fail to create devdax namespace

[WenhaoYuan604]

I tried to create devdax mode namespace and encouned the same issues with https://github.com/pmem/ndctl/issues/39 and https://github.com/pmem/ndctl/issues/76.

The kernel version is 5.15.0.Steps are as belows:

[root@h3]:/dev# ipmctl show -region
SocketID | ISetID | PersistentMemoryType | Capacity | FreeCapacity | HealthState
0x0002 | 0x8194eeb885782444 | AppDirect | 252.000 GiB | 252.000 GiB | Healthy
0x0003 | 0x755eeeb8f6592444 | AppDirect | 252.000 GiB | 252.000 GiB | Healthy
root@h3:/dev# sudo ndctl create-namespace --mode=fsdax --size=120G --region=region0 --force
libndctl: ndctl_pfn_enable: pfn0.0: failed to enable
Error: namespace0.0: failed to enable

failed to create namespace: No such device or address.

Kernel align are as belows:
root@h3:/dev# cat /proc/iomem
00000000-00000fff : Reserved
00001000-0009bfff : System RAM
0009c000-0009ffff : Reserved
000a0000-000bffff : PCI Bus 0000:00
000c0000-000c7fff : Video ROM
000c4000-000c7fff : PCI Bus 0000:00
000c8000-000c8dff : Adapter ROM
000e0000-000fffff : Reserved
000f0000-000fffff : System ROM
00100000-5e5fefff : System RAM
5e5ff000-6d7fefff : Reserved
6828a020-6828a06f : APEI ERST
6828a078-6828a07f : APEI ERST
6828a080-6828c01f : APEI ERST
6d7ff000-6f7fefff : ACPI Non-volatile Storage
6f7ff000-6fffefff : ACPI Tables
6ffff000-6fffffff : System RAM
70000000-8fffffff : Reserved
80000000-8fffffff : PCI MMCONFIG 0000 [bus 00-ff]
90000000-96bfffff : PCI Bus 0000:00
91000000-91ffffff : PCI Bus 0000:02
91000000-91ffffff : PCI Bus 0000:03
91000000-91ffffff : 0000:03:00.0
92000000-928fffff : PCI Bus 0000:02
92000000-928fffff : PCI Bus 0000:03
92000000-927fffff : 0000:03:00.0
92808000-9280bfff : 0000:03:00.0
92900000-92bfffff : PCI Bus 0000:01
92900000-929fffff : 0000:01:00.1
92900000-929fffff : igb
92a00000-92afffff : 0000:01:00.0
92a00000-92afffff : igb
92b00000-92b03fff : 0000:01:00.1
92b00000-92b03fff : igb
92b04000-92b07fff : 0000:01:00.0
92b04000-92b07fff : igb
92b80000-92bfffff : 0000:01:00.0
92c00000-92c7ffff : 0000:00:17.0
92c00000-92c7ffff : ahci
92c80000-92cfffff : 0000:00:11.5
92c80000-92cfffff : ahci
92d00000-92d0ffff : 0000:00:14.0
92d00000-92d0ffff : xhci-hcd
92d10000-92d13fff : 0000:00:04.7
92d14000-92d17fff : 0000:00:04.6
92d18000-92d1bfff : 0000:00:04.5
92d1c000-92d1ffff : 0000:00:04.4
92d20000-92d23fff : 0000:00:04.3
92d24000-92d27fff : 0000:00:04.2
92d28000-92d2bfff : 0000:00:04.1
92d2c000-92d2ffff : 0000:00:04.0
92d30000-92d33fff : 0000:00:1f.2
92d34000-92d35fff : 0000:00:17.0
92d34000-92d35fff : ahci
92d36000-92d37fff : 0000:00:11.5
92d36000-92d37fff : ahci
92d38000-92d380ff : 0000:00:1f.4
92d39000-92d39fff : 0000:00:16.4
92d3a000-92d3afff : 0000:00:16.1
92d3b000-92d3bfff : 0000:00:16.0
92d3c000-92d3cfff : 0000:00:14.2
92d3e000-92d3e0ff : 0000:00:17.0
92d3e000-92d3e0ff : ahci
92d3f000-92d3f0ff : 0000:00:11.5
92d3f000-92d3f0ff : ahci
92d40000-92d40fff : 0000:00:05.4
96bfc000-96bfcfff : dmar15
96c00000-9d7fffff : PCI Bus 0000:16
96c00000-96cfffff : PCI Bus 0000:17
96c00000-96c7ffff : 0000:17:00.0
96c80000-96cfffff : 0000:17:00.1
97000000-990fffff : PCI Bus 0000:17
97000000-97ffffff : 0000:17:00.1
97000000-97ffffff : i40e
