[libvirt] [PATCH v2] Add a virt-host-validate command to sanity check HV config
Daniel P. Berrange
berrange at redhat.com
Fri Jan 27 14:59:59 UTC 2012
From: "Daniel P. Berrange" <berrange at redhat.com>
To assist people in verifying that their host is operating in an
optimal manner, provide a 'virt-host-validate' command. For each
type of hypervisor, it will check any pre-requisites, or other
good recommendations and report what's working & what is not.
eg
# virt-host-validate
QEMU: Checking for device /dev/kvm : FAIL (Check that the 'kvm-intel' or 'kvm-amd' modules are loaded & the BIOS has enabled virtualization)
QEMU: Checking for device /dev/vhost : WARN (Load the 'vhost_net' module to improve performance of virtio networking)
QEMU: Checking for device /dev/net/tun : PASS
LXC: Checking for Linux >= 2.6.26 : PASS
This warns people if they have vmx/svm, but don't have /dev/kvm. It
also warns about missing /dev/vhost net.
In version 2:
- Add to RPM specs
- Add man page
- Use getopt to parse --help, --version & --quiet options
- Don't use VT100 escape codes unless on a tty
- Disable QEMU / LXC checks if not compiled into libvirt
---
tools/Makefile.am | 33 ++++++-
tools/virt-host-validate-common.c | 214 +++++++++++++++++++++++++++++++++++++
tools/virt-host-validate-common.h | 57 ++++++++++
tools/virt-host-validate-lxc.c | 37 +++++++
tools/virt-host-validate-lxc.h | 27 +++++
tools/virt-host-validate-qemu.c | 52 +++++++++
tools/virt-host-validate-qemu.h | 27 +++++
tools/virt-host-validate.c | 213 ++++++++++++++++++++++++++++++++++++
8 files changed, 658 insertions(+), 2 deletions(-)
create mode 100644 tools/virt-host-validate-common.c
create mode 100644 tools/virt-host-validate-common.h
create mode 100644 tools/virt-host-validate-lxc.c
create mode 100644 tools/virt-host-validate-lxc.h
create mode 100644 tools/virt-host-validate-qemu.c
create mode 100644 tools/virt-host-validate-qemu.h
create mode 100644 tools/virt-host-validate.c
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 6705546..6596a51 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -30,14 +30,18 @@ EXTRA_DIST = \
DISTCLEANFILES =
bin_SCRIPTS = virt-xml-validate virt-pki-validate
-bin_PROGRAMS = virsh
+bin_PROGRAMS = virsh virt-host-validate
if HAVE_SANLOCK
sbin_SCRIPTS = virt-sanlock-cleanup
DISTCLEANFILES += virt-sanlock-cleanup
endif
-dist_man1_MANS = virt-xml-validate.1 virt-pki-validate.1 virsh.1
+dist_man1_MANS = \
+ virt-host-validate.1 \
+ virt-pki-validate.1 \
+ virt-xml-validate.1 \
+ virsh.1
if HAVE_SANLOCK
dist_man8_MANS = virt-sanlock-cleanup.8
endif
@@ -56,6 +60,9 @@ virt-pki-validate: virt-pki-validate.in Makefile
virt-pki-validate.1: virt-pki-validate.in
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
+virt-host-validate.1: virt-host-validate.c
+ $(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
+
virt-sanlock-cleanup: virt-sanlock-cleanup.in Makefile
$(AM_V_GEN)sed -e 's,[@]SYSCONFDIR@,$(sysconfdir),' \
-e 's,[@]LOCALSTATEDIR@,$(localstatedir),' < $< > $@ \
@@ -64,6 +71,28 @@ virt-sanlock-cleanup: virt-sanlock-cleanup.in Makefile
virt-sanlock-cleanup.8: virt-sanlock-cleanup.in
