Hi all,
I want to implement live-migration of a highly available VM but I cannot
use shared storage.
The -b option to the migrate command already allows for copying the
block device (locally stored raw file) and that is exactly what I want.
This worked in my experiments but the VM is unreachable (CPU halted?)
while the block device is copied, which is unacceptable for my use-case.
Is there a way to copy the block device while the VM is running (copy on
read or such)?
The LiveBlockMigration page in the qemu wiki [1] mentions that some of
this is already implemented, but I cannot find any of it in the latest
qemu-kvm.
Any pointers?
Thanks for your suggestions.
[1] http://wiki.qemu.org/Features/LiveBlockMigration
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