[OpenAFS-devel] 50 second fetch-data?

[Jeffrey Altman]

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Jim Rees wrote:

> Having looked at several of these traces, I notice the following common
> attributes:
> 
> - Happens the first time the client tries to talk to a server after a period
> of inactivity.
> 
> - Usually happens on the same server each time, or at least the same server
> several times in a row.
> 
> - Delay time in seconds seems to be fixed for a particular server, but
> varies from server to server, anywhere from 14 to 90 seconds.
> 
> To sum up, here are the symptoms:
> 
> - client sends a request to a file server it hasn't talked to in a while
> - client and server trade acks every ten seconds
> - server replies after a delay of 14-90 seconds
> 
> If you are seeing these symptoms, please send me tcpdump traces.

How many IP addresses has this client used to speak with the server(s)
in question?

Are the tcpdumps taken from the server side?  If so, are there any
WhoAreYou queries being sent between the start of the delay and the
finish?

If so, 1.3.87 does not contain the fix for the UUID to IP address
mapping problems in which an IP address gets reused by a second or
third client and the file server merges all three clients into one.
This was fixed in 1.4.0-rc1.

Jeffrey Altman

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