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
+virt_host_validate_SOURCES = \
+ virt-host-validate.c \
+ virt-host-validate-common.c virt-host-validate-common.h \
+ virt-host-validate-qemu.c virt-host-validate-qemu.h \
+ virt-host-validate-lxc.c virt-host-validate-lxc.h \
+ $(NULL)
+
+virt_host_validate_LDFLAGS = \
+ $(WARN_LDFLAGS) \
+ $(COVERAGE_LDFLAGS) \
+ $(NULL)
+
+virt_host_validate_LDADD = \
+ ../src/libvirt.la \
+ ../gnulib/lib/libgnu.la \
+ $(NULL)
+
+virt_host_validate_CFLAGS = \
+ $(WARN_CFLAGS) \
+ $(COVERAGE_CFLAGS) \
+ $(NULL)
+
virsh_SOURCES = \
console.c console.h \
virsh.c
diff --git a/tools/virt-host-validate-common.c b/tools/virt-host-validate-common.c
new file mode 100644
index 0000000..e8cff85
--- /dev/null
+++ b/tools/virt-host-validate-common.c
@@ -0,0 +1,214 @@
+/*
+ * virt-host-validate-common.c: Sanity check helper APis
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <config.h>
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/utsname.h>
+
+#include "util.h"
+#include "memory.h"
+#include "virfile.h"
+#include "virt-host-validate-common.h"
+
+static bool quiet;
+
+void virHostMsgSetQuiet(bool quietFlag)
+{
+ quiet = quietFlag;
+}
+
+void virHostMsgCheck(const char *prefix,
+ const char *format,
+ ...)
+{
+ va_list args;
+ char *msg;
+
+ if (quiet)
+ return;
+
+ va_start(args, format);
+ if (virVasprintf(&msg, format, args) < 0) {
+ perror("malloc");
+ abort();
+ }
+ va_end(args);
+
+ fprintf(stdout, _("%6s: Checking %-60s: "), prefix, msg);
+ VIR_FREE(msg);
+}
+
+static bool virHostMsgWantEscape(void)
+{
+ static bool detectTty = true;
+ static bool wantEscape = false;
+ if (detectTty) {
+ if (isatty(STDOUT_FILENO))
+ wantEscape = true;
+ detectTty = false;
+ }
+ return wantEscape;
+}
+
+void virHostMsgPass(void)
+{
+ if (quiet)
+ return;
+
+ if (virHostMsgWantEscape())
+ fprintf(stdout, "\033[32m%s\033[0m\n", _("PASS"));
+ else
+ fprintf(stdout, "%s\n", _("PASS"));
+}
+
+
+static const char * failMessages[] = {
+ N_("FAIL"),
+ N_("WARN"),
+ N_("NOTE"),
+};
+
+verify(ARRAY_CARDINALITY(failMessages) == VIR_HOST_VALIDATE_LAST);
+
+static const char *failEscapeCodes[] = {
+ "\033[31m",
+ "\033[33m",
+ "\033[34m",
+};
+
+verify(ARRAY_CARDINALITY(failEscapeCodes) == VIR_HOST_VALIDATE_LAST);
+
+void virHostMsgFail(virHostValidateLevel level,
+ const char *hint)
+{
+ if (virHostMsgWantEscape())
+ fprintf(stdout, "%s%s\033[0m (%s)\n",
+ failEscapeCodes[level], _(failMessages[level]), hint);
+ else
+ fprintf(stdout, "%s (%s)\n",
+ _(failMessages[level]), hint);
+}
+
+
+int virHostValidateDevice(const char *hvname,
+ const char *devname,
+ virHostValidateLevel level,
+ const char *hint)
+{
+ virHostMsgCheck(hvname, "for device %s", devname);
+
+ if (access(devname, R_OK|W_OK) < 0) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ virHostMsgPass();
+ return 0;
+}
+
+
+int virHostValidateHasCPUFlag(const char *name)
+{
+ FILE *fp = fopen("/proc/cpuinfo", "r");
+ int ret = 0;
+
+ if (!fp)
+ return 0;
+
+ do {
+ char line[1024];
+
+ if (!fgets(line, sizeof(line), fp))
+ break;
+
+ if (strstr(line, name)) {
