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One is installed CentOS4.3(2.6.9-34), named "A";
The other is install RedHat7.3(2.4.19) named "B"
In "A", I used 'dd' command to create two huge files(38GB and 19GB) in '/test' directory:
# dd if=/dev/urandom of=/test/hugefile bs=10M count=3800
# dd if=/dev/urandom of=/test/hugefile2 bs=10M count=1900
"B" has a shared directory "shares",then I mount this "shares" to A's "NFS_Test":
# mount xxx.xxx.xxx.xxx:/shares /NFS_test
I wrote the following script to cp and compare files:
#THIS WILL COPY $1 TO $2
#THEN COMPARE WITH DIFF, AND PUT THE RESULTS IN $3
#1ST COPY 1 TO 2
cp -v $1 $2 >> $3
#then compare them using diff
diff -s $1 $2 >> $3
#then copy $2 to $1.tmp
cp -v $2 $1.tmp >>$3
Have no idea wat that nfs script is for, but RedHat7.3 is pretty old. It uses a 2.4 kernel and if this kernel doesn't support large files, then there probably is a limit of 2.1Gb. Maybe the 2.1Gb limit is the problem, you will have to check the file sizes on the redhat machine.