topic The file locking mechanism implemented with JLan3.7.5 in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/the-file-locking-mechanism-implemented-with-jlan3-7-5/m-p/167153#M120698 <HTML><HEAD></HEAD><BODY><SPAN>We conducted the several test cases on file locking mechanism of JLan3.7.5 in three scenarios with different applications, including MS Office Word2003, Photoshop, OpenOffice. the interesting thing is&nbsp; : there is different result with different application on the file locking. three testing scenarios are:</SPAN><BR /><SPAN>1. Remote Lock/Local Open&nbsp;&nbsp;&nbsp;</SPAN><BR /><SPAN>2. Local Lock/Remote Open</SPAN><BR /><SPAN>3. Remote Lock/Remote Open</SPAN><BR /><BR /><SPAN>here is the results listed below:</SPAN><BR /><SPAN>Application&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RemoteLock/LocalOpen&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LocalLock/RemoteOpen&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RemoteLock/RemoteOpen</SPAN><BR /><SPAN>MS Office Word2003(MNP)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S(Batch oplock granted)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S(Batch oplock granted)</SPAN><BR /><SPAN>MSOffice Word2003(JLan)&nbsp; &nbsp;&nbsp;&nbsp; F(No oplock granted)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(No oplock granted)</SPAN><BR /><SPAN>PhotoShop(MNP)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)</SPAN><BR /><SPAN>PhotoShop(JLan)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(Pessimistic Lock)</SPAN><BR /><SPAN>OpenOffice(MNP)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S(Batch oplock granted)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S</SPAN><BR /><SPAN>OpenOffice(JLan)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; S(No oplock granted)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F(after selection of the file type ,&nbsp;&nbsp; F(No oplock granted)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the file can’t open with a error </SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; coming out.)&nbsp;&nbsp;&nbsp;</SPAN><BR /><BR /><SPAN>*: S: Succeeded;&nbsp; F:Failed</SPAN><BR /><BR /><SPAN>how to explain these interesting test results we got with JLan3.7.5?&nbsp;&nbsp;&nbsp; Hope your reply!</SPAN><BR /><BR /><SPAN>Mionet </SPAN><BR /><BR /><SPAN>James</SPAN></BODY></HTML> Mon, 07 Apr 2008 22:30:11 GMT james 2008-04-07T22:30:11Z The file locking mechanism implemented with JLan3.7.5 https://connect.hyland.com/t5/alfresco-archive/the-file-locking-mechanism-implemented-with-jlan3-7-5/m-p/167153#M120698 We conducted the several test cases on file locking mechanism of JLan3.7.5 in three scenarios with different applications, including MS Office Word2003, Photoshop, OpenOffice. the interesting thing is&nbsp; : there is different result with different application on the file locking. three testing scenario Mon, 07 Apr 2008 22:30:11 GMT https://connect.hyland.com/t5/alfresco-archive/the-file-locking-mechanism-implemented-with-jlan3-7-5/m-p/167153#M120698 james 2008-04-07T22:30:11Z Re: The file locking mechanism implemented with JLan3.7.5 https://connect.hyland.com/t5/alfresco-archive/the-file-locking-mechanism-implemented-with-jlan3-7-5/m-p/167154#M120699 <HTML><HEAD></HEAD><BODY><SPAN>I did similar tests that gave me catastrophic results such as </SPAN><STRONG>data lost</STRONG><SPAN> or </SPAN><STRONG>file deletion</STRONG><SPAN>.</SPAN><BR /><SPAN>Example:</SPAN><BR /><SPAN>Setup:</SPAN><BR /><SPAN>* 1 server with JLAN running (CIFS)</SPAN><BR /><SPAN>* 1 client Windows XP with MsWord </SPAN><STRONG>2002</STRONG><BR /><SPAN>* 1 client Windows XP with MsWord </SPAN><STRONG>2007</STRONG><BR /><BR /><SPAN>Normal beaviour (this sequence work as expected):</SPAN><BR /><SPAN>1. Open a doc file with MsWord </SPAN><STRONG>2007</STRONG><SPAN> (I assume it's locking it)</SPAN><BR /><SPAN>2. Open the same file with MsWord </SPAN><STRONG>2002</STRONG><SPAN> (the file is locked and I can see it in RO)</SPAN><BR /><BR /><SPAN>Unexpected beaviour (resulting with file lost):</SPAN><BR /><SPAN>1. Open a doc file with MsWord </SPAN><STRONG>2002</STRONG><SPAN> (I assume it's locking it)</SPAN><BR /><SPAN>2. Open the same file with MsWord </SPAN><STRONG>2007</STRONG><SPAN> (the file is probably locked by MsWord 2002 but MsWord 2007 open it in RW)</SPAN><BR /><SPAN>3. Modify and save the file opened with MsWord </SPAN><STRONG>2007</STRONG><SPAN> (I think at this time, MsWord 2007 steal the lock)</SPAN><BR /><SPAN>4. Modify and save the file opened with MsWord </SPAN><STRONG>2002</STRONG><SPAN> (MsWord 2002 think it has the lock)</SPAN><BR /><SPAN>Result: MsWord 2002 display an error (something like "Can not save the file") and the file is deleted from the server. It's not visible anymore from MsWord </SPAN><STRONG>2002</STRONG><SPAN> client but it's still visible on the MsWord </SPAN><STRONG>2007</STRONG><SPAN> client. After the network drive are unmapped and mapped again, the file is lost forever.</SPAN><BR /><BR /><SPAN>That situation is not an exception; it append every time this sequence is repeated. Unfortunatly, that's the kind of treatment my WCM have to do.</SPAN><BR /><BR /><SPAN>I hope someone have a solution. Otherwie, I will have to look for an other solution.</SPAN><BR /><BR /><SPAN>Thanks</SPAN></BODY></HTML> Fri, 13 Feb 2009 19:36:16 GMT https://connect.hyland.com/t5/alfresco-archive/the-file-locking-mechanism-implemented-with-jlan3-7-5/m-p/167154#M120699 bbp 2009-02-13T19:36:16Z