Re: [Xen-users] NFS goes down, XEN hangs

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Mon, Aug 22, 2011 at 9:27 AM, Antonio Pina (antonio.pina)
<antonio.pina@xxxxxxxxxxx> wrote:
> Thank you for your answer.
>
> I understand and agree with your point but it's not the case. As soon as 
> Server1 comes back, the NFS directory becomes available again (ls -l /server1 
> works). The CPU is low as usual and I can use some commands like "xl list",

the default nfs behaviour does that

> but now other commands, like "w" I said before.

You might be able to get better help from other people with more nfs
expertise. My best guess is that "w" is somehow trying to interact
with the process accessing the stale nfs mount (at least "strace w"
shows it's accessing /proc/[pid]/stat), and since the process is
uninterruptible "w" has to wait (thus the appearance of "hang").

-- 
Fajar

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