Re: [BUG?] Maybe NFS bug since 2.6.37 on SPARC64

Chuck Lever
2011-11-03T21:16:55Z

On Nov 3, 2011, at 5:11 PM, Jim Rees wrote:

> Trond Myklebust wrote:
>
>> [ 442.666622] NFS: failed to create MNT RPC client, status=-60
>> [ 442.666732] NFS: unable to mount server 137.226.167.241, error -60
>> [ 442.666868] VFS: Unable to mount root fs via NFS, trying floppy.
>> [ 442.667032] VFS: Insert root floppy and press ENTER
>>
> Error 60 is ETIMEDOUT on SPARC, so it seems that the problem is
> basically the same one that you see in your 2.6.32 trace (rpcbind:
> server 137.226.167.241 not responding, timed out) except that now it is
> a fatal error.
>
> Any idea why the first RPC calls might be failing here? A switch
> misconfiguration or something like that perhaps?
>
> Wasn't there a change in the way nfs mount options are handled by the kernel
> for nfsroot about the time of 2.6.39? Something about changing from default
> udp to tcp maybe?

There was a change, but it was changed back to UDP because of problems like this. Behavior in 3.0 or the latest 2.6.39 stable kernel may be improved.

--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com