98000000-98ffffff : 0000:17:00.0
98000000-98ffffff : i40e
99000000-99007fff : 0000:17:00.1
99000000-99007fff : i40e
99008000-9900ffff : 0000:17:00.0
99008000-9900ffff : i40e
99100000-99100fff : 0000:16:05.4
9d7fc000-9d7fcfff : dmar12
9d800000-a43fffff : PCI Bus 0000:24
9d800000-9d8fffff : PCI Bus 0000:25
9d800000-9d803fff : 0000:25:00.0
9d800000-9d803fff : nvme
9d810000-9d81ffff : 0000:25:00.0
9d900000-9d900fff : 0000:24:05.4
a43fc000-a43fcfff : dmar13
a4400000-aaffffff : PCI Bus 0000:32
a4400000-a45fffff : PCI Bus 0000:33
a4400000-a44fffff : 0000:33:00.0
a4500000-a45fffff : 0000:33:00.1
a6000000-a9ffffff : PCI Bus 0000:33
a6000000-a7ffffff : 0000:33:00.1
a6000000-a7ffffff : mlx5_core
a8000000-a9ffffff : 0000:33:00.0
a8000000-a9ffffff : mlx5_core
aa000000-aa000fff : 0000:32:05.4
aaffc000-aaffcfff : dmar14
ab000000-b1bfffff : PCI Bus 0000:40
ab000000-ab003fff : 0000:40:04.7
ab004000-ab007fff : 0000:40:04.6
ab008000-ab00bfff : 0000:40:04.5
ab00c000-ab00ffff : 0000:40:04.4
ab010000-ab013fff : 0000:40:04.3
ab014000-ab017fff : 0000:40:04.2
ab018000-ab01bfff : 0000:40:04.1
ab01c000-ab01ffff : 0000:40:04.0
ab020000-ab020fff : 0000:40:05.4
b1bfc000-b1bfcfff : dmar0
b1c00000-b87fffff : PCI Bus 0000:47
b1c00000-b1c00fff : 0000:47:05.4
b87fc000-b87fcfff : dmar1
b8800000-bf3fffff : PCI Bus 0000:5a
b8800000-b88fffff : PCI Bus 0000:5c
b8800000-b8803fff : 0000:5c:00.0
b8800000-b8803fff : nvme
b8810000-b881ffff : 0000:5c:00.0
b8900000-b89fffff : PCI Bus 0000:5b
b8900000-b89fffff : 0000:5b:00.2
b8a00000-b8a00fff : 0000:5a:05.4
bf3fc000-bf3fcfff : dmar2
bf400000-c5ffffff : PCI Bus 0000:6d
bf400000-bf400fff : 0000:6d:05.4
c5ffc000-c5ffcfff : dmar3
c6000000-ccbfffff : PCI Bus 0000:80
c6000000-c6003fff : 0000:80:04.7
c6004000-c6007fff : 0000:80:04.6
c6008000-c600bfff : 0000:80:04.5
c600c000-c600ffff : 0000:80:04.4
c6010000-c6013fff : 0000:80:04.3
c6014000-c6017fff : 0000:80:04.2
c6018000-c601bfff : 0000:80:04.1
c601c000-c601ffff : 0000:80:04.0
c6020000-c6020fff : 0000:80:05.4
ccbfc000-ccbfcfff : dmar4
ccc00000-d37fffff : PCI Bus 0000:87
ccc00000-ccc00fff : 0000:87:05.4
d37fc000-d37fcfff : dmar5
d3800000-da3fffff : PCI Bus 0000:9a
d3800000-d38fffff : PCI Bus 0000:9c
d3800000-d3807fff : 0000:9c:00.0
d3800000-d3807fff : nvme
d3820000-d383ffff : 0000:9c:00.0
d3900000-d39fffff : PCI Bus 0000:9b
d3900000-d3907fff : 0000:9b:00.0
d3900000-d3907fff : nvme
d3920000-d393ffff : 0000:9b:00.0
d3a00000-d3a00fff : 0000:9a:05.4
da3fc000-da3fcfff : dmar6
da400000-e0ffffff : PCI Bus 0000:ad
da400000-da400fff : 0000:ad:05.4
e0ffc000-e0ffcfff : dmar7
e1000000-e7bfffff : PCI Bus 0000:c0
e1000000-e1003fff : 0000:c0:04.7
e1004000-e1007fff : 0000:c0:04.6
e1008000-e100bfff : 0000:c0:04.5
e100c000-e100ffff : 0000:c0:04.4
e1010000-e1013fff : 0000:c0:04.3
e1014000-e1017fff : 0000:c0:04.2
e1018000-e101bfff : 0000:c0:04.1
e101c000-e101ffff : 0000:c0:04.0
e1020000-e1020fff : 0000:c0:05.4
e7bfc000-e7bfcfff : dmar8
e7c00000-ee7fffff : PCI Bus 0000:c7
e7c00000-e7efffff : PCI Bus 0000:c8
e7c00000-e7cfffff : 0000:c8:00.1
e7d00000-e7dfffff : 0000:c8:00.0
e7e00000-e7e0ffff : 0000:c8:00.1
e7e10000-e7e1ffff : 0000:c8:00.0
e7e20000-e7e21fff : 0000:c8:00.1
e7e22000-e7e23fff : 0000:c8:00.0
