show stopper for us: dev nbd0 clients locking up losing connection with server

[john]

Hm,

That seemed to make it worse. Scott or anybody, do we have any FAQ's
about troubleshooting nbd problems.

Are other folks having trouble with 8.04/NBD ?

Thanks,

John

On Fri, Sep 12, 2008 at 1:45 PM, john <lists.john at gmail.com> wrote:
> <snip>
>>
>> OK, first thing I'd do is add in say 256 megs of NBD swap (assuming you've got
>> the disk space) with something like:
>>
>> NBD_SWAP=True
>
>
> Ok, I assume the proper place for this is /var/lib/tftpboot/ltsp/i386/lts.conf
>
> I added the line you indicated. Now that file reads:
>
>
> LDM_DIRECTX=True
> NBD_SWAP=True
>
>
>>
>> and edit /etc/ltsp/nbdswapd.conf
>>
>> SIZE=256\
>
> Ok, there wasn't already an /etc/ltsp/nbdswapd.conf so I created one
> and added the line you mentioned.
>
> my /etc/ltsp directory now has the following files in it.
>
> dhcpd.conf  nbdswapd.conf  syslogd
>
>
> BTW, Where is the disk space being used? I assume this is on the
> server? Could you explain this a little more fully?
>
>>
>> Also, within the thin client chroot, when they freeze up, can you ctrl-alt-f1
>> and get the login prompt?
>
> The clients are currently completely frozen. I can't get an alternate
> tty, however I am game to try this out if I get one that
> responds.
>
>  If so, here might be an interesting test:
>>
>>
>> Set a root passwd in the chroot:
>>
>> chroot /opt/ltsp/i386
>> passwd
>>
>> Rebuild your image, then if you get a latch-up, c-a-f1 to the text login, go in
>> as root, and use the free command to see if you've run out of ram, and run
>> dmesg to see what the client thinks is going on.
>>
>
>
> Thanks!
>
> John
>