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cpu_clustering.txt
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==================================cpu clustering==================================
1.Disable cpu flag via "-cpu model_name,-flag":
# /usr/libexec/qemu-kvm -M rhel6.3.0 -cpu Opteron_G3,-nx,-kvmclock ...
2.Export cpu flag via "-cpu model_name,+flag":
# /usr/libexec/qemu-kvm -M rhel6.3.0 -cpu Opteron_G3,+nx,+kvmclock ...
3.List supported cpuid via "-cpu ?cpuid":
# /usr/libexec/qemu-kvm -cpu ?cpuid
4.List detail summary for CPU model via "-cpu ?dump"：
# /usr/libexec/qemu-kvm -cpu ?dump
5.List all CPU definitons via "-cpu ?model"：
# /usr/libexec/qemu-kvm -cpu ?model
6.Check the flags which host don't support via "-cpu model_name,check":
# /usr/libexec/qemu-kvm -M rhel6.3.0 -cpu Opteron_G3,check ...
7.remove the swap partition:
# swapoff -a
# vim /etc/fstab
...
/dev/mapper/vg_amd61725121-lv_root / ext4 defaults 1 1
UUID=7740548a-ae95-4741-9c53-a05b244d6df6 /boot ext4 defaults 1 2
/dev/mapper/vg_amd61725121-lv_home /home ext4 defaults 1 2
#/dev/mapper/vg_amd61725121-lv_swap swap swap defaults 0 0 <------------note here!
...
# lvremove -f /dev/vg_amd61725121/lv_swap
# lvextend -L +127G /dev/mapper/vg_amd61725121-lv_home
# umount /home
# resize2fs -f /dev/mapper/vg_amd61725121-lv_home
# mount /dev/mapper/vg_amd61725121-lv_home /home
delete the "LVM_LV=vg_amd61725121/lv_swap" form /boot/grub/grub.conf
8.install guest via NFS strong.
# showmount -e storage.bos.redhat.com
Export list for storage.bos.redhat.com:
/vol/cobbler/ns2.bos.redhat.com ns2.bos.redhat.com,netapp-admin
...
/vol/engineering 10.16.255.2,10.16.36.51,10.16.101.57,10.16.36.78,10.16.101.63,10.16.48.0/22
/vol/backups 10.16.255.2,10.16.76.0/22,10.16.96.0/22,172.16.52.225,10.16.120.0/24
# mount storage.bos.redhat.com:/vol/engineering /opt/
# ls /opt/devarchive/redhat/rel-eng/RHEL6.3-20120509.1/6.3/Server/x86_64/os/isolinux/
boot.msg initrd.img isolinux.cfg splash.jpg vmlinuz
grub.conf isolinux.bin memtest vesamenu.c32
CLI:# /usr/libexec/qemu-kvm ... -monitor stdio -kernel /opt/devarchive/redhat/rel-eng/RHEL6.3-20120509.1/6.3/Server/x86_64/os/isolinux/vmlinuz -initrd /opt/devarchive/redhat/rel-eng/RHEL6.3-20120509.1/6.3/Server/x86_64/os/isolinux/initrd.img
Installation Method: NFS directory
NFS server name: storage.bos.redhat.com
Red Hat Enterprise Linux directory: /vol/engineering/devarchive/redhat/rel-eng/RHEL6.3-20120509.1/6.3/Server/x86_64/os/