Comment 4 for bug 1388880

And with swift:

ubuntu@james-page-bastion:~/tools/openstack-charm-testing/trunk⟫ swift upload -S 10000000 kerneltest /boot/initrd.img-4.4.0-96-generic boot/initrd.img-4.4.0-96-generic segment 1
boot/initrd.img-4.4.0-96-generic segment 0
boot/initrd.img-4.4.0-96-generic
ubuntu@james-page-bastion:~/tools/openstack-charm-testing/trunk⟫ swift stat kerneltest boot/initrd.img-4.4.0-96-generic
               Account: AUTH_9736b8ef9ac84824ab6e248455665cbf
             Container: kerneltest
                Object: boot/initrd.img-4.4.0-96-generic
          Content Type: application/octet-stream
        Content Length: 15604860
         Last Modified: Mon, 30 Oct 2017 11:49:24 GMT
                  ETag: "47ecced69b46738eeda009e28c53ce94"
              Manifest: kerneltest_segments/boot/initrd.img-4.4.0-96-generic/1505843367.051525/15604860/10000000/
            Meta Mtime: 1505843367.051525
         Accept-Ranges: bytes
           X-Timestamp: 1509364163.49140
            X-Trans-Id: tx07d94f0c87e84717a404c-0059f711c8
X-Openstack-Request-Id: tx07d94f0c87e84717a404c-0059f711c8
ubuntu@james-page-bastion:~/tools/openstack-charm-testing/trunk⟫ swift post -m "x-object-meta-test1:test1" kerneltest boot/initrd.img-4.4.0-96-generic
ubuntu@james-page-bastion:~/tools/openstack-charm-testing/trunk⟫ swift stat kerneltest boot/initrd.img-4.4.0-96-generic
                 Account: AUTH_9736b8ef9ac84824ab6e248455665cbf
               Container: kerneltest
                  Object: boot/initrd.img-4.4.0-96-generic
            Content Type: application/octet-stream
          Content Length: 0
           Last Modified: Mon, 30 Oct 2017 11:49:35 GMT
                    ETag: d41d8cd98f00b204e9800998ecf8427e
Meta X-Object-Meta-Test1: test1
           Accept-Ranges: bytes
             X-Timestamp: 1509364174.89169
              X-Trans-Id: tx006f1ae51d9142be9e46f-0059f711d4
  X-Openstack-Request-Id: tx006f1ae51d9142be9e46f-0059f711d4

As per original bug report.