e7f00000-e7f00fff : 0000:c7:05.4
e8000000-e80fffff : PCI Bus 0000:c8
e8000000-e807ffff : 0000:c8:00.0
e8080000-e80fffff : 0000:c8:00.1
ee7fc000-ee7fcfff : dmar9
ee800000-f53fffff : PCI Bus 0000:da
ee800000-ee9fffff : PCI Bus 0000:db
ee800000-ee8fffff : 0000:db:00.0
ee800000-ee8fffff : megasas: LSI
ee900000-ee9fffff : 0000:db:00.0
eea00000-eeafffff : PCI Bus 0000:db
eea00000-eeafffff : 0000:db:00.0
eeb00000-eeb00fff : 0000:da:05.4
f53fc000-f53fcfff : dmar10
f5400000-fbffffff : PCI Bus 0000:ed
f5400000-f5400fff : 0000:ed:05.4
fbffc000-fbffcfff : dmar11
fd000000-fe7fffff : Reserved
fd000000-fdabffff : pnp 00:04
fdad0000-fdadffff : pnp 00:04
fdb00000-fdffffff : pnp 00:04
fe000000-fe00ffff : pnp 00:04
fe010000-fe010fff : PCI Bus 0000:00
fe010000-fe010fff : 0000:00:1f.5
fe011000-fe01ffff : pnp 00:04
fe036000-fe03bfff : pnp 00:04
fe03d000-fe3fffff : pnp 00:04
fe410000-fe7fffff : pnp 00:04
fec00000-fed00fff : Reserved
fec00000-fecfffff : PNP0003:00
fec00000-fec00fff : Reserved
fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec08000-fec083ff : IOAPIC 2
fec10000-fec103ff : IOAPIC 3
fec18000-fec183ff : IOAPIC 4
fec20000-fec203ff : IOAPIC 5
fec28000-fec283ff : IOAPIC 6
fec30000-fec303ff : IOAPIC 7
fec38000-fec383ff : IOAPIC 8
fec40000-fec403ff : IOAPIC 9
fec48000-fec483ff : IOAPIC 10
fec50000-fec503ff : IOAPIC 11
fec58000-fec583ff : IOAPIC 12
fec60000-fec603ff : IOAPIC 13
fec68000-fec683ff : IOAPIC 14
fec70000-fec703ff : IOAPIC 15
fec78000-fec783ff : IOAPIC 16
fed00000-fed003ff : HPET 0
fed00000-fed003ff : PNP0103:00
fed12000-fed1200f : pnp 00:01
fed12010-fed1201f : pnp 00:01
fed1b000-fed1bfff : pnp 00:01
fed1c000-fed3ffff : pnp 00:01
fed40000-fed44fff : Reserved
fed45000-fed8bfff : pnp 00:01
fee00000-feefffff : pnp 00:01
ff000000-ffffffff : Reserved
ff000000-ffffffff : pnp 00:01
100000000-406fffffff : System RAM
2f84800000-2f858026c1 : Kernel code
2f85a00000-2f86499fff : Kernel rodata
2f86600000-2f86a4983f : Kernel data
2f86db7000-2f87ffffff : Kernel bss
4070000000-7f6fffffff : Persistent Memory
7f70000000-876fffffff : System RAM
8770000000-c66fffffff : Persistent Memory
c670000000-c68fffffff : Reserved
380000000000-380fffffffff : PCI Bus 0000:00
381000000000-381fffffffff : PCI Bus 0000:16
382000000000-382fffffffff : PCI Bus 0000:24
383000000000-383fffffffff : PCI Bus 0000:32
384000000000-384fffffffff : PCI Bus 0000:40
385000000000-385fffffffff : PCI Bus 0000:47
386000000000-386fffffffff : PCI Bus 0000:5a
386ffa000000-386ffe3fffff : PCI Bus 0000:5b
386ffa000000-386ffbffffff : 0000:5b:00.1
386ffa000000-386ffbffffff : mlx5_core
386ffc000000-386ffdffffff : 0000:5b:00.0
386ffc000000-386ffdffffff : mlx5_core
386ffe000000-386ffe1fffff : 0000:5b:00.1
386ffe000000-386ffe1fffff : mlx5_core
386ffe200000-386ffe3fffff : 0000:5b:00.0
386ffe200000-386ffe3fffff : mlx5_core
387000000000-387fffffffff : PCI Bus 0000:6d
388000000000-388fffffffff : PCI Bus 0000:80
389000000000-389fffffffff : PCI Bus 0000:87
38a000000000-38afffffffff : PCI Bus 0000:9a
38b000000000-38bfffffffff : PCI Bus 0000:ad
38c000000000-38cfffffffff : PCI Bus 0000:c0
38d000000000-38dfffffffff : PCI Bus 0000:c7
38e000000000-38efffffffff : PCI Bus 0000:da
38f000000000-38ffffffffff : PCI Bus 0000:ed

I've tried to add params "--align=2M" "--align=4K" "--align=1G" .It doesn't work.

Could you help me with it?

[sscargal]

@WenhaoYuan604 Here are a few next steps to collect more information that should help with the triage of your issue.

• What is the history of the Optane PMem devices? Have you successfully used them in the past?
  • If you're unsure of the history, try performing a factory reset or sanitization operation to remove any lingering configurations that may be stored on the PMem modules themselves. See How to Securely Erase Data on Intel® Optane™ Persistent Memory. Depending on your Server OEM BIOS, you may find an option in the BIOS to factory reset the modules and remove the config (LSA). Note: This operation may put the PMem modules back to the default Memory Mode, which is a good starting point. You can configure the PMem modules back to AppDirect from the BIOS, or better yet, from the OS.
• Please add --verbose to the create-namepace command, ie:
  • sudo ndctl create-namespace --mode=fsdax --size=120G --region=region0 --force --verbose
• Check dmesg for additional messages during boot and/or create-namespace times
• Clone and run my pmemchk utility to check the system for known issues
  • git clone https://github.com/sscargal/pmemchk && cd pmemchk
  • sudo ./pmemchk
  • Post the results, especially if there are any FAILED or WARNING issues identified
• Check your BIOS options and settings to see if any conflicting settings/configurations that prevent you from configuring and managing the Optane PMem in the OS.

