Open3
NVMe-oFのお勉強
Hiroyuki SatoUse a file to emulate nvme device を実行しただけ。
環境
- OS: AlmaLinux 8
- RPM
- nvmetcli-0.7-3.el8.noarch
- nvme-cli-1.16-5.el8.x86_64
準備
ダミーのディスクを作る
mkdir /var/nvmetest
dd if=/dev/zero of=/var/nvmetest/nvmedisk1 bs=1GB count=1
1+0 records in
1+0 records out
1000000000 bytes (1.0 GB, 954 MiB) copied, 0.323693 s, 3.1 GB/s
losetup
作成したディスクを /dev/loop0 にアタッチする
losetup /dev/loop0 /var/nvmetest/nvmedisk1
確認
losetup
NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC
/dev/loop0 0 0 0 0 /var/nvmetest/nvmedisk1 0 512
nvme関連のモジュールをカーネルに追加する
modprobe nvme_loop
modprobe nvmet
modprove nvme_fabrics
確認
lsmod | grep nvme
nvme_loop 20480 0
nvmet 114688 1 nvme_loop
nvme_fabrics 24576 1 nvme_loop
nvme 45056 4
nvme_core 139264 8 nvme,nvme_loop,nvme_fabrics
t10_pi 16384 2 nvmet,nvme_core
設定ファイルを用意する。
{
"hosts": [
{
"nqn": "hostnqn"
}
],
"ports": [
{
"addr": {
"adrfam": "",
"traddr": "",
"treq": "not specified",
"trsvcid": "",
"trtype": "loop"
},
"portid": 1,
"referrals": [],
"subsystems": [
"testnqn"
]
}
],
"subsystems": [
{
"allowed_hosts": [
"hostnqn"
],
"attr": {
"allow_any_host": "0"
},
"namespaces": [
{
"device": {
"nguid": "7ee38388-53be-4cc7-82b1-3c797896e876",
"path": "/dev/loop0"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "testnqn"
}
]
}
設定のロード
nvmetcli restore /tmp/nvme.json
確認
dmesg | tail
[1327458.905933] nvmet: adding nsid 1 to subsystem testnqn
NVMe-oF実行前の確認
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 953.7M 0 loop
nvme0n1 259:0 0 1.8T 0 disk
|-nvme0n1p1 259:1 0 200M 0 part /boot/efi
|-nvme0n1p2 259:2 0 1G 0 part /boot
|-nvme0n1p3 259:3 0 8G 0 part [SWAP]
`-nvme0n1p4 259:4 0 1.8T 0 part /
loopデバイスの、NVMeディスクを接続する。
nvme connect -t loop -n testnqn -q hostnqn
確認 nvme1n1 が見える
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 953.7M 0 loop
nvme0n1 259:0 0 1.8T 0 disk
|-nvme0n1p1 259:1 0 200M 0 part /boot/efi
|-nvme0n1p2 259:2 0 1G 0 part /boot
|-nvme0n1p3 259:3 0 8G 0 part [SWAP]
`-nvme0n1p4 259:4 0 1.8T 0 part /
nvme1n1 259:5 0 953.7M 0 disk
パーティションの作成
parted /dev/nvme1n1
GNU Parted 3.2
Using /dev/nvme1n1
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Error: /dev/nvme1n1: unrecognised disk label
Model: NVMe Device (nvme)
Disk /dev/nvme1n1: 1000MB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:
(parted) mklabel
New disk label type? gpt
(parted) mkpart
Partition name? []?
File system type? [ext2]? xfs
Start? 0%
End? 100%
(parted) p
Model: NVMe Device (nvme)
Disk /dev/nvme1n1: 1000MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 999MB 998MB xfs
(parted) quit
Information: You may need to update /etc/fstab.
確認
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 953.7M 0 loop
nvme0n1 259:0 0 1.8T 0 disk
|-nvme0n1p1 259:1 0 200M 0 part /boot/efi
|-nvme0n1p2 259:2 0 1G 0 part /boot
|-nvme0n1p3 259:3 0 8G 0 part [SWAP]
`-nvme0n1p4 259:4 0 1.8T 0 part /
nvme1n1 259:5 0 953.7M 0 disk
`-nvme1n1p1 259:7 0 952M 0 part
ファイルシステムの作成
mkfs.xfs /dev/nvme1n1p1
meta-data=/dev/nvme1n1p1 isize=512 agcount=4, agsize=60928 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1 bigtime=0 inobtcount=0
data = bsize=4096 blocks=243712, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=1566, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Discarding blocks...Done.
つづく
Hiroyuki Sato
nvmetcli と nvme コマンド
nvmetcli
nvmetcli help
syntax: /usr/sbin/nvmetcli save [file_to_save_to]
/usr/sbin/nvmetcli restore [file_to_restore_from]
/usr/sbin/nvmetcli clear
/usr/sbin/nvmetcli ls
nvme
nvme
nvme-1.16
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
cmdset-ind-id-ns I/O Command Set Independent Identify Namespace
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
id-domain Send NVMe Identify Domain List, display structure
list-endgrp Send NVMe Identify Endurance Group List, 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
boot-part-log Retrieve Boot Partition 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
supported-log-pages Retrieve the Supported Log pages details, 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
capacity-mgmt Submit Capacity Management 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
fid-support-effects-log Submit Feature ID Support and Effects Log, Return result
lockdown Submit a Lockdown command,return result
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:
intel Intel vendor specific extensions
amzn Amazon vendor specific extensions
lnvm LightNVM specific extensions
memblaze Memblaze vendor specific extensions
wdc Western Digital vendor specific extensions
huawei Huawei vendor specific extensions
netapp NetApp vendor specific extensions
toshiba Toshiba NVME plugin
micron Micron vendor specific extensions
seagate Seagate vendor specific extensions
virtium Virtium vendor specific extensions
shannon Shannon vendor specific extensions
dera Dera vendor specific extensions
sfx ScaleFlux vendor specific extensions
transcend Transcend vendor specific extensions
zns Zoned Namespace Command Set
nvidia NVIDIA vendor specific extensions
ymtc Ymtc vendor specific extensions
See 'nvme <plugin> help' for more information on a plugin
コマンドを動かしてみる(その1)
nvme list
nvme list
Node SN Model Namespace Usage Format FW Rev
--------------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme0n1 1 0.00 B / 0.00 B 1 B + 0 B
/dev/nvme1n1 1 0.00 B / 0.00 B 1 B + 0 B
nvme list-subsys
nvme list-subsys
nvme-subsys0 - NQN=nqn.2018-01.com.wdc:nguid:21393D35-F200-4D61-9A21-46ED3B84A226(dummy)
\
+- nvme0 pcie 0000:01:00.0 live
nvme-subsys1 - NQN=testnqn
\
