Waiting for the test builds to be complete and testable (likely tmrw)
before continuing.
** Description changed:
+ [Impact]
+
+ * unable to use util storage users (like virt-clone) to process iso files
+ through qemu-img
+
+ * an example is "virt-clone -o test-vm -n cloned-vm --auto-clone"
+
+ * Fix by backporting upstream fix
+
+ [Test Case]
+
+ * UVT Based test
+ $ uvt-simplestreams-libvirt sync release=xenial arch=amd64
+ $ uvt-kvm create test-vm release=xenial arch=amd64
+ $ virsh destroy test-vm
+ $ virt-clone -o test-vm -n cloned-vm --auto-clone
+
+ [Regression Potential]
+
+ * This fix is upstream a while now, so it should be fairly safe.
+ In general any user of virStorageBackendCreateQemuImgCmdFromVol could
+ be affected (that is the function we change the behavior).
+ It's purpose is to convert a volume to a qemu-img call (to clone it).
+ Without the fix some image types fail.
+ - users cloning type iso today fail, this is fixed by the change
+ - the change does not effect other types than "iso"
+ - there is only one user of this function (in the same file, so not too
+ much alternative ways to invoke we have to consider).
+
+ [Other Info]
+
+ * n/a
+
+ ----
+
Cloning a uvt VM fails with error: Unknown driver 'iso'
To reproduce:
uvt-simplestreams-libvirt sync release=xenial arch=amd64
uvt-kvm create test-vm release=xenial arch=amd64
virsh destroy test-vm
virt-clone -o test-vm -n cloned-vm --auto-clone
Which results in:
WARNING The requested volume capacity will exceed the available pool space
when the volume is fully allocated. (8192 M requested capacity > 3898 M
available)
- Allocating 'cloned-vm.qcow'
|
8.0 GB 00:00:01
+ Allocating 'cloned-vm.qcow'
|
8.0 GB 00:00:01
ERROR Couldn't create storage volume 'test-vm-ds-clone.qcow': 'internal
error: Child process (/usr/bin/qemu-img convert -f iso -O iso
/var/lib/uvtool/libvirt/images/test-vm-ds.qcow
/var/lib/uvtool/libvirt/images/test-vm-ds-clone.qcow) unexpected exit status 1:
qemu-img: Could not open '/var/lib/uvtool/libvirt/images/test-vm-ds.qcow':
Unknown driver 'iso'
'
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https://bugs.launchpad.net/bugs/1729858
Title:
virt-clone fails with: Unknown driver 'iso'
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