Seeing this on bionic with 4.15.0-60-generic x86_64 kernel.
Any movement on this issue?
root@srl-mds2:~# uname -ar
Linux srl-mds2 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22 16:55:30 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux
root@srl-mds2:~# ndctl list
[
{
"dev":"namespace1.0",
"mode":"raw",
"size":206158430208,
"sector_size":512,
"blockdev":"pmem1",
"numa_node":1
},
{
"dev":"namespace0.0",
"mode":"raw",
"size":206158430208,
"sector_size":512,
"blockdev":"pmem0",
"numa_node":0
}
]
root@srl-mds2:~# 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
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https://bugs.launchpad.net/bugs/1811660
Title:
[SRU] Unable to modify/create-namespace over NVDIMM-N
Status in The Dell-poweredge project:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
Users are unable to modify or create namespaces over NVDIMM-N
[Test Case]
Steps to Reproduce:
1. Setup a Dell EMC 14G server R740xd server with NVDIMM-N, update BIOS &
NVDIMM firmware to latest available to customers.
2. Install and boot to Ubuntu 18.04
3. Notice that no pmems are enumerated.
4. Try #ndctl create-namespace -> Failure with device or resource busy.
Actual results:
No pmems are enumerated, cannot create namespaces.
If pmems are already present, then cannot modify the namespaces.
Expected results:
namespace creation should be possible
[Regression Potential]
The Regression Risk is low, Intel not impacted but Dell is.
[Other Info]
Additional Info:
* Seen with upstream linux-4.20.2 also.
* Upstream bug report -
https://github.com/pmem/ndctl/issues/78
* Upstream kernel patch:
https://lists.01.org/pipermail/linux-nvdimm/2019-January/019435.html
Request you to incorporate it in bionic and xenial kernels.
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