libvirt/examples/c/domain/dommigrate.c

84 lines
2.4 KiB
C
Raw Normal View History

/*
* 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
* <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
static void
usage(char *prgn)
{
printf("Usage: %s <src uri> <dst uri> <domain name>\n", prgn);
}
int
main(int argc, char *argv[])
{
char *src_uri, *dst_uri, *domname;
int ret = EXIT_FAILURE;
virConnectPtr conn = NULL;
virDomainPtr dom = NULL;
if (argc < 4) {
usage(argv[0]);
return EXIT_FAILURE;
}
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) {
fprintf(stderr, "No connection to the source hypervisor: %s.\n",
virGetLastErrorMessage());
return EXIT_FAILURE;
}
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");
ret = EXIT_SUCCESS;
cleanup:
if (dom != NULL)
virDomainFree(dom);
virConnectClose(conn);
return ret;
}