Tested latest ndctl version 66 with ubuntu 4.15.0-60-generic
Still the same issue. Do I need a kernel fix?
root@srl-mds2:~# module load ndctl/66
root@srl-mds2:~# which ndctl
/cm/shared/apps/ndctl/66/bin/ndctl
root@srl-mds2:~# ldd /cm/shared/apps/ndctl/66/bin/ndctl
linux-vdso.so.1 (0x00007ffff7ffa000)
libndctl.so.6 => /cm/shared/apps/ndctl/66/usr/lib/libndctl.so.6
(0x00007ffff7985000)
libdaxctl.so.1 => /cm/shared/apps/ndctl/66/usr/lib/libdaxctl.so.1
(0x00007ffff777d000)
libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007ffff7576000)
libjson-c.so.3 => /lib/x86_64-linux-gnu/libjson-c.so.3
(0x00007ffff736b000)
libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1
(0x00007ffff7167000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ffff6d76000)
libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007ffff6b58000)
libkmod.so.2 => /lib/x86_64-linux-gnu/libkmod.so.2 (0x00007ffff6941000)
/lib64/ld-linux-x86-64.so.2 (0x00007ffff7dd5000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007ffff6739000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007ffff651a000)
root@srl-mds2:~# ndctl create-namespace --mode fsdax --map dev -e namespace0.0
-f -vvv
enable_labels:1029: region0: failed to initialize labels
namespace_reconfig:1061: 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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https://bugs.launchpad.net/dell-poweredge/+bug/1811660/+subscriptions
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