On Tue, 14 Nov 2006, Jose Calhariz wrote:
Can you get tcpdump from the client's point of view? Basically, at some
point the client is marking the server down, I assume. The question is on
the basis of what.
I can imagine what is happening. Can I ask some questions?
Asking that was itself a question :)
If they
are explained somewhere, please point where.
What the client see when the file server is:
- Locking a volume to do a vos clone or vos backup?
RW? RO? Locking is a vldb concept. Clients don't care. But taking a volume
offline causes VBUSY replies. But a clone can be done basically without a
period of inavailability, and a backup is just a special clone.
- When a volume is being salvaged?
Here it's offline and you get VBUSY til it comes back, if it's one of
several ROs you can use another.
- When the fileserver is doing a weekly restart?
VRESTARTING/VBUSY
Look in src/viced/afsfileprocs.c, starting with
/* The volume we want may not be attached yet because
* the volume initialization is not yet complete.
All of this should be dealt with by clients. That's the point.
Derrick
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