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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Kamen:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thank you for contacting Microsoft regarding your question on deleted objects. A member of protocol documentation team will be in touch soon.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Obaid Farooqi<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Sr. Support Escalation Engineer | Microsoft<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> kamenim@gmail.com [mailto:kamenim@gmail.com] <b>On Behalf Of </b>Kamen Mazdrashki<br><b>Sent:</b> Tuesday, May 18, 2010 7:33 AM<br><b>To:</b> Interoperability Documentation Help; cifs-protocol@samba.org; pfif@tridgell.net<br><b>Subject:</b> Replicating deleted object procedure clarifications<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dear Dochelp,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I am currently trying to refactor Delete object implementation in Samba and I need some help<o:p></o:p></p></div><div><p class=MsoNormal>with algorithm used for deleting objects and how the deletion is replicated to other DCs.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Reference:<o:p></o:p></p></div><div><p class=MsoNormal> ProcessGetNCChangesReply [MS-DRSR] - <a href="http://msdn.microsoft.com/en-us/library/dd207758(v=PROT.13).aspx" target="_blank">http://msdn.microsoft.com/en-us/library/dd207758(v=PROT.13).aspx</a><o:p></o:p></p></div><div><p class=MsoNormal> UpdateObject [MS-DRSR] - <a href="http://msdn.microsoft.com/en-us/library/dd207780(v=PROT.13).aspx" target="_blank">http://msdn.microsoft.com/en-us/library/dd207780(v=PROT.13).aspx</a><o:p></o:p></p></div><div><p class=MsoNormal> Delete Operation [MS-ADTS] - <a href="http://msdn.microsoft.com/en-us/library/cc223480(v=PROT.13).aspx" target="_blank">http://msdn.microsoft.com/en-us/library/cc223480(v=PROT.13).aspx</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Consider following sutiation:<o:p></o:p></p></div><div><p class=MsoNormal>0. We have two DCs configuration.<o:p></o:p></p></div><div><p class=MsoNormal> We have an OU object with following props:<o:p></o:p></p></div><div><p class=MsoNormal> dn: OU=TEST_DELETE_0417,DC=samba,DC=devel<o:p></o:p></p></div><div><p class=MsoNormal> objectGUID: b7f1b90d-d247-45b7-87fb-f6bc916bd729<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>1. We delete this OU on DC1. The state of this object on each dc should be as follows:<o:p></o:p></p></div><div><p class=MsoNormal> DC1:<o:p></o:p></p></div><div><p class=MsoNormal> dn: OU=TEST_DELETE_0417\0ADEL:b7f1b90d-d247-45b7-87fb-f6bc916bd729,CN=Deleted Objects,DC=samba,DC=devel<o:p></o:p></p></div><div><p class=MsoNormal> objectGUID: b7f1b90d-d247-45b7-87fb-f6bc916bd729<o:p></o:p></p></div><div><p class=MsoNormal> isDeleted: TRUE<o:p></o:p></p></div><div><p class=MsoNormal> isRecycled: TRUE<o:p></o:p></p></div><div><p class=MsoNormal> DC2:<o:p></o:p></p></div><div><p class=MsoNormal> dn: OU=TEST_DELETE_0417,DC=samba,DC=devel<o:p></o:p></p></div><div><p class=MsoNormal> objectGUID: b7f1b90d-d247-45b7-87fb-f6bc916bd729<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>2. Replication is triggered from DC1 to DC2.<o:p></o:p></p></div><div><p class=MsoNormal>Now, according to UpdateObject() procedure, we will identify that Object's DN has changed from <o:p></o:p></p></div><div><p class=MsoNormal>"dn: OU=TEST_DELETE_0417,DC=samba,DC=devel" <o:p></o:p></p></div><div><p class=MsoNormal>to "dn: OU=TEST_DELETE_0417\0ADEL:b7f1b90d-d247-45b7-87fb-f6bc916bd729,CN=Deleted Objects,DC=samba,DC=devel".<o:p></o:p></p></div><div><p class=MsoNormal>Hence we will modify object's DN (calling PerformModifyDNOperation() operation).<o:p></o:p></p></div><div><p class=MsoNormal>Which will make this object a Deleted-object right?<o:p></o:p></p></div><div><p class=MsoNormal>While progressing further in UpdateObject() procedure, we will check and see, that 'isDeleted'<o:p></o:p></p></div><div><p class=MsoNormal>attribute value is TRUE, so we shall call RemoveObj() procedure. At this point I am a little bit puzzled as <o:p></o:p></p></div><div><p class=MsoNormal>there are two possible outcomes from this procedure:<o:p></o:p></p></div><div><p class=MsoNormal>1. Object's RDN should be transformed to a delete-mangled RDN. So we should end with an RDN like:<o:p></o:p></p></div><div><p class=MsoNormal> TEST_DELETE_0417\0ADEL:b7f1b90d-d247-45b7-87fb-f6bc916bd72\0ADEL:b7f1b90d-d247-45b7-87fb-f6bc916bd72 right? <o:p></o:p></p></div><div><p class=MsoNormal>2. Or, as the object is already under "Deleted Object" container (moved there by previous call to PerformModifyOperation()),<o:p></o:p></p></div><div><p class=MsoNormal>RemoveObj() procedure should delete it further - i.e. if the object is a Tombstone, it will be completely removed.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Sorry that my description gets so messy.<o:p></o:p></p></div><div><p class=MsoNormal>Basically what UpdateObject() states is that first we should execute PerformModifyOperation() and then RemoveObj().<o:p></o:p></p></div><div><p class=MsoNormal>Which is a little bit confusing, as PerformModifyOperation() will turn the object into a Deleted-object.<o:p></o:p></p></div><div><p class=MsoNormal>Calling RemoveObj() later will actually act on already modified object, so I wonder - how does RemoveObj()<o:p></o:p></p></div><div><p class=MsoNormal>knows that we just converted the object and this object should not be completely removed?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Another possibility is for PeformModifyOperation() to determine that target DN will move the object under <o:p></o:p></p></div><div><p class=MsoNormal>"Deleted Objects" container, and in this case to modify only Attribute values on the object, but not to call<o:p></o:p></p></div><div><p class=MsoNormal>PerformModifyDNOperation() operation?<o:p></o:p></p></div><div><p class=MsoNormal><br>-- <br>CU,<br>Kamen Mazdrashki<br><a href="mailto:kamen.mazdrashki@postpath.com" target="_blank">kamen.mazdrashki@postpath.com</a><br><a href="http://gitweb.samba.org/?p=kamenim/samba.git;a=summary" target="_blank">http://gitweb.samba.org/?p=kamenim/samba.git;a=summary</a><br>-------------------------------------<br>CISCO SYSTEMS BULGARIA EOOD<br><a href="http://www.cisco.com/global/BG/" target="_blank">http://www.cisco.com/global/BG/</a><o:p></o:p></p></div></div></body></html>