Created attachment 732338 [details]
engine.log

* iSCSI/FCP DC with template and VM based on template.
* Open the child VM's device with python to cause VM removal to fail:
[root@orange-vdse ~]# python 
Python 2.6.6 (r266:84292, Oct 12 2012, 14:23:48) 
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> v = open('/dev/<vg name>/<lv name>', "r")
* Try to remove the VM.
* Removal fails for:
Thread-2140::ERROR::2013-04-07 15:36:04,046::dispatcher::67::Storage.Dispatcher.Protect::(run) {'status': {'message': 'Cannot remove Logical Volume: (\'d3842
6a3-fe2d-42ab-800e-0ce7c5ffb95a\', "{\'58d60d63-393e-4b5b-b688-a11e5ccf59b7\': ImgsPar(imgs=[\'750bfe61-34f3-454d-92f8-80fce9419e13\'], parent=\'ae0f4f90-b15
c-4f78-8d3a-7f9b048d2ff9\')}")', 'code': 551}}
* There is no roll-forward in engine, the VM continues to exist.
* Unlock the device and try to remove the VM again.
* Removal fails for:
Thread-2187::ERROR::2013-04-07 15:37:23,671::hsm::1450::Storage.HSM::(deleteImage) Empty or not found image 750bfe61-34f3-454d-92f8-80fce9419e13 in SD d38426a3-fe2d-42ab-800e-0ce7c5ffb95a. {'ae0f4f90-b15c-4f78-8d3a-7f9b048d2ff9': ImgsPar(imgs=['659a325e-bef7-4cad-a859-0549ea04dcad'], parent='00000000-0000-0000-0000-000000000000'), '32d2282e-50ec-4a6e-964a-be518b0abec6': ImgsPar(imgs=['13eb9b31-6a97-48c6-8a1c-d18182bee867'], parent='00000000-0000-0000-0000-000000000000')}
* Since this image now exists in engine and not in VDSM, it is impossible to remove the VM, or the template it's based on, or its domain.