[zym1599]

i encountered the same problem

[sscargal]

@zym1599, can you provide the information from my previous response, please?

[WenhaoYuan604]

@sscargal Thanks for your reply.

I have successfully created namespace on the Optane Pmem devices with kernel 5.4.0. For software needs, I upgraded the kernel to 5.15.0 and this problem occurs.

I successfully sanitized PM from the BIOS and recreated two regions. Errors were still encountered when creating the namespace

root@h3:/home/why/prism_2/prism# sudo ndctl create-namespace --mode=fsdax --size=120G --region=region0 --force --verbose
libndctl: ndctl_pfn_enable: pfn0.0: failed to enable
  Error: namespace0.0: failed to enable

failed to create namespace: No such device or address

After run sudo ./pmemchk，get two errors and some infos as follws

  [ INFO     ] linux_check_full_file_systems : / is '80%' full.
  [ INFO     ] linux_check_full_file_systems : /snap/bare/5 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/buzz/362 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/snapd/24718 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core/17210 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core/17212 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core18/2887 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core20/2582 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/lxd/29619 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/snapd/24505 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/gtk2-common-themes/13 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core22/2010 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/gtk-common-themes/1535 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/lxd/32662 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core18/2855 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/buzz/284 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core20/2599 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/jwt-decode/3 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core22/1981 is '100%' full. This may impact performance!
[ FAILED   ] linux_check_full_file_systems : One or more file systems are >=95% full. See previous errors.`
......
[ INFO     ] optane_check_masterpassphraseenabled : Master Passphrase is Disabled
......
[ INFO     ] optane_check_dimm_memoryboostfeature : Memory Bandwidth Boot Feature is Disabled
......
[ INFO     ] optane_check_dimm_ppc_extended_adr_enabled : One or more PMem modules have PpcExtendedAdrEnabled=False (Disabled)
......
 [ INFO     ] optane_check_dimm_overwrite_status : 1 Overwrite Status found:
 [ INFO     ] optane_check_dimm_overwrite_status : Unknown = 0x2020,0x2011,0x3110,0x3120
......
  [ INFO     ] optane_check_dimm_lockstate : Multiple (1) PMem LockStates found!
  [ INFO     ] optane_check_dimm_lockstate : Disabled, Frozen = 0x2020,0x2011,0x3110,0x3120
[ FAILED   ] optane_check_dimm_lockstate : One or more PMem modules reported an unexpected LockState status. See previous errors.

The full output are as follows:

