It is similar in that a property is missing so the dictionary errors out
but in this case the error is in probert in the storage.py in the
blockdev probe.  when all the devices in in the block subsystem are
listed:


for device in context.list_devices(subsystem='block'):
    if device['MAJOR'] not in ["1", "7"]:
        attrs = udev_get_attributes(device)

The Samsung PM1725b is a dual port drive providing two access paths to
the controller.  It looks like this capability causes two device entries
to be reported in the device list (wwid are the same):

Device('/sys/devices/pci0000:e0/0000:e0:03.3/0000:e2:00.0/nvme/nvme0/nvme0c33n1')
{'alignment_offset': '0', 'capability': '630', 'device': None, 
'discard_alignment': '0', 'ext_range': '0', 'hidden': '1', 'inflight': '       
0        0', 'nguid': '34433930-4ba0-0316-0025-385900000003', 'nsid': '1', 
'range': '0', 'removable': '0', 'ro': '0', 'size': '3125627568', 'stat': '     
592        0    18048       48        0        0        0        0        0     
  4        8', 'subsystem': 'block', 'uevent': 'DEVTYPE=disk', 'uuid': 
'34433930-4ba0-0316-0025-385900000003', 'wwid': 
'eui.344339304ba003160025385900000003'}

Device('/sys/devices/virtual/nvme-subsystem/nvme-subsys0/nvme0n1')
{'alignment_offset': '0', 'bdi': None, 'capability': '50', 'dev': '259:1', 
'device': None, 'discard_alignment': '0', 'ext_range': '256', 'hidden': '0', 
'inflight': '       0        0', 'nguid': 
'34433930-4ba0-0316-0025-385900000003', 'nsid': '1', 'range': '0', 'removable': 
'0','ro': '0', 'size': '3125627568', 'stat': '       0        0        0        
0        0        0        0        0        0        0        0', 'subsystem': 
'block', 'uevent': 'MAJOR=259\nMINOR=1\nDEVNAME=nvme0n1\nDEVTYPE=disk', 'uuid': 
'34433930-4ba0-0316-0025-385900000003', 'wwid': 
'eui.344339304ba003160025385900000003'}

The first entry has the hidden property set and is lacking the
MAJOR/MINOR/DEVNAME properties.  Maybe to fix the bug the probe function
should skip any hidden entries and just use the non-hidden entry when
there are duplicates?

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https://bugs.launchpad.net/bugs/1839529

Title:
  Live-server installation fails to install on Samsung NVME

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