Comment 4 for bug 1558061

If I SSH into that machine directly, and run
 $ lxc image delete ubuntu-trusty
 $ time lxc image copy ubuntu:trusty --alias ubuntu-trusty local:
it takes only 5s for the image to actually copy.

However, our logging seems to say
2016-03-17 12:16:02 INFO juju.tools.lxdclient client_image.go:85 copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 5%
2016-03-17 12:16:02 TRACE juju.apiserver apiserver.go:275 <- [4] machine-0 {"RequestId":352,"Type":"Provisioner","Version":2,"Request":"SetInstanceStatus","Params":{"Entities":[{"Tag":"machine-0-lxd-5","Status":"allocating","Info":"copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 5%","Data":null}]}}
2016-03-17 12:16:02 TRACE juju.apiserver apiserver.go:289 -> [4] machine-0 {"RequestId":352,"Response":{"Results":[{"Error":null}]}}
2016-03-17 12:16:02 INFO juju.tools.lxdclient client_image.go:85 copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 6%
2016-03-17 12:16:02 TRACE juju.apiserver apiserver.go:275 <- [4] machine-0 {"RequestId":353,"Type":"Provisioner","Version":2,"Request":"SetInstanceStatus","Params":{"Entities":[{"Tag":"machine-0-lxd-5","Status":"allocating","Info":"copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 6%","Data":null}]}}
2016-03-17 12:16:03 TRACE juju.apiserver apiserver.go:289 -> [4] machine-0 {"RequestId":353,"Response":{"Results":[{"Error":null}]}}
2016-03-17 12:16:03 INFO juju.tools.lxdclient client_image.go:85 copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 7%
2016-03-17 12:16:03 TRACE juju.apiserver apiserver.go:275 <- [4] machine-0 {"RequestId":354,"Type":"Provisioner","Version":2,"Request":"SetInstanceStatus","Params":{"Entities":[{"Tag":"machine-0-lxd-5","Status":"allocating","Info":"copying image for ubuntu-trusty from https://cloud-images.ubuntu.com/releases: 7%","Data":null}]}}

That it is taking 1s for every % of copy being finished. So it appears that maybe we're just being too slow to record the copy progress.