see thread "cifs.ko + smb 3.0 + DFS fails (though direct mount succeeds)" I can confirm smb > 1 + DFS works as expected with kernel >= 4.11. I have, however, seen similar spurious errors/failures. On Tue, Jul 18, 2017 at 4:47 AM, Totemo Support <support@xxxxxxxxxx> wrote: > Hi, > > I am having problems mounting a domain based DFS share using mount.cifs with the parameter vers=2.0 or vers=3.0, even though it works with the deprecated version vers=1.0. > > My test setup includes two separated Windows 2016 servers (180days eval iso), with the following roles: > > * on the first I'm running the domain controller (DC) > * on the second VM I installed the DFS Namespace Root role (DFSN) and this VM also serves the actual shares > > Now, when trying to mount, the following error occurs: > > mount //domain.dev.com/files/sales /smb -o user=Administrator,password=xxxxxx,vers=3.0 > > CIFS VFS: BAD_NETWORK_NAME: \\domain.dev.com\files > CIFS VFS: session ffff88003bd0c000 has no tcon available for a dfs referral request > CIFS VFS: cifs_mount failed w/return code = -2 > > It's working fine, with SMB1. It does also work, when I specify the DFSN server directly: > > mount //dfsn/files/sales /smb -o user=Administrator,password=xxxxxx,vers=3.0 > > From my point of view it looks like there is no resolution attempt of resolving the domain based UNC (//domain.dev.com/files) into the actual dfsroot representation. > > Since my domain controller doesn't host the dfsroot structure, any attempts resolving on it directly will fail. > > I tried initially with Kernel 4.11 but also build a recent 4.13 with the same issues. > Latest keyutils (/sbin/key.dns_resolver) are in place and configured on the system. > > Do you need any further scripts/explanations how I set up the test servers? It's nothing special, everything sticks to the defaults. > > Best, > Robert > > Totemo Support > > phone: +41 44 914 99 00 > fax: +41 44 914 99 99 > > email: support@xxxxxxxxxx > web: www.totemo.com > -- > To unsubscribe from this list: send the line "unsubscribe linux-cifs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
