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ISDCT occasionally reports very high NativeMaxLBA

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?

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15 Replies
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Community Manager
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Hello Deix,

 

 

Thanks for posting in our community. We understand that you're experiencing a problems with the reported NativeMaxLBA for your NVMe drives.

 

 

In order to better assist you, please provide us with the following information:

 

 

- What ISDCT (Intel® SSD Data Center Tool) version are you using?

 

- Is the issue limited to your Intel® SSD DC P3700 Series, or are there other models affected?

 

- What's the firmware version on your Intel® SSD DC P3700 Series?

 

- Have you confirmed if the reported value is present on other NVMe drive formats other than LBAF 1?

 

 

Best regards,

 

Eugenio F.
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Hello Eugenio,

The ISDCT version used was 3.0.9.

For now we have 2 documented occurrences, both on Intel SSD DC P3700 Series drives formatted to LBAF 1, with 8DV10130 firmware on one and 8DV10171 on the other device.

There were some earlier sightings for this issue, but unfortunately no data were collected and I cannot confirm that only this configuration is affected basing on 2 mentioned occurrences.

Best regards!

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Community Manager
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Hello Deix,

 

 

Thanks for your reply.

 

 

Thehttps://www.intel.com/content/www/us/en/support/articles/000017245/memory-and-storage.html latest firmware for Intel® SSD DC P3700 Series is 8DV101H0. Please install the https://downloadcenter.intel.com/download/27497/Intel-SSD-Data-Center-Tool?v=t latest version of ISDCT (3.0.10 as of today) and update the firmware on both drives using ISDCT.

 

 

Please let us know if the issue persists.

 

 

Best regards,

 

Eugenio F.
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Hi,

I have updated ISDCT to 3.0.10 and performed FW update on few NVMe P3700 disks (not the ones tested before) and all disks with new FW are non-formattable now. (Actually format works only to current setting which is LBAF 0, any other target LBAF results in output as below). This also means that I cannot provide any info if the FW update solves our earlier problem. I'm not going to update any more disks for now, as we don't want to lose the ability to change LBAF.

# isdct show -intelssd 0

- Intel SSD DC P3700 Series CVFT4215005G400BGN -

Bootloader : 8B1B0133

DevicePath : /dev/nvme0n1

DeviceStatus : Healthy

Firmware : 8DV101H0

FirmwareUpdateAvailable : The selected Intel SSD contains current firmware as of this tool release.

Index : 0

ModelNumber : INTEL SSDPEDMD400G4

ProductFamily : Intel SSD DC P3700 Series

SerialNumber : CVFT4215005G400BGN

# isdct start -intelssd 0 -nvmeformat LBAFormat = 1 SecureEraseSetting = 0 MetadataSettings = 1

WARNING! You have selected to format the drive!

Proceed with the format? (Y|N): y

Formatting...(This can take several minutes to complete)

- Intel SSD DC P3700 Series CVFT4215005G400BGN -

Status : NVMe command reported a problem.

With other tool:

 

# nvme_format_ns /dev/nvme0n1 1 1 0

Entered format index 1, ms 1, ses 0, formatting namespace

NVME Admin command error:6

Do you have any recommendation so we can format the disks again? Is there a possibility to downgrade FW?

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Community Manager
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Hello Deix,

I'll like to check this with our engineers. Before I do so, there are a couple of things we need to confirm:

- What's your motherboard model?

 

- Are the Intel® SSD DC P3700 plugged directly to the motherboard PCIe slots, or are there any devices in between (such as a RAID controllers)? If so, please provide us with the device model.

- We understand you're using Ubuntu 16*. What's the exact version and kernel?

Best regards,

 

Eugenio F.
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Community Manager
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Hello Deix

We haven't heard from you in a while. Please let us know if there's anything else we can do for you.

Best regards,

 

Eugenio F.
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Hi Eugenio,

It busy time for me, hence the delay

The info you asked for:

1. Motherboard in mentioned computer is:

Manufacturer: ASUSTeK COMPUTER INC.

Product Name: RAMPAGE IV EXTREME

Version: Rev 1.xx

2. The drives are plugged directly to PCIe slots

3. We use Ubuntu 16.04 on kernel 4.4.0-28-generic

Hope this info will be useful.

Regards,

Daniel

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Community Manager
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Hello Deix,

 

 

Thanks for your reply. I'll review this with a higher tier of support and we'll be back with you as soon as possible.

 

 

Best regards,

 

Eugenio F.
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Community Manager
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Hello Deix,

Some points regarding your configuration called our attention. Please let us know the following:

- Can you test formatting the drives on a different flavor of Linux*? ISDCT has not been validated on Ubuntu* and the drives are usually tested on Red Hat* and SUSE*.

 

- Have you tested using a previous version of ISDCT? You upgraded from version 3.0.9 to 3.0.10. The previous version is https://downloadcenter.intel.com/download/27248/Intel-SSD-Data-Center-Tool still available for download.

Best regards,

 

Eugenio F.
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Hi Eugenio,

After new firmware was uploaded I've tested formatting with both ISDCT 3.0.9 and 3.0.10, and now also on SUSE Linux Enterprise Server 12 SP3 (kernel 4.4.103-6.38-default) (both ISDCT versions).

Every time I get:

# isdct start -intelssd 0 -nvmeformat LBAFormat = 1 SecureEraseSetting = 0 MetadataSettings = 1

WARNING! You have selected to format the drive!

Proceed with the format? (Y|N): y

Formatting...(This can take several minutes to complete)

- Intel SSD DC P3700 Series CVFT4215005G400BGN -

Status : NVMe command reported a problem.

Regards,

Daniel

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Community Manager
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Hello Daniel,

 

 

Thank you so much for taking the time to ran the tests.

 

 

Please allow us more time to keep investigating based on this information.

 

 

Best regards,

 

Eugenio F.
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Community Manager
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Hello Deix,

Thanks for your patience.

We were able to update firmware on our Intel® SSD P3700 to the latest version (8DV101H0) and format it to LBA1. We also noticed the NativeMaxLBA reported as normal.

The test was run on Cent OS 7*, please refer to the attached log for the command flow. Tests on Ubuntu* are still pending.

If you have any system with Cent OS*, you may test formatting the drives there. We'll let you know as soon as we run tests on Ubuntu*.

Best regards,

 

Eugenio F.
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Community Manager
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Hello Deix,

We've performed a the test on Ubuntu 16.04. We secured erase drive and were able to successfully format to LBAF 1.

However, we did notice the NativeMaxLBA was reporting a high value. Though this doesn't affect drive performance, I've reported the issue to our engineers.

As for the drives, please let us know if you're still experimenting issues to format them to LBAF 1.

Best regards,

 

Eugenio F.
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Eugenio, thanks for investigating this.

I'm glad that the high Max LBA issue was noticed, and hopefully will be fixed soon, although it looks a bit different than the issue I have encountered (in your case the value looks quite random, in mine it looked like -1 unsigned overflow - 0x‭7FFFFFFFFFFFFFFF‬).

Unfortunately I will not have time to pursue the formatting issue anytime soon (the problem is still present).

Thanks for your help and time!

Daniel

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Community Manager
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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.
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