Migration of QEMU domains
Posted by Fraser Campbell Sun, 21 Jan 2007 04:18:00 GMT
QEMU has to be the king of open source virtualization:
- Xen uses QEMU for device emulation in non-paravirtualized operating systems (HVM)
- KVM uses QEMU, same reason as Xen
- finally the recently open sourced VirtualBox also uses QEMU
Qemu currently does not support any migration capability natively athough Qumranet has added “dead migration” capability to their patched version.
Anthony states that he doesn’t like the approach KVM has taken to migration and goes further to say:
The biggest problem I have with KVM and Xen’s migration is that it uses open TCP ports. This is just such a bad idea.
It is easy to agree with this statement.
Anthony has designed a migration system for QEMU that let’s the user define how the migration happens (for example an encrypted and securely authenticated SSH channel).
Here’s hoping that ideas like this start to filter into Xen down the road, depending on a “private” management network for security isn’t the best option for sure.
Anthony’s original post can be read on his blog here and he includes links to the QEMU patches.
