On Wednesday 06 February 2008 03:05:10 pm Jeff Dike wrote: > On Wed, Feb 06, 2008 at 01:48:46PM +0000, David Rye of Road Tech wrote: > > Is it possible to run a 32bit guest on a 64bit host? > > It is, but you need an up-to-date host kernel, as there were host bugs > which broke 32-bit compatibility for UML. I think 2.6.23 on the host > should be fine, but I don't remember exactly when the fixes went in. > > > helper_child - execvp of '/usr/sbin/in.telnetd' failed - errno = 2 > > This means you don't have the uml utilties installed - some distros > have them packaged, otherwise, grab, build, and install > http://user-mode-linux.sourceforge.net/uml_utilities_20070815.tar.bz2 > > Jeff
No it means that I did not have telnet-server-0.17-41.fc8.x86_64.rpm, installed on the host :-( Still can not get a login session on the 32bit UML example. the 64bit example works. After a failed attempt. mount -o loop FedoraCore5-x86-root_fs mnt and looking at the log files. Suggest that mingetty is having problems accessing the device. If I try the same filesystem and UML kernel on a machine with a 32bit VIA C3 processor running Fedora8 32bit, I get a login. The only significant difference I can find in the logs is right near the end of the messages file. when the 32bit machine logs some additional modprobe errors but then goes on to work..... tail section of messages file on 32bit. ====================== Feb 11 15:45:10 localhost kernel: EXT3 FS on ubda, internal journal Feb 11 15:45:10 localhost kernel: line_ioctl: tty0: ioctl TIOCLINUX called Feb 11 15:45:11 localhost last message repeated 11 times Feb 11 15:45:12 localhost modprobe: FATAL: Could not load /lib/modules/2.6.22-rc2/modules.dep: No such file or directory Feb 11 15:45:12 localhost modprobe: FATAL: Could not load /lib/modules/2.6.22-rc2/modules.dep: No such file or directory Feb 11 15:45:12 localhost kernel: line_ioctl: tty0: ioctl TIOCLINUX called Feb 11 15:45:40 localhost modprobe: FATAL: Could not load /lib/modules/2.6.22-rc2/modules.dep: No such file or directory ====================== dmesg 64bit ======== Linux version 2.6.22-rc2 ([EMAIL PROTECTED]) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)) #342 Wed May 23 11:56:49 EDT 2007 On node 0 totalpages: 8192 Normal zone: 64 pages used for memmap Normal zone: 0 pages reserved Normal zone: 8128 pages, LIFO batch:0 Built 1 zonelists. Total pages: 8128 Kernel command line: ubda=FedoraCore5-x86-root_fs con=xterm root=98:0 PID hash table entries: 128 (order: 7, 512 bytes) Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) Memory: 30284k available Calibrating delay loop... 4089.44 BogoMIPS (lpj=20447232) Mount-cache hash table entries: 512 Checking for host processor cmov support...Yes Checking for host processor xmm support...No Checking that host ptys support output SIGIO...Yes Checking that host ptys support SIGIO on close...No, enabling workaround Using 2.6 host AIO NET: Registered protocol family 16 NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 1024 (order: 1, 8192 bytes) TCP bind hash table entries: 1024 (order: 0, 4096 bytes) TCP: Hash tables configured (established 1024 bind 1024) TCP reno registered Checking host MADV_REMOVE support...OK mconsole (version 2) initialized on /root/.uml/BegChl/mconsole Host TLS support detected Detected host type: x86_64 VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (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 Initializing software serial port version 1 ubda: unknown partition table EXT3-fs: INFO: recovery required on readonly filesystem. EXT3-fs: write access will be enabled during recovery. kjournald starting. Commit interval 5 seconds EXT3-fs: recovery complete. EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. line_ioctl: tty0: ioctl KDSIGACCEPT called line_ioctl: tty0: ioctl TIOCLINUX called line_ioctl: tty0: ioctl TIOCLINUX called EXT3 FS on ubda, internal journal messages 64bit ========= Feb 11 10:49:31 localhost kernel: klogd 1.4.1, log source = /proc/kmsg started. Feb 11 10:49:31 localhost kernel: Linux version 2.6.22-rc2 ([EMAIL PROTECTED]) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)) #342 Wed May 23 11:56:49 EDT 2007 Feb 11 10:49:31 localhost kernel: Built 1 zonelists. Total pages: 8128 Feb 11 10:49:31 localhost kernel: Kernel command line: ubda=FedoraCore5-x86-root_fs con=xterm root=98:0 Feb 11 10:49:31 