When I'm trying to add a storage domain via the webadmin I'm getting the error message that's on the subject.

in the vdsm.log I see this error:

2020-07-29 04:53:48,045-0400 ERROR (check/loop) [storage.Monitor] Error checking path /rhev/data-center/mnt/vserver-spider.eng.lab.tlv.redhat.com:_pub_delfassy_nfs__42/17093147-8e4b-4161-9ae3-4d4606b140df/dom_md/metadata (monitor:525)
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/storage/monitor.py", line 523, in _pathChecked
    delay = result.delay()
  File "/usr/lib/python3.6/site-packages/vdsm/storage/check.py", line 391, in delay
    raise exception.MiscFileReadException(self.path, self.rc, self.err)
vdsm.storage.exception.MiscFileReadException: Internal file read failure: ('/rhev/data-center/mnt/vserver-spider.eng.lab.tlv.redhat.com:_pub_delfassy_nfs__42/17093147-8e4b-4161-9ae3-4d4606b140df/dom_md/metadata', 1, bytearray(b"/usr/bin/dd: failed to open \'/rhev/data-center/mnt/vserver-spider.eng.lab.tlv.redhat.com:_pub_delfassy_nfs__42/17093147-8e4b-4161-9ae3-4d4606b140df/dom_md/metadata\': No such file or directory\n"))

when looking at the directory I do see that metadata was created under this directory, with the following content:

[delfassy@delfassy mnt]$ cd new_nfs/cddff7bb-bb0a-4fc8-8ba4-023be91d822d/dom_md/

[delfassy@delfassy dom_md]$ less metadata 

CLASS=Data

DESCRIPTION=spider
IOOPTIMEOUTSEC=10
LEASERETRIES=3
LEASETIMESEC=60
LOCKPOLICY=
LOCKRENEWALINTERVALSEC=5
POOL_UUID=
REMOTE_PATH=vserver-spider.eng.lab.tlv.redhat.com:/pub/delfassy/new_nfs
ROLE=Regular
SDUUID=cddff7bb-bb0a-4fc8-8ba4-023be91d822d
TYPE=NFS
VERSION=4
_SHA_CKSUM=f4953016c94f205127b00a5b10f0e7d5d9cf24f7

The permissions on the directory are: 

drwxrwxrwx. 3 vdsm     kvm      4096 Jul 29 11:49 new_mnt

Are there any other configurations I'm missing? Any idea how this issue can be resolved?

Thanks,

Dana