mdisk.xml

<?xml version="1.0" ?>

<!--

Copyright (C) 2008 Novell, Inc.

This file describes the format of metrics data collected in a virtual
host system and written to a metrics virtual block device (mvbd) mounted
read/write in the virtual host.  The mvbd can be surfaced read-only to
virtual machines using meachanisms provided by the virtual host.

The mvbd is a raw, file-backed block device (potentially ramdisk)
containing:

Signature: 4 bytes, network order
Busy:      4 bytes, network order
Sum:       4 bytes, network order
Length:    4 bytes, network order
Content:   length bytes

Signature is static and set to 'mvbd'.  Busy is 0 when not writing to disk.
Sum and Length are the md5 checksum and length of content, respectively.

Content is self describing in the DTD and example below.  Current metric
types are: int32, uint32, int64, uint64, real32, real64, and string.  The
context attribute specifies whether the metric is host or vm.

-->
  <metrics>
    <metric type="uint32" context="host">
      <name>TotalPhyCPUs</name>
      <value>16</value>
    </metric>
    <metric type="uint64" context="host">
      <name>TotalPhyMem</name>
      <value>8124</value>
    </metric>
    <metric type="uint64" context="host">
      <name>FreePhyMem</name>
      <value>8124</value>
    </metric>
    <metric type="uint32" context="vm" id="0">
      <name>NumCPUsUtilized</name>
      <value>16</value>
    </metric>
    <metric type="real64" context="vm" id="0">
      <name>TotalCPUTime</name>
      <value>1234.567</value>
    </metric>
    <metric type="uint64" context="vm" id="0">
      <name>PagedOutMemory</name>
      <value>123456</value>
    </metric>
    <metric type="uint32" context="vm" id="2">
      <name>NumCPUsUtilized</name>
      <value>16</value>
    </metric>
    <metric type="real64" context="vm" id="2">
      <name>TotalCPUTime</name>
      <value>1234.567</value>
    </metric>
    <metric type="uint64" context="vm" id="2">
      <name>PagedOutMemory</name>
      <value>123456</value>
    </metric>
  </metrics>