参考

mount - 16.04 CIFS "Host is down" but they are not - Ask Ubuntu

I had the same issue after a client update of the cifs-utils to 6.7-2. And basically the solution from josepcoves and user695658 worked for me. But only the value 1.0 for the mount option 'vers' worked for me. It seems like the default value for the param 'vers' is not 1.0 anymore.

その他mountオプション

vers指定(1.0〜3.0まである様子)

mount -t cifs -o vers=1.0

詳細表示

# user名が表示されるのは便利
mount --verbose

ゲストとして接続

mount -t cifs -o guest

port

mount -t cifs -o port=445

netbios名で指定

mount -t cifs -o netbiosname=server1

mode指定

mount -o dir_mode=0777,file_mode=0777

スペース入れられる様子

mount -t cifs //Server-IP-Address/Share-Name \
 -o username=name, password=password /winmount/Share-Name

文字コード指定

mount -t cifs -o codepage=cp932,iocharset=utf8