[Casper] Casper failing to deploy base OS package

[Clare Bartlet]

We have been finding that Casper is very unreliable with deploying the  
base OS package - has anyone else seen this happen?

We are in the process of a round of image deployment to our 180 public  
Macs and we have seen that over 10% of the time Casper will fail to  
deploy the base OS.  We currently have one of our sites where 5 out of  
their 14 Macs are repeatedly failing in this way...
Our setup is that we netboot the iMacs in order to image them and the  
sequence that we observe is that Casper says it is doing a block copy  
of the OS (despite the fact that the 'No Block Copy' file is in  
Casper.app/contents/resources), this then fails and Casper formats the  
hard disk and then it should deploy the base OS before doing all the  
application packages however this does not always happen...

We cannot see a pattern to when this occurs -  eg it doesn't seem to  
be related to server load. Sometimes it happens repeatedly on one Mac  
and other times when a Mac is reimaged again all is fine without  
making any other changes.

We know that Casper has been released but it's really not possible for  
us to move to a new Casper version right in the middle of an imaging  
round.

Sent to the list for comment from others please and also to jamf  
support so that we can get help in resolving this problem as soon as  
possible

many thanks
Clare

--------------------------------------------
Clare Bartlet                                     mailto:cpb10 at cam.ac.uk
Macintosh Support                          phone: +44 1223 334723
University of Cambridge Computing Service
New Museums Site, Pembroke Street, Cambridge CB2 3QH

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