I have been using UML for while with good results, but this lastest 
issue has got me stumped.  I put together a UML jail with a perl 
wrapper.  It starts running as root and calls compartment to do the 
chroot, change user, and run the UML.  It runs just fine from the 
command line, but it does not run from a crontab or if I connect it to a 
"button" or rc.local.  I checked the environment but have been careful 
not to use anything from the enviroment.  The UML is basically fedore 9 
(I think).  the UML kernel is 2.6.26, gcc 4.3.0 20080428 redhat 4.3.0-8. 
running in SKAS0.  The host is 2.6.27.19-170.2.35.fc8  I fc10 also 
exhibits the same startup issues.

The UML bootup messages stops at VFS: mounted root (ext2 filesystem) 
readonly.  The next message "Welcome to Fedora" never appears.

The UML process seems to hang using 98% cpu time (from top).

Some memory parameters are: virt 256, res 9532, SHR 9332, mem .3%.

A normal run (from the command line) is virt 256M, resm 43, shr 43, mem 
1.2%.  The script is suid and I do change to the root user (real & eff) 
inside of the perl script.

I also tried running it from  rc.local, but no luck.

Any ideas?

thanks,

Mark





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