It would seem your host can't resolve the ip address for the server FQDN listed for the NFS server.
You should fix the DNS problem or try mounting via ip address once you're sure that it is reachable from the server.


On Thu, Sep 10, 2020 at 12:33 PM <info@worldhostess.com> wrote:
MainProcess|jsonrpc/4::DEBUG::2020-09-10 18:14:39,299::commands::211::root::(execCmd) /usr/bin/taskset --cpu-list 0-7 /usr/bin/mount -t nfs -o soft,nosharecache,timeo=100,retrans=3,nolock storage.world.co.za:/export/nfs/data /rhev/data-center/mnt/storage.world.co.za:_export_nfs_data (cwd None)
MainProcess|jsonrpc/4::DEBUG::2020-09-10 18:14:39,310::commands::224::root::(execCmd) FAILED: <err> = b'mount.nfs: Failed to resolve server storage.world.co.za: Name or service not known\n'; <rc> = 32
MainProcess|jsonrpc/4::ERROR::2020-09-10 18:14:39,310::supervdsm_server::97::SuperVdsm.ServerCallback::(wrapper) Error in mount
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/supervdsm_server.py", line 95, in wrapper
    res = func(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/vdsm/supervdsm_server.py", line 133, in mount
    cgroup=cgroup)
  File "/usr/lib/python3.6/site-packages/vdsm/storage/mount.py", line 280, in _mount
    _runcmd(cmd)
  File "/usr/lib/python3.6/site-packages/vdsm/storage/mount.py", line 308, in _runcmd
    raise MountError(cmd, rc, out, err)
vdsm.storage.mount.MountError: Command ['/usr/bin/mount', '-t', 'nfs', '-o', 'soft,nosharecache,timeo=100,retrans=3,nolock', 'storage.world.co.za:/export/nfs/data', '/rhev/data-center/mnt/storage.world.co.za:_export_nfs_data'] failed with rc=32 out=b'' err=b'mount.nfs: Failed to resolve server storage.world.co.za: Name or service not known\n'
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