On Tue, Jul 12, 2011 at 04:27:55AM +0100, Ben Hutchings wrote: > Does anyone understand this problem or have an idea of how to > investigate it? we now understand the problem, and it was fixed for 3.0.4 with the following patch: http://vserver.13thfloor.at/ExperimentalT/delta-nfs-fix02.diff I'll try to provide similar patches for older kernels in the following days ... best, Herbert > Ben. > -------- Forwarded Message -------- > From: Harald Dunkel <harald.dunkel@aixigo.de> > Reply-to: Harald Dunkel <harald.dunkel@aixigo.de>, 633526@bugs.debian.org > To: submit@bugs.debian.org > Subject: Bug#633526: vserver kernel breaks ssh public_key authentication on NFS > Date: Mon, 11 Jul 2011 09:19:24 +0200 > Package: linux-image-2.6-vserver-amd64 > Version: 2.6.32+29 > If I use the vserver kernel on a remote host, then I > cannot login via ssh and public_key authentication. AFAICS > the access rights to my authorized_keys file get corrupted. > Before I try to login it shows on the remote host: > # ls -l /home/hdunkel/.ssh/authorized_keys > -rw------- 1 hdunkel users 1406 Jun 15 14:34 authorized_keys > When I try to login I am asked for a password (although > authorized_keys is set correctly). After this attempt I > see on the remote host: > # ls -al /home/hdunkel/.ssh/authorized_keys > -rw------- 1 4294967294 4294967294 1406 Jun 15 14:34 authorized_keys > "sshd -d" shows that sshd doesn't like this. > Using the regular Squeeze kernel without vserver patch > there is no such problem. > /home is mounted via NFS: > # cat /proc/mounts | grep /home > nfs-home:/space/home /home nfs4 rw,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.19.96.103,minorversion=0,addr=172.19.96.215 0 0 > The NFS server runs Squeeze, too. > Regards > Harri