Re: [uml-devel] Something wrong with booting the UML in new kernel

[Blaisorblade <blaisorblade@yahoo.it>]

On Sunday 21 January 2007 03:34, An Ching wrote:
> Hi,
>
> I had recompiled my host kernel with setting the EXT2_FS_SECURITY and
> EXT3_FS_SECURITY in filesystem configuration. My UML is OK before doing
> this, but now I can not boot the UML in the new-recompiled kernel. It just
> went to the step...
>
> [root@RH9 linux-2.6.17]# ./linux root=/dev/sda1 rootflags=/
> rootfstype=hostfs ro con0=fd:0,fd;1 init/bin/sh -l 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
>   - PTRACE_FAULTINFO...not found
>   - PTRACE_LDT...not found
> UML running in SKAS0 mode
> Checking that ptrace can change system call numbers...OK
> Checking syscall emulation patch for ptrace...OK
> Checking advanced syscall emulation patch for ptrace...OK
>
> Just down to this step, and not any response next...
>
> I guessed maybe the kernel of UML didn't support the XATTR  of filesystem
> and then I reconfigured the UML and set EXT2_XATTR, EXT2_FS_SECURITY,
> EXT3_XATTR, EXT3_FS_SECURITY to "Y".
This wouldn't matter, since UML is using hostfs (which does not support XATTR 
at all, to my knowledge) and not ext2/ext3.
> But after I recompiled the kernel of 
> UML and run it,  I  was given the same  message mentioned above.
>
> What should do  next?   Could anybody  give me some advices?

There are few reasons usually for using hostfs, normally using a dedicated 
root_fs is a better solution. And using hostfs on your / can cause trouble to 
both your host and your guest (well, if you boot with init=/bin/sh then there 
are less problems).
-- 
Inform me of my mistakes, so I can add them to my list!
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 


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