Op woensdag 16 juli 2014 12:01:54 schreef Santiago Villafuerte: > Hello > > I am running Linux 2.6.31 on an iMX25 from Freescale. We have the nbd-server > binary (2.9.23 apparently) and we run this command: > > /usr/local/bin/nbd-server 9000 /dev/sda1 > > > If an ethernet interface is active in Linux (eth0 or usb0), the nbd-server > stays alive and netstat shows the LISTENING status of the 9000 port: > > Active Internet connections (servers and established) > Proto Recv-Q Send-Q Local Address Foreign Address State > tcp 0 0 0.0.0.0:9000 0.0.0.0:* LISTEN > > > However, when there is no available interface up in the system (only > localhost -loopback), and the nbd-server is started, it won't stay active > at all. The netstat -al command does not show the 9000 port as active.
So, it looks like that's a bug which only triggers when you want to do oldstyle negotiation. The "tests on the train" that I talked about were invalid, because I forgot that I have a tap0 interface active at all time for communication with virtual machines. Of course that shouldn't happen; I can't look at it in detail right now, but I have a fairly good idea where the problem most likely is. However, the workaround is fairly simple: Don't use oldstyle negotiation, use newstyle negotiation. That's a good idea for more reasons than just making your problem go away: - It's easier to use on the client side (you need to remember an export name rather than a port number) - It will continue working (oldstyle has been deprecated for a fair while now, and I'm seriously considering dropping support for it some time soon) To be able to use newstyle, all you need to do is create a config file and start nbd-server without arguments. There's a few examples in the README file that show you how to do it. Regards, -- It is easy to love a country that is famous for chocolate and beer -- Barack Obama, speaking in Brussels, Belgium, 2014-03-26 ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
