Nick Lunt wrote:
Hi
kernel-xen-2.6.18-92.el5
xen-libs-3.0.3-64.el5
xen-3.0.3-64.el5
We have a RHEL 5.2 host running a RHAS 2.1 guest OS. I cannot get the
guest to see more than 4GB RAM.
The server has 8 GB RAM. I have allocated 800M to the host and 7168MB to
the guest.
However the guest is only seeing 4GB.
Here is my xen config file for the guest:
name = "fsprof1"
uuid = "5d10ad03-4604-355e-5d8e-c9d8f5486178"
maxmem = 7168
memory = 7168
vcpus = 7
builder = "hvm"
kernel = "/usr/lib/xen/boot/hvmloader"
boot = "c"
pae = 1
acpi = 1
apic = 1
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-dm"
sdl = 0
vnc = 1
vncunused = 0
keymap = "en-us"
vncdisplay = "5"
disk = [ "phy:/dev/vgxen/lvol00,hda,w", ",hdc:cdrom,r" ]
vif = [ "mac=00:16:3e:77:ad:ba,bridge=xenbr0",
"mac=00:16:3e:7a:82:0e,bridge=xenbr1,script=vif-bridge" ]
serial = "pty"
Here is the kernel entry from grub.conf on the host:
kernel /xen.gz-2.6.18-92.el5 dom0_mem=800M dom0_max_vcpus=1
module /vmlinuz-2.6.18-92.el5xen ro root=/dev/vg00/lvol00
module /initrd-2.6.18-92.el5xen.img
Here is the kernel entry from grub.conf on the guest:
kernel /vmlinuz-2.4.9-e.57smp ro root=/dev/hda8 mem=7168M
initrd /initrd-2.4.9-e.57smp.img
Is there any reason why the guest can only see 4GB ?
My first guess is that it's because you are running kernel-smp.
the RHAS 2.1 Kernel that supports more than 4GB of RAM is:
kernel-enterprise-2.4.9-e.57.i686 "The Linux Kernel compiled with
options for machines with more than 4 Gigabyte of memory."
https://rhn.redhat.com/rhn/software/packages/details/Overview.do?pid=287793
--
Sam
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