NFS corrupting files.

Hi,

We’re developing a system using Motorola MCP750 SBCs (PowerPC 750) as an
embedded system. These SBCs NFS mount a x86 machine to get access to
executables and other files. Both systems are running QNX6.1A. We have been
experiencing problems with files generated by the SBCs.

Some files get corrupted, other times we get the error ESTALE “Potentially
recoverable i/o error”.

We wrote a little test script to test out NFS. This script, called rscript,
copies a binary file off of the NFS drive into the RAM drive. It duplicates
the file in the RAM drive and then copies it back to the NFS drive. It runs
cksum on each file at each stage to detect any corruption.

It appears that the files sometimes get corrupted when writing to the NFS
drive by the SBC.

We have tried both the tiny and full TCP stacks and get the same results. We
also tested both on our development network and an isolated network using
just a cross over cable.

We wrote the test script to use only QNX supplied utilities in order to rule
out any of our code. I’ve attached a copy of our script and the output from
it. The attached files are as follows:

rscript - the test script. Run on the SBC.
nc_results_sbc - output from rscript, run on MCP750 SBC. /home is NFS,
/tmp is RAM drive. Connected through a cross over cable. NFS configured for
UDP.
nc_results_sbc_tpcip - output from rscript, run on MCP750 SBC. /home is
NFS, /tmp is RAM drive. Connected through a cross over cable. NFS configured
for TCP.

Can someone from QNX please investigate this for us?

Thanks,

Wayne



begin 666 rscript.dat
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`
end

begin 666 nc_results_sbc1.dat
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M;B]P871T97)N+FEM9R O=&UP+RX-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO
M:&XO<&%T=&5R;BYI;6<@+W1M<"]P871T97)N+FEM9R N+BX@;W5T<'5T.@T

M(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-
M"B S-S<V-#<S-C4@(" @,C T.# Q,B O=&UP+W!A='1E<FXN:6UG#0I#;VUM
M86YD.B!C<" O=&UP+W!A='1E<FXN:6UG("]T;7 O=&5S=“YI;6<-“D-O;6UA
M;F0Z(&-P(”]T;7 O<&%T=&5R;BYI;6<@+W1M<”]P,BYI;6<-“D-O;6UA;F0Z
M(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"]P,BYI;6<@+W1M
M<"]T97-T+FEM9R N+BX@;W5T<'5T.@T*(#,W-S8T-S,V-2 @(" R,#0X,#$R
M("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q
M,B O=&UP+W R+FEM9PT*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O=&5S
M=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O=&5S=“YI;6<@+VAO;64O:F]H;B]T
M97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]P,BYI;6<@+VAO;64O:F]H;B]P
M,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@
M+VAO;64O:F]H;B]P,BYI;6<@+VAO;64O:F]H;B]T97-T+FEM9R N+BX@;W5T
M<'5T.@T
(#,W-S8T-S,V-2 @(” R,#0X,#$R(”]H;VUE+VIO:&XO<&%T=&5R
M;BYI;6<-“C$X,S$R-3@V-#D@(” @,C T.# Q,B O:&]M92]J;VAN+W R+FEM
M9PT*,C0T-30W,#8P." @(" R,#0X,#$R("]H;VUE+VIO:&XO=&5S=“YI;6<-
M”@T*(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
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M(" @(" @(" @(",-“B,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
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M,# Q#0I#;VUM86YD.B!R;2 M9B O=&UP+RHN:6UG#0I#;VUM86YD.B!C<” O
M:&]M92]J;VAN+W!A='1E<FXN:6UG("]T;7 O+@T0V]M;6%N9#H@8VMS=6T@
M+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+W!A='1E<FXN:6UG(“XN+B!O
M=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H;B]P871T
M97)N+FEM9PT
(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O<&%T=&5R;BYI
M;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<&%T=&5R;BYI;6<@+W1M<"]T97-T+FEM
M9PT0V]M;6%N9#H@8W @+W1M<"]P871T97)N+FEM9R O=&UP+W R+FEM9PT
M0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+W R
M+FEM9R O=&UP+W1E<W0N:6UG(“XN+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @
M(#(P-#@P,3(@+VAO;64O:F]H;B]P871T97)N+FEM9PT*(#,W-S8T-S,V-2 @
M(" R,#0X,#$R("]T;7 O<#(N:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@
M+W1M<"]T97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]T97-T+FEM9R O:&]M
M92]J;VAN+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W R+FEM9R O:&]M
M92]J;VAN+W R+FEM9PT
0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T
M97)N+FEM9R O:&]M92]J;VAN+W R+FEM9R O:&]M92]J;VAN+W1E<W0N:6UG
M(“XN+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H
M;B]P871T97)N+FEM9PT*,3 S-34P,30P-B @(" R,#0X,#$R("]H;VUE+VIO
M:&XO<#(N:6UG#0HR,S$X-3@Q-#DY(" @(#(P-#@P,3(@+VAO;64O:F]H;B]T
)97-T+FEM9PT*
`
end

