From b21795bb5bf3759ddcc13b99ef6c75f3047e7391 Mon Sep 17 00:00:00 2001 From: Sahid Orentino Ferdjaoui Date: Fri, 11 Apr 2014 18:44:32 +0000 Subject: [PATCH] Add a new example to illustrate domain migration This commit adds a new example to illustrate peer to peer domain migration with virDomainMigrateToURI. Signed-off-by: Sahid Orentino Ferdjaoui --- .gitignore | 1 + Makefile.am | 2 +- configure.ac | 1 + examples/dommigrate/Makefile.am | 5 ++ examples/dommigrate/dommigrate.c | 89 ++++++++++++++++++++++++++++++++ libvirt.spec.in | 3 +- 6 files changed, 99 insertions(+), 2 deletions(-) create mode 100644 examples/dommigrate/Makefile.am create mode 100644 examples/dommigrate/dommigrate.c diff --git a/.gitignore b/.gitignore index 0513a339a3..8c3b87038a 100644 --- a/.gitignore +++ b/.gitignore @@ -74,6 +74,7 @@ /examples/object-events/event-test /examples/dominfo/info1 /examples/domsuspend/suspend +/examples/dommigrate/dommigrate /examples/hellolibvirt/hellolibvirt /examples/openauth/openauth /gnulib/lib/* diff --git a/Makefile.am b/Makefile.am index 9847ff0665..b961c0eee6 100644 --- a/Makefile.am +++ b/Makefile.am @@ -23,7 +23,7 @@ SUBDIRS = . gnulib/lib include src daemon tools docs gnulib/tests \ tests po examples/object-events examples/hellolibvirt \ examples/dominfo examples/domsuspend examples/apparmor \ examples/xml/nwfilter examples/openauth examples/systemtap \ - tools/wireshark + tools/wireshark examples/dommigrate ACLOCAL_AMFLAGS = -I m4 diff --git a/configure.ac b/configure.ac index 3371b46cb4..12338d4d63 100644 --- a/configure.ac +++ b/configure.ac @@ -2730,6 +2730,7 @@ AC_CONFIG_FILES([\ examples/object-events/Makefile \ examples/domsuspend/Makefile \ examples/dominfo/Makefile \ + examples/dommigrate/Makefile \ examples/openauth/Makefile \ examples/hellolibvirt/Makefile \ examples/systemtap/Makefile \ diff --git a/examples/dommigrate/Makefile.am b/examples/dommigrate/Makefile.am new file mode 100644 index 0000000000..db271bbe36 --- /dev/null +++ b/examples/dommigrate/Makefile.am @@ -0,0 +1,5 @@ +INCLUDES = -I$(top_builddir)/include -I$(top_srcdir)/include -I$(top_srcdir) +noinst_PROGRAMS = dommigrate +dommigrate_CFLAGS = $(WARN_CFLAGS) +dommigrate_SOURCES = dommigrate.c +dommigrate_LDADD = $(top_builddir)/src/libvirt.la diff --git a/examples/dommigrate/dommigrate.c b/examples/dommigrate/dommigrate.c new file mode 100644 index 0000000000..3fd078d55d --- /dev/null +++ b/examples/dommigrate/dommigrate.c @@ -0,0 +1,89 @@ +/* + * dommigrate.c: This file is largely inspired from hellolibvirt and + * contains a trivial example that illustrate p2p domain + * migration with libvirt. + * + * Copyright (C) 2014 Cloudwatt + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * . + * + * Sahid Orentino Ferdjaoui + */ + +#include +#include +#include +#include + + +static int +usage(char *prgn, int ret) +{ + printf("Usage: %s \n", prgn); + return ret; +} + +int +main(int argc, char *argv[]) +{ + char *src_uri, *dst_uri, *domname; + int ret = 0; + virConnectPtr conn = NULL; + virDomainPtr dom = NULL; + + if (argc < 4) { + ret = usage(argv[0], 1); + goto out; + } + + src_uri = argv[1]; + dst_uri = argv[2]; + domname = argv[3]; + + printf("Attempting to connect to the source hypervisor...\n"); + conn = virConnectOpenAuth(src_uri, virConnectAuthPtrDefault, 0); + if (!conn) { + ret = 1; + fprintf(stderr, "No connection to the source hypervisor: %s.\n", + virGetLastErrorMessage()); + goto out; + } + + printf("Attempting to retrieve domain %s...\n", domname); + dom = virDomainLookupByName(conn, domname); + if (!dom) { + fprintf(stderr, "Failed to find domain %s.\n", domname); + goto cleanup; + } + + printf("Attempting to migrate %s to %s...\n", domname, dst_uri); + if ((ret = virDomainMigrateToURI(dom, dst_uri, + VIR_MIGRATE_PEER2PEER, + NULL, 0)) != 0) { + fprintf(stderr, "Failed to migrate domain %s.\n", domname); + goto cleanup; + } + + printf("Migration finished with success.\n"); + + cleanup: + if (dom != NULL) + virDomainFree(dom); + if (conn != NULL) + virConnectClose(conn); + + out: + return ret; +} diff --git a/libvirt.spec.in b/libvirt.spec.in index 520561da67..c597d157ff 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -1498,7 +1498,7 @@ rm -fr %{buildroot} # on RHEL 5, thus we need to expand it here. make install DESTDIR=%{?buildroot} SYSTEMD_UNIT_DIR=%{_unitdir} -for i in object-events dominfo domsuspend hellolibvirt openauth xml/nwfilter systemtap +for i in object-events dominfo domsuspend hellolibvirt openauth xml/nwfilter systemtap dommigrate do (cd examples/$i ; make clean ; rm -rf .deps .libs Makefile Makefile.in) done @@ -2222,6 +2222,7 @@ exit 0 %doc examples/object-events %doc examples/dominfo %doc examples/domsuspend +%doc examples/dommigrate %doc examples/openauth %doc examples/xml %doc examples/systemtap