Hello,
since kernel 2.6.18-164.el5 no user could login any more from nfs client into his home directory on nfs server. The kde error message is: "The following installation problem was detected while trying to start KDE: Writing to $HOME directory (/home/<USER>) failed with the error 'Permission denied' KDE is unable to start."
/home is exported with nfs4 (gss/krb5), the password is delivered by nis. Everything works fine if I reboot the nfs server into the previous kernel 2.6.18-128.7.1.el5. Then it is completely irrelevant which kernel version the client has. So /home export by nfs4 works for client with kernel versions 2.6.18-164.el5 and 2.6.18-128.7.1.el5.
If the nfs server runs under kernel 2.6.18-164.el5, the error messages for the user login process are (names for user, client and domain are replaced):
/var/log/messages Sep 16 15:54:13 <NFS_CLIENT> gdm[3122]: run_session_child: »~/.xsession-errors« konnte nicht geöffnet werden Sep 16 15:55:02 <NFS_CLIENT> ntpd[2674]: synchronized to 192.168.0.1, stratum 14 Sep 16 15:57:14 <NFS_CLIENT> gdm[3122]: run_session_child: »~/.xsession-errors« konnte nicht geöffnet werden
/var/log/secure Sep 16 15:57:14 <NFS_CLIENT> gdm[3122]: pam_unix(gdm:session): session opened for user <USER> by (uid=0) Sep 16 15:57:14 <NFS_CLIENT> sudo: pam_unix(sudo:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=<USER> Sep 16 15:57:14 <NFS_CLIENT> sudo: pam_krb5[7339]: authentication fails for '<USER>' (<USER>@<DOMAIN>): Authentication failure (Decrypt integrity check failed)
Strange files under /home/$USER: ---xrw--wT 1 <USER> <USER> 0 Jan 17 2038 SskWxq ---------- 1 <USER> <USER> 0 Jan 17 2038 .xsession-errors
The following user processes are running on login error: startkde ssh-agent dbus-launch dbus-daemon kdeinit dcopserver klauncher kded kcminit_startup kwrapper ksmserver
regards Olaf