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SubjectRe: Bug with netfilter and NFS server on same machine
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Am Sam, 2002-11-23 um 19.37 schrieb Lars Knudsen:

> The problem is this: A machine running linux 2.4.18 or 2.4.19 works just
> fine when running just the kernel nfsd. A single client connected to the
> server with 100Mbit ethernet sees throughput of 5-10MByte/sec even after
> an hour or two of continous transfers. If the nfs server is also running
> iptables the throughput is initially the same (5-10MByte/sec) but after
> a while (200MByte-500MByte total transfer) the client starts reporting
> "nfs server not responding" followed after a while by "nfs server OK"
> and of course the transfer rate goes way down (< 1MByte/sec). Using
> tcpdump on the client seems to indicate that some packets have their
> headers garbled - wrong fragment ids being the typical error.

Linux nicole 2.4.19-586tsc #1 Sun Oct 6 18:00:21 EST 2002 i586 unknown unknown GNU/Linux

egger@nicole:~$ sudo lsmod
Module Size Used by Not tainted
ipt_TOS 1016 12 (autoclean)
ipt_MASQUERADE 1176 1 (autoclean)
ipt_REDIRECT 728 1 (autoclean)
ipt_REJECT 2776 4 (autoclean)
ipt_LOG 3160 6 (autoclean)
ipt_state 568 55 (autoclean)
iptable_mangle 2100 1 (autoclean)
ip_nat_irc 2288 0 (unused)
ip_nat_ftp 2960 0 (unused)
iptable_nat 13208 3 [ipt_MASQUERADE ipt_REDIRECT ip_nat_irc ip_nat_ftp]
ip_conntrack_irc 2464 0 (unused)
ip_conntrack_ftp 3200 0 (unused)
ip_conntrack 13148 4 [ipt_MASQUERADE ipt_REDIRECT ipt_state ip_nat_irc ip_nat_ftp iptable_nat ip_conntrack_irc ip_conntrack_ftp]
iptable_filter 1672 1 (autoclean)
ip_tables 10488 11 [ipt_TOS ipt_MASQUERADE ipt_REDIRECT ipt_REJECT ipt_LOG ipt_state iptable_mangle iptable_nat iptable_filter]
nfsd 65616 5 (autoclean)
lockd 46864 1 (autoclean) [nfsd]
sunrpc 57436 1 (autoclean) [nfsd lockd]
af_packet 11656 1 (autoclean)

00:12.0 Ethernet controller: D-Link System Inc Sundance Ethernet
Subsystem: D-Link System Inc Sundance Ethernet
Flags: bus master, medium devsel, latency 64, IRQ 5
I/O ports at d800 [size=128]
Memory at e2810000 (32-bit, non-prefetchable) [size=128]
Expansion ROM at e1000000 [disabled] [size=64K]
Capabilities: <available only to root>

No problems with NFS whatsoever. Gigabytes of traffic get from or to
this machine without any lag. The firewall is rather restricted to the
inside and NFS nailed to fixed ports.

--
Servus,
Daniel
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