Display information about NVMe storage device.
You cannot display the identification information for NVMe storage device using hdparm utility.
$ sudo hdparm -i /dev/nvme0n1
/dev/nvme0n1: HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
Self-Monitoring, Analysis and Reporting Technology System (S.M.A.R.T.)
Install smartmontools package.
$ sudo apt install smartmontools
Display smartcl version.
$ smartctl --version
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org
smartctl comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it under
the terms of the GNU General Public License; either
version 2, or (at your option) any later version.
See http://www.gnu.org for further details.
smartmontools release 7.2 dated 2020-12-30 at 16:48:30 UTC
smartmontools SVN rev 5155 dated 2020-12-30 at 16:49:18
smartmontools build host: x86_64-pc-linux-gnu
smartmontools build with: C++17, GCC 11.2.0
smartmontools configure arguments: '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--localstatedir=/var' '--disable-option-checking' '--disable-silent-rules' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--runstatedir=/run' '--disable-maintainer-mode' '--disable-dependency-tracking' '--build=x86_64-linux-gnu' '--host=x86_64-linux-gnu' '--prefix=/usr' '--sysconfdir=/etc' '--mandir=/usr/share/man' '--with-initscriptdir=no' '--docdir=/usr/share/doc/smartmontools' '--with-attributelog=/var/lib/smartmontools/attrlog.' '--with-drivedbdir=/var/lib/smartmontools/drivedb' '--with-exampledir=/usr/share/doc/smartmontools/examples/' '--with-savestates=/var/lib/smartmontools/smartd.' '--with-smartdplugindir=/etc/smartmontools/smartd_warning.d' '--with-smartdscriptdir=/usr/share/smartmontools' '--with-systemdenvfile=/etc/default/smartmontools' '--with-systemdsystemunitdir=/lib/systemd/system' '--with-libsystemd=auto' '--with-selinux' 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu' 'CXXFLAGS=-g -O2 -ffile-prefix-map=/build/smartmontools-7teSgE/smartmontools-7.2=. -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -fsigned-char -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions -flto=auto -Wl,-z,relro -Wl,-z,now' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CFLAGS=-g -O2 -ffile-prefix-map=/build/smartmontools-7teSgE/smartmontools-7.2=. -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -fsigned-char -Wall'
Display help information.
$ smartctl --help
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org
Usage: smartctl [options] device
============================================ SHOW INFORMATION OPTIONS =====
-h, --help, --usage
Display this help and exit
-V, --version, --copyright, --license
Print license, copyright, and version information and exit
-i, --info
Show identity information for device
--identify[=[w][nvb]]
Show words and bits from IDENTIFY DEVICE data (ATA)
-g NAME, --get=NAME
Get device setting: all, aam, apm, dsn, lookahead, security,
wcache, rcache, wcreorder, wcache-sct
-a, --all
Show all SMART information for device
-x, --xall
Show all information for device
--scan
Scan for devices
--scan-open
Scan for devices and try to open each device
================================== SMARTCTL RUN-TIME BEHAVIOR OPTIONS =====
-j, --json[=cgiosuvy]
Print output in JSON or YAML format
-q TYPE, --quietmode=TYPE (ATA)
Set smartctl quiet mode to one of: errorsonly, silent, noserial
-d TYPE, --device=TYPE
Specify device type to one of:
ata, scsi[+TYPE], nvme[,NSID], sat[,auto][,N][+TYPE], usbcypress[,X], usbjmicron[,p][,x][,N], usbprolific, usbsunplus, sntjmicron[,NSID], sntrealtek, intelliprop,N[+TYPE], jmb39x[-q],N[,sLBA][,force][+TYPE], jms56x,N[,sLBA][,force][+TYPE], marvell, areca,N/E, 3ware,N, hpt,L/M/N, megaraid,N, aacraid,H,L,ID, cciss,N, auto, test
-T TYPE, --tolerance=TYPE (ATA)
Tolerance: normal, conservative, permissive, verypermissive
-b TYPE, --badsum=TYPE (ATA)
Set action on bad checksum to one of: warn, exit, ignore
-r TYPE, --report=TYPE
Report transactions (see man page)
-n MODE[,STATUS], --nocheck=MODE[,STATUS] (ATA, SCSI)
No check if: never, sleep, standby, idle (see man page)
============================== DEVICE FEATURE ENABLE/DISABLE COMMANDS =====
-s VALUE, --smart=VALUE
Enable/disable SMART on device (on/off)
-o VALUE, --offlineauto=VALUE (ATA)
Enable/disable automatic offline testing on device (on/off)
-S VALUE, --saveauto=VALUE (ATA)
Enable/disable Attribute autosave on device (on/off)
-s NAME[,VALUE], --set=NAME[,VALUE]
Enable/disable/change device setting: aam,[N|off], apm,[N|off],
dsn,[on|off], lookahead,[on|off], security-freeze,
standby,[N|off|now], wcache,[on|off], rcache,[on|off],
wcreorder,[on|off[,p]], wcache-sct,[ata|on|off[,p]]
======================================= READ AND DISPLAY DATA OPTIONS =====
-H, --health
Show device SMART health status
-c, --capabilities (ATA, NVMe)
Show device SMART capabilities
-A, --attributes
Show device SMART vendor-specific Attributes and values
-f FORMAT, --format=FORMAT (ATA)
Set output format for attributes: old, brief, hex[,id|val]
-l TYPE, --log=TYPE
Show device log. TYPE: error, selftest, selective, directory[,g|s],
xerror[,N][,error], xselftest[,N][,selftest], background,
sasphy[,reset], sataphy[,reset], scttemp[sts,hist],
scttempint,N[,p], scterc[,N,M], devstat[,N], defects[,N], ssd,
gplog,N[,RANGE], smartlog,N[,RANGE], nvmelog,N,SIZE
-v N,OPTION , --vendorattribute=N,OPTION (ATA)
Set display OPTION for vendor Attribute N (see man page)
-F TYPE, --firmwarebug=TYPE (ATA)
Use firmware bug workaround:
none, nologdir, samsung, samsung2, samsung3, xerrorlba, swapid
-P TYPE, --presets=TYPE (ATA)
Drive-specific presets: use, ignore, show, showall
-B [+]FILE, --drivedb=[+]FILE (ATA)
Read and replace [add] drive database from FILE
[default is +/etc/smart_drivedb.h
and then /var/lib/smartmontools/drivedb/drivedb.h]
============================================ DEVICE SELF-TEST OPTIONS =====
-t TEST, --test=TEST
Run test. TEST: offline, short, long, conveyance, force, vendor,N,
select,M-N, pending,N, afterselect,[on|off]
-C, --captive
Do test in captive mode (along with -t)
-X, --abort
Abort any non-captive test on device
=================================================== SMARTCTL EXAMPLES =====
smartctl --all /dev/sda (Prints all SMART information)
smartctl --smart=on --offlineauto=on --saveauto=on /dev/sda
(Enables SMART on first disk)
smartctl --test=long /dev/sda (Executes extended disk self-test)
smartctl --attributes --log=selftest --quietmode=errorsonly /dev/sda
(Prints Self-Test & Attribute errors)
smartctl --all --device=3ware,2 /dev/sda
smartctl --all --device=3ware,2 /dev/twe0
smartctl --all --device=3ware,2 /dev/twa0
smartctl --all --device=3ware,2 /dev/twl0
(Prints all SMART info for 3rd ATA disk on 3ware RAID controller)
smartctl --all --device=hpt,1/1/3 /dev/sda
(Prints all SMART info for the SATA disk attached to the 3rd PMPort
of the 1st channel on the 1st HighPoint RAID controller)
smartctl --all --device=areca,3/1 /dev/sg2
(Prints all SMART info for 3rd ATA disk of the 1st enclosure
on Areca RAID controller)
Display device identification data.
$ sudo smartctl --info /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Number: SAMSUNG MZVLB512HBJQ-000L7 Serial Number: S4ENNX0R210637 Firmware Version: 5M2QEXF7 PCI Vendor/Subsystem ID: 0x144d IEEE OUI Identifier: 0x002538 Total NVM Capacity: 512,110,190,592 [512 GB] Unallocated NVM Capacity: 0 Controller ID: 4 NVMe Version: 1.3 Number of Namespaces: 1 Namespace 1 Size/Capacity: 512,110,190,592 [512 GB] Namespace 1 Utilization: 34,063,511,552 [34.0 GB] Namespace 1 Formatted LBA Size: 512 Namespace 1 IEEE EUI-64: 002538 8211b67f9f Local Time is: Thu Jan 6 21:45:32 2022 CET
Display health status.
$ sudo smartctl --health /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED
Display generic SMART capabilities.
$ sudo smartctl --capabilities /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Firmware Updates (0x16): 3 Slots, no Reset required Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp Log Page Attributes (0x03): S/H_per_NS Cmd_Eff_Lg Maximum Data Transfer Size: 512 Pages Warning Comp. Temp. Threshold: 84 Celsius Critical Comp. Temp. Threshold: 85 Celsius Supported Power States St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat 0 + 8.00W - - 0 0 0 0 0 0 1 + 6.30W - - 1 1 1 1 0 0 2 + 3.50W - - 2 2 2 2 0 0 3 - 0.0760W - - 3 3 3 3 210 1200 4 - 0.0050W - - 4 4 4 4 2000 8000 Supported LBA Sizes (NSID 0x1) Id Fmt Data Metadt Rel_Perf 0 + 512 0 0
Display vendor specific SMART Attributes.
$ sudo smartctl --attributes /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF SMART DATA SECTION === SMART/Health Information (NVMe Log 0x02) Critical Warning: 0x00 Temperature: 32 Celsius Available Spare: 100% Available Spare Threshold: 10% Percentage Used: 0% Data Units Read: 77,639 [39.7 GB] Data Units Written: 184,980 [94.7 GB] Host Read Commands: 740,935 Host Write Commands: 1,388,541 Controller Busy Time: 7 Power Cycles: 40 Power On Hours: 11 Unsafe Shutdowns: 4 Media and Data Integrity Errors: 0 Error Information Log Entries: 98 Warning Comp. Temperature Time: 0 Critical Comp. Temperature Time: 0 Temperature Sensor 1: 32 Celsius Temperature Sensor 2: 29 Celsius
Display the summary SMART error log.
$ sudo smartctl --log error /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF SMART DATA SECTION === Error Information (NVMe Log 0x01, 16 of 64 entries) Num ErrCount SQId CmdId Status PELoc LBA NSID VS 0 98 0 0x1011 0x4004 - 0 0 -
Display all SMART information.