+- nvme1 loop live
nvme id-ctrl (要: root権限)
nvme id-ctrl /dev/nvme1n1
NVME Identify Controller:
vid : 0
ssvid : 0
sn : dab33544bd7d67a07729
mn : Linux
fr : 4.18.0-4
rab : 6
ieee : 000000
cmic : 0xb
mdts : 0
cntlid : 0x1
ver : 0x10300
rtd3r : 0
rtd3e : 0
oaes : 0x900
ctratt : 0x41
rrls : 0
cntrltype : 0
fguid :
crdt1 : 0
crdt2 : 0
crdt3 : 0
nvmsr : 0
vwci : 0
mec : 0
oacs : 0
acl : 3
aerl : 3
frmw : 0x3
lpa : 0x7
elpe : 127
npss : 0
avscc : 0
apsta : 0
wctemp : 0
cctemp : 0
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 0
unvmcap : 0
rpmbs : 0
edstt : 0
dsto : 0
fwug : 0
kas : 10
hctma : 0
mntmt : 0
mxtmt : 0
sanicap : 0
hmminds : 0
hmmaxd : 0
nsetidmax : 0
endgidmax : 0
anatt : 10
anacap : 31
anagrpmax : 128
nanagrpid : 128
pels : 0
domainid : 0
megcap : 0
sqes : 0x66
cqes : 0x44
maxcmd : 1024
nn : 1024
oncs : 0xc
fuses : 0
fna : 0
vwc : 0x1
awun : 0
awupf : 0
icsvscc : 0
nwpc : 1
acwu : 0
ocfs : 0
sgls : 0x1
mnan : 1024
maxdna : 0
maxcna : 0
subnqn : testnqn
ioccsz : 4
iorcsz : 1
icdoff : 0
fcatt : 0
msdbd : 0
ofcs : 0
ps 0 : mp:25.00W operational enlat:16 exlat:4 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
jsonでも出せる
nvme id-ctrl /dev/nvme1n1 -o json
{
"vid" : 0,
"ssvid" : 0,
"sn" : "dab33544bd7d67a07729",
"mn" : "Linux ",
"fr" : "4.18.0-4",
"rab" : 6,
"ieee" : 0,
"cmic" : 11,
"mdts" : 0,
"cntlid" : 1,
"ver" : 66304,
"rtd3r" : 0,
"rtd3e" : 0,
"oaes" : 2304,
"ctratt" : 65,
"rrls" : 0,
"crdt1" : 0,
"crdt2" : 0,
"crdt3" : 0,
"nvmsr" : 0,
"vwci" : 0,
"mec" : 0,
"oacs" : 0,
"acl" : 3,
"aerl" : 3,
"frmw" : 3,
"lpa" : 7,
"elpe" : 127,
"npss" : 0,
"avscc" : 0,
"apsta" : 0,
"wctemp" : 0,
"cctemp" : 0,
"mtfa" : 0,
"hmpre" : 0,
"hmmin" : 0,
"tnvmcap" : 0,
"unvmcap" : 0,
"rpmbs" : 0,
"edstt" : 0,
"dsto" : 0,
"fwug" : 0,
"kas" : 10,
"hctma" : 0,
"mntmt" : 0,
"mxtmt" : 0,
"sanicap" : 0,
"hmminds" : 0,
"hmmaxd" : 0,
"nsetidmax" : 0,
"anatt" : 10,
"anacap" : 31,
"anagrpmax" : 128,
"nanagrpid" : 128,
"domainid" : 0,
"megcap" : 0,
"sqes" : 102,
"cqes" : 68,
"maxcmd" : 1024,
"nn" : 1024,
"oncs" : 12,
"fuses" : 0,
"fna" : 0,
"vwc" : 1,
"awun" : 0,
"awupf" : 0,
"icsvscc" : 0,
"nwpc" : 1,
"acwu" : 0,
"ocfs" : 0,
"sgls" : 1,
"maxdna" : 0,
"maxcna" : 0,
"subnqn" : "testnqn",
"ioccsz" : 4,
"iorcsz" : 1,
"icdoff" : 0,
"fcatt" : 0,
"msdbd" : 0,
"ofcs" : 0,
"psds" : [
{
"max_power" : 2500,
"flags" : 0,
"entry_lat" : 16,
"exit_lat" : 4,
"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
}
]
}
nvme id-ns (要: root権限)
nvme id-ns /dev/nvme1n1
NVME Identify Namespace 1:
nsze : 0x1dcd65
ncap : 0x1dcd65
nuse : 0x1dcd65
nsfeat : 0x12
nlbaf : 0
flbas : 0
mc : 0
dpc : 0
dps : 0
nmic : 0x1
rescap : 0
fpi : 0
dlfeat : 0
nawun : 0
nawupf : 0
nacwu : 0
nabsn : 0
nabo : 0
nabspf : 0
noiob : 0
nvmcap : 0
npwg : 0
npwa : 0
npdg : 7
npda : 7
nows : 0
mssrl : 0
mcl : 0
msrc : 0
anagrpid: 1
nsattr : 0
nvmsetid: 0
endgid : 0
nguid : 7ee3838853be4cc782b13c797896e876
eui64 : 0000000000000000
