GSmartControl & NVME drive

Ubuntu 18.04.5 (Linux Mint 19.3)
gsmartcontrol 1.1.3-1, amd64

I see that GSmartControl cannot work with NVME (SSD disk) correctly. I test with WD SN550 - 1TB, blue NVME drive.

Problem:
gsmartcontrol list my drive as /dev/nvme0n1. That is OK, but there is parent drive (/dev/nvme0) and that is not listed. /dev/nvme0 has some important information related to SMART, including value of TBW.

Other issue is that gsmartcontrol cannot identify NVME disk, it list it as "Unknown model".

I dump here output from GSmartControl and after that dump from tool smartctl.

=======================================================================
## gsmartcontrol (detail of /dev/nvme0n1 - 'Unknown model')

smartctl 6.6 2016-05-31 r4324 [x86_64-linux-5.0.0-32-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number: WDC WDS100T2B0C-00PXH0
Serial Number: 2052FQSECRET
Firmware Version: 211070WD
PCI Vendor/Subsystem ID: 0x15b7
IEEE OUI Identifier: 0x001b44
Total NVM Capacity: 1 000 204 886 016 [1,00 TB]
Unallocated NVM Capacity: 0
Controller ID: 1
Number of Namespaces: 1
Namespace 1 Size/Capacity: 1 000 204 886 016 [1,00 TB]
Namespace 1 Formatted LBA Size: 512
Local Time is: Thu May 27 18:31:08 2021 CEST
Firmware Updates (0x14): 2 Slots, no Reset required
Optional Admin Commands (0x0017): Security Format Frmw_DL *Other*
Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat *Other*
Maximum Data Transfer Size: 128 Pages
Warning Comp. Temp. Threshold: 80 Celsius
Critical Comp. Temp. Threshold: 85 Celsius
Namespace 1 Features (0x02): NA_Fields

Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
 0 + 3.50W 2.90W - 0 0 0 0 0 0
 1 + 2.70W 1.80W - 0 0 0 0 0 0
 2 + 1.90W 1.50W - 0 0 0 0 0 0
 3 - 0.0200W - - 3 3 3 3 3900 11000
 4 - 0.0050W - - 4 4 4 4 5000 39000

Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
 0 + 512 0 2
 1 - 4096 0 1

=== START OF SMART DATA SECTION ===
Read NVMe SMART/Health Information failed: NVMe Status 0x4002

=======================================================================

$ sudo smartctl -a /dev/nvme0

smartctl 6.6 2016-05-31 r4324 [x86_64-linux-5.0.0-32-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number: WDC WDS100T2B0C-00PXH0
Serial Number: 2052FQSECRET
Firmware Version: 211070WD
PCI Vendor/Subsystem ID: 0x15b7
IEEE OUI Identifier: 0x001b44
Total NVM Capacity: 1 000 204 886 016 [1,00 TB]
Unallocated NVM Capacity: 0
Controller ID: 1
Number of Namespaces: 1
Namespace 1 Size/Capacity: 1 000 204 886 016 [1,00 TB]
Namespace 1 Formatted LBA Size: 512
Local Time is: Thu May 27 18:33:33 2021 CEST
Firmware Updates (0x14): 2 Slots, no Reset required
Optional Admin Commands (0x0017): Security Format Frmw_DL *Other*
Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat *Other*
Maximum Data Transfer Size: 128 Pages
Warning Comp. Temp. Threshold: 80 Celsius
Critical Comp. Temp. Threshold: 85 Celsius
Namespace 1 Features (0x02): NA_Fields

Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
 0 + 3.50W 2.90W - 0 0 0 0 0 0
 1 + 2.70W 1.80W - 0 0 0 0 0 0
 2 + 1.90W 1.50W - 0 0 0 0 0 0
 3 - 0.0200W - - 3 3 3 3 3900 11000
 4 - 0.0050W - - 4 4 4 4 5000 39000

Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
 0 + 512 0 2
 1 - 4096 0 1

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff)
Critical Warning: 0x00
Temperature: 41 Celsius
Available Spare: 100%
Available Spare Threshold: 10%
Percentage Used: 0%
Data Units Read: 19 655 [10,0 GB]
Data Units Written: 1 953 526 [1,00 TB]
Host Read Commands: 136 955
Host Write Commands: 1 907 740
Controller Busy Time: 43
Power Cycles: 6
Power On Hours: 1
Unsafe Shutdowns: 2
Media and Data Integrity Errors: 0
Error Information Log Entries: 1
Warning Comp. Temperature Time: 0
Critical Comp. Temperature Time: 0

Error Information (NVMe Log 0x01, max 256 entries)
No Errors Logged

=======================================================================

$ sudo smartctl -a /dev/nvme0n1

smartctl 6.6 2016-05-31 r4324 [x86_64-linux-5.0.0-32-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number: WDC WDS100T2B0C-00PXH0
Serial Number: 2052FQSECRET
Firmware Version: 211070WD
PCI Vendor/Subsystem ID: 0x15b7
IEEE OUI Identifier: 0x001b44
Total NVM Capacity: 1 000 204 886 016 [1,00 TB]
Unallocated NVM Capacity: 0
Controller ID: 1
Number of Namespaces: 1
Namespace 1 Size/Capacity: 1 000 204 886 016 [1,00 TB]
Namespace 1 Formatted LBA Size: 512
Local Time is: Thu May 27 18:34:03 2021 CEST
Firmware Updates (0x14): 2 Slots, no Reset required
Optional Admin Commands (0x0017): Security Format Frmw_DL *Other*
Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat *Other*
Maximum Data Transfer Size: 128 Pages
Warning Comp. Temp. Threshold: 80 Celsius
Critical Comp. Temp. Threshold: 85 Celsius
Namespace 1 Features (0x02): NA_Fields

Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
 0 + 3.50W 2.90W - 0 0 0 0 0 0
 1 + 2.70W 1.80W - 0 0 0 0 0 0
 2 + 1.90W 1.50W - 0 0 0 0 0 0
 3 - 0.0200W - - 3 3 3 3 3900 11000
 4 - 0.0050W - - 4 4 4 4 5000 39000

Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
 0 + 512 0 2
 1 - 4096 0 1

=== START OF SMART DATA SECTION ===
Read NVMe SMART/Health Information failed: NVMe Status 0x4002