2009/9/30 Jay Shah <jay.shah...@gmail.com>:
> Hi Flavio,
Hi Jay,

please remember to reply always to the list! :)

>
> No worries. You help me get setup, so I'm hoping to help you fix this :)
Thanks a lot! :)

>
> What user are you running UML as? If it's not root, can you try
> setting it to 0777 and if that doesn't work just change the
> permissions back.
I run UML as root at the moment. No COW file are used now.

>
> Any errors on the UML boot command (if you can paste a full log right
> up until the eth0 error, even if I cannot help it might help others
> diagnose your problem)?
Here's the complete boot log:
Core dump limits :
        soft - 0
        hard - NONE
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...OK
Checking advanced syscall emulation patch for ptrace...OK
Checking for tmpfs mount on /dev/shm...OK
Checking PROT_EXEC mmap in /dev/shm/...OK
Checking for new_mm and switch_mm support in the host:
        /proc/self/mm ... Failed -
No such file or directory
Checking for the skas3 patch in the host:
  - /proc/mm...not found: No such file or directory
  - PTRACE_FAULTINFO...not found
  - PTRACE_LDT...not found
UML running in SKAS0 mode
Linux version 2.6.24.2 (r...@gentoo) (gcc version 4.1.2 (Gentoo 4.1.2
p1.0.2)) #5 Mon Mar 24 16:46:45 CET 2008
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 129280
Kernel command line: ubd0=rootfs.debian.etch ubd1=swapfs.debian
eth0=tuntap,,,192.168.1.100 mem=512M root=98:0
PID hash table entries: 2048 (order: 11, 16384 bytes)
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
Memory: 505088k available
Mount-cache hash table entries: 256
Checking that host ptys support output SIGIO...Yes
Checking that host ptys support SIGIO on close...No, enabling workaround
net_namespace: 120 bytes
Using 2.6 host AIO
NET: Registered protocol family 16
NET: Registered protocol family 2
Time: itimer clocksource has been installed.
IP route cache hash table entries: 4096 (order: 3, 32768 bytes)
TCP established hash table entries: 16384 (order: 6, 262144 bytes)
TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
TCP: Hash tables configured (established 16384 bind 16384)
TCP reno registered
Checking host MADV_REMOVE support...OK
mconsole (version 2) initialized on /root/.uml/lG3vsa/mconsole
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Initialized stdio console driver
Console initialized on /dev/tty0
console [tty0] enabled
Initializing software serial port version 1
console [mc-1] enabled
 ubda: unknown partition table
 ubdb: unknown partition table
Choosing a random ethernet address for device eth0
Netdevice 0 (9a:db:13:d7:25:c1) : TUN/TAP backend - IP = 192.168.1.100
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
INIT: version 2.86 booting
Starting the hotplug events dispatcher: udevd.
Synthesizing the initial hotplug events...done.
Waiting for /dev to be fully populated...done.
line_ioctl: tty0: unknown ioctl: 0x541e
line_ioctl: tty0: unknown ioctl: 0x5603
Will now activate swap.
swapon on /dev/ubd1
swapon: cannot stat /dev/ubd1: No such file or directory
* Swap activation failed with error code 255.
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3 FS on ubda, internal journal
Setting the system clock..
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
System Clock set. Local time: Wed Sep 30 20:43:39 CEST 2009.
Cleaning up ifupdown...done.
Setting the system clock again..
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
System Clock set. Local time: Wed Sep 30 20:43:39 CEST 2009.
Loading device-mapper support.
Will now check all file systems.
fsck 1.39 (29-May-2006)
Checking all file systems.
Done checking file systems.
A log is being saved in /var/log/fsck/checkfs if that location is writable.
Start setting kernel variables via /proc...
Done setting kernel variables via /proc.
Will now mount local filesystems.
nothing was mounted
Done mounting local filesystems.
Will now activate swapfile swap.
Done activating swapfile swap.
Cleaning /tmp...done.
Cleaning /var/run...done.
Cleaning /var/lock...done.
Running 0dns-down to make sure resolv.conf is ok...done.
Setting up networking...done.
Setting hostname to 'DebianUM'...done.
Configuring network interfaces...SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
SIOCSIFBRDADDR: No such device
eth0: ERROR while getting interface flags: No such device
eth0: ERROR while getting interface flags: No such device
Failed to bring up eth0.
done.
Starting portmap daemon....
line_ioctl: tty0: unknown ioctl: 0x541e
line_ioctl: tty0: unknown ioctl: 0x5603
Initializing random number generator...done.
Recovering nvi editor sessions...none found.
Setting up X server socket directory /tmp/.X11-unix....
Setting up ICE socket directory /tmp/.ICE-unix....
INIT: Entering runlevel: 2
Starting system log daemon: syslogd.
Starting kernel log daemon: klogd.
Starting portmap daemon...Already running..
Starting internet superserver: inetd.
Starting OpenBSD Secure Shell server: sshd.
Starting file alteration monitor: FAM.
Starting deferred execution scheduler: atd.
Starting periodic command scheduler....

> Can you try dropping the eth0= at the command
> line then running a uml_mconsole then adding the config here and
> seeing if there is any error if all else fails?
If I drop the eth0= at the command line, I continue to receive the
following messages:
Configuring network interfaces...SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
SIOCSIFBRDADDR: No such device
eth0: ERROR while getting interface flags: No such device
eth0: ERROR while getting interface flags: No such device
Failed to bring up eth0.


>
> If everything else fails after that, perhaps you can try using tunctl
> (this is the method I have used for years without issues) to create a
> device (like tap0) then attaching it to UML plainly via
> eth0=tuntap,tap0
>
> This reason I prefer the 'creating a device method' is because you can
> use tools like vnstat and bwm-ng to monitor live bandwidth.
Thank you.. I hope the problem doesn't require these two last things.

Flavio

>
> Jay
>
> 2009/9/30 Flavio <fbcyb...@gmail.com>:
>> Hi Jay,
>>
>> Thank you for the reply.
>>
>> Here's the permissions:
>> crw-rw-rw- 1 root root 10, 200 2009-09-30 18:02 /dev/net/tun
>>
>> Flavio
>>
>> 2009/9/30 Jay Shah <jay.shah...@gmail.com>:
>>> Hi Flavio,
>>>
>>> How are the permissions of /dev/net/tun?
>>>
>>> Jay
>>>
>>> 2009/9/30 Flavio <fbcyb...@gmail.com>:
>>>> Hi all,
>>>>
>>>> I have some networking problem.
>>>> Networking inside UML is always worked, but today it suddenly stopped to 
>>>> work.
>>>>
>>>> The command line is the same I've always used:
>>>> linux ubd0=rootfs.debian.etch ubd1=swapfs.debian
>>>> eth0=tuntap,,,192.168.1.100 mem=512M
>>>>
>>>> During the boot of the virtual machine I get these messages:
>>>> Configuring network interfaces...SIOCSIFADDR: No such device
>>>> eth0: ERROR while getting interface flags: No such device
>>>> SIOCSIFNETMASK: No such device
>>>> SIOCSIFBRDADDR: No such device
>>>> eth0: ERROR while getting interface flags: No such device
>>>> eth0: ERROR while getting interface flags: No such device
>>>> Failed to bring up eth0.
>>>>
>>>> What does it happen?
>>>>
>>>> Thank you,
>>>>
>>>> Flavio
>>>>
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>

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