11-15-2018
Will those 2 NFS boxes have same disk presented or data replication is required sided with NFS ?
What does high IO mean, are you running databases or ?
You do understand that NFS is not a clustered file system.
So writing in same file from multiple nodes will not work as you expect.
Can you elaborate a bit more about the architecture and application and what it does ?
Perhaps glusterfs, HDFS or ISCSI could be a better advice.
Regards
Peasant.
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LEARN ABOUT CENTOS
tapset::nfsd
tapset::nfsd(3stap) tapset::nfsd(3stap)
NAME
tapset::nfsd - systemtap nfsd tapset
DESCRIPTION
nfsd.dispatch
NFS server receives an operation from client
See probe::nfsd.dispatch(3stap)
for details.
nfsd.proc.lookup
NFS server opening or searching for a file for client
See probe::nfsd.proc.lookup(3stap)
for details.
nfsd.proc.read
NFS server reading file for client
See probe::nfsd.proc.read(3stap)
for details.
nfsd.proc.write
NFS server writing data to file for client
See probe::nfsd.proc.write(3stap)
for details.
nfsd.proc.commit
NFS server performing a commit operation for client
See probe::nfsd.proc.commit(3stap)
for details.
nfsd.proc.create
NFS server creating a file for client
See probe::nfsd.proc.create(3stap)
for details.
nfsd.proc.remove
NFS server removing a file for client
See probe::nfsd.proc.remove(3stap)
for details.
nfsd.proc.rename
NFS Server renaming a file for client
See probe::nfsd.proc.rename(3stap)
for details.
nfsd.open
NFS server opening a file for client
See probe::nfsd.open(3stap)
for details.
nfsd.close
NFS server closing a file for client
See probe::nfsd.close(3stap)
for details.
nfsd.read
NFS server reading data from a file for client
See probe::nfsd.read(3stap)
for details.
nfsd.write
NFS server writing data to a file for client
See probe::nfsd.write(3stap)
for details.
nfsd.commit
NFS server committing all pending writes to stable storage
See probe::nfsd.commit(3stap)
for details.
nfsd.lookup
NFS server opening or searching file for a file for client
See probe::nfsd.lookup(3stap)
for details.
nfsd.create
NFS server creating a file(regular,dir,device,fifo) for client
See probe::nfsd.create(3stap)
for details.
nfsd.createv3
NFS server creating a regular file or set file attributes for client
See probe::nfsd.createv3(3stap)
for details.
nfsd.unlink
NFS server removing a file or a directory for client
See probe::nfsd.unlink(3stap)
for details.
SEE ALSO
probe::nfsd.dispatch(3stap), probe::nfsd.proc.lookup(3stap), probe::nfsd.proc.read(3stap), probe::nfsd.proc.write(3stap),
probe::nfsd.proc.commit(3stap), probe::nfsd.proc.create(3stap), probe::nfsd.proc.remove(3stap), probe::nfsd.proc.rename(3stap),
probe::nfsd.open(3stap), probe::nfsd.close(3stap), probe::nfsd.read(3stap), probe::nfsd.write(3stap), probe::nfsd.commit(3stap),
probe::nfsd.lookup(3stap), probe::nfsd.create(3stap), probe::nfsd.createv3(3stap), probe::nfsd.unlink(3stap),
probe::nfsd.rename(3stap), stap(1), stapprobes(3stap)
IBM
--- tapset::nfsd(3stap)