I'm having an issue mounting a shared NAS drive that is hosted on a Windows 2000 server. This is a drive that I'm certain I have access to, and I frequently access it from a Windows 7 machine and a Windows Server 2008 machine. Now, I'm attempting to mount this drive from a RHEL7 machine, but I'm having some issues.

What I've done:

mkdir /mnt/neededFolder
mount -t cifs //DNS.forMyDrive.stuff/neededFolder /mnt/neededFolder -o username=myUserId,password=myPassword,domain=myDomain

What I expected: I expected to be able to access the folder at /mnt/neededFolder

What actually happened: The error I'm receiving (partially shown in the subject line here) is

mount error(115): Operation now in progress
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

What the log says:

dmesg output:

[1712257.661259] CIFS VFS: Error connecting to socket. Aborting operation.
[1712257.662098] CIFS VFS: cifs_mount failed w/return code = -115

We can all see that there is a connection issue, that is obvious. I know both machines are connected to the network. What can I try next to get this drive mounted?

EDIT: It may be worth noting that I am able to ping the DNS name and the raw IP of the remote location that I am trying to mount.


The issue ended up being that the route to the NAS was missing. Once the route was added, I was able to mount the drive with ease.

route add-net x.x.x.x netmask x.x.x.x gw x.x.x.x

Hopefully this helps someone else in the future!

  • So you're saying this was a network error? Initially you wrote that you could ping both the IP and the DNS name, how did that work if the routing was wrong? – ketil Jan 14 at 16:53
  • @ketil, you know looking back at this question, that does seem interesting. I can't remember now exactly, because it was months ago, but it's possible that I was pinging from my local machine (this question was for a server) and just stating that I can ping the address, so it was clear that server with the drive was online. – Joshua Schlichting Jan 15 at 1:06

Well, I had the same problem after I got windows 10 update 1809. The windows firewall was blocking the access. There is a predefined rule for inbound SMB conections that was not activated for private network.

Funny thing: It seems to be activated for public networks....

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