Re: 2.6.15-rc3: adduser: unable to lock password file

JaniD++
2005-12-02T11:00:13Z

Hi,

----- Original Message -----
From: "Trond Myklebust" <trond.myklebust@fys.uio.no>
To: "JaniD++" <djani22@dynamicweb.hu>
Cc: <linux-kernel@vger.kernel.org>
Sent: Friday, December 02, 2005 1:02 AM
Subject: Re: 2.6.15-rc3: adduser: unable to lock password file

> On Thu, 2005-12-01 at 23:47 +0100, JaniD++ wrote:
> > Hello, list,
> >
> > I get this after upgrade from 2.6.14.2
> >
> > [root@dy-xeon-1 etc]# adduser someuser
> > adduser: unable to lock password file
> > [root@dy-xeon-1 etc]#
> >
> > I use nfsroot!
>
> I'm seeing no trouble with locking on 2.6.15-rc3 (with or without the
> -onolock option). Could you please use 'strace' to get a dump of what
> adduser is failing on?

OK, i will try it, if i can.... (this is a productive online system, maybe
next reboot)

There is some additional info:

[root@dy-xeon-1 root]# mount
192.168.0.1://NFS/ROOT-BASE/ on / type nfs
(rw,hard,rsize=8192,wsize=8192,timeo=5,retrans=0,actimeo=1)
none on /proc type proc (rw,noexec,nosuid,nodev)
192.168.2.100://DY_SYSTEM on /mnt/DY_SYSTEM type nfs
(rw,hard,rsize=16384,wsize=8192,timeo=5,retrans=0,actimeo=1,addr=192.168.2.1
00)
192.168.2.100://MAIL_STORE on /mnt/mail_store type nfs
(rw,hard,rsize=16384,wsize=8192,timeo=5,retrans=0,actimeo=1,noac,addr=192.16
8.2.100)
none on /dev/pts type devpts (rw,gid=5,mode=620)
none on /dev/shm type tmpfs (rw)
none on /sys type sysfs (rw)
none on /dev/cpuset type cpuset (rw)
/dev/md10 on /mnt/md10 type xfs
(rw,noexec,nosuid,nodev,dirsync,_netdev,noatime,osyncisdsync,noalign)
/dev/md31 on /mnt/md0 type xfs
(rw,noexec,nosuid,nodev,dirsync,_netdev,noatime,osyncisdsync,noalign)

The etc is on / (the first line.)

After i change the kernel from 2.6.14.2 to 2.6.15-rc3, my system starts to
send error messages about user-existing.
First i starts to search the problem, and finally tracked down to kernel.
(I try to reboot with 15-rc3 and run adduser BEFORE all other service or
script, and the issue is the same.
Than i reboot back to 2.6.14.2, and the error message is gone!)

The adduser sends messages "unable to lock password file", and
sometime -usually first exec- "unable to lock shadow file".

If i know correctly, the nfsroot is only works with NFS v2.
Do you have try it with NFS or exactly on NFSROOT?

On the next reboot, i will try strace....

Cheers,

Janos

>
> Cheers,
> Trond
>
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