Use the nfsstat command to display the NFS client and server statistical information, to reset the
statistical information to zero, to display NFS mount point information,
or to set the debug status.
The following nfsstat command displays the NFS and RPC statistics
for the NFS client:
nfsstat -c
The following nfsstat command resets the NFS and RPC statistics
for the NFS server and client to zero. Only the root user may use
this option:
nfsstat -z
You may also
use this command as follows:
- To only reset the client side statistics, use nfsstat
-cz
- To only reset the z/OS NFS server(s) side statistics , use nfsstat
-sz
The following nfsstat command displays the RPC statistics
of both the NFS Client and the NFS server(s):
nfsstat -r
You may also use this command as follows:
- To only display the client side RPC statistics, use nfsstat
-cr
- To only display the server(s) side RPC statistics , use nfsstat
-sr
The following nfsstat command displays the NFS statistics of both
the NFS Client and the NFS server(s):
nfsstat -n
You
may also use this command as follows:
- To display the NFS statistics of only the client, use nfsstat
-cn
- To display the NFS statistics of only the server(s), use nfsstat
-sn
To display NFS version-specific information, use
the following values with an nfsstat command option:
- 2
- NFS version 2
- 3
- NFS version 3
- 4
- NFS version 4
For example, to display the NFS version 3 statistics
of the z/OS NFS Client and the z/OS NFS server(s), enter:
nfsstat -cs3
Figure 1 displays both z/OS NFS Server
and Client NFSv3 statistics, assuming that the LPAR has one z/OS NFS
Server (with the StartUpProcedure name of MVSNFS) and one z/OS NFS
Client.
Figure 1. Displaying NFS
Server and Client NFSv3 statistical information$ /usr/lpp/NFS/nfsstat -3
GFSC857I z/OS Network File System Server : (MVSNFS)
Server NFSv3:
calls badcalls
20019 0
null getattr setattr lookup access
0 0% 0 0% 753 4% 9123 45% 2424 12%
readlink read write create mkdir
208 1% 1058 5% 941 5% 488 2% 118 0%
symlink mknod remove rmdir rename
312 1% 0 0% 1214 6% 119 0% 725 4%
link readdir readdirplus fsstat fsinfo
412 2% 419 2% 0 0% 1508 7% 1 0%
pathconf commit
1 0% 195 1%
GFSC857I z/OS Network File System Client :
Client NFSv3:
calls badcalls
20035 0
null getattr setattr lookup access
0 0% 0 0% 754 4% 9124 45% 2427 12%
readlink read write create mkdir
208 1% 1058 5% 948 5% 488 2% 118 0%
symlink mknod remove rmdir rename
312 1% 0 0% 1214 6% 119 0% 725 4%
link readdir readdirplus fsstat fsinfo
412 2% 419 2% 0 0% 1509 7% 2 0%
pathconf commit
2 0% 196 1%
Unicode Support service is used.
Figure 2 shows the output from the nfsstat command
using the -r option to display the remote procedure call (RPC) statistics
for the NFS client.
Figure 2. Displaying NFS client rpc statistical informationUSER1:/u/user1:> nfsstat -r
Client rpc:
calls badcalls retrans timeout qfull
107 0 0 0 0
lossconn
0
Unicode Support service is used.
In this example:
- Operand
- Description
- calls
- Specifies the total number of RPC calls sent.
- badcalls
- Specifies the total of RPC calls rejected by a server.
- retrans
- Specifies the number of times an RPC call had to be retransmitted.
- timeout
- Specifies the number of times an RPC call timed out.
- qfull
- specifies the number of times an RPC call had to be delayed due
to insufficient resources.
- lossconn
- specifies the number of times an RPC call had to be retransmitted
on a new TCPIP connection.
Figure 3 shows the output from the nfsstat command
using the -nc option to display the NFS statistics
for the NFS client.
Figure 3. Displaying NFS
client NFS statistical informationUSER1:/u/user1:> nfsstat -nc
Client NFSv2:
calls badcalls
71 0
null getattr setattr root lookup
0 0% 1 1% 0 0% 0 0% 68 96%
readlink read writecache write create
0 0% 0 0% 0 0% 0 0% 0 0%
remove rename link symlink mkdir
0 0% 0 0% 0 0% 0 0% 0 0%
rmdir readdir fsstat
0 0% 1 1% 1 1%
Client NFSv3:
calls badcalls
10 0
null getattr setattr lookup access
0 0% 0 0% 0 0% 0 0% 0 0%
readlink read write create mkdir
0 0% 0 0% 0 0% 0 0% 0 0%
symlink mknod remove rmdir rename
0 0% 0 0% 0 0% 0 0% 0 0%
link readdir readdirplus fsstat fsinfo
0 0% 0 0% 5 50% 3 30% 1 10%
pathconf commit
1 10% 0 0%
Client NFSv4:
calls badcalls
18 0
null access close commit create
0 0% 2 5% 0 0% 0 0% 0 0%
delegpurge delegreturn getattr getfh link
0 0% 0 0% 9 21% 4 9% 0 0%
lock lockt locku lookup lookupp
0 0% 0 0% 0 0% 4 9% 0 0%
nverify open openattr open_cfm downgrade
2 5% 0 0% 0 0% 0 0% 0 0%
putfh putpubfh putrootfh read readdir
12 28% 0 0% 2 5% 0 0% 4 9%
readlink remove rename renew restorefh
0 0% 0 0% 0 0% 0 0% 0 0%
savefh secinfo setattr setclid clid_cfm
0 0% 0 0% 0 0% 2 5% 2 5%
verify write rlse_lockowner
0 0% 0 0% 0 0%
Unicode Support service is used.