begin 666 nc_results_sbc1_tcpip.dat
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
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M#0I#;VUM86YD.B!R;2 M9B O=&UP+RHN:6UG#0I#;VUM86YD.B!C<” O:&]M
M92]J;VAN+W!A=‘1E<FXN:6UG("]T;7 O+@T0V]M;6%N9#H@8VMS=6T@+VAO
M;64O:F]H;B]P871T97)N+FEM9R O=&UP+W!A='1E<FXN:6UG(“XN+B!O=71P
M=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H;B]P871T97)N
M+FEM9PT
(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O<&%T=&5R;BYI;6<-
M"D-O;6UA;F0Z(&-P("]T;7 O<&%T=&5R;BYI;6<@+W1M<"]T97-T+FEM9PT*
M0V]M;6%N9#H@8W @+W1M<"]P871T97)N+FEM9R O=&UP+W R+FEM9PT0V]M
M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+W R+FEM
M9R O=&UP+W1E<W0N:6UG(“XN+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P
M-#@P,3(@+VAO;64O:F]H;B]P871T97)N+FEM9PT
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M<"]T97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]T97-T+FEM9R O:&]M92]J
M;VAN+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W R+FEM9R O:&]M92]J
M;VAN+W R+FEM9PT
0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T97)N
M+FEM9R O:&]M92]J;VAN+W R+FEM9R O:&]M92]J;VAN+W1E<W0N:6UG(“XN
M+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H;B]P
M871T97)N+FEM9PT*-# X-# Y-#4T," @(" R,#0X,#$R("]H;VUE+VIO:&XO
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M+FEM9PT*#0HC(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
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M(" @(" @(" @(" @(" @(PT*(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C#0H-"DUO;B!.;W8@,#4@,30Z,# Z,3,@
M551#(#(P,#$-"D-O;6UA;F0Z(’)M(“UF(”]T;7 OBYI;6<-“D-O;6UA;F0Z
M(&-P(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"\N#0I#;VUM86YD.B!C
M:W-U;2 O:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]T;7 O<&%T=&5R;BYI;6<@
M+BXN(&]U=’!U=#H-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M92]J;VAN
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M97)N+FEM9PT
0V]M;6%N9#H@8W @+W1M<"]P871T97)N+FEM9R O=&UP+W1E
M<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W!A='1E<FXN:6UG("]T;7 O<#(N
M:6UG#0I#;VUM86YD.B!C:W-U;2 O:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]T
M;7 O<#(N:6UG("]T;7 O=&5S="YI;6<@+BXN(&]U=’!U=#H-“B S-S<V-#<S
M-C4@(” @,C T.# Q,B O:&]M92]J;VAN+W!A='1E<FXN:6UG#0H@,S<W-C0W
M,S8U(" @(#(P-#@P,3(@+W1M<"]P,BYI;6<-“B S-S<V-#<S-C4@(” @,C T
M.# Q,B O=&UP+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W1E<W0N:6UG
M("]H;VUE+VIO:&XO=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<#(N:6UG
M(”]H;VUE+VIO:&XO<#(N:6UG#0I#;VUM86YD.B!C:W-U;2 O:&]M92]J;VAN
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M="YI;6<@+BXN(&]U=’!U=#H-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M
M92]J;VAN+W!A='1E<FXN:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@+VAO
M;64O:F]H;B]P,BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M92]J
M;VAN+W1E<W0N:6UG#0H-“B,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(PT*(R @(” @(" @(" @(" @(" @4&%S<SH@
M,R @(" @(" @(" @(" @(" @(" @(" C#0HC(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,-"@T36]N($YO=B P-2 Q
M-#HP,#HQ."!55$,@,C P,0T
0V]M;6%N9#H@<FT@+68@+W1M<"\J+FEM9PT*
M0V]M;6%N9#H@8W @+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+RX-“D-O
M;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"]P871T
