[Cialug] 'Hung' machine

[Nathaniel Petersen]

You've most likely a dead disk drive.  My guess is that you are using btrfs
or zfs.  Any command that attempt to interact with the file system kernel
module will zombie, making the shell useless.  If you still have screen on
the remote machine, I would create a new shell and read the syslogs and
dmesg to determine which disk failed.

-Nick

On Thu, Jun 16, 2011 at 11:03 AM, L. V. Lammert <lvl at omnitec.net> wrote:

> We have a server in a remote data center that is having problem - I can
> ping it from another machine behind the firewall, but no ssh - hangs at
> negotiating the protocol.
>
> I *do* have an old bash session open from another machine in screen - the
> first two new-lines produced a prompt, however when I tried to do a 'df -h'
> I get no reply - just newlines. Tried <ctl>C (echos), .. <ctl>D (just a
> newline), .. characters & commands (just echo).
>
> Is anyone aware of a way to exploit this 'open' connection? Tried launching
> shell or bash, but nothing except the character echo.
>
>        Thanks!
>
>        Lee
>
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