ndctl disable-namespace runs into uninterruptible sleep

[Quan Zou]

Hi all,

I have a server with PMem used in App Direct mode. When I wanted to clean up the namespace and recreate it, the command fell into the "D" state:

ndctl disable-namespace namespace0.2

And after this, the execution of other commands will not return. Such as `ipmctl show` and `ndctl list`.

The only way I found to recover from this situation is to reboot the host. Is there any way to avoid this situation? Or to avoid reboot?

Thank you.

Extra information:

CentOS 7.4

kernel: 4.18.0-193.28.1.el7

libipmctl-01.00.00.3474-2.el7.x86_64

ipmctl-01.00.00.3474-2.el7.x86_64

ndctl-65-5.el7.x86_64

ndctl-libs-65-5.el7.x86_64

infomation from `ipmctl show -a -dimm`:

Capacity=126.4 GiB

LockState=Disabled, Frozen

FWVersion=01.02.00.5395

FWAPIVersion=01.15

PartNumber=NMA1XBD128GQS

More information:

RDMA nic used, and hugepage configured:

```

echo "2560" > /proc/sys/vm/nr_hugepages

```

[Anton Gavriliuk]

Hi

Try to update pmem fw. 

Anton

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[Quan Zou]

Hi  Anton,

Any fw Version suggestion?
Have you ever encountered the same problem?

Thank you.

[Anton Gavriliuk]

I use this fw 01.02.00.5435. Also good idea update centos7.4, not just kernel update.

Anton

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[Quan Zou]

Thank you,  I'll have a try.