[Linux-cluster] GFS on RedHat Enterprise 3 ES Update 6

[Angela]

Hi all,
the content of "/var/log/messages" is the following:

Jan 25 12:49:29 DRMU_DR lock_gulmd_core[9451]: EOF on xdr (GFS Kernel 
Interface:127.0.0.1 idx:2 fd:6)
Jan 25 12:49:29 DRMU_DR lock_gulmd_core[9451]: In core_io.c:1569 (6.0.2.27) 
death by: Cannot continue without "GFS Kernel Interface" Node reset 
required to re-activate cluster operations.
Jan 25 12:49:29 DRMU_DR kernel: lock_gulm: fsid=alpha:gfs01: Exiting 
gulm_mount with errors -512
Jan 25 12:49:29 DRMU_DR kernel: GFS: can't mount proto = lock_gulm, table = 
alpha:gfs01, hostdata =
Jan 25 12:50:02 DRMU_DR kernel: lock_gulm: fsid=alpha:gfs01: Exiting 
gulm_mount with errors -111
Jan 25 12:50:02 DRMU_DR kernel: GFS: can't mount proto = lock_gulm, table = 
alpha:gfs01, hostdata =
Jan 25 14:53:16 DRMU_DR kernel: GFS 6.0.2.27 (built Oct  3 2005 15:21:43) 
installed
Jan 25 15:03:58 DRMU_DR lock_gulmd_core[2315]: EOF on xdr (GFS Kernel 
Interface:127.0.0.1 idx:1 fd:5)
Jan 25 15:03:58 DRMU_DR lock_gulmd_core[2315]: In core_io.c:1569 (6.0.2.27) 
death by: Cannot continue without "GFS Kernel Interface" Node reset 
required to re-activate cluster operations.
Jan 25 15:03:58 DRMU_DR kernel: lock_gulm: fsid=alpha:gfs01: Exiting 
gulm_mount with errors -512
Jan 25 15:03:58 DRMU_DR kernel: GFS: can't mount proto = lock_gulm, table = 
alpha:gfs01, hostdata =

It seems a lock_gulm problem, do you have any suggestion?
Thanks in advance,

Angela