Tested latest kernel 4.15.0-72-generic on bionic.
root@srl-mds1:~# dpkg -l | grep -i ndctl
ii libndctl6 61.2-0ubuntu1~18.04.1
amd64 Utility library for managing the libnvdimm subsystem
ii ndctl 61.2-0ubuntu1~18.04.1
amd64 Utility for managing the nvdimm subsystem
root@srl-mds1:~# ndctl create-namespace -e "namespace0.0" -m fsdax -f -vvv
enable_labels:945: region0: failed to initialize labels
namespace_reconfig:977: region0: no idle namespace seed
failed to reconfigure namespace: No such device
root@srl-mds1:~#
But if I add --no-autolabel it works
root@srl-mds1:~# ndctl create-namespace --no-autolabel --mode fsdax --map dev
-e namespace0.0 -f -vvv
{
"dev":"namespace0.0",
"mode":"fsdax",
"map":"dev",
"size":"189.00 GiB (202.94 GB)",
"uuid":"4c9523f5-8442-4356-9133-0e48c88c8d8f",
"sector_size":512,
"blockdev":"pmem0",
"numa_node":0
}
root@srl-mds1:~# ndctl create-namespace --no-autolabel --mode fsdax --map dev
-e namespace1.0 -f -vvv
{
"dev":"namespace1.0",
"mode":"fsdax",
"map":"dev",
"size":"189.00 GiB (202.94 GB)",
"uuid":"2a16dd16-df10-4737-abb5-060266070d7e",
"sector_size":512,
"blockdev":"pmem1",
"numa_node":1
}
Bionic LTS kernel still needs kernel fix.
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https://bugs.launchpad.net/bugs/1811785
Title:
NVDIMM-N doesn't work properly on Dell EMC PowerEdge R840
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