Samsung PM1643a truncated SMART on smartctl versions after 6.6

[Endo]

Hi,

We have brand new SSD: SAMSUNG MZILT3T8HBLS/007 PM1643a SAS
After smartctl version 6.6 (tested 7.0 and 7.2), most of the SMART informations are no longer displayed, watching diff this is missing:

- Percentage used endurance indicator
- Accumulated start-stop cycles:  2
- Specified load-unload count over device lifetime:  0
- Accumulated load-unload cycles:  0
...
-Error counter log:
-           Errors Corrected by           Total   Correction     Gigabytes    Total
-               ECC          rereads/    errors   algorithm      processed    uncorrected
-           fast | delayed   rewrites  corrected  invocations   [10^9 bytes]  errors
-read:          0        0         0         0          0       1857.755           0
-write:         0        0         0         0          0       2817.675           0

-Non-medium error count:        0
-
-No self-tests have been logged

I saw similar ticket #1239 , but no luck with this SSD on version:
smartctl 7.2 2021-09-14 r5236 [FreeBSD 12.3-STABLE amd64] (local build)
OS: FreeBSD 12.3-STABLE #0 r371457M

Attached the output of the following commands, for both version 6.6 and 7.2:
smartctl -x /dev/da12 (da12_smartctl_6.6_-x and da12_smartctl_7.2_-x)
smartctl -x /dev/da12 -r ioctl,2 (da12_smartctl_6.6_-x_-r_ioctl2 and da12_smartctl_7.2_-x_-r_ioctl2)

Please inform if you need more details or to try patches.
Thank you!

[Endo]

Just built trunk/smartmontools code and seems the "smartctl 7.3 2022-01-16 r5304" version works fine: missing lines are present, and even more (about Temperature and "Pending defect count").

Found mention of Samsung SAS SSD in r5276, may be related.

Attached the output of "./smartctl -x /dev/da12" (da12_smartctl_7.3_-x)

I will look forward to smartctl 7.3 official release (and sysutils/smartmontools FreeBSD port update)!

[Christian Franke]

Seems to be fixed by some of the recent SCSI/SAS related commits.