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<== Date ==> <== Thread ==>

Subject: Re: NFS mount problem from Ubuntu 12.04
From: Michael Davidsaver <mdavidsaver@gmail.com>
To: Mark Rivers <rivers@cars.uchicago.edu>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Sat, 10 Jun 2017 18:11:59 +0200
> bruker@photontest-1:~$ sudo apt-get install nfs-common portmap

> Any idea if the problem is indeed those missing packages,

If you don't have '/sbin/mount.nfs' (from nfs-common) then yes.

> and if so how to install them?

FYI, "portmap" has been replaced by "rpcbind", though this should be
resolved automatically.

If these are missing then likely a problem with the apt repository
config.  Most likely is that somehow the ubuntu.com repo lines have been
removed/commented out.

First see if any errors are shown by:

> apt-get update





On 06/10/2017 04:24 PM, Mark Rivers wrote:
> Folks,
> 
>  
> 
> This is off-topic from epics but I am hoping someone can help.  I have
> an Ubuntu 12.04 machine (brukertest-1) from which I need to mount a
> Centos 7 NFS server (corvette). 
> 
>  
> 
> The Ubuntu machine is running this kernel
> 
> bruker@photontest-1:~$ uname -a
> 
> Linux photontest-1 3.11.0-15-generic #25~precise1-Ubuntu SMP Thu Jan 30
> 17:42:40 UTC 2014 i686 i686 i386 GNU/Linux
> 
>  
> 
> I need to be able to mount the corvette /usr/local and /home from this
> machine.
> 
>  
> 
> I have added this machine to corvette:/etc/exports and run exportfs –a.
> 
>  
> 
> However, when I try to mount corvette I get the following error:
> 
>  
> 
> bruker@photontest-1:~$ sudo mount -t nfs corvette:/usr/local
> /corvette/usr/local
> 
> mount: wrong fs type, bad option, bad superblock on corvette:/usr/local,
> 
>        missing codepage or helper program, or other error
> 
>        (for several filesystems (e.g. nfs, cifs) you might
> 
>        need a /sbin/mount.<type> helper program)
> 
>        In some cases useful info is found in syslog - try
> 
>        dmesg | tail  or so
> 
>  
> 
>  
> 
> When I run dmesg on photontest-1 I see the following:
> 
> [4283236.931503] RPC: Registered named UNIX socket transport module.
> 
> [4283236.931506] RPC: Registered udp transport module.
> 
> [4283236.931507] RPC: Registered tcp transport module.
> 
> [4283236.931508] RPC: Registered tcp NFSv4.1 backchannel transport module.
> 
> [4283236.943157] FS-Cache: Loaded
> 
> [4283236.952960] FS-Cache: Netfs 'nfs' registered for caching
> 
>  
> 
> When I look at syslog on photontest-1 I see the following:
> 
>  
> 
> bruker@photontest-1:~$ sudo tail -1000l /var/log/syslog
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.931503] RPC: Registered
> named UNIX socket transport module.
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.931506] RPC: Registered
> udp transport module.
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.931507] RPC: Registered
> tcp transport module.
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.931508] RPC: Registered
> tcp NFSv4.1 backchannel transport module.
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.943157] FS-Cache: Loaded
> 
> Jun 10 08:43:55 photontest-1 kernel: [4283236.952960] FS-Cache: Netfs
> 'nfs' registered for caching
> 
>  
> 
> I found some documentation on setting up NFS in Ubuntu 12.04 here:
> 
> https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-mount-on-ubuntu-12-04
> 
>  
> 
> It says that I need to install the nfs-common and portmap packages.
> However, when I try to do that I get the following errors:
> 
>  
> 
> bruker@photontest-1:~$ sudo apt-get install nfs-common portmap
> 
> Reading package lists... Done
> 
> Building dependency tree
> 
> Reading state information... Done
> 
> Package portmap is not available, but is referred to by another package.
> 
> This may mean that the package is missing, has been obsoleted, or
> 
> is only available from another source
> 
>  
> 
> Package nfs-common is not available, but is referred to by another package.
> 
> This may mean that the package is missing, has been obsoleted, or
> 
> is only available from another source
> 
>  
> 
> E: Package 'nfs-common' has no installation candidate
> 
> E: Package 'portmap' has no installation candidate
> 
>  
> 
> Any idea if the problem is indeed those missing packages, and if so how
> to install them?
> 
>  
> 
> Thanks,
> 
> Mark
> 
>  
> 
>  
> 


References:
NFS mount problem from Ubuntu 12.04 Mark Rivers

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