Description of problem:
File preservation not working, re-provision fails on 'initiate kickstart' step with error 'Error creating the new RAM disk'. Detailed output of 'rhn_check -vvv' contains root of the cause: initrd image, created by koan, is named as 'initrd.img_koan', but 'merge-rd.sh' is called with 'initrd.img' as a parameter, thus failing.

Version-Release number of selected component (if applicable):
server:
spacewalk-2.2
cobbler.noarch                   2.6.3-1.el6               @epel                
cobbler-epel.noarch              2.0.11-29.el6             @spacewalk

client:
koan.noarch             2.6.3-1.el6     @epel-centos6                           
spacewalk-koan.noarch   2.2.4-1.el6     @spacewalk-client-centos6 

How reproducible:
not sure. in my environment - 100% reproducible, however i dont have any other spacewalk installations to try on.

Steps to Reproduce:
1. create file preservation list
2. create/modify a kickstart, enabling file preservation list from step 1
3. re-provision some machine with a kickstart profile from step 2

Actual results:
re-provision fails on 'initiate kickstart' step with error 'Error creating the new RAM disk'. if machine nevertheless rebooted - kickstart starts with selected profile, however files included in 'file preservation list' are _not_ preserved.

Expected results:
successful kickstart with selected profile, all files from 'file preservation list' preserved.

Additional info:
Related 'rhn_check -vvv' output:

Preserve files! : ['/etc/mongod.conf', '/etc/configsvr.conf', '/etc/mongos.conf']
- looking for Cobbler at http://spacewalk.mydomain.local:443/cobbler_api
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/koan/utils.py", line 568, in __try_connect
    xmlrpc_server.ping()
  File "/usr/lib64/python2.6/xmlrpclib.py", line 1199, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.6/xmlrpclib.py", line 1489, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.6/xmlrpclib.py", line 1253, in request
    return self._parse_response(h.getfile(), sock)
  File "/usr/lib64/python2.6/xmlrpclib.py", line 1387, in _parse_response
    p.feed(response)
  File "/usr/lib64/python2.6/xmlrpclib.py", line 601, in feed
    self._parser.Parse(data, 0)
ExpatError: syntax error: line 1, column 49
- looking for Cobbler at https://spacewalk.mydomain.local:443/cobbler_api
- reading URL: http://spacewalk.mydomain.local/cblr/svc/op/ks/system/localhost.localdomain:1
install_tree: http://spacewalk.mydomain.local/ty/b5hJTnVG
downloading initrd initrd.img to /boot/initrd.img_koan
url=http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/initrd.img
- reading URL: http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/initrd.img
downloading kernel vmlinuz to /boot/vmlinuz_koan
url=http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/vmlinuz
- reading URL: http://spacewalk.mydomain.local/cobbler/images/centos6:1:SpacewalkDefaultOrganization/vmlinuz
- ['/sbin/grubby', '--add-kernel', '/boot/vmlinuz_koan', '--initrd', '/boot/initrd.img_koan', '--args', '"ksdevice=link lang= text ks=http://spacewalk.mydomain.local/cblr/svc/op/ks/system/localhost.localdomain:1 kssendmac ipv6.disable=1 "', '--make-default', '--title=kick1422545220']
- reboot to apply changes
CMD: ['/usr/sbin/merge-rd.sh', '/boot/initrd.img', '/boot/initrd.img', '/tmp/ks-tree-shadow']
D: Sending back response(1, 'Error creating the new RAM disk', {'status': 1, 'stderr': '', 'stdout': 'Usage: /usr/sbin/merge-rd.sh SOURCERD DESTRD /path/to/merge/from\n'}) 

Document URL: 

Section Number and Name: 

Describe the issue: 

Suggestions for improvement: 

Additional information: 


Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info: