You have a significant number of dropped connections, as indicated by the high EAGAIN count.
I wouldn't be surprised if the 2.6.16 kernel isn't handling the reconnection correctly and propagating
EIO to the application. There's been a fair amount of client side work in the RPC reconnection
code recently . Can you try with a recent kernel?
A network trace and rpcdebug output would be invaluable when you're able to reproduce this.
- ricardo
On Wed, Jun 4, 2008 at 3:45 PM, Ricardo Labiaga <labiaga@xxxxxxxxx> wrote:
>> Does /var/log/messages show any errors around the same time?
>> In addition to the network trace and rpcdebug on the client, take a look at "nfsstat -d" on the filer.
>> Is the filer dropping the connection? Look for "dropped with EAGAIN" or "dropped from vol offline"
>> in the output. This will help narrow down the problem.
> So, sometimes when somebody deletes a lot of data (like the problem we
> just observed),
> the deleting host, and often other hosts, do report 'filer not
> responding' in the logs.
> However, operations that aren't happening in the delete dir, tend to
> work just fine (for example, iozone could be running and doing pretty
> well)). Further, the most recent time this happened, the host didn't
> report filer not responding.
>
> This is the only EAGAN reference I see:
>
> assist queue (queued, split mbufs, drop for EAGAIN) = (0, 64478612, 94340)
>
> Dave
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