root@h3:/home/why/pmemchk# sudo ./pmemchk 
=======================================================================
Starting PMem Checker
pmemchk Version 0.1.0
Started: Mon 30 Jun 2025 03:56:08 PM CST
=======================================================================
Operating System: Ubuntu 20.04.6 LTS
Kernel Version : 5.15.0-100-generic
CPU(s):                             160
Socket(s):                          4
NUMA node(s):                       4
Model name:                         Intel(R) Xeon(R) Gold 6248 CPU @ 2.50GHz
NUMA node0 CPU(s):                  0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,140,144,148,152,156
NUMA node1 CPU(s):                  1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61,65,69,73,77,81,85,89,93,97,101,105,109,113,117,121,125,129,133,137,141,145,149,153,157
NUMA node2 CPU(s):                  2,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,66,70,74,78,82,86,90,94,98,102,106,110,114,118,122,126,130,134,138,142,146,150,154,158
NUMA node3 CPU(s):                  3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143,147,151,155,159
Using NDCTL command: /usr/bin/ndctl
NDCTL version: 72.1+
Using IPMCTL command: /usr/bin/ipmctl
IPMCTL version: 02.00.00.3709
Using DAXCTL command: /usr/bin/daxctl
DAXCTL version: 72.1+
Using CXL command: /usr/bin/cxl
CXL version: 72.1+
=======================================================================
Starting data collector
=======================================================================
Running CXL Collector
100% (3 of 3)  [====================] 
Collecting files
100% (5 of 5)  [====================] 
Collecting command outputs
100% (10 of 10)  [====================] 
Running NDCTL Collector
100% (8 of 8)  [====================] 
Running IPMCTL Collector
100% (32 of 32)  [====================] 
Post-Processing Collected Data
100% (5 of 5)  [====================] 
Running DAXCTL Collector
100% (5 of 5)  [====================] 
=======================================================================
Data collector completed
=======================================================================
=======================================================================
Starting analysis of the data
=======================================================================
[ PASSED   ] linux_check_memmap : No 'memmap' entries found in the Linux boot command line (/proc/cmdline)
  [ INFO     ] linux_check_full_file_systems : / is '80%' full.
  [ INFO     ] linux_check_full_file_systems : /snap/bare/5 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/buzz/362 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/snapd/24718 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core/17210 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core/17212 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core18/2887 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core20/2582 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/lxd/29619 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/snapd/24505 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/gtk2-common-themes/13 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core22/2010 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/gtk-common-themes/1535 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/lxd/32662 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core18/2855 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/buzz/284 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core20/2599 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/jwt-decode/3 is '100%' full. This may impact performance!
  [ INFO     ] linux_check_full_file_systems : /snap/core22/1981 is '100%' full. This may impact performance!
[ FAILED   ] linux_check_full_file_systems : One or more file systems are >=95% full. See previous errors.
[ PASSED   ] optane_check_dimm_packagesparesavailable : All PMem modules have 1 PackageSparesAvailable
[ PASSED   ] optane_check_dimm_software_triggers_enabled_details : All PMem modules have software trigger disabled
[ INFO     ] optane_check_masterpassphraseenabled : Master Passphrase is Disabled
[ PASSED   ] optane_check_dimm_population : Detected 4 PMem modules. Population looks good.
[ PASSED   ] optane_check_dimm_error_injection_enabled : All PMem modules have error injection disabled
[ PASSED   ] optane_check_dimm_viral_state : All PMem modules are not ViralState == 0
