NFS long wait problem

kernel@alon.wox.org
Wed, 28 Nov 2001 15:56:25 +0200 (IST)

Hi,
I have a problem with my home network. I have a client PC which mounts
/home as an NFS share on the server. Once in a while, all access to the
mounted directory is stalled and the following data is transferred on the
network:

06:45:23.270071 192.168.1.2.1402759134 > 192.168.1.1.2049: 100 null (DF)
06:45:23.271049 192.168.1.1.2049 > 192.168.1.2.1402759134: reply ok 24 null (DF)
06:45:23.271105 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:24.670061 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:27.470062 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:33.070065 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:44.270083 192.168.1.2.1419536350 > 192.168.1.1.2049: 100 null (DF)
06:45:44.270563 192.168.1.1.2049 > 192.168.1.2.1419536350: reply ok 24 null (DF)
06:45:44.270619 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:47.070068 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:45:52.670060 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:46:03.870068 192.168.1.2.1302095838 > 192.168.1.1.2049: 1100 write fh 96,1/197709 960 bytes @ 0x04019e000 (DF)
06:46:04.115689 192.168.1.1.2049 > 192.168.1.2.1302095838: reply ok 136 write [|nfs] (DF)

This cannot be a physical link problem, as other packets get transferred
correctly on the same link. When this happens, it's always with NFS V3 WRITE
calls. Any ideas?

I'm running MDK8.1 (kernel 2.4.8-19mdk) on both the client and the server.

Thanks in advance,
Alon

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