Nfs & Kerberos not working after kernel update

Hello,

I just updated my kernel to the last revision via yast online update. After rebooting, I can no longer mount our krb5 secured nfs shared and I can’t figure out why it is not working, because everything looks ok.

The kernel installed is:

andromeda:~ # uname -a
Linux andromeda 2.6.27.29-0.1-default #1 SMP 2009-08-15 17:53:59 +0200 i686 athlon i386 GNU/Linux

My problem:

andromeda:~ # mount -t nfs4 -o sec=krb5 samurai.so.in.tum.de:/home /homemount.nfs4: an incorrect mount option was specified

I think, all the kernel modules that are needed are present:

andromeda:~ # lsmod | grep gss
rpcsec_gss_krb5         9200  0 
auth_rpcgss            33564  1 rpcsec_gss_krb5
sunrpc                182024  8 rpcsec_gss_krb5,auth_rpcgss,nfs,lockd,nfs_acl

The output of rpc.gssd and rpc.idmapd in debug mode is:

andromeda:~ # rpc.gssd -f -vvvvvvvvvvvvvvvv
beginning poll
handling krb5 upcall
Full hostname for 'samurai.so.in.tum.de' is 'samurai.so.in.tum.de'
Full hostname for 'andromeda.so.in.tum.de' is 'andromeda.so.in.tum.de'
Key table entry not found while getting keytab entry for 'root/andromeda.so.in.tum.de@SO.IN.TUM.DE'
Key table entry not found while getting keytab entry for 'nfs/andromeda.so.in.tum.de@SO.IN.TUM.DE'
Success getting keytab entry for 'host/andromeda.so.in.tum.de@SO.IN.TUM.DE'
Successfully obtained machine credentials for principal 'host/andromeda.so.in.tum.de@SO.IN.TUM.DE' stored in ccache 'FILE:/tmp/krb5cc_machine_SO.IN.TUM.DE'
INFO: Credentials in CC 'FILE:/tmp/krb5cc_machine_SO.IN.TUM.DE' are good until 1251141610
using FILE:/tmp/krb5cc_machine_SO.IN.TUM.DE as credentials cache for machine creds
using environment variable to select krb5 ccache FILE:/tmp/krb5cc_machine_SO.IN.TUM.DE
creating context using fsuid 0 (save_uid 0)
creating tcp client for server samurai.so.in.tum.de
creating context with server nfs@samurai.so.in.tum.de
DEBUG: serialize_krb5_ctx: lucid version!
prepare_krb5_rfc1964_buffer: serializing keys with enctype 4 and length 8
doing downcall
destroying client clnte
destroying client clntd
destroying client clntc
andromeda:~ # rpc.idmapd -f -vvvvvvvvvvvvvv
rpc.idmapd: libnfsidmap: using domain: so.in.tum.de

rpc.idmapd: libnfsidmap: using translation method: nsswitch

rpc.idmapd: Expiration time is 600 seconds.
rpc.idmapd: nfsdopenone: Opening /proc/net/rpc/nfs4.nametoid/channel failed: errno 2 (No such file or directory)
rpc.idmapd: New client: c
rpc.idmapd: New client: d
rpc.idmapd: Opened /var/lib/nfs/rpc_pipefs/nfs/clntc/idmap
rpc.idmapd: nss_getpwnam: name 'root@so.in.tum.de' domain 'so.in.tum.de': resulting localname 'root'

rpc.idmapd: Client c: (user) name "root@so.in.tum.de" -> id "0"
rpc.idmapd: Client c: (group) name "root@so.in.tum.de" -> id "0"
rpc.idmapd: New client: e
rpc.idmapd: Stale client: e
rpc.idmapd: 	-> closed /var/lib/nfs/rpc_pipefs/nfs/clnte/idmap
rpc.idmapd: Stale client: c
rpc.idmapd: 	-> closed /var/lib/nfs/rpc_pipefs/nfs/clntc/idmap
rpc.idmapd: Stale client: d
rpc.idmapd: 	-> closed /var/lib/nfs/rpc_pipefs/nfs/clntd/idmap

Could anyone please give me a hint on what could possibly be wrong?

