random clients stall out at Error: Ioctl/1.1a failed: Bad file descriptor

v-gudmk gudmk at hotmail.com
Tue Dec 9 00:51:16 GMT 2008


I had the same problem some clients worked some didn't.  Finally I tried
disabling NBD and enabling NFS as described here: 
http://doc.ubuntu.com/edubuntu/edubuntu/handbook/C/customizing-thin-client.html
http://doc.ubuntu.com/edubuntu/edubuntu/handbook/C/customizing-thin-client.html 
. I followed the instructions under "However, some people still want to use
NFS. Fortunately, it's easy to switch back to NFS, if it's so desired:".

Now my Dell OptiPlex GX1 client comes up, finally.  I realize this is just a
workaround, there's something wrong in the NBD setup but I couldn't figure
it out.  I'm using Ubuntu intrepid 8.10.

Regards,
Guðmundur


Tom Wolfe wrote:
> 
> Hi again,
> 
> I'm now having problems with a few seemingly random clients that do not 
> boot up but fail at the following:
> 
> on tty8:
> * Starting basic networking
> * Starting kernel event manager
> * Loading hardware drivers
> * Loading kernel modules
> * Loading manual drivers
> * Setting up LTSP Client
> Disconnecting: que, disconnect, sock, done
> [	27.484772] nbd0: Receive control failed (result -32)
> 
> on tty1:
> IP-Config: eth0 hardware address ... etc. etc.
> 
> address: 192.168.100.31 broadcast: 192.168.100.255 netmask: 255.255.255.0
> gateway: 192.168.100.254 dns0: 192.168.192.12 dns1: 0.0.0.0
> domain: morleyschool.ed
> rootserver: 192.168.100.254 rootpath: /opt/ltsp/i386
> filename: /ltsp/i386/nbi.img
> Negotiation: ..size = 156428KB
> bs=1024, sz=156428
> Kernel call returned: Broken pipe Reconnecting
> Negotiation: ..size = 156428KB
> Error: Ioctl/1.1a failed: Bad file descriptor
> 
> ----
> I get the tty1 error on all machines even ones that succeed in booting up 
> (I'm using one of those right now in fact). But the ones that fail stop 
> with the message above (tty8). There doesn't seem to be any rhyme or 
> reason to which clients fail -- for example, a few Dell Optiplex GX115 
> work, a few don't; a few IBM Netvista work, a few don't.
> 
> Any advice?
> 
> Regards,
> Tom Wolfe
> 
> ---
>       Tom Wolfe, Technology Coordinator 	twolfe at sawback.com
>       Stoney Educational Authority	tel: (403) 881-2755
>       Box 238, Morley AB, T0L 1N0	fax: (403) 881-2793
> Morley Community School | Chief Jacob Bearspaw School | Ta-otha School
> 
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