Thanks for your immediate answer. It helped me solving the problem, and the following is just for information.
Am Mittwoch, 10. Januar 2007 00:58 schrieb Blaisorblade: > On Tuesday 09 January 2007 17:05, Sten Heinze wrote: > Sorry, post at least the output of linux --version (i don't have an idea if > it is a 2.4 or 2.6 one). I assumed that my UML guest is the last user-mode-linux deb package is enough, sorry, but to be exactly: $ linux --version 2.6.18 $ apt-show-versions |grep user-mode-linux user-mode-linux/testing uptodate 2.6.18-1um-2 > > $ rootstrap root_fs > > > > or after creating the fs with > > > > $ linux single con0=fd:0,fd:1 con=pts root=/dev/root rootflags=/ > > rootfstype=hostfs ubd1=root_fs init=/usr/lib/rootstrap/builder > > devfs=nomount > > [...] > > VFS: Mounted root (hostfs filesystem) readonly. > > > > The guest stops after this without a login prompt. [...] > > Additionally to that the guest uses 100% of my host cpu until I stop it > > with a halt from uml_mconsole. > > This means it is hung. However, the command line you post may make sense to > create the root fs, not to get a login prompt. So for me it's unclear > whether the root fs was created (you can give a look by loop-mounting the > rootfs, after rootstrap finished), or not. A file root_fs is created, but I'm unable to mount itwhich is created with Debians rootstrap. But I was able to mount the downloaded Fedora rootfs: # ls /mnt/ # mount -o loop root_fs /mnt mount: you must specify the filesystem type # mount -o loop ./FedoraCore5-x86-root_fs /mnt # ls /mnt/ bin dev home lost+found mnt proc sbin srv tmp var boot etc lib media opt root selinux sys usr # umount /mnt/ > To boot it, then, the command line should be like: > linux con0=fd:0,fd:1 con=pts ubd0=root_fs devfs=nomount > or even > linux ubd0=root_fs > if you can accept the defaults. With the knowledge of the working Fedora rootfs I downloaded the Fedora UML guest from http://user-mode-linux.sourceforge.net/new/ (same location where this rootfs is from) and tried to boot it: host kernel without skas-patch: $ cat /proc/version Linux version 2.6.18.5-sh-pentiumm ([EMAIL PROTECTED]) (gcc version 4.1.2 20061028 (prerelease) (Debian 4.1.1-19)) #1 SMP PREEMPT Tue Dec 12 10:26:27 CET 2006 $ ./linux-2.6.19-rc5 ubd0=FedoraCore5-x86-root_fs [...] Checking for the skas3 patch in the host: - /proc/mm...not found - PTRACE_FAULTINFO...not found - PTRACE_LDT...not found UML running in SKAS0 mode Linux version 2.6.19-rc5 ([EMAIL PROTECTED]) (gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)) #24 Wed Nov 8 12:05:48 EST 2006 [...] VFS: Mounted root (ext3 filesystem) readonly. mapping mmap stub failed, errno = 12 Kernel panic - not syncing: start_userspace : expected SIGSTOP, got status = 256 host kernel with skas-patch: $ cat /proc/version Linux version 2.6.18.5-sh-pentiumm-skas3-v9-pre9 ([EMAIL PROTECTED]) (gcc version 4.1.2 20061028 (prerelease) (Debian 4.1.1-19)) #1 SMP PREEMPT Sun Jan 7 23:48:13 CET 2007 $ ./linux-2.6.19-rc5 ubd0=FedoraCore5-x86-root_fs [...] Checking for the skas3 patch in the host: - /proc/mm...found - PTRACE_FAULTINFO...found - PTRACE_LDT...found UML running in SKAS3 mode Linux version 2.6.19-rc5 ([EMAIL PROTECTED]) (gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)) #24 Wed Nov 8 12:05:48 EST 2006 [...] VFS: Mounted root (ext3 filesystem) readonly. Again, this hung with 100% cpu usage on the host. Same result if I try to boot the Fedora rootfs with the Debian UML guest. Booting root_fs gives: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0) > For a start, http://uml.nagafix.co.uk/ can be a good site. It includes both > binary kernels and pre-built images of various sizes. So I tried this website, downloaded the Debian-3.1-x86-root_fs tried to boot it with the Debian UML guest - an it worked. Booting this Debian-3.1-x86-root_fs with the Fedora UML guest worked as well. So it seems that Debian rootstrap isn't creating working filesystem images. But that doesn't matter, I wanted to create my own images anyway. So I can say: problem solved. Thank you for your help! Sten ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
