create devdax with "-a 1g" failed from 5.3.0-rc1

Yi Zhang
2019-07-31T00:43:56Z

Hi Dan

As subject, I found it failed from bellow commit[1], steps list here [2] and I've attached the full dmesg, let me know if you need more info, thanks.

[1]
commit a3619190d62ed9d66416891be2416f6bea2b3ca4 (refs/bisect/bad)
Author: Dan Williams <dan.j.williams@intel.com>
Date: Thu Jul 18 15:58:40 2019 -0700

libnvdimm/pfn: stop padding pmem namespaces to section alignment

[2]
# ./ndctl destroy-namespace all -r all -f
destroyed 5 namespaces
# ./ndctl create-namespace -r region1 -m devdax -a 1g -s 12G -vv
libndctl: ndctl_dax_enable: dax1.0: failed to enable
Error: namespace1.0: failed to enable

failed to create namespace: No such device or address
# ./ndctl -v
65

Best Regards,
Yi Zhang