[ PASSED   ] optane_check_dimm_configurationstatus : All PMem module ConfigurationStatus is 'Valid'
[ PASSED   ] optane_check_dimm_poision_error_injection_and_clear_counter : All PMem modules have equal PosionErrorInjectionCounter and PoisionErrorCounter
[ PASSED   ] optane_check_dimm_fwupdatestatus : All PMem modules have no staged Firmware Update
[ PASSED   ] optane_check_region_capacity : All Regions have the same Capacity
[ PASSED   ] optane_check_dimm_reservedcapacity : No PMem modules have ReservedCapacity configured
[ PASSED   ] optane_check_dimm_percentage_remaining : All PMem Modules have 100% life remaining
[ PASSED   ] optane_check_region_persistentmemorytype : All Regions have the same PersistentMemoryType configuration
[ PASSED   ] optane_check_dimm_arsstatus : All PMem module ARSStatus is Completed
[ PASSED   ] optane_check_dimm_show_goal : There are no pending goals
[ PASSED   ] optane_check_dimm_extended_adr_enabled : All PMem modules have ExtendedAdrEnabled switch disabled
[ PASSED   ] optane_check_dimm_manageabilitystate : One or more PMem modules reported ManageabilityState as Unmanageable
[ PASSED   ] optane_check_dimm_viral_policy : All PMem modules have Viral Policy disabled
[ PASSED   ] optane_check_region_health : All Regions are Healthy
[ PASSED   ] optane_check_dimm_fw_error_count : All PMem Modules have less than 10 FWError Counts
[ PASSED   ] optane_check_media_temperature_injection_enabled : All PMem modules have thier MediaTemperature Injection Disabled
[ PASSED   ] optane_check_region_freecapacity : All Regions have the same FreeCapacity
[ PASSED   ] optane_check_cpu_is_supported : CPU Model '6248' supports Intel Optane Persistent Memory Modules.
[ INFO     ] optane_check_dimm_memoryboostfeature : Memory Bandwidth Boot Feature is Disabled
[ PASSED   ] optane_check_dimm_health_status : All PMem Modules are Healthy
[ PASSED   ] optane_check_dimm_software_trigger_counter : All PMem modules have Software Trigger Counter == 0
[ PASSED   ] optane_check_dimm_ait_dram_enabled : One or more PMem modules have AitDramEnabled=False (Disabled)
[ PASSED   ] optane_check_dimm_packagesparingcapable : All PMem modules have PackageSparingCapable = True
[ PASSED   ] optane_check_dimm_thermalthrottlelosspercent : All PMem modules have zero ThermalThrottleLossPercent events
[ INFO     ] optane_check_dimm_ppc_extended_adr_enabled : One or more PMem modules have PpcExtendedAdrEnabled=False (Disabled)
[ PASSED   ] optane_check_dimm_partnumber : All PMem modules have the same Part Number
[ PASSED   ] optane_check_dimm_boot_status : All PMem modules have successful BootStatus
[ PASSED   ] optane_check_dimm_media_temperature_injections_count : All PMem modules have 0 Media Temperature Injection Counter
[ PASSED   ] optane_check_dimm_skuviolation : No PMem modules reported a SKU Violation
  [ INFO     ] optane_check_dimm_overwrite_status : 1 Overwrite Status found:
  [ INFO     ] optane_check_dimm_overwrite_status : Unknown = 0x2020,0x2011,0x3110,0x3120
[ PASSED   ] optane_check_dimm_overwrite_status : All PMem modules have Overwrite Status == 'Unknown
[ PASSED   ] optane_check_dimm_capacity : All PMem Modules have the same capacity.
[ PASSED   ] optane_check_dimm_firmware_version : All PMem Modules have the same firmware.
[ PASSED   ] optane_check_dimm_packagesparingenabled : All PMem modules have PackageSparingEnabled = True
  [ INFO     ] optane_check_dimm_lockstate : Multiple (1) PMem LockStates found!
  [ INFO     ] optane_check_dimm_lockstate : Disabled, Frozen = 0x2020,0x2011,0x3110,0x3120
[ FAILED   ] optane_check_dimm_lockstate : One or more PMem modules reported an unexpected LockState status. See previous errors.
=======================================================================
Data analysis completed
=======================================================================
=======================================================================
Analysis Report Summary
=======================================================================
[ PASSED   ] = 36
[ FAILED   ] = 2
[ SKIPPED  ] = 0
[ INFO     ] = 3
[ WARNING  ] = 0
[ CRITICAL ] = 0
[ UNKNOWN  ] = 0
=======================================================================
PMem Checker Complete
Ended: Mon 30 Jun 2025 03:56:19 PM CST
Duration: 11 seconds
Results: ./pmemchk.h3.0630-1556
Logfile: ./pmemchk.h3.0630-1556/pmemchk.log
=======================================================================

