> I am struggling with a DOS condition that I believe is described in this
> thread http://sourceforge.net/mailarchive/message.php?msg_id=30410146 . An
> interrupted negotiation between client and server can cause the nbd-server
> parent process to fail to complete future connection attempts. Restarting
> the nbd-server service will correct the problem but also severs the
> connection for the other 30-45 clients that are connected leaving them with
> unresponsive clients and squashfs errors. I believe this situation is

We are currently using raring version of nbd-server on precise with a small 
patch that prevents nbd-server from crashing because of this. This seems to 
keep it from crashing while a better fix is in the works. We need the named 
exports to work so we didn't try to go that way.

The patch can be found here:

https://github.com/opinsys/opinsys-debs/blob/master/packages/nbd/debian/patches/opinsys-ignore-sigpipe


Happy hacking!

Veli-Matti

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