From: "Kevin Coffman" <kwc@citi.umich.edu>
Subject: Re: NFSv4 problem?(chown(1) process hang)
Date: Thu, 23 Mar 2006 18:22:42 -0500
Message-ID: <4d569c330603231522h6d09449etc9553a35512628c4@mail.gmail.com>
References: <20060316120750.76054181.s-sagawa@jp.fujitsu.com>
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To: "Shunichi Sagawa" <s-sagawa@jp.fujitsu.com>
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The problem appears to be an error in our code that only exhibits the
problem when used in combination with libevent-1.0b.  When used with
other versions of libevent, the problem doesn't appear...

(Hopefully) attached is the patch.


On 3/15/06, Shunichi Sagawa <s-sagawa@jp.fujitsu.com> wrote:
> Hello,
>
> In the NFS access operation,
> "chown guest.guest file" causes the process hang.
>
>
> [NG pattern]---------------------------------------------------------
>    <server kernel-2.6.9>
>    1. System startup
>
>    # chkconfig --list | egrep "nfs|rpcidmap"
>    nfs             0:off   1:off   2:on    3:on    4:on    5:on    6:off
>    rpcidmapd       0:off   1:off   2:off   3:on    4:on    5:on    6:off
>    nfslock         0:off   1:off   2:off   3:on    4:on    5:on    6:off
>    #
>    # cat /etc/exports
>    /work *(rw,sync,no_root_squash,fsid=3D0)
>    #
>    # ls -ld /work
>    drwxr-xr-x  3 root root 4096 Mar 16 13:22 /work
>    #
>    # grep guest /etc/passwd
>    guest:x:501:501::/home/guest:/bin/bash
>    #
>    # cat /etc/idmapd.conf
>    [General]
>
>    Verbosity =3D 0
>    Pipefs-Directory =3D /var/lib/nfs/rpc_pipefs
>    Domain =3D localdomain
>
>    [Mapping]
>
>    Nobody-User =3D nobody
>    Nobody-Group =3D nobody
>
>    [Translation]
>    Method =3D nsswitch
>    #
>
>    <client kernel-2.6.9>
>    1. System startup
>
>    # showmount -e nfsserver
>    Export list for nfsserver:
>    /work *
>    #
>    # grep guest /etc/passwd
>    guest:x:501:501::/home/guest:/bin/bash
>    #
>    # mount -t nfs4 nfsserver:/ /mnt/nfs
>    # df
>    Filesystem           1K-blocks      Used Available Use% Mounted on
>    /dev/hda2             10080520   8027400   1541052  84% /
>    /dev/hda1               101086     24234     71633  26% /boot
>    none                    517932         0    517932   0% /dev/shm
>    /dev/hda5              4814936   1847656   2722692  41% /work
>    nfsserver:/            1027776      1280    974272   1% /mnt/nfs
>    # cd /mnt/nfs
>    # ls -l hogehoge
>    -rw-r--r--  1 root root 9 Mar 16  2006 hogehoge
>    # chown guest.guest hogehoge
>    hang.
>
> [OK pattern]-----------------------------------------------------------
>    <server>
>    1. System startup
>    2. /etc/init.d/rpcidmapd restart
>    :
>    :
>    It is the same as the operation of mentioning above.
>
>
> This problem doesn't occur if rpcidmapd is restart.
> Is it a problem of my setting?
> Or, NFSv4 problem?
>
> Best Regards,
> Sagawa.
>
>
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