File Management: Removing of files from Server2 IF the same file is removed from Server1.


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# 1  
File Management: Removing of files from Server2 IF the same file is removed from Server1.

Hi Folks,

I have a requirement of file management on different servers.

Source Server is SERVER-A.

Two servers will fetch files from SERVER-A: SERVER1 and SERVER2.

4th SERVER is SERVER-B, It will fetch files from SERVER1. If SERVER1 goes DOWN, SERVER-B will fetch pending files from SERVER2(no duplicity).

Suppose, Server1 has 4 files file1/2/3/4 (It fetched it from SERVER-A) and SERVER2 also 4 files file1/2/3/4(it also fetched it from SERVER-A). There is no SYNC between SERVER1 and 2.

Now SERVER-B will fetch file1/2 from SERVER1 and it will delete same. So SERVER1 has now file3/4. SERVER1 goes down.
So SERVER-B will start picking file from SERVER2(SERVERB will be manually pointed to SERVER2), but it should only pick file3/4 as file1/2 were already picked.

I need a mechanism by using which - If SERVER-B deletes a file from SERVER1, then it also get deleted from SERVER2 - NOTE SERVER-B is not capable to do this, so this has to be done from SERVER1 end. If file1/2 is removed from SERVER1, then it should delete it from SERVER2.

Please let me know if more clarification is required.

I think, RSYNC is one of the way, but requirement is limited.

Thanks to all in advance.

Raza Ali
# 2  
Pls show how and where "SERVER-B ... will delete same". Will all files 1 - 4 be deleted from server1 if all went well? Will they also be deleted from server2 if all went well? Does server-B have a list of files to copy? A list of files done and to be deleted?


Also, pls indicate how "this has to be done from SERVER1" if server1 is down?
# 3  
Hi RudiC,

Thank you for reverting.

Pls show how and where "SERVER-B ... will delete same".: either delete OR move to another directory.

Will all files 1 - 4 be deleted from server1 if all went well?: YES

Will they also be deleted from server2 if all went well?: YES, this is what we want to avoid duplicity(if SERVER1 goes DWON, SERVER-B will be pointed to SERVER2 and it should pick only those files which are not picked from SERVER1).

Does server-B have a list of files to copy? A list of files done and to be deleted?: NO - SERVER-B knows a directory on SERVER1 from where it will pick files and either delete it or ARCHIVE it to another directory.

SERVER-A(In fact it combination of 6 SERVERs - but not relevant to us) is generating lots of files, these files are pulled by SERVER1 and SERVER2 separately.

SERVER1 and SERVER2 are at two sites for redundancy.

SERVER-B picks files from SERVER1 and IF SERVER1 goes down it should pick files from SERVER2(but it should not pick the files already picked from SERVER1 - To avoid duplicity).

SERVER-B is another party - I need to check with them, Still please provide suggestion based on your assumption(It will delete or move to another directory).

Thank you.
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