ISDCT occasionally reports very high NativeMaxLBA

[Daniel_M_Intel2]

Hi,

We sometimes encounter a problem where ISDCT reports very high NativeMaxLBA. I have logs from Ubuntu 16 (I'm not sure if problem happens on other OSes), where NVMe drive is formatted to atomic format (LBAF 1):

nvme_id_ns /dev/nvme0n1 | grep '(in use)'

# Exit code: 0, duration: 00:00:00.0155966

# stdout:

# lbaf 1 : ms:8 ds:9 rp:0x2 (in use)

isdct show -display Index -intelssd

# Exit code: 0, duration: 00:00:00.1250539

# stdout:

# - Intel SSD DC P3700 Series CVFT42150041400BGN -

# Index : 0

# - Intel SSD DC P3700 Series CVFT42150085400BGN -

# Index : 1

# - Intel SSD DC S3700 Series BTTV227401GB100FGN -

# Index : 2

# - Intel SSD DC S3700 Series BTTV227301HG100FGN -

# Index : 3

isdct show -display NativeMaxLBA -intelssd 0

# Exit code: 0, duration: 00:00:00.1250295

# stdout:

# - Intel SSD DC P3700 Series CVFT42150041400BGN -

# NativeMaxLBA : 9223372036854775807

isdct set -intelssd 0 MaximumLBA=native

# Exit code: 0, duration: 00:00:00.1406744

# stdout:

# Set MaximumLBA successful. Please power cycle the device.

isdct show -display MaximumLBA -intelssd 0

# Exit code: 0, duration: 00:00:00.1250353

# stdout:

# - Intel SSD DC P3700 Series CVFT42150041400BGN -

# MaximumLBA : 781422767

The value displayed in red is max Int64 value. As you can see after setting NativeMaxLBA to 'native' value returns to normal. Any ideas what could cause such behavior?

[idata]

Hello Deix,

You're welcome, we're here to help.

In case the issue persists, you may want to contact your https://www.intel.com/content/www/us/en/support/contact-support.html local support for warranty assistance. Please point them to this thread as reference.

Let us know if there's anything else we can do for you.

Best regards,

Eugenio F.