git.net

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Openstack] live_migration only using 8 Mb speed


Folks,

I am running openstack queens and hypervisor is kvm, my live migration
working fine. but somehow it stuck to 8 Mb network speed and taking
long time to migrate 1G instance.  I have 10Gbps network and i have
tried to copy 10G file between two compute node and it did copy in 2
minute, so i am not seeing any network issue also.

it seem live_migration has some bandwidth limit, I have tried
following option in nova.conf but it didn't work

live_migration_bandwidth = 500

My nova.conf look like following:

live_migration_uri =
"qemu+ssh://nova@%s/system?no_verify=1&keyfile=/var/lib/nova/.ssh/id_rsa"
live_migration_tunnelled = True
live_migration_bandwidth = 500
hw_disk_discard = unmap
disk_cachemodes = network=writeback