[User-mode-linux-user] minimal command-line options for starting the kernel??

[Etienne Tourigny-M. <to...@ir...>]

Hi,

I just tried using linux-2.4.0-test6 with the root_fs_redhat_6.2.
I used the command-line  `./linux-2.4.0-test6 udb0=root_fs_redhat_6.2`
and it doesn't boot up:

tourige@gaia ~/user_linux]% ./linux-2.4.0-test6 udb0=root_fs_redhat_6.2
tracing thread pid = 10008
Linux version 2.4.0-test6-1um (jd...@cc...) (gcc version
egcs-2 19990314/Linux (egcs-1.1.2 release)) #1 Tue Aug 15 13:40:25 EST
2000
On node 0 totalpages: 4096
zone(0): 0 pages.
zone(1): 4096 pages.
zone(2): 0 pages.
Kernel command line: udb0=root_fs_redhat_6.2 root=/dev/ubd0
Calibrating delay loop... 583.27 BogoMIPS
Memory: 16112k available
Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 1024 (order: 1, 8192 bytes)
VFS: Diskquotas version dquot_6.4.0 initialized
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 1024)
Starting kswapd v1.7
pty: 256 Unix98 ptys configured
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: registered device at major 7
loop: enabling 8 loop devices
User-mode Linux network interface 0.005 (eth0)
User-mode Linux network interface 0.005 (eth1)
User-mode Linux network interface 0.005 (eth2)
User-mode Linux network interface 0.005 (eth3)
Initializing stdio console driver
Initializing software serial port version 0
serial line 0 assigned pty /dev/ptyp4
ssl receive thread is pid 10014
Couldn't stat "root_fs" : No such file or directory
devfs: v0.102 (20000622) Richard Gooch (rg...@at...)
devfs: devfs_debug: 0x0
devfs: boot_options: 0x0
ubd0: Can't open "root_fs":
No such file or directory
VFS: Cannot open root device "ubd0" or 62:00
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 62:00


I was wondering what are the MINIMAL options to get it running in a
console

Thank you very much


Etienne Tourigny
a user-mode-linux newbie