Hi All, We are using RHEL6.1 as an NFS server, and we have configured an RHEL6.2 system as an NFS client. We configured AD+Kerberos set up on both these machines. The kerberos TGT ticket is set to expire after a long time, but the kerberos service ticket is set to expire only after a short time (10 minutes), but the service ticket is renewable! NFS I/O fails around when service ticket expires (EIO or EACCESS). If we retry the command (or any command that generates NFS I/O), the service ticket gets renewed and everything works until the next service expiry time. Could this be an AD (Active Directory) related issue? Do auto renewing service tickets work in NFS (nfs-utils-1.2.3-15.el6.x86_64)? We have tried with 10 hour service ticket expiry time as well. Same issue, the I/O fails after 10 hours! I am not familiar with kerberos and NFS security. Is there a way to manually (cron/script) renew those tickets and make it work without NFS errors? I would appreciate any help. Regards, Malahal. -- 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