+ ret = 1;
+ break;
+ }
+ } while (1);
+
+ VIR_FORCE_FCLOSE(fp);
+
+ return ret;
+}
+
+
+int virHostValidateLinuxKernel(const char *hvname,
+ int version,
+ virHostValidateLevel level,
+ const char *hint)
+{
+ struct utsname uts;
+ int major, minor, micro;
+ unsigned long thisversion;
+
+ uname(&uts);
+
+ virHostMsgCheck(hvname, _("for Linux >= %d.%d.%d"),
+ ((version >> 16) & 0xff),
+ ((version >> 8) & 0xff),
+ (version & 0xff));
+
+ if (STRNEQ(uts.sysname, "Linux")) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ if (virParseVersionString(uts.release, &thisversion, true) < 0) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ micro = (thisversion & 0xff);
+ minor = ((thisversion >> 8) & 0xff);
+ major = ((thisversion >> 16) & 0xff);
+
+ if (major > ((version >> 16) & 0xff)) {
+ virHostMsgPass();
+ return 0;
+ } else if (major < ((version >> 16) & 0xff)) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ if (minor > ((version >> 8) & 0xff)) {
+ virHostMsgPass();
+ return 0;
+ } else if (minor < ((version >> 8) & 0xff)) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ if (micro > (version & 0xff)) {
+ virHostMsgPass();
+ return 0;
+ } else if (micro < (version & 0xff)) {
+ virHostMsgFail(level, hint);
+ return -1;
+ }
+
+ virHostMsgPass();
+ return 0;
+}
diff --git a/tools/virt-host-validate-common.h b/tools/virt-host-validate-common.h
new file mode 100644
index 0000000..99b09b6
--- /dev/null
+++ b/tools/virt-host-validate-common.h
@@ -0,0 +1,57 @@
+/*
+ * virt-host-validate-common.h: Sanity check helper APis
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef __VIRT_HOST_VALIDATE_COMMON_H__
+#define __VIRT_HOST_VALIDATE_COMMON_H__
+
+#include "internal.h"
+
+typedef enum {
+ VIR_HOST_VALIDATE_FAIL,
+ VIR_HOST_VALIDATE_WARN,
+ VIR_HOST_VALIDATE_NOTE,
+
+ VIR_HOST_VALIDATE_LAST,
+} virHostValidateLevel;
+
+extern void virHostMsgSetQuiet(bool quietFlag);
+
+extern void virHostMsgCheck(const char *prefix,
+ const char *format,
+ ...) ATTRIBUTE_FMT_PRINTF(2, 3);
+
+extern void virHostMsgPass(void);
+extern void virHostMsgFail(virHostValidateLevel level,
+ const char *hint);
+
+extern int virHostValidateDevice(const char *hvname,
+ const char *devname,
+ virHostValidateLevel level,
+ const char *hint);
+
+extern int virHostValidateHasCPUFlag(const char *name);
+
+extern int virHostValidateLinuxKernel(const char *hvname,
+ int version,
+ virHostValidateLevel level,
+ const char *hint);
+
+#endif /* __VIRT_HOST_VALIDATE_COMMON_H__ */
diff --git a/tools/virt-host-validate-lxc.c b/tools/virt-host-validate-lxc.c
new file mode 100644
index 0000000..9d69b67
--- /dev/null
+++ b/tools/virt-host-validate-lxc.c
@@ -0,0 +1,37 @@
+/*
+ * virt-host-validate-lxc.c: Sanity check a LXC hypervisor host
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <config.h>
+
+#include "virt-host-validate-lxc.h"
+#include "virt-host-validate-common.h"
+
+int virHostValidateLXC(void)
+{
+ int ret = 0;
+
+ if (virHostValidateLinuxKernel("LXC", (2 << 16) | (6 << 8) | 26,
+ VIR_HOST_VALIDATE_FAIL,
+ _("Upgrade to a kernel supporting namespaces")) < 0)