In this example:
- Operand
- Description
- calls
- Specifies the total number of NFS calls sent.
- badcalls
- Specifies the total of NFS calls rejected by a server.
Figure 4 shows the output from nfsstat command
using the -s option to display ALL of the z/OS NFS Server (RPC,
NFSv2, NFSv3, NFSv4) statistical information.
Figure 4. Displaying
all of the z/OS NFS Server (RPC, NFSv2, NFSv3, NFSv4) statistical
information# /usr/lpp/NFS/nfsstat -s
GFSC857I z/OS Network File System Server : (MVSNFS)
Server RPC:
calls badcalls nullrecv badlen xdrcalls
69130 0 0 0 0
dupreqs
0
Server NFSv2:
calls badcalls
26678 0
null getattr setattr root lookup
0 0% 3519 13% 264 1% 0 0% 9616 36%
readlink read writecache write create
208 1% 4148 15% 0 0% 3647 14% 487 2%
remove rename link symlink mkdir
1212 4% 724 3% 412 1% 312 1% 118 0%
rmdir readdir fsstat
119 0% 388 1% 1504 6%
Server NFSv3:
calls badcalls
20019 0
null getattr setattr lookup access
0 0% 0 0% 753 4% 9123 45% 2424 12%
readlink read write create mkdir
208 1% 1058 5% 941 5% 488 2% 118 0%
symlink mknod remove rmdir rename
312 1% 0 0% 1214 6% 119 0% 725 4%
link readdir readdirplus fsstat fsinfo
412 2% 419 2% 0 0% 1508 7% 1 0%
pathconf commit
1 0% 195 1%
Server NFSv4:
calls badcalls
22433 0
null access close commit create
0 0% 8109 8% 1039 1% 189 0% 430 0%
delegpurge delegreturn getattr getfh link
0 0% 0 0% 28423 30% 9559 10% 412 0%
lock lockt locku lookup lookupp
1028 1% 59 0% 1038 1% 7878 8% 145 0%
nverify open openattr open_cfm downgrade
2707 3% 1041 1% 0 0% 6 0% 0 0%
putfh putpubfh putrootfh read readdir
22843 24% 0 0% 1 0% 1138 1% 1686 2%
readlink remove rename renew restorefh
208 0% 1331 1% 724 1% 1 0% 1334 1%
savefh secinfo setattr setclid clid_cfm
2054 2% 0 0% 752 1% 1 0% 1 0%
verify write rlse_lockowner
0 0% 1180 1% 15 0%
cb_null cb_compound cb_getattr cb_recall
0 0% 0 0% 0 0% 0 0%
Figure 5 shows the output from the
nfsstat command using the -m option to display the server and path
name of each NFS mounted file system.
Figure 5. Displaying NFS
mounted file system information# nfsstat -m
mvshost1:"/hfs/sj/sjpl" is mounted on /sj/sjpl/host1 filesystem NFS_MNT1
mvshost1:"/hfs/sj/sjpl2" is mounted on /sj/sjpl/host2 filesystem NFS_MNT2
Figure 6 shows the output from the
nfsstat command using the -m option to display the server name, path
name, and attributes of mount point /mnt using
the version 3 protocol with secure(upd).
Figure 6. Displaying NFS
mounted file system information with secure(upd) (Versions 2 and 3
protocol only )# tso -t "mount type (NFS) filesystem(nfs1) mountpoint('/mnt') parm('mvshost1:/hfs/home/hain,secure(udp),vers(3)')"
mount type (NFS) filesystem(nfs1) mountpoint('/mnt') parm('mvshost1:/hfs/home/hain,secure(udp),vers(3)')
# nfsstat -m /mnt
server mvshost1
path /hfs/home/hain,secure(udp),vers(3)
hard vers(3) proto(udp) secure(udp)
timeo(7) retrans(3) rpcbind(y) accesschk(y)
delim(NA) xlat(n) cln_ccsid(1047) srv_ccsid(819)
convserv(LRE) stringprep(n) llock(y)
rsize(32768) wsize(32768) readahead(8) delaywrite(16)
acregmin(3) acregmax(60) acdirmin(30) acdirmax(60)
datacaching(y) attrcaching(y) retry(10) dynamicsizeadj(y)
Figure 7 shows the output from the
nfsstat command using the -m option to display the server name, path
name, and attributes of mount point /mnt using
the version 4 protocol with a public mountpoint.
Figure 7. Displaying NFS
mounted file system information with public mountpoint (Version 4
protocol only )# tso -t "mount type(NFS) filesystem(nfs1) mountpoint('/mnt') parm('sjvm5151:/hfs/u/public,public')"
mount type(NFS) filesystem(nfs1) mountpoint('/mnt') parm('sjvm5151:/hfs/u/public,public')
# /usr/lpp/NFS/nfsstat -m /mnt
server sjvm5151
path /hfs/u/public,public
hard public vers(4) proto(tcp)
timeo(7) retrans(3) rpcbind(y) accesschk(y)
delim(NA) xlat(n) cln_ccsid(1047) srv_ccsid(819)
convserv(LRE) stringprep(n) llock(n)
rsize(32768) wsize(32768) readahead(8) delaywrite(16)
acregmin(3) acregmax(60) acdirmin(30) acdirmax(60)
datacaching(y) attrcaching(y) retry(10) dynamicsizeadj(y)
z/OS Network File System Guide and Reference
Copyright IBM Corporation 1990, 2014