Hi,
We will appreciate if anyone can suggest a solution to our NFS problem.
We were running a linux cluster with redhat 7.3.
The NFS problem is:
Files written by a f90 program running at master node were not updated
for the other nodes to see their content correctly. It seems like a sync
problem.
The NFS was mounted with the options:
master:/home /home nfs rsize=8192,wsize=8192,actimeo=0,noac,intr 0 0
some output from nfsstat:
Server rpc stats:
calls badcalls badauth badclnt xdrcall
1340341394 0 0 0 0
Server nfs v3:
null getattr setattr lookup access readlink
0 0% 1300536271 0% 13116771 0% 37991 0% 1579 0% 32 0%
read write create mkdir symlink mknod
13134415 0% 13250369 0% 1821 0% 12 0% 22 0% 0 0%
remove rmdir rename link readdir readdirplus
1111 0% 0 0% 291 0% 140 0% 306 0% 0 0%
fsstat fsinfo pathconf commit
20971 0% 20971 0% 0 0% 218321 0%
Client rpc stats:
calls retrans authrefrsh
9509 0 0
Client nfs v3:
null getattr setattr lookup access readlink
0 0% 25 0% 0 0% 2725 28% 2770 29% 2 0%
read write create mkdir symlink mknod
0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
remove rmdir rename link readdir readdirplus
0 0% 0 0% 0 0% 0 0% 159 1% 0 0%
fsstat fsinfo pathconf commit
1914 20% 1914 20% 0 0% 0 0%
C. J. Tsai
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Chung-Jung Tsai on Wed 9/10 16:38 -0400:
> Files written by a f90 program running at master node were not updated
> for the other nodes to see their content correctly. It seems like a
> sync problem.
I believe the sync consistency threshold is one second. Subsecond
coherency cannot be acheived, IIRC. Check the list archives for more
information.
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