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Kate Monster
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Joined: 13 Jun 2006
Posts: 224
Location: Clarkston, Michigan

PostPosted: Fri May 04, 2007 5:39 am    Post subject: Reply with quote

Truin wrote:
Also, make sure that portmap is running on the client side.


ahh, that was it, didn't know portmap had to be started. thanks! :)
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mikers456
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Joined: 07 Jul 2004
Posts: 36

PostPosted: Fri Jun 29, 2007 5:52 pm    Post subject: Reply with quote

For crashes or hangs, resulting in an "undead" nfs server (nfsd or other processes can't be killed), can't mount or unmount nfs from client side, etc.

I found that reducing the size of wsize or rsize options in your fstab (client side NFS mount options) helped. The NFS manual recommends that you reduce the size to 1024 and increase slowly while testing for each increase. The manual also recommends not making your wsize, rsize bigger than MTU on network. Also some network switches or routers cannot handle large packets -- check that your switch can support the packet size you are using.

Turns out with large wsize or rsize, udp packet fragmentation can either (a) overload your network card driver/kernel or (b) switch/router on network... I was seeing hard nfs server side lockups.

Use "nfsstat -o all" on client to see number of re-transmissions from client side. If excessively high (eg. > 5%) consider lowering the wsize, rsize options.
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will824
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Joined: 03 Jul 2003
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Location: Medellin, Colombia

PostPosted: Sat Jun 30, 2007 7:47 am    Post subject: Really usefull! Reply with quote

Thanks for this Guide, it was really useful for me, as I am still learning :) :D
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SkyLine
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Joined: 11 Oct 2006
Posts: 36

PostPosted: Tue Jan 08, 2008 10:15 am    Post subject: Reply with quote

On client side
Code:

/etc/init.d/nfs start

and
Code:

rc-update add nfs default

not needed.

Only start nfsmount
Code:

/etc/init.d/nfsmount start

and
Code:

rc-update add nfsmout start
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RayDar
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Joined: 16 Apr 2008
Posts: 3

PostPosted: Wed Apr 16, 2008 4:17 am    Post subject: Re: Howto: NFS Server and Client Reply with quote

deffe wrote:

The NFS daemon is required on the client:
Code:

# /etc/init.d/nfs start
# rc-update add nfs default



When I tried this, my machine would freeze at "Starting NFS statd ..." for a few minutes before reporting the following error: ERROR: cannot start nfs as rpc.statd could not start

An ifconfig /a revealed that my "lo" interface didn't have an IP address of 127.0.0.1

This was fixed by starting the net.lo
Code:

/etc/init.d/net.lo start


Of course, I added it to my startup.

Code:

rc-update add net.lo default
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diablo465
Tux's lil' helper
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Joined: 10 Sep 2013
Posts: 142

PostPosted: Mon Jul 21, 2014 1:54 am    Post subject: Reply with quote

Thanks for the post, but I don't know how to use nfs-server in a system with systemd:


Code:
systemctl enable nfs-server
Failed to execute operation: No such file or directory



Code:
ae429-1105 linux # /etc/init.d/nfs start
 * WARNING: nfs is already starting
ae429-1105 linux # rpcinfo -p
   program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
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steveL
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Joined: 13 Sep 2006
Posts: 2959
Location: The Peanut Gallery

PostPosted: Mon Jul 21, 2014 3:46 am    Post subject: Reply with quote

@diablo: then start a thread asking for help, instead of resurrecting one from 6 years ago ;-)
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