+ ret = -1;
+
+ return ret;
+}
diff --git a/tools/virt-host-validate-lxc.h b/tools/virt-host-validate-lxc.h
new file mode 100644
index 0000000..ef824be
--- /dev/null
+++ b/tools/virt-host-validate-lxc.h
@@ -0,0 +1,27 @@
+/*
+ * virt-host-validate-lxc.h: Sanity check a LXC hypervisor host
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef __VIRT_HOST_VALIDATE_LXC_H__
+#define __VIRT_HOST_VALIDATE_LXC_H__
+
+extern int virHostValidateLXC(void);
+
+#endif /* __VIRT_HOST_VALIDATE_LXC_H__ */
diff --git a/tools/virt-host-validate-qemu.c b/tools/virt-host-validate-qemu.c
new file mode 100644
index 0000000..d3a82cc
--- /dev/null
+++ b/tools/virt-host-validate-qemu.c
@@ -0,0 +1,52 @@
+/*
+ * virt-host-validate-qemu.c: Sanity check a QEMU hypervisor host
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <config.h>
+
+#include "virt-host-validate-qemu.h"
+#include "virt-host-validate-common.h"
+
+int virHostValidateQEMU(void)
+{
+ int ret = 0;
+
+ if (virHostValidateHasCPUFlag("svm") ||
+ virHostValidateHasCPUFlag("vmx")) {
+ if (virHostValidateDevice("QEMU", "/dev/kvm",
+ VIR_HOST_VALIDATE_FAIL,
+ _("Check that the 'kvm-intel' or 'kvm-amd' modules are "
+ "loaded & the BIOS has enabled virtualization")) < 0)
+ ret = -1;
+ }
+
+ if (virHostValidateDevice("QEMU", "/dev/vhost-net",
+ VIR_HOST_VALIDATE_WARN,
+ _("Load the 'vhost_net' module to improve performance "
+ "of virtio networking")) < 0)
+ ret = -1;
+
+ if (virHostValidateDevice("QEMU", "/dev/net/tun",
+ VIR_HOST_VALIDATE_FAIL,
+ _("Load the 'tun' module to enable networking for QEMU guests")) < 0)
+ ret = -1;
+
+ return ret;
+}
diff --git a/tools/virt-host-validate-qemu.h b/tools/virt-host-validate-qemu.h
new file mode 100644
index 0000000..3e79d51
--- /dev/null
+++ b/tools/virt-host-validate-qemu.h
@@ -0,0 +1,27 @@
+/*
+ * virt-host-validate-qemu.h: Sanity check a QEMU hypervisor host
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef __VIRT_HOST_VALIDATE_QEMU_H__
+#define __VIRT_HOST_VALIDATE_QEMU_H__
+
+extern int virHostValidateQEMU(void);
+
+#endif /* __VIRT_HOST_VALIDATE_QEMU_H__ */
diff --git a/tools/virt-host-validate.c b/tools/virt-host-validate.c
new file mode 100644
index 0000000..06fee58
--- /dev/null
+++ b/tools/virt-host-validate.c
@@ -0,0 +1,213 @@
+/*
+ * virt-host-check.c: Sanity check a hypervisor host
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <gettext.h>
+#include <getopt.h>
+
+#include "internal.h"
+#include "configmake.h"
+
+#include "virt-host-validate-common.h"
+#if WITH_QEMU
+#include "virt-host-validate-qemu.h"
+#endif
+#if WITH_LXC
+#include "virt-host-validate-lxc.h"
+#endif
+
+static void
+show_help(FILE *out, const char *argv0)
+{
+ fprintf(out,
+ _("\n"
+ "syntax: %s [OPTIONS] [HVTYPE]\n"
+ "\n"
+ " Hypervisor types:\n"
+ "\n"
+ " - qemu\n"
+ " - lxc\n"
+ "\n"
+ " Options:\n"
+ " -h, --help Display command line help\n"
+ " -v, --version Display command version\n"
+ " -q, --quiet Don't display progress information\n"
+ "\n"),
+ argv0);
+}
+
+static void
+show_version(FILE *out, const char *argv0)
+{
+ fprintf(out, "version: %s %s\n", argv0, VERSION);