Have you just checked yast>network services>nfs to see if its still mounted. Try deleting the mount, quitting and then remaking the mount.

No, it is not mounted; yast also cannot mount it anymore (and it works fine from every other client in the network and kerberos itself also works).

Just check - you may want the nfs kernel (one of the suse kernels has nfs support built in)

Hello,

I have a similar problem (without Kerberos). Nfsv4 stopped working after kernel upgrade to 2.6.27.29-0.1-default. The config that worked prior to the upgrade has not been changed. After the upgrade it is not possible to mount the nfsv4 share.

Debug output from the client (/proc/sys/sunrpc/nfs_debug):

Aug 25 14:40:05 jodd kernel: NFS: nfs mount opts='clientaddr=x.x.x.x,addr=x.x.x.y'                                                                                                                          
Aug 25 14:40:05 jodd kernel: NFS:   parsing nfs mount option 'clientaddr=x.x.x.x'                                                                                                                              
Aug 25 14:40:05 jodd kernel: NFS:   parsing nfs mount option 'addr=x.x.x.y'                                                                                                                                    
Aug 25 14:40:05 jodd kernel: NFS: parsing IPv4 address x.x.x.y                  
Aug 25 14:40:05 jodd kernel: NFS: MNTPATH: '/lvm'                                                                                                                                                                 
Aug 25 14:40:05 jodd kernel: --> nfs4_create_server()                                                                                                                                                             
Aug 25 14:40:05 jodd kernel: --> nfs4_init_server()                                                                                                                                                               
Aug 25 14:40:05 jodd kernel: --> nfs4_set_client()                                                                                                                                                                
Aug 25 14:40:05 jodd kernel: --> nfs_get_client(x.x.y,v4)                                                                                                                                                      
Aug 25 14:40:05 jodd kernel: Callback port = 0xc3db                                                                                                                                                               
Aug 25 14:40:05 jodd kernel: --> nfs_get_client() = ffff88005fd52400 [new]                                                                                                                                        
Aug 25 14:40:05 jodd kernel: <-- nfs4_set_client() = 0 [new ffff88005fd52400]                                                                                                                                     
Aug 25 14:40:05 jodd kernel: <-- nfs4_init_server() = 0                                                                                                                                                           
Aug 25 14:40:05 jodd kernel: --> nfs4_path_walk(,,/)                                                                                                                                                              
Aug 25 14:40:05 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:05 jodd kernel: decode_attr_type: type=02                                                                                                                                                            
Aug 25 14:40:05 jodd kernel: decode_attr_change: change attribute=5368486447420538880                                                                                                                             
Aug 25 14:40:05 jodd kernel: decode_attr_size: file size=4096                                                                                                                                                     
Aug 25 14:40:05 jodd kernel: decode_attr_fsid: fsid=(0x0/0x0)                                                                                                                                                     
Aug 25 14:40:05 jodd kernel: decode_attr_fileid: fileid=131089                                                                                                                                                    
Aug 25 14:40:05 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0                                                                                                                               
Aug 25 14:40:05 jodd kernel: decode_attr_mode: file mode=0755                                                                                                                                                     
Aug 25 14:40:05 jodd kernel: decode_attr_nlink: nlink=4                                                                                                                                                           
