NFS - how to tell the mount options

[Waldher, Travis R]

> -----Original Message-----
> From: Rick Stevens [mailto:rstevens at vitalstream.com] 
> Sent: Wednesday, March 31, 2004 10:38 AM
> To: Getting started with Red Hat Linux
> Subject: Re: NFS - how to tell the mount options
> 
> 
> Waldher, Travis R wrote:
> > I forgot where it was...
> >  
> > Where is the file that tells me what a NFS mount used as far as 
> > options
> > goes?  nfsv2 vs v3, cache settings, etc.?
> 
> "man nfs" will give you the available options.  As far as 
> where you specify them at mount time, that's in /etc/fstab.
> 
> > If I don't manually set how I want it to mount, I don't know how to 
> > tell
> > how it did mount.
> 
> "mount" alone should show you which non-default options were 
> actually used.  Those not displayed use the defaults shown in 
> "man nfs":
> 
> 	[root at smtp-01-001 bin]# mount -l -t nfs
> 	netapp2:/VIRTMAIL on /virtmail type nfs
> 		(rw,tcp,hard,noac,rsize=8192,wsize=8192,
> 		nfsvers=3,addr=10.24.1.4)
> 
> The stuff not displayed use the defaults.  The corresponding 
> line in /etc/fstab (wrapped for easier reading) is:
> 
> 	netapp2:/VIRTMAIL     /virtmail      nfs   \
> 		rw,tcp,hard,noac,rsize=8192,wsize=8192,nfsvers=3
> 
> Ok?

Well... Here's the riddle.

How can I tell which version of nfs is being used.  The default
according to the nfs man page is version 2.  I didn't specifically say
use nfsvers2 or 3, so it should have used 2.

Then why are my nfs v3 nfs counters going up when I transfer data?

Client nfs v3:
null       getattr    setattr    lookup     access     readlink
0       0% 31227016  5% 15363112  2% 19036511  3% 387690989  0% 228600
0%
read       write      create     mkdir      symlink    mknod
63      0% 76477074  6% 4455603  0% 102785  0% 1276273  0% 24      0%
remove     rmdir      rename     link       readdir    readdirplus
4114960  0% 168678  0% 10      0% 727     0% 103584  0% 0       0%
fsstat     fsinfo     pathconf   commit
1547    0% 1547    0% 0       0% 4621261  0%

I have about 200 file systems mounted right now, many must be nfsv2,
because that's all the server supports, obviously others decided to
mount up to nfsv3.  BUT, how can I tell.  None of the commands you gave
me are telling me anything, and I never specified in the fstab file
which version of nfs to use.

:confused: