[libvirt-users] Adjust disk image migration (NBD)
Joaquim Barrera
jbarrera at ac.upc.edu
Fri Feb 14 09:40:37 UTC 2014
Hi all,
As I am doing some tests with qemu, I realized that the way it does
'migrate -i tcp:DEST:444' is not the same as 'libvirt migrate
--copy-storage-inc'. Basically qemu uses the same stream as RAM
migration and libvirt takes advantage of NBD transfer.
With virsh migrate-setspeed I observed that one can only control the
transfer throughput of RAM, but not disk synchronization. At least this
is what I can see in bmon when doing a migration with incremental copy.
The question is: Am I missing something or it is not implemented?
Thank you guys!
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