$ sudo smartctl --all /dev/nvme0n1
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.13.0-23-generic] (local build) Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Number: SAMSUNG MZVLB512HBJQ-000L7 Serial Number: S4ENNX0R210637 Firmware Version: 5M2QEXF7 PCI Vendor/Subsystem ID: 0x144d IEEE OUI Identifier: 0x002538 Total NVM Capacity: 512,110,190,592 [512 GB] Unallocated NVM Capacity: 0 Controller ID: 4 NVMe Version: 1.3 Number of Namespaces: 1 Namespace 1 Size/Capacity: 512,110,190,592 [512 GB] Namespace 1 Utilization: 34,063,503,360 [34.0 GB] Namespace 1 Formatted LBA Size: 512 Namespace 1 IEEE EUI-64: 002538 8211b67f9f Local Time is: Thu Jan 6 21:44:36 2022 CET Firmware Updates (0x16): 3 Slots, no Reset required Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp Log Page Attributes (0x03): S/H_per_NS Cmd_Eff_Lg Maximum Data Transfer Size: 512 Pages Warning Comp. Temp. Threshold: 84 Celsius Critical Comp. Temp. Threshold: 85 Celsius Supported Power States St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat 0 + 8.00W - - 0 0 0 0 0 0 1 + 6.30W - - 1 1 1 1 0 0 2 + 3.50W - - 2 2 2 2 0 0 3 - 0.0760W - - 3 3 3 3 210 1200 4 - 0.0050W - - 4 4 4 4 2000 8000 Supported LBA Sizes (NSID 0x1) Id Fmt Data Metadt Rel_Perf 0 + 512 0 0 === START OF SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED SMART/Health Information (NVMe Log 0x02) Critical Warning: 0x00 Temperature: 32 Celsius Available Spare: 100% Available Spare Threshold: 10% Percentage Used: 0% Data Units Read: 77,639 [39.7 GB] Data Units Written: 184,955 [94.6 GB] Host Read Commands: 740,935 Host Write Commands: 1,386,988 Controller Busy Time: 7 Power Cycles: 40 Power On Hours: 11 Unsafe Shutdowns: 4 Media and Data Integrity Errors: 0 Error Information Log Entries: 98 Warning Comp. Temperature Time: 0 Critical Comp. Temperature Time: 0 Temperature Sensor 1: 32 Celsius Temperature Sensor 2: 29 Celsius Error Information (NVMe Log 0x01, 16 of 64 entries) Num ErrCount SQId CmdId Status PELoc LBA NSID VS 0 98 0 0x1011 0x4004 - 0 0 -
Display all SMART information using JSON format.
$ sudo smartctl --json --all /dev/nvme0n1
{
"json_format_version": [
1,
0
],
"smartctl": {
"version": [
7,
2
],
"svn_revision": "5155",
"platform_info": "x86_64-linux-5.13.0-23-generic",
"build_info": "(local build)",
"argv": [
"smartctl",
"--json",
"--all",
"/dev/nvme0n1"
],
"exit_status": 0
},
"device": {
"name": "/dev/nvme0n1",
"info_name": "/dev/nvme0n1",
"type": "nvme",
"protocol": "NVMe"
},
"model_name": "SAMSUNG MZVLB512HBJQ-000L7",
"serial_number": "S4ENNX0R210637",
"firmware_version": "5M2QEXF7",
"nvme_pci_vendor": {
"id": 5197,
"subsystem_id": 5197
},
"nvme_ieee_oui_identifier": 9528,
"nvme_total_capacity": 512110190592,
"nvme_unallocated_capacity": 0,
"nvme_controller_id": 4,
"nvme_version": {
"string": "1.3",
"value": 66304
},
"nvme_number_of_namespaces": 1,
"nvme_namespaces": [
{
"id": 1,
"size": {
"blocks": 1000215216,
"bytes": 512110190592
},
"capacity": {
"blocks": 1000215216,
"bytes": 512110190592
},
"utilization": {
"blocks": 66530296,
"bytes": 34063511552
},
"formatted_lba_size": 512,
"eui64": {
"oui": 9528,
"ext_id": 558642921375
}
}
],
"user_capacity": {
"blocks": 1000215216,
"bytes": 512110190592
},
"logical_block_size": 512,
"local_time": {
"time_t": 1641502071,
"asctime": "Thu Jan 6 21:47:51 2022 CET"
},
"smart_status": {
"passed": true,
"nvme": {
"value": 0
}
},
"nvme_smart_health_information_log": {
"critical_warning": 0,
"temperature": 32,
"available_spare": 100,
"available_spare_threshold": 10,
"percentage_used": 0,
"data_units_read": 77639,
"data_units_written": 184969,
"host_reads": 740935,
"host_writes": 1387910,
"controller_busy_time": 7,
"power_cycles": 40,
"power_on_hours": 11,
"unsafe_shutdowns": 4,
"media_errors": 0,
"num_err_log_entries": 98,
"warning_temp_time": 0,
"critical_comp_time": 0,
"temperature_sensors": [
32,
29
]
},
"temperature": {
"current": 32
},
"power_cycle_count": 40,
"power_on_time": {
"hours": 11
}
}
NVMe storage command line interface utility
Install the NVMe storage command line interface utility.
$ sudo apt install nvme-cli
Display utility version.
$ sudo nvme version
nvme version 1.14
Display help information.
$ sudo nvme help
nvme-1.14 usage: nvme <command> [<device>] [<args>] The '<device>' may be either an NVMe character device (ex: /dev/nvme0) or an nvme block device (ex: /dev/nvme0n1). The following are all implemented sub-commands: list List all NVMe devices and namespaces on machine list-subsys List nvme subsystems id-ctrl Send NVMe Identify Controller id-ns Send NVMe Identify Namespace, display structure id-ns-granularity Send NVMe Identify Namespace Granularity List, display structure list-ns Send NVMe Identify List, display structure list-ctrl Send NVMe Identify Controller List, display structure nvm-id-ctrl Send NVMe Identify Controller NVM Command Set, display structure primary-ctrl-caps Send NVMe Identify Primary Controller Capabilities list-secondary List Secondary Controllers associated with a Primary Controller ns-descs Send NVMe Namespace Descriptor List, display structure id-nvmset Send NVMe Identify NVM Set List, display structure id-uuid Send NVMe Identify UUID List, display structure id-iocs Send NVMe Identify I/O Command Set, display structure create-ns Creates a namespace with the provided parameters delete-ns Deletes a namespace from the controller attach-ns Attaches a namespace to requested controller(s) detach-ns Detaches a namespace from requested controller(s) get-ns-id Retrieve the namespace ID of opened block device get-log Generic NVMe get log, returns log in raw format telemetry-log Retrieve FW Telemetry log write to file fw-log Retrieve FW Log, show it changed-ns-list-log Retrieve Changed Namespace List, show it smart-log Retrieve SMART Log, show it ana-log Retrieve ANA Log, show it error-log Retrieve Error Log, show it effects-log Retrieve Command Effects Log, show it endurance-log Retrieve Endurance Group Log, show it predictable-lat-log Retrieve Predictable Latency per Nvmset Log, show it pred-lat-event-agg-log Retrieve Predictable Latency Event Aggregate Log, show it persistent-event-log Retrieve Presistent Event Log, show it endurance-event-agg-log Retrieve Endurance Group Event Aggregate Log, show it lba-status-log Retrieve LBA Status Information Log, show it resv-notif-log Retrieve Reservation Notification Log, show it get-feature Get feature and show the resulting value device-self-test Perform the necessary tests to observe the performance self-test-log Retrieve the SELF-TEST Log, show it set-feature Set a feature and show the resulting value set-property Set a property and show the resulting value get-property Get a property and show the resulting value format Format namespace with new block format fw-commit Verify and commit firmware to a specific slot (fw-activate in old version < 1.2) fw-download Download new firmware admin-passthru Submit an arbitrary admin command, return results io-passthru Submit an arbitrary IO command, return results security-send Submit a Security Send command, return results security-recv Submit a Security Receive command, return results get-lba-status Submit a Get LBA Status command, return results resv-acquire Submit a Reservation Acquire, return results resv-register Submit a Reservation Register, return results resv-release Submit a Reservation Release, return results resv-report Submit a Reservation Report, return results dsm Submit a Data Set Management command, return results copy Submit a Simple Copy command, return results flush Submit a Flush command, return results compare Submit a Compare command, return results read Submit a read command, return results write Submit a write command, return results write-zeroes Submit a write zeroes command, return results write-uncor Submit a write uncorrectable command, return results verify Submit a verify command, return results sanitize Submit a sanitize command sanitize-log Retrieve sanitize log, show it reset Resets the controller subsystem-reset Resets the subsystem ns-rescan Rescans the NVME namespaces show-regs Shows the controller registers or properties. Requires character device discover Discover NVMeoF subsystems connect-all Discover and Connect to NVMeoF subsystems connect Connect to NVMeoF subsystem disconnect Disconnect from NVMeoF subsystem disconnect-all Disconnect from all connected NVMeoF subsystems gen-hostnqn Generate NVMeoF host NQN show-hostnqn Show NVMeoF host NQN dir-receive Submit a Directive Receive command, return results dir-send Submit a Directive Send command, return results virt-mgmt Manage Flexible Resources between Primary and Secondary Controller rpmb Replay Protection Memory Block commands version Shows the program version help Display this help See 'nvme help <command>' for more information on a specific command The following are all installed plugin extensions: ymtc Ymtc vendor specific extensions nvidia NVIDIA vendor specific extensions zns Zoned Namespace Command Set transcend Transcend vendor specific extensions sfx ScaleFlux vendor specific extensions dera Dera vendor specific extensions shannon Shannon vendor specific extensions virtium Virtium vendor specific extensions seagate Seagate vendor specific extensions micron Micron vendor specific extensions toshiba Toshiba NVME plugin netapp NetApp vendor specific extensions huawei Huawei vendor specific extensions wdc Western Digital vendor specific extensions memblaze Memblaze vendor specific extensions lnvm LightNVM specific extensions amzn Amazon vendor specific extensions intel Intel vendor specific extensions See 'nvme <plugin> help' for more information on a plugin
List every reconized NVMe device.
$ sudo nvme list --verbose
NVM Express Subsystems Subsystem Subsystem-NQN Controllers ---------------- ------------------------------------------------------------------------------------------------ ---------------- nvme-subsys0 nqn.2014.08.org.nvmexpress:144d144dS4ENNX0R210637 SAMSUNG MZVLB512HBJQ-000L7 nvme0 NVM Express Controllers Device SN MN FR TxPort Address Subsystem Namespaces -------- -------------------- ---------------------------------------- -------- ------ -------------- ------------ ---------------- nvme0 S4ENNX0R210637 SAMSUNG MZVLB512HBJQ-000L7 5M2QEXF7 pcie 0000:02:00.0 nvme-subsys0 nvme0n1 NVM Express Namespaces Device NSID Usage Format Controllers ------------ -------- -------------------------- ---------------- ---------------- nvme0n1 1 34.06 GB / 512.11 GB 512 B + 0 B nvme0
List every reconized NVMe device using JSON format.
$ sudo nvme list --verbose --output-format=json
{
"Devices" : [
{
"Subsystem" : "nvme-subsys0",
"SubsystemNQN" : "nqn.2014.08.org.nvmexpress:144d144dS4ENNX0R210637 SAMSUNG MZVLB512HBJQ-000L7 ",
"Controllers" : [
{
"Controller" : "nvme0",
"Transport" : "pcie",
"Address" : "0000:02:00.0",
"State" : "live",
"Firmware" : "5M2QEXF7",
"ModelNumber" : "SAMSUNG MZVLB512HBJQ-000L7",
"SerialNumber" : "S4ENNX0R210637",
"Namespaces" : [
{
"NameSpace" : "nvme0n1",
"NSID" : 1,
"UsedBytes" : 34066137088,
"MaximumLBA" : 1000215216,
"PhysicalSize" : 512110190592,
"SectorSize" : 512
}
]
}
]
}
]
}
Display results of the identify controller command.
$ sudo nvme id-ctrl --human-readable /dev/nvme0n1
NVME Identify Controller:
vid : 0x144d
ssvid : 0x144d
sn : S4ENNX0R210637
mn : SAMSUNG MZVLB512HBJQ-000L7
fr : 5M2QEXF7
rab : 2
ieee : 002538
cmic : 0
[3:3] : 0 ANA not supported
[2:2] : 0 PCI
[1:1] : 0 Single Controller
[0:0] : 0 Single Port
mdts : 9
cntlid : 0x4
ver : 0x10300
rtd3r : 0x30d40
rtd3e : 0x7a1200
oaes : 0
[27:27] : 0 Zone Descriptor Changed Notices Not Supported
[14:14] : 0 Endurance Group Event Aggregate Log Page Change Notice Not Supported
[13:13] : 0 LBA Status Information Notices Not Supported
[12:12] : 0 Predictable Latency Event Aggregate Log Change Notices Not Supported
[11:11] : 0 Asymmetric Namespace Access Change Notices Not Supported
[9:9] : 0 Firmware Activation Notices Not Supported
[8:8] : 0 Namespace Attribute Changed Event Not Supported
ctratt : 0
[9:9] : 0 UUID List Not Supported
[7:7] : 0 Namespace Granularity Not Supported
[5:5] : 0 Predictable Latency Mode Not Supported
[4:4] : 0 Endurance Groups Not Supported
[3:3] : 0 Read Recovery Levels Not Supported
[2:2] : 0 NVM Sets Not Supported
[1:1] : 0 Non-Operational Power State Permissive Not Supported
[0:0] : 0 128-bit Host Identifier Not Supported
rrls : 0
cntrltype : 0
[7:2] : 0 Reserved
[1:0] : 0 Controller type not reported
fguid :
crdt1 : 0
crdt2 : 0
crdt3 : 0
oacs : 0x17
[9:9] : 0 Get LBA Status Capability Not Supported
[8:8] : 0 Doorbell Buffer Config Not Supported
[7:7] : 0 Virtualization Management Not Supported
[6:6] : 0 NVMe-MI Send and Receive Not Supported
[5:5] : 0 Directives Not Supported
[4:4] : 0x1 Device Self-test Supported
[3:3] : 0 NS Management and Attachment Not Supported
[2:2] : 0x1 FW Commit and Download Supported
[1:1] : 0x1 Format NVM Supported
[0:0] : 0x1 Security Send and Receive Supported
acl : 7
aerl : 3
frmw : 0x16
[4:4] : 0x1 Firmware Activate Without Reset Supported
[3:1] : 0x3 Number of Firmware Slots
[0:0] : 0 Firmware Slot 1 Read/Write
lpa : 0x3
[4:4] : 0 Persistent Event log Not Supported
[3:3] : 0 Telemetry host/controller initiated log page Not Supported
[2:2] : 0 Extended data for Get Log Page Not Supported
[1:1] : 0x1 Command Effects Log Page Supported
[0:0] : 0x1 SMART/Health Log Page per NS Supported
elpe : 63
npss : 4
avscc : 0x1
[0:0] : 0x1 Admin Vendor Specific Commands uses NVMe Format
apsta : 0x1
[0:0] : 0x1 Autonomous Power State Transitions Supported
wctemp : 357
cctemp : 358
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 512110190592
unvmcap : 0
rpmbs : 0
[31:24]: 0 Access Size
[23:16]: 0 Total Size
[5:3] : 0 Authentication Method
[2:0] : 0 Number of RPMB Units
edstt : 35
dsto : 0
fwug : 0
kas : 0
hctma : 0x1
[0:0] : 0x1 Host Controlled Thermal Management Supported
mntmt : 321
mxtmt : 358
sanicap : 0x3
[31:30] : 0 Additional media modification after sanitize operation completes successfully is not defined
[29:29] : 0 No-Deallocate After Sanitize bit in Sanitize command Supported
[2:2] : 0 Overwrite Sanitize Operation Not Supported
[1:1] : 0x1 Block Erase Sanitize Operation Supported
[0:0] : 0x1 Crypto Erase Sanitize Operation Supported
hmminds : 0
hmmaxd : 0
nsetidmax : 0
endgidmax : 0
anatt : 0
anacap : 0
[7:7] : 0 Non-zero group ID Not Supported
[6:6] : 0 Group ID does not change
[4:4] : 0 ANA Change state Not Supported
[3:3] : 0 ANA Persistent Loss state Not Supported
[2:2] : 0 ANA Inaccessible state Not Supported
[1:1] : 0 ANA Non-optimized state Not Supported
[0:0] : 0 ANA Optimized state Not Supported
anagrpmax : 0
nanagrpid : 0
pels : 0
sqes : 0x66
[7:4] : 0x6 Max SQ Entry Size (64)
[3:0] : 0x6 Min SQ Entry Size (64)
cqes : 0x44
[7:4] : 0x4 Max CQ Entry Size (16)
[3:0] : 0x4 Min CQ Entry Size (16)
maxcmd : 0
nn : 1
oncs : 0x5f
[8:8] : 0 Copy Not Supported
[7:7] : 0 Verify Not Supported
[6:6] : 0x1 Timestamp Supported
[5:5] : 0 Reservations Not Supported
[4:4] : 0x1 Save and Select Supported
[3:3] : 0x1 Write Zeroes Supported
[2:2] : 0x1 Data Set Management Supported
[1:1] : 0x1 Write Uncorrectable Supported
[0:0] : 0x1 Compare Supported
fuses : 0
[0:0] : 0 Fused Compare and Write Not Supported
fna : 0x4
[2:2] : 0x1 Crypto Erase Supported as part of Secure Erase
[1:1] : 0 Crypto Erase Applies to Single Namespace(s)
[0:0] : 0 Format Applies to Single Namespace(s)
vwc : 0x1
[2:1] : 0 Support for the NSID field set to FFFFFFFFh is not indicated
[0:0] : 0x1 Volatile Write Cache Present
awun : 1023
awupf : 0
icsvscc : 1
[0:0] : 0x1 NVM Vendor Specific Commands uses NVMe Format
nwpc : 0
[2:2] : 0 Permanent Write Protect Not Supported
[1:1] : 0 Write Protect Until Power Supply Not Supported
[0:0] : 0 No Write Protect and Write Protect Namespace Not Supported
acwu : 0
sgls : 0
[1:0] : 0 Scatter-Gather Lists Not Supported
mnan : 0
subnqn :
ioccsz : 0
iorcsz : 0
icdoff : 0
fcatt : 0
[0:0] : 0 Dynamic Controller Model
msdbd : 0
ofcs : 0
[0:0] : 0 Disconnect command Not Supported
ps 0 : mp:8.00W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
ps 1 : mp:6.30W operational enlat:0 exlat:0 rrt:1 rrl:1
rwt:1 rwl:1 idle_power:- active_power:-
ps 2 : mp:3.50W operational enlat:0 exlat:0 rrt:2 rrl:2
rwt:2 rwl:2 idle_power:- active_power:-
ps 3 : mp:0.0760W non-operational enlat:210 exlat:1200 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:- active_power:-
ps 4 : mp:0.0050W non-operational enlat:2000 exlat:8000 rrt:4 rrl:4
rwt:4 rwl:4 idle_power:- active_power:-
Display results of the identify controller command using JSON format.
