login process running into non-interuptible state with nfs4

[Guillaume Rousse]

Guillaume Rousse wrote:
More informations...

Here is a client kernel log trace.

Theyre are two processes in D state:
httpd (line 669), waiting for a lock
193.55.250.6- (line 770), with explicit references to nfs4

Also, I have several bash process with explicit nfs4 references too,
such as line 796

Also, lsof | grep /home (the only nfs4 mounted partition) show five
processes trying to open content there:
sshd       3863       root  mem       REG        8,1    16208     719602
/lib/security/pam_mkhomedir.so
bash       9122       rezk  cwd       DIR       0,18     1024    7322764
/home/members/rezk
sshd       9142       root  mem       REG        8,1    16208     719602
/lib/security/pam_mkhomedir.so
sshd       9148       rezk  mem       REG        8,1    16208     719602
/lib/security/pam_mkhomedir.so
bash       9149       rezk  cwd       DIR       0,18     1024    7322764
/home/members/rezk

Trying to strace hanging process doesn't work, and hangs too, I have to
use kill -9 to finish them.

I also have more detailed log messages than previously, with
sunrpc.nfs_debug, sunrpc.nfsd_debug and sunrpc.rpc_debug set to 3.
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