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[Openstack] live_migration only using 8 Mb speed


On 18-08-22 01:57:17, Satish Patel wrote:
> What I need to upgrade, any specific component? 
> 
> I have deployed openstack-ansible 
> 
> Sent from my iPhone
> 
> > On Aug 22, 2018, at 1:06 AM, Matthew Thode <prometheanfire at gentoo.org> wrote:
> > 
> >> On 18-08-22 01:02:53, Satish Patel wrote:
> >> Matthew,
> >> 
> >> Thanks for reply, Look like i don't have this patch
> >> https://review.openstack.org/#/c/591761/
> >> 
> >> So i have to patch following 3 file manually?
> >> 
> >> nova/tests/unit/virt/libvirt/test_driver.py213
> >> nova/tests/unit/virt/test_virt_drivers.py2
> >> nova/virt/libvirt/driver.py
> >> 
> >> 
> >> On Wed, Aug 22, 2018 at 12:42 AM, Matthew Thode
> >> <prometheanfire at gentoo.org> wrote:
> >>> On 18-08-22 00:27:08, Satish Patel wrote:
> >>>> 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
> >>>> 
> >>> 
> >>> Do you have a this patch (and a couple of patches up to it)?
> >>> https://bugs.launchpad.net/nova/+bug/1786346
> >>> 
> > 
> > I don't know if that would cleanly apply (there are other patches that
> > changed those functions within the last month and a half.  It'd be best
> > to upgrade and not do just one patch (which would be an untested
> > process).
> > 

The sha for nova has not been updated yet (next update is 24-48 hours
away iirc), once that's done you can use the head of stable/queens from
OSA and run a inter-series upgrade (but the minimal thing to do would be
to run repo-build and os-nova plays).  I'm not sure when that sha bump
will be tagged in a full release if you would rather wait on that.

-- 
Matthew Thode (prometheanfire)
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