[K12OSN] nbd-server on Centos 6.4

[Joshua Trimm]

The issue may be related to the kernel module include in the client rpm's
(nbd.ko) if its not found in on the client side it won't be able to net
boot.  First mount up your image file as a loopback, chroot into it then
check to see if nbd.ko exists in your modules directory for your kernel:

# ls /lib/modules/`uname -r`/kernel/drivers/block/nbd.ko

Also make sure you have the nbd rpm installed on the server

Note that nbd-3.3 hasn't been tested yet, nbd-2.9.20 is the current
supported version. 

From:  Jaap Bril <jaap at jbril.net>
Reply-To:  "Support schools." <k12osn at redhat.com>
Date:  Fri, 02 Aug 2013 19:04:56 +0200
To:  "Support schools." <k12osn at redhat.com>
Subject:  [K12OSN] nbd-server on Centos 6.4

    
 LS,
 
 I'm having a problem getting ltsp to work with nbd-server on Centos 6.4.
 
 dhcp (different server) is ok; pxelinux.0 as well as vmlinuz.ltsp and
initrd.ltsp arrive on the client.
 
 nbd-server starts and seems ok (expected client-ipaddress, image-file
/opt/ltsp/images/i386.img and file-size mentioned by xinetd)
 
 After that things get hectic (I took quiet off) and eventually go wrong;
 The client-screen blanks and nbd-server stops (exit=1).
 
 I think that the image is ok; I ran ltsp-build-client yesterday and
ltsp-update-image today.
 
 
 How can I definitively check that the image is ok?
 Can I pause the client to get time to read the text?
 
 Any other suggestions?
 
 Jaap
 
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