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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