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From: "Dave Humphreys (Bob)" <dave@bob-the-boat.me.uk>
To: Richard Weinberger <richard@sigma-star.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Network related UML Crashing
Date: Sat, 12 Jan 2013 18:31:38 +0000	[thread overview]
Message-ID: <1492014.5OhtFxJ3yI@vault01> (raw)
In-Reply-To: <20130112105812.4eedc505@spider.haslach.nod.at>

Re: [uml-devel] "Couldn't grant pty"

Now that I have been able to run the Debiam 32 bit root_fs, I have returned to 
the network related crashing.

This is by way of a status update, I will do more to tie down what is required 
to demonstrate the problem as simply as possible.

However:

root@DEB1-32:~# rsync --archive --progress 10.0.10.30:/var/imap/ /var/imap/
The authenticity of host '10.0.10.30 (10.0.10.30)' can't be established.
RSA key fingerprint is ce:e4:0d:88:c0:07:01:8d:10:f8:91:52:b5:4b:e1:53.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.0.10.30' (RSA) to the list of known hosts.
receiving incremental file list
./
.bash_history
        1970 100%    1.88MB/s    0:00:00 (xfer#1, to-check=1005/1007)
config/
config/annotations.db
         144 100%    0.23kB/s    0:00:00 (xfer#2, to-check=1356/1362)
config/deliver.db
           0   0%    0.00kB/s    0:00:00  ------------[ cut here ]------------


This is what happened on the Debian 32 bit system with the 3.8.0-rc3 UML 
kernel.

The DEB1 UML is now completely dead and locked up, no further messages escaped 
after this point.

If I try to kick it with uml_mconsole:

bash-4.1# uml_mconsole DEB1
(DEB1) halt

and nothing more happens.

10.0.10.30 is another 32 bit UML.

DEB1-32 is the Debian UML, with an IP address of 10.0.10.31.

Networking is via mcast.

This behaviour is consistent with what I have found all along.

I have seen the same on a 32 bit UML running on a genuinely 32 bit machine 
that is remote to my current location and which I access via the Internet, so 
the problem arises using real ethernet (via tun-tap) as well as mcast; and in 
a genuine 32 bit environment.

I will try to characterise this more fully, and simplify the method of causing 
failure as much as possible.

I still believe that there is a real problem here, not just me doing something 
stupid.

Regards,
David


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  parent reply	other threads:[~2013-01-12 18:31 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-12  9:55 [uml-devel] "Couldn't grant pty" Dave (Bob)
2013-01-12  9:58 ` Richard Weinberger
2013-01-12 12:07   ` Dave Humphreys (Bob)
2013-01-12 12:34     ` Antoine Martin
2013-01-12 14:29       ` Richard Weinberger
2013-01-12 15:52         ` Dave Humphreys (Bob)
2013-01-12 16:00           ` Richard Weinberger
2013-01-12 17:05             ` Dave Humphreys (Bob)
2013-01-12 22:06               ` Richard Weinberger
2013-01-14 20:42                 ` Dave (Bob)
2013-01-12 18:31   ` Dave Humphreys (Bob) [this message]
2013-01-12 22:11     ` [uml-devel] Network related UML Crashing Richard Weinberger

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