$ sudo nvme id-ctrl --human-readable --output-format json /dev/nvme0n1
{
"vid" : 5197,
"ssvid" : 5197,
"sn" : "S4ENNX0R210637 ",
"mn" : "SAMSUNG MZVLB512HBJQ-000L7 ",
"fr" : "5M2QEXF7",
"rab" : 2,
"ieee" : 9528,
"cmic" : 0,
"mdts" : 9,
"cntlid" : 4,
"ver" : 66304,
"rtd3r" : 200000,
"rtd3e" : 8000000,
"oaes" : 0,
"ctratt" : 0,
"rrls" : 0,
"crdt1" : 0,
"crdt2" : 0,
"crdt3" : 0,
"oacs" : 23,
"acl" : 7,
"aerl" : 3,
"frmw" : 22,
"lpa" : 3,
"elpe" : 63,
"npss" : 4,
"avscc" : 1,
"apsta" : 1,
"wctemp" : 357,
"cctemp" : 358,
"mtfa" : 0,
"hmpre" : 0,
"hmmin" : 0,
"tnvmcap" : 512110190592,
"unvmcap" : 0,
"rpmbs" : 0,
"edstt" : 35,
"dsto" : 0,
"fwug" : 0,
"kas" : 0,
"hctma" : 1,
"mntmt" : 321,
"mxtmt" : 358,
"sanicap" : 3,
"hmminds" : 0,
"hmmaxd" : 0,
"nsetidmax" : 0,
"anatt" : 0,
"anacap" : 0,
"anagrpmax" : 0,
"nanagrpid" : 0,
"sqes" : 102,
"cqes" : 68,
"maxcmd" : 0,
"nn" : 1,
"oncs" : 95,
"fuses" : 0,
"fna" : 4,
"vwc" : 1,
"awun" : 1023,
"awupf" : 0,
"icsvscc" : 1,
"nwpc" : 0,
"acwu" : 0,
"sgls" : 0,
"ioccsz" : 0,
"iorcsz" : 0,
"icdoff" : 0,
"fcatt" : 0,
"msdbd" : 0,
"ofcs" : 0,
"psds" : [
{
"max_power" : 800,
"flags" : 0,
"entry_lat" : 0,
"exit_lat" : 0,
"read_tput" : 0,
"read_lat" : 0,
"write_tput" : 0,
"write_lat" : 0,
"idle_power" : 0,
"idle_scale" : 0,
"active_power" : 0,
"active_work_scale" : 0
},
{
"max_power" : 630,
"flags" : 0,
"entry_lat" : 0,
"exit_lat" : 0,
"read_tput" : 1,
"read_lat" : 1,
"write_tput" : 1,
"write_lat" : 1,
"idle_power" : 0,
"idle_scale" : 0,
"active_power" : 0,
"active_work_scale" : 0
},
{
"max_power" : 350,
"flags" : 0,
"entry_lat" : 0,
"exit_lat" : 0,
"read_tput" : 2,
"read_lat" : 2,
"write_tput" : 2,
"write_lat" : 2,
"idle_power" : 0,
"idle_scale" : 0,
"active_power" : 0,
"active_work_scale" : 0
},
{
"max_power" : 760,
"flags" : 3,
"entry_lat" : 210,
"exit_lat" : 1200,
"read_tput" : 3,
"read_lat" : 3,
"write_tput" : 3,
"write_lat" : 3,
"idle_power" : 0,
"idle_scale" : 0,
"active_power" : 0,
"active_work_scale" : 0
},
{
"max_power" : 50,
"flags" : 3,
"entry_lat" : 2000,
"exit_lat" : 8000,
"read_tput" : 4,
"read_lat" : 4,
"write_tput" : 4,
"write_lat" : 4,
"idle_power" : 0,
"idle_scale" : 0,
"active_power" : 0,
"active_work_scale" : 0
}
]
}
Display results of the identify namespace command.
$ sudo nvme id-ns --human-readable /dev/nvme0n1
NVME Identify Namespace 1: nsze : 0x3b9e12b0 ncap : 0x3b9e12b0 nuse : 0x3f819d0 nsfeat : 0 [4:4] : 0 NPWG, NPWA, NPDG, NPDA, and NOWS are Not Supported [3:3] : 0 NGUID and EUI64 fields if non-zero, Reused [2:2] : 0 Deallocated or Unwritten Logical Block error Not Supported [1:1] : 0 Namespace uses AWUN, AWUPF, and ACWU [0:0] : 0 Thin Provisioning Not Supported nlbaf : 0 flbas : 0 [4:4] : 0 Metadata Transferred in Separate Contiguous Buffer [3:0] : 0 Current LBA Format Selected mc : 0 [1:1] : 0 Metadata Pointer Not Supported [0:0] : 0 Metadata as Part of Extended Data LBA Not Supported dpc : 0 [4:4] : 0 Protection Information Transferred as Last 8 Bytes of Metadata Not Supported [3:3] : 0 Protection Information Transferred as First 8 Bytes of Metadata Not Supported [2:2] : 0 Protection Information Type 3 Not Supported [1:1] : 0 Protection Information Type 2 Not Supported [0:0] : 0 Protection Information Type 1 Not Supported dps : 0 [3:3] : 0 Protection Information is Transferred as Last 8 Bytes of Metadata [2:0] : 0 Protection Information Disabled nmic : 0 [0:0] : 0 Namespace Multipath Not Capable rescap : 0 [7:7] : 0 Ignore Existing Key - Used as defined in revision 1.2.1 or earlier [6:6] : 0 Exclusive Access - All Registrants Not Supported [5:5] : 0 Write Exclusive - All Registrants Not Supported [4:4] : 0 Exclusive Access - Registrants Only Not Supported [3:3] : 0 Write Exclusive - Registrants Only Not Supported [2:2] : 0 Exclusive Access Not Supported [1:1] : 0 Write Exclusive Not Supported [0:0] : 0 Persist Through Power Loss Not Supported fpi : 0x80 [7:7] : 0x1 Format Progress Indicator Supported [6:0] : 0 Format Progress Indicator (Remaining 0%) dlfeat : 0 [4:4] : 0 Guard Field of Deallocated Logical Blocks is set to 0xFFFF [3:3] : 0 Deallocate Bit in the Write Zeroes Command is Not Supported [2:0] : 0 Bytes Read From a Deallocated Logical Block and its Metadata are Not Reported nawun : 0 nawupf : 0 nacwu : 0 nabsn : 0 nabo : 0 nabspf : 0 noiob : 0 nvmcap : 512110190592 mssrl : 0 mcl : 0 msrc : 0 anagrpid: 0 nsattr : 0 nvmsetid: 0 endgid : 0 nguid : 00000000000000000000000000000000 eui64 : 0025388211b67f9f LBA Format 0 : Metadata Size: 0 bytes - Data Size: 512 bytes - Relative Performance: 0 Best (in use)
Display results of the identify namespace command using JSON format.
$ sudo nvme id-ns --human-readable --output-format json /dev/nvme0n1
$ sudo nvme id-ns --human-readable --output-format json /dev/nvme0n1
{
"nsze" : 1000215216,
"ncap" : 1000215216,
"nuse" : 66591176,
"nsfeat" : 0,
"nlbaf" : 0,
"flbas" : 0,
"mc" : 0,
"dpc" : 0,
"dps" : 0,
"nmic" : 0,
"rescap" : 0,
"fpi" : 128,
"nawun" : 0,
"nawupf" : 0,
"nacwu" : 0,
"nabsn" : 0,
"nabo" : 0,
"nabspf" : 0,
"noiob" : 0,
"nvmcap" : 512110190592,
"nsattr" : 0,
"nvmsetid" : 0,
"mssrl" : 0,
"mcl" : 0,
"msrc" : 0,
"anagrpid" : 0,
"endgid" : 0,
"eui64" : "0025388211b67f9f",
"nguid" : "00000000000000000000000000000000",
"lbafs" : [
{
"ms" : 0,
"ds" : 9,
"rp" : 0
}
]
}
Display firmware log page in a human readable way.
$ sudo nvme fw-log /dev/nvme0n1
Firmware Log for device:nvme0n1 afi : 0x1 frs1 : 0x3746584551324d35 (5M2QEXF7)
Display firmware log page in a human readable way using JSON format.
$ sudo nvme fw-log --output-format json /dev/nvme0n1
{
"nvme0n1" : {
"Active Firmware Slot (afi)" : 1,
"Firmware Rev Slot 1" : "3982967975194021173 (5M2QEXF7)"
}
}
Display NVMe SMART log page in a human readable way using JSON format.
$ sudo nvme smart-log /dev/nvme0n1
$ sudo nvme smart-log /dev/nvme0n1 Smart Log for NVME device:nvme0n1 namespace-id:ffffffff critical_warning : 0 temperature : 34 C available_spare : 100% available_spare_threshold : 10% percentage_used : 0% endurance group critical warning summary: 0 data_units_read : 77922 data_units_written : 186499 host_read_commands : 742847 host_write_commands : 1443253 controller_busy_time : 7 power_cycles : 40 power_on_hours : 12 unsafe_shutdowns : 4 media_errors : 0 num_err_log_entries : 120 Warning Temperature Time : 0 Critical Composite Temperature Time : 0 Temperature Sensor 1 : 34 C Temperature Sensor 2 : 31 C Thermal Management T1 Trans Count : 0 Thermal Management T2 Trans Count : 0 Thermal Management T1 Total Time : 0 Thermal Management T2 Total Time : 0
Display NVMe SMART log page in a human readable way using JSON format.
$ sudo nvme smart-log --output-format json /dev/nvme0n1
{
"critical_warning" : 0,
"temperature" : 307,
"avail_spare" : 100,
"spare_thresh" : 10,
"percent_used" : 0,
"endurance_grp_critical_warning_summary" : 0,
"data_units_read" : 77922,
"data_units_written" : 186502,
"host_read_commands" : 742847,
"host_write_commands" : 1443428,
"controller_busy_time" : 7,
"power_cycles" : 40,
"power_on_hours" : 12,
"unsafe_shutdowns" : 4,
"media_errors" : 0,
"num_err_log_entries" : 120,
"warning_temp_time" : 0,
"critical_comp_time" : 0,
"temperature_sensor_1" : 307,
"temperature_sensor_2" : 303,
"thm_temp1_trans_count" : 0,
"thm_temp2_trans_count" : 0,
"thm_temp1_total_time" : 0,
"thm_temp2_total_time" : 0
}
Display last 3 entries from NVMe error log page in a human readable way.
$ sudo nvme error-log --log-entries 3 /dev/nvme0n1
Error Log Entries for device:nvme0n1 entries:3 ................. Entry[ 0] ................. error_count : 120 sqid : 0 cmdid : 0x4001 status_field : 0x200b(INVALID_NS: The namespace or the format of that namespace is invalid) phase_tag : 0 parm_err_loc : 0x4 lba : 0 nsid : 0xfffffffe vs : 0 trtype : The transport type is not indicated or the error is not transport related. cs : 0 trtype_spec_info: 0 ................. Entry[ 1] ................. error_count : 119 sqid : 0 cmdid : 0x7019 status_field : 0x200b(INVALID_NS: The namespace or the format of that namespace is invalid) phase_tag : 0 parm_err_loc : 0x4 lba : 0 nsid : 0xfffffffe vs : 0 trtype : The transport type is not indicated or the error is not transport related. cs : 0 trtype_spec_info: 0 ................. Entry[ 2] ................. error_count : 118 sqid : 0 cmdid : 0x1003 status_field : 0x2109(INVALID_LOG_PAGE: The log page indicated is invalid. This error condition is also returned if a reserved log page is requested) phase_tag : 0 parm_err_loc : 0x28 lba : 0 nsid : 0xffffffff vs : 0 trtype : The transport type is not indicated or the error is not transport related. cs : 0 trtype_spec_info: 0 .................
