wikiIntel VROC (VMD NVMe RAID) unter Linux
In diesem Artikel zeigen wir, wie Informationen zu einem konfigurierten RAID 1 eines Intel VROC (VMD NVMe RAID)s unter Ubuntu 20.04 mittels mdadm abgefragt werden können. Das RAID wurde in diesem Beispiel im BIOS eines Servers mit Intel Ice Lake CPU eingerichtet.
lspci
Die folgenden Ausgaben zeigen Informationen von lspci:
admin@ubuntu-20-04:~$ lspci -nn | grep -i raid 0000:97:00.5 RAID bus controller [0104]: Intel Corporation Volume Management Device NVMe RAID Controller [8086:28c0] (rev 04) 0000:e2:00.5 RAID bus controller [0104]: Intel Corporation Volume Management Device NVMe RAID Controller [8086:28c0] (rev 04)
admin@ubuntu-20-04:~$ lspci -nn | grep Non-Volatile 10000:01:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 [144d:a808] 10000:03:00.0 Non-Volatile memory controller [0108]: Device [1db2:2302] (rev 03) 10000:04:00.0 Non-Volatile memory controller [0108]: Device [1db2:2302] (rev 03)
admin@ubuntu-20-04:~$ sudo lspci -s 0000:97:00.5 -vvv -nn
0000:97:00.5 RAID bus controller [0104]: Intel Corporation Volume Management Device NVMe RAID Controller [8086:28c0] (rev 04)
Subsystem: Intel Corporation Volume Management Device NVMe RAID Controller [8086:0000]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
NUMA node: 1
Region 0: Memory at 206ffc000000 (64-bit, prefetchable) [size=32M]
Region 2: Memory at d8000000 (32-bit, non-prefetchable) [size=32M]
Region 4: Memory at 206ffff00000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [80] MSI-X: Enable+ Count=64 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00001000
Capabilities: [90] Express (v2) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0
ExtTag- RBE- FLReset-
DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-, NROPrPrP-, LTR-
10BitTagComp-, 10BitTagReq-, OBFF Not Supported, ExtFmt-, EETLPPrefix-
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
AtomicOpsCtl: ReqEn-
Capabilities: [e0] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: vmd
Kernel modules: vmd
admin@ubuntu-20-04:~$ sudo lspci -s 0000:e2:00.5 -vvv -nn
0000:e2:00.5 RAID bus controller [0104]: Intel Corporation Volume Management Device NVMe RAID Controller [8086:28c0] (rev 04)
Subsystem: Intel Corporation Volume Management Device NVMe RAID Controller [8086:0000]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
NUMA node: 1
Region 0: Memory at 209ffc000000 (64-bit, prefetchable) [size=32M]
Region 2: Memory at f8000000 (32-bit, non-prefetchable) [size=32M]
Region 4: Memory at 209ffff00000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [80] MSI-X: Enable+ Count=64 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00001000
Capabilities: [90] Express (v2) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0
ExtTag- RBE- FLReset-
DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-, NROPrPrP-, LTR-
10BitTagComp-, 10BitTagReq-, OBFF Not Supported, ExtFmt-, EETLPPrefix-
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
AtomicOpsCtl: ReqEn-
Capabilities: [e0] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: vmd
Kernel modules: vmd
md
Die folgenden Ausgaben zeigen mdadm und /proc/mdstat:
mdadm --detail-platform
admin@ubuntu-20-04:~$ sudo mdadm --detail-platform
mdadm: imsm capabilities not found for controller: /sys/devices/pci0000:00/0000:00:17.0 (type SATA)
mdadm: imsm capabilities not found for controller: /sys/devices/pci0000:00/0000:00:11.5 (type SATA)
Platform : Intel(R) Virtual RAID on CPU
Version : 7.6.0.1012
RAID Levels : raid0 raid1 raid10 raid5
Chunk Sizes : 4k 8k 16k 32k 64k 128k
2TB volumes : supported
2TB disks : supported
Max Disks : 48
Max Volumes : 2 per array, 24 per controller
3rd party NVMe : supported
I/O Controller : /sys/devices/pci0000:97/0000:97:00.5 (VMD)
NVMe under VMD : /sys/devices/pci0000:97/0000:97:00.5/pci10000:00/10000:00:04.0/10000:03:00.0
NVMe under VMD : /sys/devices/pci0000:97/0000:97:00.5/pci10000:00/10000:00:02.0/10000:01:00.0
NVMe under VMD : /sys/devices/pci0000:97/0000:97:00.5/pci10000:00/10000:00:05.0/10000:04:00.0
I/O Controller : /sys/devices/pci0000:e2/0000:e2:00.5 (VMD)
mdadm -D
admin@ubuntu-20-04:~$ sudo mdadm -D /dev/md/Volume0_0
/dev/md/Volume0_0:
Container : /dev/md/imsm0, member 0
Raid Level : raid1
Array Size : 111357952 (106.20 GiB 114.03 GB)
Used Dev Size : 111357952 (106.20 GiB 114.03 GB)
Raid Devices : 2
Total Devices : 2
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Consistency Policy : resync
UUID : 32026e61:d472715e:b654d740:30e648f4
Number Major Minor RaidDevice State
1 259 1 0 active sync /dev/nvme1n1
0 259 0 1 active sync /dev/nvme2n1
admin@ubuntu-20-04:~$ sudo mdadm -D /dev/md/imsm0
/dev/md/imsm0:
Version : imsm
Raid Level : container
Total Devices : 2
Working Devices : 2
UUID : c0ea71b0:9c041a79:c15f4eb8:dfc49403
Member Arrays : /dev/md/Volume0_0
Number Major Minor RaidDevice
- 259 0 - /dev/nvme2n1
- 259 1 - /dev/nvme1n1
cat /proc/mdstat
admin@ubuntu-20-04:~$ cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md126 : active raid1 nvme1n1[1] nvme2n1[0]
111357952 blocks super external:/md127/0 [2/2] [UU]
md127 : inactive nvme2n1[1](S) nvme1n1[0](S)
10402 blocks super external:imsm
unused devices: <none>
Weitere Informationen
- Intel Virtual RAID oc CPU (Intel VROC) - Linux Software User Guide (www.intel.com, June 2020)
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Autor: Werner Fischer Werner Fischer arbeitet im Product Management Team von Thomas-Krenn. Er evaluiert dabei neueste Technologien und teilt sein Wissen in Fachartikeln, bei Konferenzen und im Thomas-Krenn Wiki. Bereits 2005 - ein Jahr nach seinem Abschluss des Studiums zu Computer- und Mediensicherheit an der FH Hagenberg - heuerte er beim bayerischen Server-Hersteller an. Als Öffi-Fan nutzt er gerne Bus & Bahn und genießt seinen morgendlichen Spaziergang ins Büro.
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