Aug 25 14:40:05 jodd kernel: decode_attr_owner: uid=1000                                                                                                                                                          
Aug 25 14:40:05 jodd kernel: decode_attr_group: gid=100                                                                                                                                                           
Aug 25 14:40:05 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)                                                                                                                                                     
Aug 25 14:40:05 jodd kernel: decode_attr_space_used: space used=4096                                                                                                                                              
Aug 25 14:40:05 jodd kernel: decode_attr_time_access: atime=1250293014                                                                                                                                            
Aug 25 14:40:05 jodd kernel: decode_attr_time_metadata: ctime=1249948155                                                                                                                                          
Aug 25 14:40:05 jodd kernel: decode_attr_time_modify: mtime=1249948155                                                                                                                                            
Aug 25 14:40:05 jodd kernel: decode_attr_mounted_on_fileid: fileid=0                                                                                                                                              
Aug 25 14:40:05 jodd kernel: decode_getfattr: xdr returned 0                                                                                                                                                      
Aug 25 14:40:05 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_supported: bitmask=fcffbfff:00f9be3e                                                                                                                                     
Aug 25 14:40:06 jodd kernel: decode_attr_link_support: link support=true                                                                                                                                          
Aug 25 14:40:06 jodd kernel: decode_attr_symlink_support: symlink support=true                                                                                                                                    
Aug 25 14:40:06 jodd kernel: decode_attr_aclsupport: ACLs supported=3                                                                                                                                             
Aug 25 14:40:06 jodd kernel: decode_server_caps: xdr returned 0!                                                                                                                                                  
Aug 25 14:40:06 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_lease_time: file size=90                                                                                                                                                 
Aug 25 14:40:06 jodd kernel: decode_attr_maxfilesize: maxfilesize=18446744073709551615                                                                                                                            
Aug 25 14:40:06 jodd kernel: decode_attr_maxread: maxread=524288                                                                                                                                                  
Aug 25 14:40:06 jodd kernel: decode_attr_maxwrite: maxwrite=524288                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_fsinfo: xdr returned 0!                                                                                                                                                       
Aug 25 14:40:06 jodd kernel: Next:                                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: <-- nfs4_path_walk() = 0                                                                                                                                                             
Aug 25 14:40:06 jodd kernel: Server FSID: 0:0                                                                                                                                                                     
Aug 25 14:40:06 jodd kernel: Mount FH: 28                                                                                                                                                                         
Aug 25 14:40:06 jodd kernel: --> nfs_probe_fsinfo()                                                                                                                                                               
Aug 25 14:40:06 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_supported: bitmask=fcffbfff:00f9be3e                                                                                                                                     
Aug 25 14:40:06 jodd kernel: decode_attr_link_support: link support=true                                                                                                                                          
                        

