2002-07-17 14:41:06

by Jarod Beekman

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Subject: Tracking rpc errors 'svc: unknown version (0)'

I upgraded our nfs server from 2.4.9-34 Redhat 7.2 to 2.4.18-5 Redhat
7.3 and I am now seeing 'svc: unknown version (0)' errors. Poking
around on the list and the net tells me that this is a reflection of an
unrecognized rpc request. Is this correct, and if so is there a way to
track down the source and nature of the request? Thanks for your help.

Jarod Beekman
System Administrator
Azusa Pacific University=20


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2002-07-17 15:09:35

by Trond Myklebust

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Subject: Re: Tracking rpc errors 'svc: unknown version (0)'

>>>>> " " == Jarod Beekman <[email protected]> writes:

> I upgraded our nfs server from 2.4.9-34 Redhat 7.2 to 2.4.18-5
> Redhat
> 7.3 and I am now seeing 'svc: unknown version (0)' errors.
> Poking around on the list and the net tells me that this is a
> reflection of an unrecognized rpc request. Is this correct,
> and if so is there a way to track down the source and nature of
> the request? Thanks for your help.

'ethereal' should be able to help you out here.
Just look for a null 'version' field in the RPC header: that should
tell you who and what the offender is.

If I were to hazard a guess, though, I'd expect that you will find
this is a NULL RPC request (i.e. the procedure number is '0') which is
often used in order to probe for whether or not an RPC server is up.

Cheers,
Trond


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2002-07-17 15:27:34

by Benjamin LaHaise

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Subject: Re: Tracking rpc errors 'svc: unknown version (0)'

On Wed, Jul 17, 2002 at 07:41:02AM -0700, Jarod Beekman wrote:
> I upgraded our nfs server from 2.4.9-34 Redhat 7.2 to 2.4.18-5 Redhat
> 7.3 and I am now seeing 'svc: unknown version (0)' errors. Poking
> around on the list and the net tells me that this is a reflection of an
> unrecognized rpc request. Is this correct, and if so is there a way to
> track down the source and nature of the request? Thanks for your help.

Whoops, that's a patch that got lost between 2.4.9-34 and 2.4.18-5. The
message is a null rpc request, and can be safely ignored.

-ben
--
"You will be reincarnated as a toad; and you will be much happier."


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