[WenhaoYuan604]

When the system starts up, there is the following prompt:

UEFI0351: The NUDIMMs on socket 03 are installed in an unsupported(configuration)maner. Major Error code 79 Minor Error code 15.Data in thePersistent Memory (PM)region may not be accessible .For more information about creating a PM region, see the platform Installat ionand Seruice Manual auailable on the support site .

UEFI0351: The NUDIMMs on socket 04 are installed in an unsupported(configuration)manner. Major Error code 79 Minor Error code 15.Data in thePersistent Memory (PM)region may not be accessible .For more information about creating a PM region, see the platform InstallationSeruice Manual auailable on the support site 

Is it because I installed PM in the wrong slot?

[sscargal]

Thanks a lot @WenhaoYuan604 .

Per the UEFI message, I recommend relocating the PMem modules to the correct DIMM slots. 0x2020,0x2011,0x3110,0x3120 is not what I expect. 0x2011 is the odd one out in that list, though it could be the only DIMM in the correct slot. PMem often ended in 1.

This is causing the optane_check_dimm_lockstate test to fail:

  [ INFO     ] optane_check_dimm_lockstate : Multiple (1) PMem LockStates found!
  [ INFO     ] optane_check_dimm_lockstate : Disabled, Frozen = 0x2020,0x2011,0x3110,0x3120
[ FAILED   ] optane_check_dimm_lockstate : One or more PMem modules reported an unexpected LockState status. See previous errors.

Run sudo ipmctl show -dimm and ipmctl show -topology to show the current DIMM population. Please refer to your server manual to see which slots the DDR and PMem should be installed in. The DDR slots are commonly color-coded (black and blue). Depending on your server, you need only DDR in the black slots and PMem only in the blue slots (or vice-versa). You shouldn't have both DDR and PMem in the black and blue slots.

Here's an example from a fully populated system. Note the symmetry of the Device Locator and DimmID:

$ ipmctl show -topology

 DimmID | MemoryType                  | Capacity  | PhysicalID| DeviceLocator
==============================================================================
 0x0001 | Logical Non-Volatile Device | 126.3 GiB | 0x0028    | CPU1_DIMM_A2
 0x0011 | Logical Non-Volatile Device | 126.3 GiB | 0x002c    | CPU1_DIMM_B2
 0x0021 | Logical Non-Volatile Device | 126.3 GiB | 0x0030    | CPU1_DIMM_C2
 0x0101 | Logical Non-Volatile Device | 126.3 GiB | 0x0036    | CPU1_DIMM_D2
 0x0111 | Logical Non-Volatile Device | 126.3 GiB | 0x003a    | CPU1_DIMM_E2
 0x0121 | Logical Non-Volatile Device | 126.3 GiB | 0x003e    | CPU1_DIMM_F2
 0x1001 | Logical Non-Volatile Device | 126.3 GiB | 0x0044    | CPU2_DIMM_A2
 0x1011 | Logical Non-Volatile Device | 126.3 GiB | 0x0048    | CPU2_DIMM_B2
 0x1021 | Logical Non-Volatile Device | 126.3 GiB | 0x004c    | CPU2_DIMM_C2
 0x1101 | Logical Non-Volatile Device | 126.3 GiB | 0x0052    | CPU2_DIMM_D2
 0x1111 | Logical Non-Volatile Device | 126.3 GiB | 0x0056    | CPU2_DIMM_E2
 0x1121 | Logical Non-Volatile Device | 126.3 GiB | 0x005a    | CPU2_DIMM_F2
 N/A    | DDR4                        | 16.0 GiB  | 0x0026    | CPU1_DIMM_A1
 N/A    | DDR4                        | 16.0 GiB  | 0x002a    | CPU1_DIMM_B1
 N/A    | DDR4                        | 16.0 GiB  | 0x002e    | CPU1_DIMM_C1
 N/A    | DDR4                        | 16.0 GiB  | 0x0034    | CPU1_DIMM_D1
 N/A    | DDR4                        | 16.0 GiB  | 0x0038    | CPU1_DIMM_E1
 N/A    | DDR4                        | 16.0 GiB  | 0x003c    | CPU1_DIMM_F1
 N/A    | DDR4                        | 16.0 GiB  | 0x0042    | CPU2_DIMM_A1
 N/A    | DDR4                        | 16.0 GiB  | 0x0046    | CPU2_DIMM_B1
 N/A    | DDR4                        | 16.0 GiB  | 0x004a    | CPU2_DIMM_C1
 N/A    | DDR4                        | 16.0 GiB  | 0x0050    | CPU2_DIMM_D1
 N/A    | DDR4                        | 16.0 GiB  | 0x0054    | CPU2_DIMM_E1
 N/A    | DDR4                        | 16.0 GiB  | 0x0058    | CPU2_DIMM_F1