Debug continues:

Aug 25 14:40:06 jodd kernel: decode_attr_symlink_support: symlink support=true                                                                                                                                    
Aug 25 14:40:06 jodd kernel: decode_attr_aclsupport: ACLs supported=3                                                                                                                                             
Aug 25 14:40:06 jodd kernel: decode_server_caps: xdr returned 0!                                                                                                                                                  
Aug 25 14:40:06 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_lease_time: file size=90                                                                                                                                                 
Aug 25 14:40:06 jodd kernel: decode_attr_maxfilesize: maxfilesize=18446744073709551615                                                                                                                            
Aug 25 14:40:06 jodd kernel: decode_attr_maxread: maxread=524288                                                                                                                                                  
Aug 25 14:40:06 jodd kernel: decode_attr_maxwrite: maxwrite=524288                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_fsinfo: xdr returned 0!                                                                                                                                                       
Aug 25 14:40:06 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_maxlink: maxlink=255                                                                                                                                                     
Aug 25 14:40:06 jodd kernel: decode_attr_maxname: maxname=255                                                                                                                                                     
Aug 25 14:40:06 jodd kernel: decode_pathconf: xdr returned 0!                                                                                                                                                     
Aug 25 14:40:06 jodd kernel: <-- nfs_probe_fsinfo() = 0                                                                                                                                                           
Aug 25 14:40:06 jodd kernel: <-- nfs4_create_server() = ffff88005fc17800                                                                                                                                          
Aug 25 14:40:06 jodd kernel: --> nfs4_get_root()                                                                                                                                                                  
Aug 25 14:40:06 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:06 jodd kernel: decode_attr_supported: bitmask=fcffbfff:00f9be3e                                                                                                                                     
Aug 25 14:40:06 jodd kernel: decode_attr_link_support: link support=true                                                                                                                                          
Aug 25 14:40:06 jodd kernel: decode_attr_symlink_support: symlink support=true                                                                                                                                    
Aug 25 14:40:06 jodd kernel: decode_attr_aclsupport: ACLs supported=3                                                                                                                                             
Aug 25 14:40:07 jodd kernel: decode_server_caps: xdr returned 0!                                                                                                                                                  
Aug 25 14:40:07 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:07 jodd kernel: decode_attr_type: type=02                                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_change: change attribute=5368486447420538880                                                                                                                             
Aug 25 14:40:07 jodd kernel: decode_attr_size: file size=4096                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_fsid: fsid=(0x0/0x0)                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_fileid: fileid=131089                                                                                                                                                    
Aug 25 14:40:07 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0                                                                                                                               
Aug 25 14:40:07 jodd kernel: decode_attr_mode: file mode=0755                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_nlink: nlink=4                                                                                                                                   
Aug 25 14:40:07 jodd kernel: decode_attr_owner: uid=1000                                                                                                                                                          
Aug 25 14:40:07 jodd kernel: decode_attr_group: gid=100                                                                                                                                                           
Aug 25 14:40:07 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_space_used: space used=4096                                                                                                                                              
Aug 25 14:40:07 jodd kernel: decode_attr_time_access: atime=1250293014                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_time_metadata: ctime=1249948155                                                                                                                                          
Aug 25 14:40:07 jodd kernel: decode_attr_time_modify: mtime=1249948155                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_mounted_on_fileid: fileid=0                                                                                                                                              
Aug 25 14:40:07 jodd kernel: decode_getfattr: xdr returned 0                                                                                                                                                      
Aug 25 14:40:07 jodd kernel: NFS: nfs_fhget(0:16/131089 ct=1)                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: <-- nfs4_get_root()                                                                                                                                                                  
Aug 25 14:40:07 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:07 jodd kernel: decode_attr_type: type=02                                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_change: change attribute=5368486447420538880                                                                                                                             
Aug 25 14:40:07 jodd kernel: decode_attr_size: file size=4096                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_fsid: fsid=(0x0/0x0)                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_fileid: fileid=131089                                                                                                                                                    
Aug 25 14:40:07 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0                                                                                                                               
Aug 25 14:40:07 jodd kernel: decode_attr_mode: file mode=0755                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_nlink: nlink=4                                                                                                                                                           
Aug 25 14:40:07 jodd kernel: decode_attr_owner: uid=1000                                                                                                                                                          
Aug 25 14:40:07 jodd kernel: decode_attr_group: gid=100

Debug continues:

