Hi Martin, Thanks for your response.
The system is running smoothly and one client gets powered on (let's call this machine A). When that client receives an IP address using DHCP all other machines die. Usually the machines go blank, or sometimes issue error messages which are: SQUASHFS error: Unable to read directory block........ SQUASHFS error: Unable to read metadata cache entry........ When this happens I see a negotiation error in /var/log/syslog: Mar 23 10:59:14 BFoE01 nbd_server[19452]: Spawned a child process Mar 23 10:59:14 BFoE01 nbd_server[29108]: Negotiation failed/5a: magic mismatch Mar 23 10:59:14 BFoE01 nbd_server[29108]: Exiting. Mar 23 10:59:14 BFoE01 nbd_server[29108]: Modern initial negotiation failed Mar 23 10:59:14 BFoE01 nbd_server[19452]: Child exited with 1 The boot up of machine A continues successfully but all other machines need to be rebooted. I have been trying to generate more logging information but haven't succeeded. I tried using transactionlog in the config file, but that does not log negotiations and my problem seems to be with negotiation. Sorry if I have not made this clear. I am thinking to moving to using NFS instead of NBD, but I am having problems finding good documentation. Any advice? Charles On 23 March 2015 at 14:44, Funke, Martin <m.fu...@olpe.de> wrote: > Just to be sure i unstand your problem correctly. > > > > A clients starts up and when this one tries to get a ip address from the > dhcp server every other client which is currently powered on gets an error > message? > > > > How did you set your Server up? > > > > Best regards > > Martin > > > > Von: Charles Barnwell [mailto:cgbarnw...@gmail.com] > Gesendet: Samstag, 21. März 2015 11:33 > An: Funke, Martin > Cc: ltsp-discuss@lists.sourceforge.net > Betreff: Re: AW: [Ltsp-discuss] NBD crashing > > > > On 20 Mar 2015 06:54, "Funke, Martin" <m.fu...@olpe.de> wrote: >> >> Hi, >> >> i checked my syslog when my client boots up: >> Mar 19 11:02:39 BFoE01 nbd_server[2944]: Spawned a child process Mar 19 >> 11:02:39 BFoE01 nbd_server[28560]: virststyle ipliteral Mar 19 11:02:39 >> BFoE01 nbd_server[28560]: connect from 192.168.0.26, assigned fi le is >> /opt/ltsp/images/i386.img Mar 19 11:02:39 BFoE01 nbd_server[28560]: Can't >> open authorization file /etc/lts p/nbd-server.allow (No such file or >> directory). >> Mar 19 11:02:39 BFoE01 nbd_server[28560]: Starting to serve Mar 19 >> 11:02:39 BFoE01 nbd_server[28560]: Size of exported file/device is 503033856 >> >> I have the same messages and everything works so far. >> >> What I don’t have is: >> >> Mar 19 11:02:45 BFoE01 nbd_server[28567]: Disconnect request received. >> Mar 19 11:02:45 BFoE01 nbd_server[2944]: Spawned a child process Mar 19 >> 11:02:45 BFoE01 nbd_server[2944]: Child exited with 0 Mar 19 11:03:06 BFoE01 >> nbd_server[2944]: Spawned a child process Mar 19 11:03:06 BFoE01 >> nbd_server[28569]: Negotiation failed/5a: magic mismatch Mar 19 11:03:06 >> BFoE01 nbd_server[28569]: Exiting. >> >> How long do you have this issue?` >> >> Best regards >> Martin >> >> -----Ursprüngliche Nachricht----- > > Martin, > > Thanks for that. I am now pretty sure that the problem occurs when I get the > negotiation failure. Any ideas about how to debug more? > > At tyre moment I am restarting nbd_server every night to see if that has an > effect. > > Not sure exacting when it started, I'm trying to find out. > > Charles. ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
