Thanks for your response. I've just found that nlockmgr did not
respond when I run following command on the server. Is it a problem or
it is normal? Anyway, the NFS is still working fine.
$ rpcinfo -t linux_server nlockmgr
rpcinfo: RPC: Timed out
program 100021 version 0 is not available
$ rpcinfo -u linux_server nlockmgr
rpcinfo: RPC: Timed out
program 100021 version 0 is not available
$ rpcinfo -p
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 895 status
100024 1 tcp 898 status
100011 1 udp 806 rquotad
100011 2 udp 806 rquotad
100011 1 tcp 809 rquotad
100011 2 tcp 809 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100021 1 udp 32794 nlockmgr
100021 3 udp 32794 nlockmgr
100021 4 udp 32794 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 tcp 57164 nlockmgr
100021 3 tcp 57164 nlockmgr
100021 4 tcp 57164 nlockmgr
100005 1 udp 828 mountd
100005 1 tcp 831 mountd
100005 2 udp 828 mountd
100005 2 tcp 831 mountd
100005 3 udp 828 mountd
100005 3 tcp 831 mountd
On Fri, Jan 14, 2011 at 1:37 PM, Mi Jinlong <mijinlong@xxxxxxxxxxxxxx> wrote:
>
>
> hce :
>> Hi,
>>
>> I am running nfs server on a CentOS 5, it works fine for all
>> connections from linux, windows clients. Mac clients worked fine for
>> coping some regular files, but it could not copy mac packaging file
>> with the extension *.dmg, it stuck with an error "nfs server lockd not
>> responding", at the same time the server got a log message of
>> "rpc.statd[2448]: Can't callback linux_server (100021,4), giving up".
>>
>> Appreciate advice what could cause that problem and how could fix it?
>
> Hi hce,
>
> You use NFSv3,
> the NFSv3's file lock service depend on NLM(Network Lock Manager),
> that need a user space program named rpc.statd to support service
> like this:
>
> | nfs client | nfs server
> -------------------------------------------------
> | |
> user space | rpc.statd <---> rpc.statd
> | ^ | ^
> --------------------|------------------------|----
> | v | v
> kernel | lockd <---> lockd
>
> when your nfs client is a MAC, maybe Mac's user space don't support
> a program as rpc.statd, or you don't make the program run correctly.
>
> Maybe you can use NFSv4 to avoid this problem.
>
>
> --
> ----
> thanks
> Mi Jinlong
>
>
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