https://ask.fedoraproject.org/en/question/112944/receiving-inputoutput- error-when-trying-to-mount-windows-share-in-fedora-26/
I think this is a same issue.. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1730607 Title: mount cifs with SMB 3.0 stop working Status in linux package in Ubuntu: New Bug description: I have a Ubuntu Server (14.04.5 LTS (GNU/Linux 4.4.0-98-generic x86_64)) and a Windows Server 2012 R2 File Server with a File Share. I mounted a file share to my linux server with a cifs-utils. Everything worked fine until some kernel update installed on Ubuntu. SMB 3.0 stopped working and my share not mounted. sudo mount -t cifs //myserver.xxx.net/WebBackup -o username=user,password=P@ssw0rd,domain=xxx.net,vers=3.0 /backupdrive - not working mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) if i change to vers=2.1 - it it work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730607/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
