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  Prints the before and after node status, in a format designed to

  allow the user to understand the node's most important parameters.

  It is possible to customise the listed information by passing a

  comma-separated list of field names to this option (the field list

  is currently undocumented), or to extend the default field list by

  prefixing the additional field list with a plus sign. By default,

  the node list will contain the following information:

  F

    a character denoting the status of the node, with '-' meaning an

    offline node, '*' meaning N+1 failure and blank meaning a good

    node

  Name

    the node name

  t_mem

    the total node memory

  n_mem

    the memory used by the node itself

  i_mem

    the memory used by instances

  x_mem

    amount memory which seems to be in use but cannot be determined

    why or by which instance; usually this means that the hypervisor

    has some overhead or that there are other reporting errors

  f_mem

    the free node memory

  r_mem

    the reserved node memory, which is the amount of free memory

    needed for N+1 compliance

  t_dsk

    total disk

  f_dsk

    free disk

  pcpu

    the number of physical cpus on the node

  vcpu

    the number of virtual cpus allocated to primary instances

  pcnt

    number of primary instances

  scnt

    number of secondary instances

  p_fmem

    percent of free memory

  p_fdsk

    percent of free disk

  r_cpu

    ratio of virtual to physical cpus

  lCpu

    the dynamic CPU load (if the information is available)

  lMem

    the dynamic memory load (if the information is available)

  lDsk

    the dynamic disk load (if the information is available)

  lNet

    the dynamic net load (if the information is available)