[OpenAFS] Re: [OpenAFS-devel] OS X 10.5 oddity

Derrick Brashear shadow@gmail.com
Sun, 22 Feb 2009 01:20:36 -0500

This belongs on openafs-info, since there's no code question or
discussion here. Redirecting there.

On Sun, Feb 22, 2009 at 1:11 AM, Joel <hashbang@gmail.com> wrote:
> I'm at a loss of where to even turn to about this problem. I've used
> OpenAFS on OSX for years, but recently I've been having some strange
> issues. At seemingly random points in AFS operations, my client will
> hang and ultimately contact to the fileserver will be lost, then
> restored soon after.
> Going into detail...
> Using the OpenAFS 1.4.8 OSX package, with OSX 10.5.6.
> When the client hangs, dmesg repeats this until the "afs: Lost contact
> with file server..." message:
> in_delayed_cksum_offset: ip_len 51200 (200) doesn't match actual length 214
> which means pretty much what it says, that the length in the packet
> doesn't match the actual on-wire length. It seems to always be 14
> bytes shy (the size of the UDP header??). This packet never makes it
> through, so I assume the client times out waiting for it and triggers
> the "lost contact" state.

You leave out details like what the hardware is. Since that function
may be related to hardware offloading of IP checksumming, it could