hello

I was bit by the same bug. :-)

Look through my posts in this list from 24. dec till yeasterday.

Today I did some testing again and the guy in heaven _maybe_ started to
like me again.

I disabled TT Mode at all and did a forced static compile with a
2.6.15-rc7 guest kernel without any patches (skas0 mode) and I was able
to powercycle 7 UML guests with up to 500MB ram given to some of them
(1.5Gb in sum) at once without any glitch. I`ll test even more today and
then post a config file.

I hope this does the trick for you too. Please tell us the result.

cheers,
juraj

Am Dienstag, den 27.12.2005, 16:55 +0100 schrieb M. Feenstra:
> Hi,
> 
> I'm experimenting with UML and have 2 UML guests running on a host with 
> 1024M of memory. If I give the UML guests 128M of memory all is fine. If I 
> give it 384 (or even 256) the UML guest boots until "VFS: Mounted root 
> (ext2 filesystem) readonly." and then freezes.. no oops.. nothing.. only 
> thing I can do is kill it.
> 
> I have read in the archive a simular topic in october of this year but 
> didn't find the answer to this issue.
> 
> I run a debian UML kernel       : 2.4.26-3um on the guest
> I run a home-patched skas kernel: 2.6.12.6-skas3-v9-pre7 on the host (debian)
> 
> The debian UML kernel is build using this settings for "General Setup" (so 
> no HIGHMEM for example): 
> #
> # General Setup
> #
> CONFIG_MODE_SKAS=y
> CONFIG_MODE_TT=y
> CONFIG_NET=y
> CONFIG_SYSVIPC=y
> CONFIG_BSD_PROCESS_ACCT=y
> CONFIG_SYSCTL=y
> CONFIG_BINFMT_AOUT=y
> CONFIG_BINFMT_ELF=y
> CONFIG_BINFMT_MISC=y
> CONFIG_HOSTFS=y
> CONFIG_HUMFS=y
> CONFIG_EXTERNFS=y
> CONFIG_HPPFS=y
> CONFIG_MCONSOLE=y
> CONFIG_MAGIC_SYSRQ=y
> CONFIG_NEST_LEVEL=0
> CONFIG_KERNEL_HALF_GIGS=1
> # CONFIG_HIGHMEM is not set
> CONFIG_PROC_MM=y
> CONFIG_KERNEL_STACK_ORDER=2
> CONFIG_UML_REAL_TIME_CLOCK=y
> 
> I set the value /proc/sys/vm/max_map_count to 262144 (should allow to 1G 
> guests right?).
> 
> Any hints on this item???
> 
> Regards,
>  Mark
> 
> 
> 
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