[Lustre-discuss] I/O error on clients

[Bernd Schubert]

On Tuesday, July 20, 2010, Christopher J. Morrone wrote:
> On 07/07/2010 01:04 AM, Gabriele Paciucci wrote:
> > Hi,
> > the ptlrcp bug is a problem, but i don't find in the Peter's logs any
> > refer to an eviction caused by the ptlrpc but instead by a timeout
> > during the comunication between a ost and the client. But Peter could
> > make a downgrade to 1.8.1.1 that not suffer by the problem.
> 
> The bug that I describe does not have any messages about the ptlrpcd
> performing evictions.  The server's "I think it's dead, and I am
> evicting it", and other messages about the server timing out on the
> client are the only messages that you will see with the bug that I
> described.
> 
> But like I said, there are many possible reasons for timeouts, so it
> could easily be something else.


For the record, while stress testing Lustre I can easily reproduce evictions 
with any Lustre version. However, it is terribly difficult to debug it without 
additional tools. I have opened a bugzilla for that, but I don't think I will 
have time for those tools any time soon.

https://bugzilla.lustre.org/show_bug.cgi?id=23190


-- 
Bernd Schubert
DataDirect Networks