lbaf 0 : ms:0 lbads:9 rp:0 (in use)
人間が読む時には、-Hオプションをつける
nvme id-ctrl /dev/nvme1n1 -H
NVME Identify Controller:
vid : 0
ssvid : 0
sn : dab33544bd7d67a07729
mn : Linux
fr : 4.18.0-4
rab : 6
ieee : 000000
cmic : 0xb
[3:3] : 0x1 ANA supported
[2:2] : 0 PCI
[1:1] : 0x1 Multi Controller
[0:0] : 0x1 Multi Port
mdts : 0
cntlid : 0x1
ver : 0x10300
rtd3r : 0
rtd3e : 0
oaes : 0x900
[31:31] : 0 Discovery Log Change Notice Not Supported
[27:27] : 0 Zone Descriptor Changed Notices Not Supported
[15:15] : 0 Normal NSS Shutdown Event 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] : 0x1 Asymmetric Namespace Access Change Notices Supported
[9:9] : 0 Firmware Activation Notices Not Supported
[8:8] : 0x1 Namespace Attribute Changed Event Supported
ctratt : 0x41
[15:15] : 0 Extended LBA Formats Not Supported
[14:14] : 0 Delete NVM Set Not Supported
[13:13] : 0 Delete Endurance Group Not Supported
[12:12] : 0 Variable Capacity Management Not Supported
[11:11] : 0 Fixed Capacity Management Not Supported
[10:10] : 0 Multi Domain Subsystem Not Supported
[9:9] : 0 UUID List Not Supported
[7:7] : 0 Namespace Granularity Not Supported
[6:6] : 0x1 Reserved
[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] : 0x1 128-bit Host Identifier Supported
rrls : 0
cntrltype : 0
[7:2] : 0 Reserved
[1:0] : 0 Controller type not reported
fguid :
crdt1 : 0
crdt2 : 0
crdt3 : 0
nvmsr : 0
[1:1] : 0 NVM subsystem Not part of an Enclosure
[0:0] : 0 NVM subsystem Not part of an Storage Device
vwci : 0
[7:7] : 0 VPD Write Cycles Remaining field is Not valid.
[6:0] : 0 VPD Write Cycles Remaining
mec : 0
[1:1] : 0 NVM subsystem Not contains a Management Endpoint on a PCIe port
[0:0] : 0 NVM subsystem Not contains a Management Endpoint on an SMBus/I2C port
oacs : 0
[10:10] : 0 Lockdown Command and Feature Not Supported
[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] : 0 Device Self-test Not Supported
[3:3] : 0 NS Management and Attachment Not Supported
[2:2] : 0 FW Commit and Download Not Supported
[1:1] : 0 Format NVM Not Supported
[0:0] : 0 Security Send and Receive Not Supported
acl : 3
aerl : 3
frmw : 0x3
[5:5] : 0 Multiple FW or Boot Update Detection Not Supported
[4:4] : 0 Firmware Activate Without Reset Not Supported
[3:1] : 0x1 Number of Firmware Slots
[0:0] : 0x1 Firmware Slot 1 Read-Only
lpa : 0x7
[6:6] : 0 Telemetry Log Data Area 4 Not Supported
[5:5] : 0 LID 0x0, Scope of each command in LID 0x5, 0x12, 0x13 Not Supported
[4:4] : 0 Persistent Event log Not Supported
[3:3] : 0 Telemetry host/controller initiated log page Not Supported
[2:2] : 0x1 Extended data for Get Log Page Supported
[1:1] : 0x1 Command Effects Log Page Supported
[0:0] : 0x1 SMART/Health Log Page per NS Supported
elpe : 127
npss : 0
avscc : 0
[0:0] : 0 Admin Vendor Specific Commands uses Vendor Specific Format
apsta : 0
[0:0] : 0 Autonomous Power State Transitions Not Supported
wctemp : 0
