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 -- 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