Hello together! My OS: Debian 6.0.3 (squeeze) Machines: SUN Enterprise T5120 (USPARC64) --- Issue description: I've an NFS server (cluster1=137.226.167.241) and a client (cluster2=137.226.167.242) which should mount it's nfsroot from cluster1. The linux-2.6.32 kernel on cluster2 shows this during startup: [ 528.982985] IP-Config: Complete: [ 528.983049] device=eth0, addr=137.226.167.242, mask=255.255.255.224, gw=137.226.167.225, [ 528.983299] host=cluster2, domain=, nis-domain=(none), [ 528.983383] bootserver=255.255.255.255, rootserver=137.226.167.241, rootpath= [ 528.983633] Looking up port of RPC 100003/2 on 137.226.167.241 [ 530.037059] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx [ 530.056881] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 564.002113] rpcbind: server 137.226.167.241 not responding, timed out [ 564.002295] Root-NFS: Unable to get nfsd port number from server, using default [ 564.002412] Looking up port of RPC 100005/1 on 137.226.167.241 [ 564.104137] VFS: Mounted root (nfs filesystem) on device 0:15. It can mount the nfsroot finally. But if I use kernel linux-2.6.39.4 on cluster2 it can't mount it's nfsroot. (I've added "nfsdebug" to the kernel arguments for more debug info): [ 407.571521] IP-Config: Complete: [ 407.571589] device=eth0, addr=137.226.167.242, mask=255.255.255.224, gw=137.226.167.225, [ 407.571793] host=cluster2, domain=, nis-domain=(none), [ 407.571907] bootserver=255.255.255.255, rootserver=137.226.167.241, rootpath= [ 407.572332] Root-NFS: nfsroot=/srv/nfs/cluster2 [ 407.572726] NFS: nfs mount opts='udp,nolock,addr=137.226.167.241' [ 407.572927] NFS: parsing nfs mount option 'udp' [ 407.572995] NFS: parsing nfs mount option 'nolock' [ 407.573071] NFS: parsing nfs mount option 'addr=137.226.167.241' [ 407.573139] NFS: MNTPATH: '/srv/nfs/cluster2' [ 407.573203] NFS: sending MNT request for 137.226.167.241:/srv/nfs/cluster2 [ 408.617894] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx [ 408.638319] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 442.666622] NFS: failed to create MNT RPC client, status=-60 [ 442.666732] NFS: unable to mount server 137.226.167.241, error -60 [ 442.666868] VFS: Unable to mount root fs via NFS, trying floppy. [ 442.667032] VFS: Insert root floppy and press ENTER The NFS _server_ is always the same. In 2.6.32, 2.6.33, 2.6.35, 2,6.36 and 2.6.36.4 an NFS mount for nfsroot works fine. I've tested these kernels where the issue occurs: 2.6.37, 2.6.38, 2.6.39.4. So there's a break between 2.6.36.4 and 2.6.37. If you need more information - please ask! The problem is that I need a kernel >= 2.6.37 because of some other issues... So I'm very thankful for each help and I provide all needed information very fast. Regards, Lukas PS: My kernel-configs: http://net.razik.de/linux/T5120/ And here the NFS parts: linux-2.6.36.4# grep NFS .config CONFIG_NFS_FS=y CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=y # CONFIG_NFS_V4_1 is not set CONFIG_ROOT_NFS=y # CONFIG_NFS_USE_LEGACY_DNS is not set CONFIG_NFS_USE_KERNEL_DNS=y CONFIG_NFSD=m CONFIG_NFSD_V2_ACL=y CONFIG_NFSD_V3=y CONFIG_NFSD_V3_ACL=y CONFIG_NFSD_V4=y CONFIG_NFS_ACL_SUPPORT=y CONFIG_NFS_COMMON=y CONFIG_NCPFS_NFS_NS=y linux-2.6.37# grep NFS .config CONFIG_NFS_FS=y CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=y # CONFIG_NFS_V4_1 is not set CONFIG_ROOT_NFS=y # CONFIG_NFS_USE_LEGACY_DNS is not set CONFIG_NFS_USE_KERNEL_DNS=y # CONFIG_NFS_USE_NEW_IDMAPPER is not set CONFIG_NFSD=m CONFIG_NFSD_DEPRECATED=y CONFIG_NFSD_V2_ACL=y CONFIG_NFSD_V3=y CONFIG_NFSD_V3_ACL=y CONFIG_NFSD_V4=y CONFIG_NFS_ACL_SUPPORT=y CONFIG_NFS_COMMON=y CONFIG_NCPFS_NFS_NS=y -- 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