M97)N+FEM9R N+BX@;W5T<'5T.@T*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H
M;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O
M=&UP+W!A='1E<FXN:6UG#0I#;VUM86YD.B!C<" O=&UP+W!A='1E<FXN:6UG
M("]T;7 O=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<&%T=&5R;BYI;6<@
M+W1M<”]P,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R
M;BYI;6<@+W1M<"]P,BYI;6<@+W1M<"]T97-T+FEM9R N+BX@;W5T<'5T.@T*
M(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-
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M-2 @(" R,#0X,#$R("]T;7 O=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O
M=&5S=“YI;6<@+VAO;64O:F]H;B]T97-T+FEM9PT0V]M;6%N9#H@8W @+W1M
M<"]P,BYI;6<@+VAO;64O:F]H;B]P,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H
M;VUE+VIO:&XO<&%T=&5R;BYI;6<@+VAO;64O:F]H;B]P,BYI;6<@+VAO;64O
M:F]H;B]T97-T+FEM9R N+BX@;W5T<'5T.@T
(#,W-S8T-S,V-2 @(” R,#0X
M,#$R(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“C(U-30X-3 P,#0@(” @,C T
M.# Q,B O:&]M92]J;VAN+W R+FEM9PT*-#(R.3 U,3DQ." @(" R,#0X,#$R
M("]H;VUE+VIO:&XO=&5S=“YI;6<-”@T*(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C#0HC(" @(" @(" @(" @(" @
M("!087-S.B T(" @(" @(" @(" @(" @(" @(" @(",-“B,C(R,C(R,C(R,C
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M+RHN:6UG#0I#;VUM86YD.B!C<” O:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]T
M;7 O+@T0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T97)N+FEM9R O
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M-#@P,3(@+VAO;64O:F]H;B]P871T97)N+FEM9PT
(#,W-S8T-S,V-2 @(" R
M,#0X,#$R("]T;7 O<&%T=&5R;BYI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<&%T
M=&5R;BYI;6<@+W1M<"]T97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]P871T
M97)N+FEM9R O=&UP+W R+FEM9PT
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M;B]P871T97)N+FEM9R O=&UP+W R+FEM9R O=&UP+W1E<W0N:6UG(“XN+B!O
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M,S<W-C0W,S8U(" @(#(P-#@P,3(@+W1M<"]T97-T+FEM9PT0V]M;6%N9#H@
M8W @+W1M<"]T97-T+FEM9R O:&]M92]J;VAN+W1E<W0N:6UG#0I#;VUM86YD
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0V]M;6%N9#H@
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M(“UF(”]T;7 OBYI;6<-“D-O;6UA;F0Z(&-P(”]H;VUE+VIO:&XO<&%T=&5R
M;BYI;6<@+W1M<"\N#0I#;VUM86YD.B!C:W-U;2 O:&]M92]J;VAN+W!A=‘1E
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M;VAN+W!A='1E<FXN:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@+W1M<"]P
M,BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O=&UP+W1E<W0N:6UG#0I#
M;VUM86YD.B!C<" O=&UP+W1E<W0N:6UG("]H;VUE+VIO:&XO=&5S=“YI;6<-
M"D-O;6UA;F0Z(&-P(”]T;7 O<#(N:6UG("]H;VUE+VIO:&XO<#(N:6UG#0I#
M;VUM86YD.B!C:W-U;2 O:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]H;VUE+VIO
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M-S<V-#<S-C4@(” @,C T.# Q,B O:&]M92]J;VAN+W!A='1E<FXN:6UG#0H@
M,S<W-C0W,S8U(" @(#(P-#@P,3(@+VAO;64O:F]H;B]P,BYI;6<-“B R.#$Q
M-C0R.#@@(” @,C T.# Q,B O:&]M92]J;VAN+W1E<W0N:6UG#0H-“B,C(R,C
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M(R @(” @(" @(" @(" @(" @4&%S<SH@-B @(" @(" @(" @(" @(" @(" @
M(" C#0HC(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,-"@T36]N($YO=B P-2 Q-#HP,#HS-"!55$,@,C P,0T0V]M
M;6%N9#H@<FT@+68@+W1M<"\J+FEM9PT0V]M;6%N9#H@8W @+VAO;64O:F]H
M;B]P871T97)N+FEM9R O=&UP+RX-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO
M:&XO<&%T=&5R;BYI;6<@+W1M<"]P871T97)N+FEM9R N+BX@;W5T<'5T.@T

M(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-
M"B S-S<V-#<S-C4@(" @,C T.# Q,B O=&UP+W!A='1E<FXN:6UG#0I#;VUM
M86YD.B!C<" O=&UP+W!A='1E<FXN:6UG("]T;7 O=&5S=“YI;6<-“D-O;6UA
M;F0Z(&-P(”]T;7 O<&%T=&5R;BYI;6<@+W1M<”]P,BYI;6<-“D-O;6UA;F0Z
M(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"]P,BYI;6<@+W1M
M<"]T97-T+FEM9R N+BX@;W5T<'5T.@T*(#,W-S8T-S,V-2 @(" R,#0X,#$R
M("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q
M,B O=&UP+W R+FEM9PT*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O=&5S
M=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O=&5S=“YI;6<@+VAO;64O:F]H;B]T
M97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]P,BYI;6<@+VAO;64O:F]H;B]P
M,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@
M+VAO;64O:F]H;B]P,BYI;6<@+VAO;64O:F]H;B]T97-T+FEM9R N+BX@;W5T
M<'5T.@T
(#,W-S8T-S,V-2 @(” R,#0X,#$R(”]H;VUE+VIO:&XO<&%T=&5R
M;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M92]J;VAN+W R+FEM
M9PT*,SDX,C,W-S$Y.2 @(" R,#0X,#$R("]H;VUE+VIO:&XO=&5S=“YI;6<-
M”@T*(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C#0HC(" @(" @(" @(" @(" @("!087-S.B W(" @(" @(" @(" @
M(" @(" @(" @(",-“B,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(PT*#0I-;VX@3F]V(# U(#$T.C P.C,Y(%540R R
M,# Q#0I#;VUM86YD.B!R;2 M9B O=&UP+RHN:6UG#0I#;VUM86YD.B!C<” O
M:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]T;7 O+@T0V]M;6%N9#H@8VMS=6T@
M+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+W!A='1E<FXN:6UG(“XN+B!O
M=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H;B]P871T
M97)N+FEM9PT
(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O<&%T=&5R;BYI
M;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<&%T=&5R;BYI;6<@+W1M<"]T97-T+FEM
M9PT0V]M;6%N9#H@8W @+W1M<"]P871T97)N+FEM9R O=&UP+W R+FEM9PT
M0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+W R
M+FEM9R O=&UP+W1E<W0N:6UG(“XN+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @
M(#(P-#@P,3(@+VAO;64O:F]H;B]P871T97)N+FEM9PT*(#,W-S8T-S,V-2 @
M(" R,#0X,#$R("]T;7 O<#(N:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@
M+W1M<"]T97-T+FEM9PT0V]M;6%N9#H@8W @+W1M<"]T97-T+FEM9R O:&]M
M92]J;VAN+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W R+FEM9R O:&]M
M92]J;VAN+W R+FEM9PT
0V]M;6%N9#H@8VMS=6T@+VAO;64O:F]H;B]P871T
M97)N+FEM9R O:&]M92]J;VAN+W R+FEM9R O:&]M92]J;VAN+W1E<W0N:6UG
