Custom Query (1458 matches)

Such format is used in Intel SSD (at least S3500 and 520, see Intel's specification) Thermal Throtle Status attribute. The first byte is the throttle status reported as integer percentage. The next four bytes number is number of times the thermal throttle has activated over lifetime.

Patch is attached. Although I have commiters right, I would like ask someone more skilled to review and apply the patch.

This is the output(below) I get from an SSD that has been in a temperature chamber.

Output ain't pretty anymore, used to be something like 23 (min/max 10/77)

I created a patch on github for that: ​https://github.com/fnadeau/smartmontools

I understand that you might not be interested in this patch for various reasons(drivedb.h not backward compatible, too many undocumented drive, etc.) Anyhow, I thought you might be interested.

smartctl 6.1 2013-03-16 r3800 [x86_64-linux-3.10.9-200.fc19.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     SandForce Driven SSDs
Device Model:     KINGSTON SVP200S3480G
Serial Number:    50026B7226020429
LU WWN Device Id: 5 0026b7 226020429
Firmware Version: 501ABBF0
User Capacity:    480 103 981 056 bytes [480 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS, ACS-2 T13/2015-D revision 3
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Fri Aug 23 13:13:12 2013 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

.......

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   120   120   050    Pre-fail  Always       -       0/0
.......
194 Temperature_Celsius     0x0022   242   083   000    Old_age   Always       -       242 (0 239 0 83 0)
.......
242 Lifetime_Reads_GiB      0x0032   000   000   000    Old_age   Always       -       2

File scsiata.cpp contains comments claiming that it supports fixed format response to SCSI request sense command (response code 0x70 and 0x71). Indeed, the implementation of sat_device::ata_pass_through() parses such responses correctly and returns true. However, it does not fill the descriptor buffer (adrp). Function smartcommandhandler() in atacmds.cpp calls sat_device::ata_pass_through() and fails if descriptor values are absent, specifically lba_high and lba_mid. It is not clear to me how this should be fixed:

1. Use a different logic when fixed format is returned (instead of checking lba_high and lba_mid),
2. Or, issue SCSI request sense command with the DESC bit set, which would force the descriptor format. As that may cause problems with older devices, perhaps a parameter should be introduced, settable in drivedb.h.

User-visible symptoms of this bug are:

1. smartd refuses to monitor the affected drive, producing an error such as: "Device: /dev/sdd [SAT], not capable of SMART Health Status check"
2. smartctl shows SMART info correctly, but with a complaint: "SMART STATUS RETURN: incomplete response, ATA output registers missing"

This problem was noticed with external USB drive: WD MyPassport 2TB (WDBY8L0020BBL), USB: 1058:0748