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Old 5th August 2008, 12:07
satimis satimis is offline
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Default Fail to create disk.img

Hi folks,

Ubuntu 8.04 server amd64 - host - headless (w/o X packages)
Ubuntu 6.06 server amd64 - guest - headless (w/o X packages)

Previously I ran;

# qemu-img create -f qcow2 disk.img 10G


# kvm -hda disk.img -cdrom /dev/scd0 -m 512 -boot d

to create a working disk.img. It works on the VM.

But I couldn't create direct on running;

# kvm -hda disk.img -cdrom /dev/scd0 -m 512 -boot d

must be in 2 steps.

Now I tried creating another disk.img but the above steps did not work.

# qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB

# kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2
     =======================|  DirectFB 1.0.1  |=======================
          (c) 2001-2007  The DirectFB Organization (directfb.org)
          (c) 2000-2004  Convergence (integrated media) GmbH

(*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
(*) Direct/Memcpy: Using libc memcpy()
(!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
    --> No such file or directory
(!) DirectFB/FBDev: Error opening framebuffer device!
(!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment variable.
(!) DirectFB/Core: Could not initialize 'system' core!
    --> Initialization error!
Could not initialize SDL - exiting

without "-smp 2" still the same.

I don't know what mistake I have committed. I didn't done anything on the host except running apt-get update/upgrade. Please advise.



I found the cause. It was iptables. After flushing all rules, the problem gone.

# kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2 -vnc :9

$ vncviewer

viewer popup and installation began. After finish it reboots.

However on Xterm-1
it popup ;-
kvm_run: failed entry, reason 65535
kvm_run returned -8

# kvm ubuntu6.06_080805.img -vnc :0

$ vncviewer

viewer starts displaying;
Booting the kernel
Alert! /dev/hdb1 does not exist. Dropping to a shell!

BusyBox v1.01 (Debian 1:1.01-4ubuntu3) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty: job control turned off
Any mistake committed? Please advice. TIA

Remark: AMD dual core CPU

$ cat /etc/rc.local

# Set the default policy to drop
iptables -P INPUT DROP

# Allow existing connections to continue
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

# Allow the server to talk to itself
iptables -A INPUT -i lo -j ACCEPT

# allow all VMware MUI HTTP connections in from anywhere
iptables -A INPUT -p tcp --dport 8222 -j ACCEPT

# allow all VMware MUI HTTPS connections in from anywhere
iptables -A INPUT -p tcp --dport 8333 -j ACCEPT

# allow all VMware Authorization Daemon connections in from anywhere
iptables -A INPUT -p tcp --dport 902 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j ACCEPT
iptables -A INPUT -p tcp --dport 25 -j ACCEPT 
iptables -A INPUT -p tcp --dport 110 -j ACCEPT

# Allow ssh from workstation public IP
iptables -A INPUT -s -p tcp --dport 22 -j ACCEPT

# Allow ssh from workstation public IP
iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
iptables -A INPUT -j LOG


# Set the default policy to drop
#iptables -P OUTPUT DROP

# Allow existing connections to continue
iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A POSTROUTING -t nat -j MASQUERADE

# Allow the server to talk to itself
iptables -A OUTPUT -d -j ACCEPT

# Allow DNS requests out
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT
iptables -A OUTPUT -p icmp --icmp-type echo-request -j ACCEPT

What rule shall I add allowing X forwarding? Shall I do anything on hosts.allow and hosts.deny? TIA


Last edited by satimis; 5th August 2008 at 13:43.
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