Aug 25 14:40:07 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)                                                                                                                                                     
Aug 25 14:40:07 jodd kernel: decode_attr_space_used: space used=4096                                                                                                                                              
Aug 25 14:40:07 jodd kernel: decode_attr_time_access: atime=1250293014                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_time_metadata: ctime=1249948155                                                                                                                                          
Aug 25 14:40:07 jodd kernel: decode_attr_time_modify: mtime=1249948155                                                                                                                                            
Aug 25 14:40:07 jodd kernel: decode_attr_mounted_on_fileid: fileid=0                                                                                                                                              
Aug 25 14:40:07 jodd kernel: decode_getfattr: xdr returned 0                                                                                                                                                      
Aug 25 14:40:07 jodd kernel: NFS: permission(0:16/131089), mask=0x1, res=0                                                                                                                                        
Aug 25 14:40:08 jodd kernel: NFS: atomic_lookup(0:16/131089), lvm                                                                                                                                                 
Aug 25 14:40:08 jodd kernel: NFS: lookup(/lvm)                                                                                                                                                                    
Aug 25 14:40:08 jodd kernel: NFS call  lookup lvm                                                                                                                                                                 
Aug 25 14:40:08 jodd kernel: NFS call  lookupfh lvm                                                                                                                                                               
Aug 25 14:40:08 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:08 jodd kernel: decode_attr_type: type=02                                                                                                                                                            
Aug 25 14:40:08 jodd kernel: decode_attr_change: change attribute=5370198928654617263                                                                                                                             
Aug 25 14:40:08 jodd kernel: decode_attr_size: file size=4096                                                                                                                                                     
Aug 25 14:40:08 jodd kernel: decode_attr_fsid: fsid=(0x56cb3f30ee0c46a7/0xb7c16bb1072a61c3)                                                                                                                       
Aug 25 14:40:08 jodd kernel: decode_attr_fileid: fileid=128                                                                                                                                                       
Aug 25 14:40:08 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0                                                                                                                               
Aug 25 14:40:08 jodd kernel: decode_attr_mode: file mode=0755                                                                                                                                                     
Aug 25 14:40:08 jodd kernel: decode_attr_nlink: nlink=21                                                                                                                                                          
Aug 25 14:40:08 jodd kernel: decode_attr_owner: uid=1000                                                                                                                                                          
Aug 25 14:40:08 jodd kernel: decode_attr_group: gid=100                                                                                                                                                           
Aug 25 14:40:08 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)                                                                                                                                                     
Aug 25 14:40:08 jodd kernel: decode_attr_space_used: space used=8192                                                                                                                                              
Aug 25 14:40:08 jodd kernel: decode_attr_time_access: atime=1250167660                                                                                                                                            
