On Fri, 7 Jun 2013 12:24:44 -0500 Steve French <smfrench@xxxxxxxxx> wrote: > On Fri, Jun 7, 2013 at 12:18 PM, Jeff Layton <jlayton@xxxxxxxxx> wrote: > > > > On Fri, 7 Jun 2013 13:15:53 +0200 > > Ketil Froyn <ketil@xxxxxxxxxx> wrote: > > > > > Hi, > > > > > > I have a Nexenta system (based on OpenSolaris/IllumOS) running ZFS > > > shared with CIFS. After upgrading to Ubuntu 13.04, I'm unable to mount > > > the Nexenta CIFS shares. I've posted an Ubuntu bug report here with > > > details (though I'm not sure cifs-utils was the right place to report > > > this), including cifsFYI enabled trace of the mount operation: > > > > > > https://bugs.launchpad.net/ubuntu/+source/cifs-utils/+bug/1185025 > > > > > > In the test results shown, I had specified my username and password to > > > mount. I have since discovered that when specifying my > > > username/password directly to mount, I am able to mount the shares > > > with the sec=ntlm or sec=ntlmv2 options. However, I've used > > > Likewise-Open to sign my desktop into the AD domain, so that any AD > > > user ID can log on to Ubuntu, and then get CIFS shares automounted > > > with the user's credentials. I guess mount uses sec=krb5 to mount > > > these shares. That still fails with the same log output. This works > > > fine on all the shares except Nexenta shares, and with Ubuntu 12.10 > > > the Nexenta shares worked fine. > > > > > > So there appears to be some sort of CIFS compatibility issue between > > > Nexenta OS 3.1.3.5 and Ubuntu 13.04. In short, all other OS-es > > > (Windows, Mac, other versions of Ubuntu) work with the Nexenta OS > > > 3.1.3.5 CIFS server and all other CIFS servers in the domain, and > > > Ubuntu 13.04 works with all other CIFS servers in the domain, but not > > > the Nexenta 3.1.3.5 server. So something in the linux CIFS codebase > > > between Ubuntu 12.10 and 13.04 appears to have triggered this error. > > > > > > Is there anything else I can do to find out exactly what is happening, > > > and whether this is linux CIFS' or Nexenta OS's fault, or a > > > combination? > > > > > > Ubuntu 13.04 uses cifs-utils 5.5, presumably with some Ubuntu patches, > > > and linux kernel 3.8.0, presumably also with Ubuntu patches. > > > > > > Regards, Ketil > > > > Likely more fallout from the change to sec=ntlmssp by default. I wonder > > if the nexenta server doesn't support extended security? In any case, > > does this work if you mount with sec=ntlmv2 in the options? If that > > doesn't work, can you try sec=ntlm? > > > > Ketil said: "I am able to mount the shares with the sec=ntlm or sec=ntlmv2 > options" so presumably is related to the lack of extended security support > and our need to build in some sort of retry logic to workaround the bugs in > the servers which require ntlmssp and the servers with bugs handling ntlmssp > - so we have to be able to try both since we have servers with both types of > bugs to workaround > Ahh, sorry...I should have read more closely. In that case, the patchset that I proposed for 3.11 (cifs: overhaul of auth selection code) should make this "just work" without needing any workarounds. Last I checked, Steve had about 40% of it merged, so it's still not clear if it will make 3.11 or not. -- Jeff Layton <jlayton@xxxxxxxxxx> -- 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