M(“XN+B!O=71P=70Z#0H@,S<W-C0W,S8U(” @(#(P-#@P,3(@+VAO;64O:F]H
M;B]P871T97)N+FEM9PT*-# X-# Y-#4T," @(" R,#0X,#$R("]H;VUE+VIO
M:&XO<#(N:6UG#0H@,SDR-S,U-3$W(" @(#(P-#@P,3(@+VAO;64O:F]H;B]T
M97-T+FEM9PT*#0HC(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,-“B,@(” @(" @(" @(" @(" @(%!A<W,Z(#@@(" @
M(" @(" @(" @(" @(" @(" @(PT*(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C#0H-"DUO;B!.;W8@,#4@,30Z,# Z
M-#0@551#(#(P,#$-"D-O;6UA;F0Z(’)M(“UF(”]T;7 OBYI;6<-“D-O;6UA
M;F0Z(&-P(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"\N#0I#;VUM86YD
M.B!C:W-U;2 O:&]M92]J;VAN+W!A=‘1E<FXN:6UG("]T;7 O<&%T=&5R;BYI
M;6<@+BXN(&]U=’!U=#H-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M92]J
M;VAN+W!A='1E<FXN:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@+W1M<"]P
M871T97)N+FEM9PT
0V]M;6%N9#H@8W @+W1M<"]P871T97)N+FEM9R O=&UP
M+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W!A='1E<FXN:6UG("]T;7 O
M<#(N:6UG#0I#;VUM86YD.B!C:W-U;2 O:&]M92]J;VAN+W!A=‘1E<FXN:6UG
M("]T;7 O<#(N:6UG("]T;7 O=&5S="YI;6<@+BXN(&]U=’!U=#H-“B S-S<V
M-#<S-C4@(” @,C T.# Q,B O:&]M92]J;VAN+W!A='1E<FXN:6UG#0H@,S<W
M-C0W,S8U(" @(#(P-#@P,3(@+W1M<"]P,BYI;6<-“B S-S<V-#<S-C4@(” @
M,C T.# Q,B O=&UP+W1E<W0N:6UG#0I#;VUM86YD.B!C<" O=&UP+W1E<W0N
M:6UG("]H;VUE+VIO:&XO=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<#(N
M:6UG(”]H;VUE+VIO:&XO<#(N:6UG#0I#;VUM86YD.B!C:W-U;2 O:&]M92]J
M;VAN+W!A=‘1E<FXN:6UG("]H;VUE+VIO:&XO<#(N:6UG("]H;VUE+VIO:&XO
M=&5S="YI;6<@+BXN(&]U=’!U=#H-“B S-S<V-#<S-C4@(” @,C T.# Q,B O
M:&]M92]J;VAN+W!A='1E<FXN:6UG#0H@,S<W-C0W,S8U(" @(#(P-#@P,3(@
M+VAO;64O:F]H;B]P,BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O:&]M
M92]J;VAN+W1E<W0N:6UG#0H-“B,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(PT*(R @(” @(" @(" @(" @(" @4&%S
M<SH@.2 @(" @(" @(" @(" @(" @(" @(" C#0HC(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,-"@T36]N($YO=B P
M-2 Q-#HP,#HT.2!55$,@,C P,0T
0V]M;6%N9#H@<FT@+68@+W1M<"\J+FEM
M9PT0V]M;6%N9#H@8W @+VAO;64O:F]H;B]P871T97)N+FEM9R O=&UP+RX-
M"D-O;6UA;F0Z(&-K<W5M("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"]P
M871T97)N+FEM9R N+BX@;W5T<'5T.@T
(#,W-S8T-S,V-2 @(" R,#0X,#$R
M("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q
M,B O=&UP+W!A='1E<FXN:6UG#0I#;VUM86YD.B!C<" O=&UP+W!A='1E<FXN
M:6UG("]T;7 O=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O<&%T=&5R;BYI
M;6<@+W1M<”]P,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T
M=&5R;BYI;6<@+W1M<"]P,BYI;6<@+W1M<"]T97-T+FEM9R N+BX@;W5T<'5T
M.@T*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H;VUE+VIO:&XO<&%T=&5R;BYI
M;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O=&UP+W R+FEM9PT*(#,W-S8T
M-S,V-2 @(" R,#0X,#$R("]T;7 O=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T
M;7 O=&5S=“YI;6<@+VAO;64O:F]H;B]T97-T+FEM9PT0V]M;6%N9#H@8W @
M+W1M<"]P,BYI;6<@+VAO;64O:F]H;B]P,BYI;6<-“D-O;6UA;F0Z(&-K<W5M
M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+VAO;64O:F]H;B]P,BYI;6<@+VAO
M;64O:F]H;B]T97-T+FEM9R N+BX@;W5T<'5T.@T
(#,W-S8T-S,V-2 @(” R
M,#0X,#$R(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B V,S4P.30W,C<@(” @
M,C T.# Q,B O:&]M92]J;VAN+W R+FEM9PT*,S(P.#$P,C4W-" @(" R,#0X
M,#$R("]H;VUE+VIO:&XO=&5S=“YI;6<-”@T*(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C#0HC(" @(" @(" @(" @
M(" @("!087-S.B Q," @(" @(" @(" @(" @(" @(" @(" C#0HC(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,-"@T*
M36]N($YO=B P-2 Q-#HP,#HU-2!55$,@,C P,0T0V]M;6%N9#H@<FT@+68@
M+W1M<"\J+FEM9PT
0V]M;6%N9#H@8W @+VAO;64O:F]H;B]P871T97)N+FEM
M9R O=&UP+RX-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI
M;6<@+W1M<"]P871T97)N+FEM9R N+BX@;W5T<'5T.@T*(#,W-S8T-S,V-2 @
M(" R,#0X,#$R("]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@
M(” @,C T.# Q,B O=&UP+W!A='1E<FXN:6UG#0I#;VUM86YD.B!C<" O=&UP
M+W!A='1E<FXN:6UG("]T;7 O=&5S=“YI;6<-“D-O;6UA;F0Z(&-P(”]T;7 O
M<&%T=&5R;BYI;6<@+W1M<”]P,BYI;6<-“D-O;6UA;F0Z(&-K<W5M(”]H;VUE
M+VIO:&XO<&%T=&5R;BYI;6<@+W1M<"]P,BYI;6<@+W1M<"]T97-T+FEM9R N
M+BX@;W5T<'5T.@T*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]H;VUE+VIO:&XO
M<&%T=&5R;BYI;6<-“B S-S<V-#<S-C4@(” @,C T.# Q,B O=&UP+W R+FEM
M9PT*(#,W-S8T-S,V-2 @(" R,#0X,#$R("]T;7 O=&5S=“YI;6<-“D-O;6UA
M;F0Z(&-P(”]T;7 O=&5S=“YI;6<@+VAO;64O:F]H;B]T97-T+FEM9PT0V]M
M;6%N9#H@8W @+W1M<"]P,BYI;6<@+VAO;64O:F]H;B]P,BYI;6<-“D-O;6UA
M;F0Z(&-K<W5M(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<@+VAO;64O:F]H;B]P
M,BYI;6<@+VAO;64O:F]H;B]T97-T+FEM9R N+BX@;W5T<'5T.@T
(#,W-S8T
M-S,V-2 @(” R,#0X,#$R(”]H;VUE+VIO:&XO<&%T=&5R;BYI;6<-“C,Y-#0T
M,#,R-#(@(” @,C T.# Q,B O:&]M92]J;VAN+W R+FEM9PT*(#0W.#8Y.#@P
B." @(" R,#0X,#$R("]H;VUE+VIO:&XO=&5S=“YI;6<-”@``
`
end