Aug 25 14:40:08 jodd kernel: decode_attr_time_metadata: ctime=1250346873                                                                                                                                          
Aug 25 14:40:08 jodd kernel: decode_attr_time_modify: mtime=1250346873                                                                                                                                            
Aug 25 14:40:08 jodd kernel: decode_attr_mounted_on_fileid: fileid=0                                                                                                                                              
Aug 25 14:40:08 jodd kernel: decode_getfattr: xdr returned 0                                                                                                                                                      
Aug 25 14:40:08 jodd kernel: NFS reply lookupfh: 0                                                                                                                                                                
Aug 25 14:40:08 jodd kernel: NFS reply lookup: 0                                                                                                                                                                  
Aug 25 14:40:08 jodd kernel: NFS: nfs_fhget(0:16/128 ct=1)                                                                                                                                                        
Aug 25 14:40:08 jodd kernel: --> nfs_follow_mountpoint()                                                                                                                                                          
Aug 25 14:40:08 jodd kernel: nfs_follow_mountpoint: enter                                                                                                                                                         
Aug 25 14:40:08 jodd kernel: NFS call  lookup lvm                                                                                                                                                                 
Aug 25 14:40:08 jodd kernel: NFS call  lookupfh lvm                                                                                                                                                               
Aug 25 14:40:08 jodd kernel: encode_compound: tag=                                                                                                                                                                
Aug 25 14:40:08 jodd kernel: decode_attr_type: type=02                                                                                                                                                            
Aug 25 14:40:08 jodd kernel: decode_attr_change: change attribute=5370198928654617263                                                                                                                             
Aug 25 14:40:08 jodd kernel: decode_attr_size: file size=4096                                                                                                                                                     
Aug 25 14:40:08 jodd kernel: decode_attr_fsid: fsid=(0x56cb3f30ee0c46a7/0xb7c16bb1072a61c3)                                                                                                                       
Aug 25 14:40:08 jodd kernel: decode_attr_fileid: fileid=128                                                                                                                                                       
Aug 25 14:40:08 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0                                                                                                                               
Aug 25 14:40:08 jodd kernel: decode_attr_mode: file mode=0755                                                                                                                                                     
Aug 25 14:40:08 jodd kernel: decode_attr_nlink: nlink=21                                                                                                                                                          
Aug 25 14:40:08 jodd kernel: decode_attr_owner: uid=1000
Aug 25 14:40:08 jodd kernel: decode_attr_group: gid=100
Aug 25 14:40:09 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)
Aug 25 14:40:09 jodd kernel: decode_attr_space_used: space used=8192
Aug 25 14:40:09 jodd kernel: decode_attr_time_access: atime=1250167660
Aug 25 14:40:09 jodd kernel: decode_attr_time_metadata: ctime=1250346873
Aug 25 14:40:09 jodd kernel: decode_attr_time_modify: mtime=1250346873
Aug 25 14:40:09 jodd kernel: decode_attr_mounted_on_fileid: fileid=0
Aug 25 14:40:09 jodd kernel: decode_getfattr: xdr returned 0
Aug 25 14:40:09 jodd kernel: NFS reply lookupfh: 0
Aug 25 14:40:09 jodd kernel: NFS reply lookup: 0
Aug 25 14:40:09 jodd kernel: --> nfs_do_submount()
Aug 25 14:40:09 jodd kernel: nfs_do_submount: submounting on /lvm
Aug 25 14:40:09 jodd kernel: --> nfs4_xdev_get_sb()
Aug 25 14:40:09 jodd kernel: --> nfs_clone_server(,56cb3f30ee0c46a7:b7c16bb1072a61c3,)
