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Linux virtualization

Posted on 2013-12-15
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Last Modified: 2013-12-25
I am running redhat virtualization.  qemu.  I copied two img files from /var/lib/libvirt/images directory. I also copied server.xml file from /etc/libvirt/qemu. When I tried to import this image on another redhat server, I don't see an option where i can insert this xml file. How do i port the same configuration on other server.


is qemu paravirtulization?
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Question by:ittechlab
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6 Comments
 

Author Comment

by:ittechlab
ID: 39720143
what is KVM?
what is qemu?
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Author Comment

by:ittechlab
ID: 39720297
how KVM and XEN works in RHEL 6?

Is XEN loaded with the kernel?
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Accepted Solution

by:
Seth Simmons earned 167 total points
ID: 39720871
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LVL 40

Assisted Solution

by:noci
noci earned 166 total points
ID: 39721672
please checkout:
libvirtd
virsh
 - dumpxml
 - create
 - migrate    (offline with copy-all).

man libvirtd
man virsh   (search for dumpxml & create from file etc).
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LVL 27

Assisted Solution

by:skullnobrains
skullnobrains earned 167 total points
ID: 39726602
i can't help you much with libvirt but if you run "ps -auxww | grep kvm" or "ps -auxww | grep qemu", you should see the actual command that is run. this command contains something like "... -hda /path/to/disk/image"

if you copy the disk image to another system, and run the same command, changing the path to the disk image to the location where you copied the new one, your vm should fire up

---

qemu is initially a processor emulator for developpers who want to develop for example arm software on amd64 machines. it evolved into a full-blown virtual machine software in which guests do not need to know they are virtualised in order to run. it is historically slower than other vm software because of the above and the fact it runs in userland. to adress the latter, a kernel module was added by the author a few years afterward. kvm is a linux-specific qemu derivative that is basically qemu running with the kernel module and a couple of optimisations such as directIO that mainly address linux-specific performance and licence problems
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LVL 62

Expert Comment

by:gheist
ID: 39732687
(ROFL) Linux licencing issues....

noci is right...

Redhat will ignore or chew around your support request because as a loyal customer you are expected to buy RHEV manager...
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