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From: Tom Haynes <tdh-8AdZ+HgO7noAvxtiuMwx3w@public.gmane.org>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: linux-nfs@vger.kernel.org
Subject: Re: mount retries
Date: Fri, 02 Oct 2009 21:35:21 -0500	[thread overview]
Message-ID: <4AC6B869.60002@excfb.com> (raw)
In-Reply-To: <FED38E90-C32D-43E8-A0A2-5A37E4BB894F@oracle.com>

Chuck Lever wrote:
>
> The exact retry behavior depends on whether user space or the kernel 
> is trying to do the talking.  NFSv4 and text-based NFSv2/v3 mounts do 
> most of the talking from the kernel.  Text-based mounts do a user 
> space pmap query or two, but the MNT request comes from the kernel.  
> Also, UDP retries a few times, but usually gives up after 30 seconds 
> or so, but TCP can retry the transport connect for over 3 minutes, 
> even before it gets to send any requests at all.
>
> I'm pretty sure I didn't answer your question.

Thanks Chuck, you actually nailed what I didn't ask properly.

The UDP retries being at 30s correlates with what I was seeing.

      reply	other threads:[~2009-10-03  2:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-02 21:45 mount retries Tom Haynes
2009-10-02 22:59 ` Chuck Lever
2009-10-03  2:35   ` Tom Haynes [this message]

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