[Netkit.users] Migrate the filesystem to Ubuntu

[Olivier Mémin]

Hi all ! 

I really need to use Ubuntu on virtual machines with Netkit. As it is based on Debian, the default Netkit filesystem, I guess it is not an infeasible task. 
Have some of you already tested it ? 

Based on my Google researches, I already tried : 
- to mount and chroot the default filesystem ; 
- to modify the /etc/apt/sources.list file with Ubuntu Karmic Koala repositories ; 
- to install ubuntu-standard package via 'apt-get install ubuntu-standard' ; 
- to umount the modified filesystem. 

The package installation seems OK although there are some minor problems with language variables (LC_ALL and LANGUAGE). 
But when I start a lab (normally working with the default fs), the virtual machines are blocked after theses steps : 
----- 
Locating the bottom of the address space ... 0x10000 
Locating the top of the address space ... 0xc0000000 
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 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 
Adding 24801280 bytes to physical memory to account for exec-shield gap 
MPLS: version 1.962 
----- 

I would really appreciate your advice. 
Does it seem crazy to operate in this way ? 
Would it be better to create my own filesystem despite the risks of this operation presented in the README file ? 

Best regards, 
Olivier. 
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