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AIX
Very Active NFS and Disk Usage
Post 302517808 by masterpengu on Wednesday 27th of April 2011 09:32:54 PM
04-27-2011
Very Active NFS and Disk Usage
Here is the scenario...
NFS share that is accessed every few minutes by approx 70 systems (AIX 5.3/6.1). Filesystem space is being eaten up rapidly according to df however du numbers really never change. lsof and fuser cannot see any unlinked files on either the NFS server or remote clients. Restarting nfsd does not resolve the issue. However, attempting to umount the underlying JFS2 filesystem fails (device busy) obviously but magically frees up the "used" disk space...
Any thoughts on this?
NFS share that is accessed every few minutes by approx 70 systems (AIX 5.3/6.1). Filesystem space is being eaten up rapidly according to df however du numbers really never change. lsof and fuser cannot see any unlinked files on either the NFS server or remote clients. Restarting nfsd does not resolve the issue. However, attempting to umount the underlying JFS2 filesystem fails (device busy) obviously but magically frees up the "used" disk space...
Any thoughts on this?
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LEARN ABOUT REDHAT
rpc.nfsd
rpc.nfsd(8) System Manager's Manual rpc.nfsd(8) NAME
rpc.nfsd - NFS server process SYNOPSIS
/usr/sbin/rpc.nfsd [-p port] nproc DESCRIPTION
The rpc.nfsd program implements the user level part of the NFS service. The main functionality is handled by the nfsd.o kernel module; the user space program merely starts the specified number of kernel threads. The rpc.mountd server provides an ancially service needed to satisfy mount requests by NFS clients. OPTIONS
-p port specify a diferent port to listen on for NFS requests. By default, rpc.nfsd will listen on port 2049. nproc specify the number of NFS server threads. By default, just one thread is started. However, for optimum performance several threads should be used. The actual figure depends on the number of and the work load created by the NFS clients, but a useful starting point is 8 threads. Effects of modifying that number can be checked using the nfsstat(8) program. SEE ALSO
rpc.mountd(8), exportfs(8), rpc.rquotad(8), nfsstat(8). AUTHOR
Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of others. 31 May 1999 rpc.nfsd(8)