On Friday 20 October 2006 17:06, Jacques Landru wrote: > Hi, > > >It isn't a known problem, so check your setup, cross-check against a > > non-XEN > > >configuration and report it with the usual level of detail. > > First I have to say, that I am not a linux kernel expert, nor a > programmer. I have the same > problem as Nic James Ferrier. This mail is just a report of my > unsuccessful tries > to run uml virtual machine on top of a xenU virtual machine. > > I tried to play VIMINAL livecd (a VNUML livecd) iso file from a xenU > virtual machine.
That wonderful VNUML project! > The livecd boots with no problem on the xenU virtual machine, and the > viminal kde desktop > starts up like a charm, but I am unable to run the uml virtual machines > embedded on the livecd. > I tested the uml virtual machines on both a real linux host (a > 2.6.17-gentoo-r8-skas3-v9-pre9 kernel) > and the xenU virtual machine (a 2.6.16.26-xenU gentoo kernel). On the > real host, the uml > virtual machine boots up with no problem, on the xenU machine, boot > hangs up with > "Kernel panic - not syncing: start_userspace : expected SIGSTOP, got > status = 256" > (see more details below in the boot trace) Thanks for that, the error above is more important. > As describe on that post > http://www.mail-archive.com/user-mode-linux-user@lists.sourceforge.net/msg0 >3997.html > > I tested several kernel configs trying to have corresponding > CONFIG_HOST_* on uml kernel > and CONFIG_VM_SPLIT_* on xenU. I tested all value (3G,3G_OPT, 2G, 1G). with > CONFIG_PAGE_OFFSET having the same value on both kernels. > Each time, the uml boots on the real host (2.6.17 skas3) and hangs up on > the xenU machine. > On other tests, where CONFIG_HOST_* and CONFIG_VM_SPLIT_* have no > corresponding > values, the uml virtual machine didn't even start on the xenU machine, > just a single "killed" message was displayed. if CONFIG_HOST_* is less than CONFIG_VM_SPLIT it should not show "killed" - please try (as a last chance) setting HOST_* to 1G/3G and VM_SPLIT of xenU to 3G/1G. If that boots, I'll know the direction to follow. > VFS: Mounted root (reiserfs filesystem) readonly. > mapping mmap stub failed, errno = 12 This is the real error. The output of cat /proc/$$/maps on xenU would help. > Kernel panic - not syncing: start_userspace : expected SIGSTOP, got > status = 256 This is caused by that (the diagnostics requires some decoding but it's the followup of errors like the above one). -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
