Detect AWS disks

[JeffreyDevloo]

Problem description

The disks of an AWS node do not have any id associated with them. AWS ensures that the diskname stays the same. The Framework is currently unable to work with only the diskname. We should detect and assume it is an AWS in that case.

Sync disk logging:

Configuration dict with all disk information:
{'xvda': {'aliases': ['/dev/xvda'],
   'is_ssd': True,
   'model': None,
   'name': 'xvda',
   'partitions': [{'aliases': ['/dev/disk/by-label/cloudimg-rootfs'],
     'filesystem': 'ext4',
     'mountpoint': '/',
     'offset': 1048576,
     'size': 8588869120,
     'state': 'FAILURE'}],
   'serial': None,
   'size': 8589934592,
   'state': 'OK'},
  'xvdb': {'aliases': ['/dev/xvdb'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdb',
   'partitions': [{'aliases': ['/dev/disk/by-partlabel/xvdb'],
     'filesystem': 'xfs',
     'mountpoint': None,
     'offset': 2097152,
     'size': 2000384163840,
     'state': 'OK'}],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvdc': {'aliases': ['/dev/xvdc'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdc',
   'partitions': [],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvdd': {'aliases': ['/dev/xvdd'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdd',
   'partitions': [{'aliases': ['/dev/disk/by-partlabel/xvdd'],
     'filesystem': 'xfs',
     'mountpoint': '/mnt/alba-asd/2LDJKAd2DW1Tj6sh',
     'offset': 2097152,
     'size': 2000384163840,
     'state': 'FAILURE'}],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvde': {'aliases': ['/dev/xvde'],
   'is_ssd': True,
   'model': None,
   'name': 'xvde',
   'partitions': [{'aliases': ['/dev/disk/by-partlabel/xvde'],
     'filesystem': None,
     'mountpoint': None,
     'offset': 2097152,
     'size': 2000384163840,
     'state': 'OK'}],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvdf': {'aliases': ['/dev/xvdf'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdf',
   'partitions': [],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvdg': {'aliases': ['/dev/xvdg'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdg',
   'partitions': [{'aliases': ['/dev/disk/by-partlabel/xvdg'],
     'filesystem': None,
     'mountpoint': None,
     'offset': 2097152,
     'size': 2000384163840,
     'state': 'OK'}],
   'serial': None,
   'size': 2000387309568,
   'state': 'OK'},
  'xvdh': {'aliases': ['/dev/xvdh'],
   'is_ssd': True,
   'model': None,
   'name': 'xvdh',
   'partitions': [],
   'serial': None,
   'size': 107374182400,
   'state': 'OK'}}
Name alias mapping:
 {'/dev/xvda1': ['/dev/disk/by-label/cloudimg-rootfs'],
  '/dev/xvdb1': ['/dev/disk/by-partlabel/xvdb'],
  '/dev/xvdd1': ['/dev/disk/by-partlabel/xvdd'],
  '/dev/xvde1': ['/dev/disk/by-partlabel/xvde'],
  '/dev/xvdg1': ['/dev/disk/by-partlabel/xvdg']}
Alias name mapping:
 {'/dev/disk/by-label/cloudimg-rootfs': '/dev/xvda1',
  '/dev/disk/by-partlabel/xvdb': '/dev/xvdb1',
  '/dev/disk/by-partlabel/xvdd': '/dev/xvdd1',
  '/dev/disk/by-partlabel/xvde': '/dev/xvde1',
  '/dev/disk/by-partlabel/xvdg': '/dev/xvdg1'})

[wimpers]

@JeffreyDevloo any chance we can use a fake disk by id (something we set manually)?

[JeffreyDevloo]

You could try udev rules. Ask @jtorreke for an example

[sjovdnbos]

Can be closed as fixed since https://github.com/openvstorage/framework/issues/2023 is fixed