Display last 3 entries from NVMe error log page in a human readable way using JSON format.
$ sudo nvme error-log --log-entries 3 --output-format json /dev/nvme0n1
{
"errors" : [
{
"error_count" : 120,
"sqid" : 0,
"cmdid" : 16385,
"status_field" : 8203,
"phase_tag" : 0,
"parm_error_location" : 4,
"lba" : 0,
"nsid" : 4294967294,
"vs" : 0,
"trtype" : 0,
"cs" : 0,
"trtype_spec_info" : 0
},
{
"error_count" : 119,
"sqid" : 0,
"cmdid" : 28697,
"status_field" : 8203,
"phase_tag" : 0,
"parm_error_location" : 4,
"lba" : 0,
"nsid" : 4294967294,
"vs" : 0,
"trtype" : 0,
"cs" : 0,
"trtype_spec_info" : 0
},
{
"error_count" : 118,
"sqid" : 0,
"cmdid" : 4099,
"status_field" : 8457,
"phase_tag" : 0,
"parm_error_location" : 40,
"lba" : 0,
"nsid" : 4294967295,
"vs" : 0,
"trtype" : 0,
"cs" : 0,
"trtype_spec_info" : 0
}
]
}
Retrieve and display NVMe Command Effects log page using JSON format.
$ sudo nvme effects-log /dev/nvme0n1
Admin Command Set ACS0 [Delete I/O Submission Queue ] 00000001 ACS1 [Create I/O Submission Queue ] 00000001 ACS2 [Get Log Page ] 00000001 ACS4 [Delete I/O Completion Queue ] 00000001 ACS5 [Create I/O Completion Queue ] 00000001 ACS6 [Identify ] 00000001 ACS8 [Abort ] 00000001 ACS9 [Set Features ] 00000001 ACS10 [Get Features ] 00000001 ACS12 [Asynchronous Event Request ] 00000001 ACS16 [Firmware Commit ] 00000001 ACS17 [Firmware Image Download ] 00000001 ACS20 [Device Self-test ] 00000001 ACS128 [Format NVM ] 00020003 ACS129 [Security Send ] 00020003 ACS130 [Security Receive ] 00010001 ACS132 [Sanitize ] 00000003 NVM Command Set IOCS0 [Flush ] 00010001 IOCS1 [Write ] 00000003 IOCS2 [Read ] 00000001 IOCS4 [Write Uncorrectable ] 00000003 IOCS5 [Compare ] 00000001 IOCS8 [Write Zeroes ] 00000003 IOCS9 [Dataset Management ] 00010003
Retrieve and display NVMe Command Effects log page using JSON format.
$ sudo nvme effects-log --output-format json /dev/nvme0n1
{
"admin_cmd_set" : {
"ACS_0 (Delete I/O Submission Queue)" : 1,
"ACS_1 (Create I/O Submission Queue)" : 1,
"ACS_2 (Get Log Page)" : 1,
"ACS_4 (Delete I/O Completion Queue)" : 1,
"ACS_5 (Create I/O Completion Queue)" : 1,
"ACS_6 (Identify)" : 1,
"ACS_8 (Abort)" : 1,
"ACS_9 (Set Features)" : 1,
"ACS_10 (Get Features)" : 1,
"ACS_12 (Asynchronous Event Request)" : 1,
"ACS_16 (Firmware Commit)" : 1,
"ACS_17 (Firmware Image Download)" : 1,
"ACS_20 (Device Self-test)" : 1,
"ACS_128 (Format NVM)" : 131075,
"ACS_129 (Security Send)" : 131075,
"ACS_130 (Security Receive)" : 65537,
"ACS_132 (Sanitize)" : 3
},
"io_cmd_set" : {
"IOCS_0 (Flush)" : 65537,
"IOCS_1 (Write)" : 3,
"IOCS_2 (Read)" : 1,
"IOCS_4 (Write Uncorrectable)" : 3,
"IOCS_5 (Compare)" : 1,
"IOCS_8 (Write Zeroes)" : 3,
"IOCS_9 (Dataset Management)" : 65539
}
}
Start a device self test (1h short, 2h extended, eh vendor specific, fh abort).
$ sudo nvme device-self-test --self-test-code 1h /dev/nvme0n1
Short Device self-test started
Display current self test operations.
$ sudo nvme self-test-log --dst-entries 0 /dev/nvme0n1
Device Self Test Log for NVME device:nvme0n1 Current operation : 0x1 Current Completion : 90%
Display current self test operations using JSON format.
$ sudo nvme self-test-log --dst-entries 0 --output-format json /dev/nvme0n1
{
"Current Device Self-Test Operation" : 1,
"Current Device Self-Test Completion" : 90,
"List of Valid Reports" : [
]
}
Display latest entry in self test log using JSON format.
$ sudo nvme self-test-log --dst-entries 1 /dev/nvme0n1
Device Self Test Log for NVME device:nvme0n1 Current operation : 0 Current Completion : 0% Self Test Result[0]: Operation Result : 0 Self Test Code : 1 Valid Diagnostic Information : 0 Power on hours (POH) : 0xc Vendor Specific : 0 0
Display latest entry in self test log using JSON format.
$ sudo nvme self-test-log --dst-entries 1 --output-format json /dev/nvme0n1
{
"Current Device Self-Test Operation" : 0,
"Current Device Self-Test Completion" : 0,
"List of Valid Reports" : [
{
"Self test result" : 0,
"Self test code" : 1,
"Segment number" : 0,
"Valid Diagnostic Information" : 0,
"Power on hours" : 12,
"Vendor Specific" : 0
}
]
}