[16:0] : -273 C (0 Kelvin) Warning temperature (WCTEMP)
cctemp : 0
[16:0] : -273 C (0 Kelvin) Critical temperature (CCTEMP)
mtfa : 0
hmpre : 0
hmmin : 0
tnvmcap : 0
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 : 0
dsto : 0
fwug : 0
kas : 10
hctma : 0
[0:0] : 0 Host Controlled Thermal Management Not Supported
mntmt : 0
mxtmt : 0
sanicap : 0
[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] : 0 Block Erase Sanitize Operation Not Supported
[0:0] : 0 Crypto Erase Sanitize Operation Not Supported
hmminds : 0
hmmaxd : 0
nsetidmax : 0
endgidmax : 0
anatt : 10
anacap : 31
[7:7] : 0 Non-zero group ID Not Supported
[6:6] : 0 Group ID does not change
[4:4] : 0x1 ANA Change state Supported
[3:3] : 0x1 ANA Persistent Loss state Supported
[2:2] : 0x1 ANA Inaccessible state Supported
[1:1] : 0x1 ANA Non-optimized state Supported
[0:0] : 0x1 ANA Optimized state Supported
anagrpmax : 128
nanagrpid : 128
pels : 0
domainid : 0
megcap : 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 : 1024
nn : 1024
oncs : 0xc
[8:8] : 0 Copy Not Supported
[7:7] : 0 Verify Not Supported
[6:6] : 0 Timestamp Not Supported
[5:5] : 0 Reservations Not Supported
[4:4] : 0 Save and Select Not Supported
[3:3] : 0x1 Write Zeroes Supported
[2:2] : 0x1 Data Set Management Supported
[1:1] : 0 Write Uncorrectable Not Supported
[0:0] : 0 Compare Not Supported
fuses : 0
[0:0] : 0 Fused Compare and Write Not Supported
fna : 0
[3:3] : 0 FormatNVM Broadcast NSID (FFFFFFFFh) Supported
[2:2] : 0 Crypto Erase Not 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 : 0
awupf : 0
icsvscc : 0
[0:0] : 0 NVM Vendor Specific Commands uses Vendor Specific Format
nwpc : 1
[2:2] : 0 Permanent Write Protect Not Supported
[1:1] : 0 Write Protect Until Power Supply Not Supported
[0:0] : 0x1 No Write Protect and Write Protect Namespace Supported
acwu : 0
ocfs : 0
[1:1] : 0 Controller Copy Format 1h Not Supported
[0:0] : 0 Controller Copy Format 0h Not Supported
sgls : 0x1
[21:21]: 0 Transport SGL Data Block Descriptor Not Supported
[20:20]: 0 Address Offsets Not Supported
[19:19]: 0 Metadata Pointer Containing SGL Descriptor is Not Supported
[18:18]: 0 SGL Length Larger than Buffer Not Supported
[17:17]: 0 Byte-Aligned Contig. MD Buffer Not Supported
[16:16]: 0 SGL Bit-Bucket Not Supported
[15:8] : 0 SGL Descriptor Threshold
[2:2] : 0 Keyed SGL Data Block descriptor Not Supported
[1:0] : 0x1 Scatter-Gather Lists Supported. No Dword alignment required.
mnan : 1024
maxdna : 0
maxcna : 0
subnqn : testnqn
ioccsz : 4
iorcsz : 1
icdoff : 0
fcatt : 0
[0:0] : 0 Dynamic Controller Model
msdbd : 0
ofcs : 0
[0:0] : 0 Disconnect command Not Supported
ps 0 : mp:25.00W operational enlat:16 exlat:4 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:- active_power:-
nvme list-ctrl
nvme list-ctrl /dev/nvme1n1
NVMe status: INVALID_FIELD: A reserved coded value or an unsupported value in a defined field(0x6002)