“Operating System Tech Support” <os@qnx.com> wrote in message
news:9se5bg$1hc$1@nntp.qnx.com

It appears that the files sometimes get corrupted when writing to the
NFS
drive by the SBC.

Have you tried the option -norsvd in the /etc/exports file on the server?

-Adam

No, we hadn’t. However, we added that option, rebooted and re-ran the test
script. We still get corrupted data on the copy from the SBC to the NFS
host.

Any other ideas? Have you been able to duplicate the problem?

Wayne

It appears that the files sometimes get corrupted when writing to the NFS
drive by the SBC.

Have you tried the option -norsvd in the /etc/exports file on the server?

-Adam

Has anyone had a chance to look into this problem with NFS? Any other
testing we can do to help get to the bottom of this problem?

The problem doesn’t happen if we run the test script using 2 x86 desktops.
It only seems to happen when writing data from the SBC to the host.

We have to demonstrate a functional prototype system at the end of this
month and functional NFS is a requirement. Any pointers are appreciated.

Wayne

“Wayne Fisher” <wayne.fisher@vtecna.com> wrote in message
news:9se8j2$jmf$1@inn.qnx.com

“Operating System Tech Support” <> os@qnx.com> > wrote in message
news:9se5bg$1hc$> 1@nntp.qnx.com> …
It appears that the files sometimes get corrupted when writing to the
NFS
drive by the SBC.

Have you tried the option -norsvd in the /etc/exports file on the
server?

-Adam

No, we hadn’t. However, we added that option, rebooted and re-ran the test
script. We still get corrupted data on the copy from the SBC to the NFS
host.

Any other ideas? Have you been able to duplicate the problem?

Wayne

We have also tried using a QNX4 system as the NFS server with the same
results: files are corrupted when written by the SBC to the NFS file system.

Wayne

“Wayne Fisher” <wayne.fisher@vtecna.com> wrote in message
news:9sp9o7$8r0$1@inn.qnx.com

Has anyone had a chance to look into this problem with NFS? Any other
testing we can do to help get to the bottom of this problem?

The problem doesn’t happen if we run the test script using 2 x86 desktops.
It only seems to happen when writing data from the SBC to the host.

We have to demonstrate a functional prototype system at the end of this
month and functional NFS is a requirement. Any pointers are appreciated.

Wayne

“Wayne Fisher” <> wayne.fisher@vtecna.com> > wrote in message
news:9se8j2$jmf$> 1@inn.qnx.com> …
“Operating System Tech Support” <> os@qnx.com> > wrote in message
news:9se5bg$1hc$> 1@nntp.qnx.com> …
It appears that the files sometimes get corrupted when writing to
the
NFS
drive by the SBC.

Have you tried the option -norsvd in the /etc/exports file on the
server?

-Adam

No, we hadn’t. However, we added that option, rebooted and re-ran the
test
script. We still get corrupted data on the copy from the SBC to the NFS
host.

Any other ideas? Have you been able to duplicate the problem?

Wayne

\