Description of problem: NFS mounts don't seem to work consistently with util-linux-2.13-0.20.4 An automounted home directory that mounts with util-linux-2.13-0.20.1 has problems with util-linux-2.13-0.20.4. Version-Release number of selected component (if applicable): util-linux-2.13-0.20.4 How reproducible: very. with correct parameters Steps to Reproduce: 1. Upgrade to util-linux-2.13-0.20.4 2. Restart autofs 3. Attempt access to nfs automounted directory Actual results: [root@dunamis ~]# ls ~kennethr ls: /home/poppy24/kennethr: No such file or directory [root@dunamis ~]# Expected results: [root@dunamis ~]# ls ~kennethr 007-4644-003.pdf employee_faq.pdf README fedora-core.repo tests archives Desktop kdb.mm tmp bin dev Mail Trash Downloads nsswitch.conf wa efs.kennethr.d public_html [root@dunamis ~]# Additional info: I was able to successfully perform the following on dumamis [root@dunamis log]# mount -o vers=3,proto=tcp poppy:/export/home/poppy24 /mnt/poppy [root@dunamis log]# umount /mnt/poppy This mount failed... [root@dunamis log]# mount -o vers=3,proto=udp poppy:/export/home/poppy24 /mnt/poppy proto=udp failed to mount with either nfs vers=2 or vers=3 on dunamis. The NFS server poppy is an IRIX machine. A mount from a SLES9 NFS server seemed to work.
Could you please post a bzip2 binary tethereal trace via tethereal -w /tmp/data.pcap host <server> ; bzip2 /tmp/data.pcap
Created attachment 133022 [details] tethereal -w /tmp/data.pcap host poppy here is the requested trace
The trace seems to show an oddity that is hard to explain... When a client mounts a NFS v3/v2 fileystem it send the server a series of request to the portmapper (asking for the mountd and nfs ports), a NFS ping to ensure the server is up and then finally a request to mountd to get the root filehandle of the exported filesystem. Now the curious thing about this trace is that it only shows the server's reply to the NFS ping not the clients request... So I'm wonder if the request is going out one network interface and coming back on another one... Is there two network interfaces (i.e. eth0 and an eth1) on the client? Looking at the changes between 2.13-0.20.1 and 2.13-0.20.4 where as a change to the mount code that would use UDP first and then TCP when contacting the remote server (which greatly reduces the number of tcp connections need to do mounts allowing more mounts to happen at the same time). To eliminate this functionality, add the 'tcp' option to the autofs mount args... and then retry it... Also please capture and post an ethereal trace of the retry.
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