Eric Shubert wrote:
Lucian Cristian wrote:
from ESXi to qemu-kvm (there are some howto's but I used clone over
network, for windows is a bit tricky resetting the ide controller) ,
the new server raid interface was not ok for vmware so I had to use
the "real" deal :D, I didn't like esxi because of limited access to
host machine and one time I lost all virtual machines (I don't know
what was the problem), now backup of images is easy and live
migration too, remote manageability is not so cool like vmware but
there is a new network protocol (SPICE) hopefully it will be released
with fedora 14 and made stable soon
I had some errors related to virtualisation on dmesg and some machine
lockup , but after 2.6.32 the errors where gone (opteron supermicro
server, on intel ibm and fujitsu all was ok with stock), now I'm on
vanilla 2.6.34, and maybe I'll switch to 2.6.35 (on production,
fingers crossed :d), the new kernel and qemu can share memory pages
so you can have less memory used by machines, but is harder to get it
compile on centos 5.x
now I have one server clean and maybe I'll try a fedora to see the
performance of the new qemu-kvm and kernel and maybe I'll backport it
to centos if it's worth the trouble
regards
Lucian
Thanks for sharing, Lucian. I see you're on the bleeding edge.
Personally, I like lagging behind a bit sometimes.
As I think I already mentioned, I'll probably try out KVM on COS6
after it's been out for a little while.
One more question. Can you explain to us the difference between
qemu-kvm and the KVM that will be coming out with CentOS 6?
Oh, and there's just a tiny bit (so far) about KVM on the wiki
(http://wiki.qmailtoaster.com/index.php/KVM). It'd be great if you
could add some content there if/when you get a chance. If you'd like
an idea of how you might organize the page, see the one on VMware. You
could do something entirely different if you like though.
Thanks again.
Having spent ~10.000 Eur on one server that I couldn't use with
virtualisation made me bee on bleeding edge (regarding to standard
centos kernel an machine locking) and most important I can afford to
have a bit of down time, usually I'm testing on weekend (when I have the
time).
Kvm is the kernel module and qemu-kvm is the qemu that can use the kvm
kernel module :) because there is qemu that is not "accelerated" by
those modules, libvirt in conjunction with new virt-manager can give you
new options/flexibility (I'm still waiting for timed auto startup of
virtual machines, like the one in vmware). There is a lot of information
in the changelog of those packages.
hopefully I'll have time to look into the wiki and share with others..
regards
Lucian
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