Re: NFS Mount Point Failed

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> It is possible I'm not remembering it correctly. Some time back I had an
> issue where when I specified the mount point in fstab and manually
> issued the mount the mount would fail (I've forgotten the exact syntax
> of the error) and when I raised a query on this list I thought I was
> told to try nfsvers=1, but as you have said I could be mis-remembering
> it. The other thing that I just found that might be interesting is if I
> specify nfsvers=2 I get the message 'protocol not supported'.
>
> regards,
> Steve
>


It appears that the kernel defaults to no UDP support be set as
default.  The NFS man page has not yet caught up with the disablement
of UDP. and version=2.   The kernel config does indicate V2 is not set
but does not indicate what the default is but also added this option
CONFIG_NFS_DISABLE_UDP_SUPPORT and if not set but it defaults to "Y",
so no UDP since that is not set.

It also seems portmapper still has UDP and version=2 but the kernel
does not have  either vers=2 or UDP (vers=2 possibly disabled because
no UDP, and I seem to remember vers=3 was the first with tcp and
initial it would not work with >255 clients, I worked with a client
that upgrade from 240 nodes, to 260 nodes and starting going over the
limit).  So a lot of the tools and documentation does not match the
current set of kernel config option being used, or someone did not set
the kernel options to enable UDP.
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