[vhostmd] add new plugin

Add a plugin for the Virtual Host Metrics Daemon (vhostmd) to
collect VM performance metrics from the system.

Fixes #527.

Signed-off-by: Luca Miccini <luca.miccini@redhat.com>
Signed-off-by: Bryn M. Reeves <bmr@redhat.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/sos/plugins/vhostmd.py b/sos/plugins/vhostmd.py
new file mode 100644
index 00000000..67119454
--- /dev/null
+++ b/sos/plugins/vhostmd.py
@@ -0,0 +1,52 @@
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program 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 General Public License for more details.
+
+# 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.
+
+from sos.plugins import Plugin, RedHatPlugin
+
+
+class vhostmd(Plugin, RedHatPlugin):
+    """vhostmd virtualization metrics collection
+    """
+
+    plugin_name = 'vhostmd'
+    profiles = ['sap']
+
+    packages = ['virt-what']
+
+    def setup(self):
+        vw = self.get_command_output("virt-what")['output'].splitlines()
+
+        if not vw:
+            return
+
+        if "vmware" in vw or "kvm" in vw or "xen" in vw:
+            # if vm-dump-metrics is installed use it
+            if self.is_installed("vm-dump-metrics"):
+                self.add_cmd_output("vm-dump-metrics",
+                                    suggest_filename="virt_metrics")
+            else:
+                # otherwise use the raw vhostmd disk presented (256k size)
+                d = self.get_command_output("lsblk -d")
+                for disk in d['output'].splitlines():
+                    if "256K" in disk:
+                        dev = disk.split()[0]
+                        check = self.get_command_output(
+                            "dd if=/dev/%s bs=25 count=1" % dev)
+                        if 'metric' in check['output']:
+                            self.add_cmd_output("dd if=/dev/%s bs=256k count=1"
+                                                % dev,
+                                                suggest_filename="virt_\
+                                                        metrics")
+
+# vim: et ts=4 sw=4