a bug in 2.6.24 resulting the client "breaking" ONTAP?

[J. Bruce Fields]

On Fri, May 23, 2008 at 05:50:22PM +0300, Timo Aaltonen wrote:
> 
>  	Hi
> 
>    We are seeing a strange bug which makes all the machines using 
> nfs4+krb5i mounts getting "remote io error" notices when trying to access 
> the mounts.

Is this an intermittent thing, or does it always happen immediately on
first access of the mount?

Is there anything in the system logs?

--b.

> The servers are a two node Netapp cluster with ONTAP 7.2.4, 
> and the problems started last January when I began testing the upcoming 
> Ubuntu 8.04 release. I had two machines set up, and at some point all the 
> machines (also those using a previous release) would break. Shutting down 
> the new machines usually made it work again, but to "fix" the issue I 
> rolled back to nfs3 with no krb and forgot about it.
> 
> So, now the bug has resurfaced again due to new installations using 
> v4+krb5i. Is this something that has been fixed in 2.6.25 or 26-rc's, or 
> should it be a server problem? We've used the setup for two years now 
> without any similar problems, both on Ubuntu 6.06 and 7.04.
> 
> nfs-utils in 8.04 is 1.1.2, kernel 2.6.24.