localhost kernel: PID hash table entries: 128 (order: 7, 512 bytes) Feb 11 10:49:31 localhost kernel: Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) Feb 11 10:49:31 localhost kernel: Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) Feb 11 10:49:31 localhost kernel: Memory: 30284k available Feb 11 10:49:31 localhost kernel: Mount-cache hash table entries: 512 Feb 11 10:49:31 localhost kernel: Checking for host processor cmov support...Yes Feb 11 10:49:31 localhost kernel: Checking for host processor xmm support...No Feb 11 10:49:31 localhost kernel: Checking that host ptys support output SIGIO...Yes Feb 11 10:49:31 localhost kernel: Checking that host ptys support SIGIO on close...No, enabling workaround Feb 11 10:49:31 localhost kernel: Using 2.6 host AIO Feb 11 10:49:31 localhost kernel: NET: Registered protocol family 16 Feb 11 10:49:31 localhost kernel: NET: Registered protocol family 2 Feb 11 10:49:31 localhost kernel: IP route cache hash table entries: 1024 (order: 0, 4096 bytes) Feb 11 10:49:31 localhost kernel: TCP established hash table entries: 1024 (order: 1, 8192 bytes) Feb 11 10:49:31 localhost kernel: TCP bind hash table entries: 1024 (order: 0, 4096 bytes) Feb 11 10:49:31 localhost kernel: TCP: Hash tables configured (established 1024 bind 1024) Feb 11 10:49:31 localhost kernel: TCP reno registered Feb 11 10:49:31 localhost kernel: Checking host MADV_REMOVE support...OK Feb 11 10:49:31 localhost kernel: mconsole (version 2) initialized on /root/.uml/BegChl/mconsole Feb 11 10:49:31 localhost kernel: Host TLS support detected Feb 11 10:49:31 localhost kernel: Detected host type: x86_64 Feb 11 10:49:31 localhost kernel: VFS: Disk quotas dquot_6.5.1 Feb 11 10:49:31 localhost kernel: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) Feb 11 10:49:31 localhost kernel: io scheduler noop registered Feb 11 10:49:31 localhost kernel: io scheduler anticipatory registered (default) Feb 11 10:49:31 localhost kernel: io scheduler deadline registered Feb 11 10:49:31 localhost kernel: io scheduler cfq registered Feb 11 10:49:31 localhost kernel: TCP cubic registered Feb 11 10:49:31 localhost kernel: NET: Registered protocol family 1 Feb 11 10:49:31 localhost kernel: NET: Registered protocol family 17 Feb 11 10:49:31 localhost kernel: Initialized stdio console driver Feb 11 10:49:31 localhost kernel: Console initialized on /dev/tty0 Feb 11 10:49:31 localhost kernel: Initializing software serial port version 1 Feb 11 10:49:31 localhost kernel: ubda: unknown partition table Feb 11 10:49:31 localhost kernel: EXT3-fs: INFO: recovery required on readonly filesystem. Feb 11 10:49:31 localhost kernel: EXT3-fs: write access will be enabled during recovery. Feb 11 10:49:31 localhost kernel: kjournald starting. Commit interval 5 seconds Feb 11 10:49:31 localhost kernel: EXT3-fs: recovery complete. Feb 11 10:49:31 localhost kernel: EXT3-fs: mounted filesystem with ordered data mode. Feb 11 10:49:31 localhost kernel: VFS: Mounted root (ext3 filesystem) readonly. Feb 11 10:49:31 localhost kernel: line_ioctl: tty0: ioctl KDSIGACCEPT called Feb 11 10:49:31 localhost kernel: line_ioctl: tty0: ioctl TIOCLINUX called Feb 11 10:49:31 localhost kernel: line_ioctl: tty0: ioctl TIOCLINUX called Feb 11 10:49:31 localhost kernel: EXT3 FS on ubda, internal journal Feb 11 10:49:31 localhost kernel: line_ioctl: tty0: ioctl TIOCLINUX called Feb 11 10:49:32 localhost last message repeated 12 times Feb 11 10:49:32 localhost /sbin/mingetty[956]: tty0: No such file or directory Feb 11 10:49:37 localhost /sbin/mingetty[957]: tty0: No such file or directory Feb 11 10:49:42 localhost /sbin/mingetty[958]: tty0: No such file or directory Feb 11 10:49:47 localhost /sbin/mingetty[959]: tty0: No such file or directory Feb 11 10:49:52 localhost /sbin/mingetty[960]: tty0: No such file or directory Feb 11 10:49:57 localhost /sbin/mingetty[961]: tty0: No such file or directory Feb 11 10:50:02 localhost /sbin/mingetty[962]: tty0: No such file or directory Feb 11 10:50:07 localhost /sbin/mingetty[963]: tty0: No such file or directory Feb 11 10:50:12 localhost /sbin/mingetty[964]: tty0: No such file or directory Feb 11 10:50:17 localhost /sbin/mingetty[965]: tty0: No such file or directory Feb 11 10:50:22 localhost init: Id "c0" respawning too fast: disabled for 5 minutes Yours J. 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