domain)) @@ -488,16 +462,7 @@ snprintf(s, 255, "/local/domain/%d/%s", domain->handle, path); s[255] = 0; - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - goto done; - - ret = xs_read(domain->conn->xshandle, t, &s[0], &len); - -done: - if (t != NULL) - xs_transaction_end(domain->conn->xshandle, t, 0); - return(ret); + return xs_read(domain->conn->xshandle, 0, &s[0], &len); } @@ -514,7 +479,6 @@ static int virDomainDoStoreWrite(virDomainPtr domain, const char *path, const char *value) { - struct xs_transaction_handle* t; char s[256]; int ret = -1; @@ -529,16 +493,9 @@ snprintf(s, 255, "/local/domain/%d/%s", domain->handle, path); s[255] = 0; - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - goto done; - - if (xs_write(domain->conn->xshandle, t, &s[0], value, strlen(value))) + if (xs_write(domain->conn->xshandle, 0, &s[0], value, strlen(value))) ret = 0; -done: - if (t != NULL) - xs_transaction_end(domain->conn->xshandle, t, 0); return(ret); } @@ -553,7 +510,6 @@ char * virDomainGetVM(virDomainPtr domain) { - struct xs_transaction_handle* t; char *vm; char query[200]; unsigned int len; @@ -563,18 +519,11 @@ if (domain->conn->xshandle == NULL) return(NULL); - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - return(NULL); - snprintf(query, 199, "/local/domain/%d/vm", virDomainGetID(domain)); query[199] = 0; - vm = xs_read(domain->conn->xshandle, t, &query[0], &len); - - if (t != NULL) - xs_transaction_end(domain->conn->xshandle, t, 0); + vm = xs_read(domain->conn->xshandle, 0, &query[0], &len); return(vm); } @@ -593,7 +542,6 @@ char * virDomainGetVMInfo(virDomainPtr domain, const char *vm, const char *name) { - struct xs_transaction_handle* t; char s[256]; char *ret = NULL; unsigned int len = 0; @@ -606,15 +554,8 @@ snprintf(s, 255, "%s/%s", vm, name); s[255] = 0; - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - goto done; - - ret = xs_read(domain->conn->xshandle, t, &s[0], &len); - -done: - if (t != NULL) - xs_transaction_end(domain->conn->xshandle, t, 0); + ret = xs_read(domain->conn->xshandle, 0, &s[0], &len); + return(ret); } @@ -696,7 +637,6 @@ */ virDomainPtr virDomainLookupByName(virConnectPtr conn, const char *name) { - struct xs_transaction_handle* t = NULL; virDomainPtr ret = NULL; unsigned int num, i, len; long id = -1; @@ -722,11 +662,7 @@ /* then though the XenStore */ if (conn->xshandle != NULL) { - t = xs_transaction_start(conn->xshandle); - if (t == NULL) - goto done; - - idlist = xs_directory(conn->xshandle, t, "/local/domain", &num); + idlist = xs_directory(conn->xshandle, 0, "/local/domain", &num); if (idlist == NULL) goto done; @@ -739,7 +675,7 @@ continue; snprintf(prop, 199, "/local/domain/%s/name", idlist[i]); prop[199] = 0; - tmp = xs_read(conn->xshandle, t, prop, &len); + tmp = xs_read(conn->xshandle, 0, prop, &len); if (tmp != NULL) { found = !strcmp(name, tmp); free(tmp); @@ -768,8 +704,6 @@ done: if (xenddomain != NULL) free(xenddomain); - if (t != NULL) - xs_transaction_end(conn->xshandle, t, 0); if (idlist != NULL) free(idlist); @@ -1121,7 +1055,6 @@ virDomainSetMaxMemory(virDomainPtr domain, unsigned long memory) { int ret; char s[256], v[30]; - struct xs_transaction_handle* t; if (!VIR_IS_CONNECTED_DOMAIN(domain)) return(-1); @@ -1146,12 +1079,8 @@ snprintf(v, 29, "%lu", memory); v[30] = 0; - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - return(0); - - xs_write(domain->conn->xshandle, t, &s[0], &v[0], strlen(v)); - xs_transaction_end(domain->conn->xshandle, t, 0); + if (!xs_write(domain->conn->xshandle, 0, &s[0], &v[0], strlen(v))) + ret = -1; return(ret); } diff -r c028398d53b9 -r 9fe0c1f3379e src/xml.c --- a/src/xml.c Thu Jan 26 18:11:32 2006 +0000 +++ b/src/xml.c Thu Jan 26 17:27:36 2006 -0500 @@ -146,25 +146,14 @@ static char * virDomainGetXMLDeviceInfo(virDomainPtr domain, const char *sub, long dev, const char *name) { - struct xs_transaction_handle* t; char s[256]; - char *ret = NULL; unsigned int len = 0; snprintf(s, 255, "/local/domain/0/backend/%s/%d/%ld/%s", sub, domain->handle, dev, name); s[255] = 0; - t = xs_transaction_start(domain->conn->xshandle); - if (t == NULL) - goto done; - - ret = xs_read(domain->conn->xshandle, t, &s[0], &len); - -done: - if (t != NULL) - xs_transaction_end(domain->conn->xshandle, t, 0); - return(ret); + return xs_read(domain->conn->xshandle, 0, &s[0], &len); } /** @@ -240,7 +229,6 @@ */ static int virDomainGetXMLDevices(virDomainPtr domain, virBufferPtr buf) { - struct xs_transaction_handle* t; int ret = -1; unsigned int num, i; long id; @@ -253,14 +241,10 @@ conn = domain->conn; - t = xs_transaction_start(conn->xshandle); - if (t == NULL) - goto done; - snprintf(backend, 199, "/local/domain/0/backend/vbd/%d", virDomainGetID(domain)); backend[199] = 0; - list = xs_directory(conn->xshandle, t, backend, &num); + list = xs_directory(conn->xshandle, 0, backend, &num); ret = 0; if (list == NULL) goto done; @@ -275,8 +259,6 @@ } done: - if (t != NULL) - xs_transaction_end(conn->xshandle, t, 0); if (list != NULL) free(list); @@ -343,7 +325,6 @@ */ static int virDomainGetXMLInterfaces(virDomainPtr domain, virBufferPtr buf) { - struct xs_transaction_handle* t; int ret = -1; unsigned int num, i; long id; @@ -356,14 +337,10 @@ conn = domain->conn; - t = xs_transaction_start(conn->xshandle); - if (t == NULL) - goto done; - snprintf(backend, 199, "/local/domain/0/backend/vif/%d", virDomainGetID(domain)); backend[199] = 0; - list = xs_directory(conn->xshandle, t, backend, &num); + list = xs_directory(conn->xshandle, 0, backend, &num); ret = 0; if (list == NULL) goto done; @@ -378,8 +355,6 @@ } done: - if (t != NULL) - xs_transaction_end(conn->xshandle, t, 0); if (list != NULL) free(list);

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