+}
+
+static const struct option argOptions[] = {
+ { "help", 0, NULL, 'h', },
+ { "version", 0, NULL, 'v', },
+ { "quiet", 0, NULL, 'q', },
+ { NULL, 0, NULL, '\0', }
+};
+
+int
+main(int argc, char **argv)
+{
+ const char *hvname = NULL;
+ int c;
+ int ret = EXIT_SUCCESS;
+ bool quiet = false;
+
+ if (!setlocale(LC_ALL, "")) {
+ perror("setlocale");
+ /* failure to setup locale is not fatal */
+ }
+ if (!bindtextdomain(PACKAGE, LOCALEDIR)) {
+ perror("bindtextdomain");
+ return EXIT_FAILURE;
+ }
+ if (!textdomain(PACKAGE)) {
+ perror("textdomain");
+ return EXIT_FAILURE;
+ }
+
+ while ((c = getopt_long(argc, argv, "hvq", argOptions, NULL)) != -1) {
+ switch (c) {
+ case 'v':
+ show_version(stdout, argv[0]);
+ return EXIT_SUCCESS;
+
+ case 'h':
+ show_help(stdout, argv[0]);
+ return EXIT_SUCCESS;
+
+ case 'q':
+ quiet = true;
+ break;
+
+ case '?':
+ default:
+ show_help(stderr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ }
+
+ if ((argc-optind) > 2) {
+ fprintf(stderr, _("%s: too many command line arguments\n"), argv[0]);
+ show_help(stderr, argv[0]);
+ return EXIT_FAILURE;
+ }
+
+ if (argc > 1)
+ hvname = argv[optind];
+
+ virHostMsgSetQuiet(quiet);
+
+#if WITH_QEMU
+ if ((!hvname || STREQ(hvname, "qemu")) &&
+ virHostValidateQEMU() < 0)
+ ret = EXIT_FAILURE;
+#endif
+
+#if WITH_LXC
+ if ((!hvname || STREQ(hvname, "lxc")) &&
+ virHostValidateLXC() < 0)
+ ret = EXIT_FAILURE;
+#endif
+
+ return ret;
+}
+
+/*
+
+=pod
+
+=head1 NAME
+
+ virt-host-validate - validate host virtualization setup
+
+=head1 SYNOPSIS
+
+ virt-host-validate [OPTIONS...] [HV-TYPE]
+
+=head1 DESCRIPTION
+
+This tool validates that the host is configured in a suitable
+way to run libvirt hypervisor drivers. If invoked without any
+arguments it will check support for all hypervisor drivers it
+is aware of. Optionally it can be given a particular hypervisor
+type ('qemu' or 'lxc') to restrict the checks to those relevant
+for that virtualization technology
+
+=head1 OPTIONS
+
+=over 4
+
+=item C<-v>, C<--version>
+
+Display the command version
+
+=item C<-h>, C<--help>
+
+Display the command line help
+
+=item C<-q>, C<--quiet>
+
+Don't display details of individual checks being performed.
+Only display output if a check does not pass.
+
+=back
+
+=head1 EXIT STATUS
+
+Upon successful validation, an exit status of 0 will be set. Upon
+failure a non-zero status will be set.
+
+=head1 AUTHOR
+
+Daniel P. Berrange
+
+=head1 BUGS
+
+Report any bugs discovered to the libvirt community via the
+mailing list C<http://libvirt.org/contact.html> or bug tracker C<http://libvirt.org/bugs.html>.
+Alternatively report bugs to your software distributor / vendor.
+
+=head1 COPYRIGHT
+
+Copyright (C) 2012 by Red Hat, Inc.
+
+=head1 LICENSE
+
+virt-host-validate is distributed under the terms of the GNU GPL v2+.
+This is free software; see the source for copying conditions. There
+is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE
+
+=head1 SEE ALSO
+
+C<virsh(1)>, C<virt-pki-validate>, C<virt-xml-validate>
+
+=cut
+
+*/
--
1.7.7.6
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