Aug 25 14:40:09 jodd kernel: --> nfs_probe_fsinfo()
Aug 25 14:40:09 jodd kernel: encode_compound: tag=
Aug 25 14:40:09 jodd kernel: decode_attr_supported: bitmask=fcffbfff:00f9be3e
Aug 25 14:40:09 jodd kernel: decode_attr_link_support: link support=true
Aug 25 14:40:09 jodd kernel: decode_attr_symlink_support: symlink support=true
Aug 25 14:40:09 jodd kernel: decode_attr_aclsupport: ACLs supported=3
Aug 25 14:40:09 jodd kernel: decode_server_caps: xdr returned 0!
Aug 25 14:40:09 jodd kernel: encode_compound: tag=
Aug 25 14:40:09 jodd kernel: decode_attr_lease_time: file size=90
Aug 25 14:40:09 jodd kernel: decode_attr_maxfilesize: maxfilesize=18446744073709551615
Aug 25 14:40:09 jodd kernel: decode_attr_maxread: maxread=524288
Aug 25 14:40:09 jodd kernel: decode_attr_maxwrite: maxwrite=524288
Aug 25 14:40:09 jodd kernel: decode_fsinfo: xdr returned 0!
Aug 25 14:40:09 jodd kernel: encode_compound: tag=
Aug 25 14:40:09 jodd kernel: decode_attr_maxlink: maxlink=255
Aug 25 14:40:09 jodd kernel: decode_attr_maxname: maxname=255
Aug 25 14:40:09 jodd kernel: decode_pathconf: xdr returned 0!
Aug 25 14:40:09 jodd kernel: <-- nfs_probe_fsinfo() = 0
Aug 25 14:40:09 jodd kernel: Cloned FSID: 56cb3f30ee0c46a7:b7c16bb1072a61c3
Aug 25 14:40:09 jodd kernel: <-- nfs_clone_server() = ffff8800afdcfc00
Aug 25 14:40:09 jodd kernel: --> nfs4_get_root()
Aug 25 14:40:09 jodd kernel: encode_compound: tag=
Aug 25 14:40:09 jodd kernel: decode_attr_supported: bitmask=fcffbfff:00f9be3e
Aug 25 14:40:09 jodd kernel: decode_attr_link_support: link support=true
Aug 25 14:40:09 jodd kernel: decode_attr_symlink_support: symlink support=true
Aug 25 14:40:09 jodd kernel: decode_attr_aclsupport: ACLs supported=3
Aug 25 14:40:09 jodd kernel: decode_server_caps: xdr returned 0!
Aug 25 14:40:10 jodd kernel: encode_compound: tag=
Aug 25 14:40:10 jodd kernel: decode_attr_type: type=02
Aug 25 14:40:10 jodd kernel: decode_attr_change: change attribute=5370198928654617263
Aug 25 14:40:10 jodd kernel: decode_attr_size: file size=4096
Aug 25 14:40:10 jodd kernel: decode_attr_fsid: fsid=(0x56cb3f30ee0c46a7/0xb7c16bb1072a61c3)
Aug 25 14:40:10 jodd kernel: decode_attr_fileid: fileid=128
Aug 25 14:40:10 jodd kernel: decode_attr_fs_locations: fs_locations done, error = 0
Aug 25 14:40:10 jodd kernel: decode_attr_mode: file mode=0755
Aug 25 14:40:10 jodd kernel: decode_attr_nlink: nlink=21
Aug 25 14:40:10 jodd kernel: decode_attr_owner: uid=1000
Aug 25 14:40:10 jodd kernel: decode_attr_group: gid=100
Aug 25 14:40:10 jodd kernel: decode_attr_rdev: rdev=(0x0:0x0)
Aug 25 14:40:10 jodd kernel: decode_attr_space_used: space used=8192
Aug 25 14:40:10 jodd kernel: decode_attr_time_access: atime=1250167660
Aug 25 14:40:10 jodd kernel: decode_attr_time_metadata: ctime=1250346873
Aug 25 14:40:10 jodd kernel: decode_attr_time_modify: mtime=1250346873
Aug 25 14:40:10 jodd kernel: decode_attr_mounted_on_fileid: fileid=0
Aug 25 14:40:10 jodd kernel: decode_getfattr: xdr returned 0
Aug 25 14:40:10 jodd kernel: NFS: nfs_fhget(0:17/128 ct=1)
Aug 25 14:40:10 jodd kernel: <-- nfs4_get_root()
Aug 25 14:40:10 jodd kernel: <-- nfs4_xdev_get_sb() = 0
Aug 25 14:40:10 jodd kernel: nfs_do_submount: done
Aug 25 14:40:10 jodd kernel: <-- nfs_do_submount() = ffff880130001bc0
Aug 25 14:40:10 jodd kernel: NFS: dentry_delete(/, 4)
Aug 25 14:40:10 jodd kernel: --> nfs_free_server()
Aug 25 14:40:10 jodd kernel: --> nfs_put_client({2})
Aug 25 14:40:10 jodd kernel: <-- nfs_free_server()
Aug 25 14:40:10 jodd kernel: nfs_follow_mountpoint: done, returned -22
Aug 25 14:40:10 jodd kernel: <-- nfs_follow_mountpoint() = -22
Aug 25 14:40:10 jodd kernel: NFS: dentry_delete(/lvm, 0)
Aug 25 14:40:10 jodd kernel: --> nfs_free_server()
Aug 25 14:40:10 jodd kernel: --> nfs_put_client({1})
Aug 25 14:40:10 jodd kernel: --> nfs_free_client(4)
Aug 25 14:40:10 jodd kernel: <-- nfs_free_client()
Aug 25 14:40:10 jodd kernel: <-- nfs_free_server()
Aug 25 14:40:10 jodd kernel: <-- nfs4_get_sb() = -22 [error]

Hi; I just looked at the problem again and I have the exactly same problem you have; the kerberos part works fine, but the nfs mount fails at exactly the same step.

After your post I also tried to deactivate kerberos entirely and bingo, it also does not work.

The problem seems to root in the nfs_follow_mountpoint.

I tried mounting the nfs4 root of our server and… it succeeded, only the subtree mounts fail:

mount server:/ /mountpoint succeeds

mount server:/home /mountpoint fails with
“mount.nfs4: an incoret mount option was specified”

Oh, and I just found the bug report for this…

https://bugzilla.novell.com/show_bug.cgi?id=534616

Bug 534616 seems to be fixed but no patch yet. This is really bad. Why not splitting Kernel rpm in core and driver packages. Probably this would make patches easier to roll out.

What did you do? Roll back to old kernel or applied a patch?

At the moment, I can use another computer (running ubuntu).

If the patch is not rolled out by the start of next week, I will probably have to re-install the computer with a different distribution (we really need to use nfsv4 in our environment and using the previous kernel is not an option due to the local-root-exploit thingie).