On Mon, Jan 21, 2013 at 04:07:39PM +0100, richard@xxxxxxxxxx wrote: > Hi all, > > I have a question about nfs-utils. It's about a patch that was submitted, > way back in 2010, fixing hanging mounts because of a int/uint problem: > > you can read the commit message at: > http://www.spinics.net/lists/linux-nfs/msg14723.html > > This code gets hit, e.g. with the new debian stable release where > nfs-kernel-server/nfs-common is upgraded to 1.2.6-3 (or upgrade > nfs-kernel-server from debian stable to debian unstable). On my nfsv4+krb5 > system, this seems to do exactly the opposite of the patch: not fixing, > but in fact introducing a hanging mount. > > When I change the code back from unsigned uid's to signed uid's the mount > works again. Assuming you're running kernel 3.7--this shoulds like the problem fixed by kernel commit 621eb19ce1ec.. "svcrpc: Revert "sunrpc/cache.h: replace simple_strtoul"", which has also been backported to 3.7.3. Could you let us know whether applying that patch, or upgrading to 3.7.3, fixes the problem? --b. > > Can anyone give me any help understanding why this is, or point me in a > direction in getting this solved? I very well might have just > misconfigured my nfsv4 + krb5 system (asking myself why am I getting > negative uids?) > > Some more information to help debugging: > > 1) I'm running a VM as a kerberos KDC/admin server (debian sid/unstable) > 2) I'm running a second VM as a nfsv4 server configured to use this > kerberos VM (debian squeeze/stable) > 3) All VM's are running linux kernel 3.7 (no modules, crypto stuff > configured), time is synchronized by ntpdate > 4) On both the nfs-server as an nfs-client, I can succesfully mount using > krb5/5i/5p. > > Problem: once I dist-upgrade the nfs-server to unstable where > nfs-utils=1.2.6-3, the mount hangs as described in debian bug #682709. > When I delete the newly acquired > machine credential /tmp/krb5cc_machine_***, and retry the mount, the > syslog error is the following: > > ERROR: GSS-API: error in gss_acquire_cred(): Unspecified GSS failure. > Minor code may provide more information - Unknown error > > I have a patch available for 1.2.6-3 (basically the opposite of the > commit), that works for my environment. Just a few lines, can paste if > anyone is interested. > > Thanks for the help! > > Richard van den Toorn > (The Netherlands) > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" 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-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
