Dell EMC VxFlex Ready Node Operating System Installation Manual page 70

Additional configurations
{
"dev":"namespace1.0",
"mode":"devdax",
"map":"dev",
"size":16909336576,
"uuid":"7d905ce0-49ed-42ba-8ad3-3981eb434f4d",
"numa_node":1
},
{
"dev":"namespace0.0",
"mode":"devdax",
"map":"dev",
"size":16909336576,
"uuid":"47165786-f91f-4d33-86bd-6d80aa3141f1",
"numa_node":0
}
]
8. In the output displayed in the previous step, locate the namespace that correlates with the NMEM name and
DIMM serial number, and record it in the NVDIMM information table.
In the above example, nmem0's namespace is namespace0.0.
9. Convert the namespace device to the acceleration device name of type /dev/daxX.X:
ndctl create-namespace -f -e namespaceX.X –-mode=devdax –align=4K
For ndctl build 62 or later, run:
ndctl create-namespace -f -e namespaceX.X -–mode=devdax –align=4K --no-autolabel
where namespace
For example, to convert namespace0.0 to /dev/dax0.0, where /dev/daxX.X is the acceleration device name,
depending on the ndctl build run:
Note: --no-autolabel is only relevant for RHEL 7.6.
ndctl create-namespace -f -e namespace0.0 –mode=dax –align=4K
or
ndctl create-namespace -f -e namespace0.0 –mode=dax –align=4K --no-autolabel
10. Record the acceleration device name in the NVDIMM information table.
11. Run the namespace-to-dax-device correlation command to find the DAX device name of the replacement
NVDIMM:
ndctl list --regions --verbose
Output similar to the following appears:
{
"regions":[
{
VxFlex Ready Node Operating System Installation Guide for Linux
70
X.X is the actual namespace of the NVDIMM.