docs: def _iostat_aix(interval, count, disks):
      '''
      AIX support to gather and return (averaged) IO stats.
      '''
      log.debug('DGM disk iostat entry')
  
      if disks is None:
          iostat_cmd = 'iostat -dD {0} {1} '.format(interval, count)
      elif isinstance(disks, six.string_types):
          iostat_cmd = 'iostat -dD {0} {1} {2}'.format(disks, interval, count)
      else:
          iostat_cmd = 'iostat -dD {0} {1} {2}'.format(' '.join(disks), interval, count)
  
      ret = {}
      procn = None
      fields = []
      disk_name = ''
      disk_mode = ''
      dev_stats = collections.defaultdict(list)
      for line in __salt__['cmd.run'](iostat_cmd).splitlines():
          # Note: iostat -dD is per-system
          #
          #root@l490vp031_pub:~/devtest# iostat -dD hdisk6 1 3
          #
          #System configuration: lcpu=8 drives=1 paths=2 vdisks=2
          #
          #hdisk6          xfer:  %tm_act      bps      tps      bread      bwrtn
          #                          0.0      0.0      0.0        0.0        0.0
          #                read:      rps  avgserv  minserv  maxserv   timeouts      fails
          #                          0.0      0.0      0.0      0.0           0          0
          #               write:      wps  avgserv  minserv  maxserv   timeouts      fails
          #                          0.0      0.0      0.0      0.0           0          0
          #               queue:  avgtime  mintime  maxtime  avgwqsz    avgsqsz     sqfull
          #                          0.0      0.0      0.0      0.0        0.0         0.0
          #--------------------------------------------------------------------------------
          #
          #hdisk6          xfer:  %tm_act      bps      tps      bread      bwrtn
          #                          9.6     16.4K     4.0       16.4K       0.0
          #                read:      rps  avgserv  minserv  maxserv   timeouts      fails
          #                          4.0      4.9      0.3      9.9           0          0
          #               write:      wps  avgserv  minserv  maxserv   timeouts      fails
          #                          0.0      0.0      0.0      0.0           0          0
          #               queue:  avgtime  mintime  maxtime  avgwqsz    avgsqsz     sqfull
          #                          0.0      0.0      0.0      0.0        0.0         0.0
          #--------------------------------------------------------------------------------
          #
          #hdisk6          xfer:  %tm_act      bps      tps      bread      bwrtn
          #                          0.0      0.0      0.0        0.0        0.0
          #                read:      rps  avgserv  minserv  maxserv   timeouts      fails
          #                          0.0      0.0      0.3      9.9           0          0
          #               write:      wps  avgserv  minserv  maxserv   timeouts      fails
          #                          0.0      0.0      0.0      0.0           0          0
          #               queue:  avgtime  mintime  maxtime  avgwqsz    avgsqsz     sqfull
          #                          0.0      0.0      0.0      0.0        0.0         0.0
          #--------------------------------------------------------------------------------
          if not line or line.startswith('System') or line.startswith('-----------'):
              continue
  
          if not re.match(r'\s', line):
              #seen disk name
              dsk_comps = line.split(':')
              dsk_firsts = dsk_comps[0].split()
              disk_name = dsk_firsts[0]
              disk_mode = dsk_firsts[1]
              fields = dsk_comps[1].split()
              if disk_name not in dev_stats.keys():
                  dev_stats[disk_name] = []
                  procn = len(dev_stats[disk_name])
                  dev_stats[disk_name].append({})
                  dev_stats[disk_name][procn][disk_mode] = {}
                  dev_stats[disk_name][procn][disk_mode]['fields'] = fields
                  dev_stats[disk_name][procn][disk_mode]['stats'] = []
              continue
  
          if ':' in line:
              comps = line.split(':')
              fields = comps[1].split()
              disk_mode = comps[0].lstrip()
              if disk_mode not in dev_stats[disk_name][0].keys():
                  dev_stats[disk_name][0][disk_mode] = {}
                  dev_stats[disk_name][0][disk_mode]['fields'] = fields
                  dev_stats[disk_name][0][disk_mode]['stats'] = []
          else:
              line = line.split()
              stats = [_parse_numbers(x) for x in line[:]]
              dev_stats[disk_name][0][disk_mode]['stats'].append(stats)
  
      iostats = {}
  
      for disk, list_modes in dev_stats.items():
          iostats[disk] = {}
          for modes in list_modes:
              for disk_mode in modes.keys():
                  fields = modes[disk_mode]['fields']
                  stats = modes[disk_mode]['stats']
                  iostats[disk][disk_mode] = _iostats_dict(fields, stats)
  
      return iostats