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Sync from linux to windows using "create incrementale snapshots" option

pietrob71
in Acrosync for Windows
I need to use Acrosync on windows and sync from a remote folder on linux, to a local folder on windows.
Can use "create incrementale snapshots" option and reduce the size of local backup?
I made a test as so:
  
First snapshot
        On the remote folder there's a 100 MByte file
Second snapshot
        On the remote folder there's the previous 100 MByte file and a new one of 100 MByte

Locally I obtain two snapshots folder:

    The first snapshot folder contains 1 file of 100 MByte
    The second snapshot folder contains 2 file of 100 MByte

At this time, my global local folders size is 300 MByte, and not 200 MByte as aspected with the logic of hard-link.

Comments

  • gchen
    This is how I tested it:

    On a linux machine, I created 'file1' that is 100 MBytes in length.

    I then downloaded the directory with the 'create incremental snapshots' options enabled.  This gave me a subdirectory named '2016-0115-10' on the Windows machine.

    On the linux machine, I created another 100 MByte file named 'file2'.

    Ran the download again.  Now there is a new subdirectory named '2016-0115-11' that contains two files, 'file1' and 'file2'.

    Ran fsutil on 'file1', which clearly showed that 'file1' under '2016-0115-11' was hard-linked to 'file1' under '2016-0115-10'.

    c:\Users\gchen\Documents\AcrosyncTest\hardlinks\2016-0115-11>fsutil hardlink list file1
    \Users\ gchen\Documents\AcrosyncTest\hardlinks\2016-0115-10\file1
    \Users\ gchen\Documents\AcrosyncTest\hardlinks\2016-0115-11\file1

    The log file also showed that only 'file2' was downloaded during the second download.

  • pietrob71
    Thank you. You have clearly answer to my question.

    Now another question:
    After the backup, if I save the folder "\Users\gchen\Documents\AcrosyncTest\hardlinks\" on an external HD and in a second time
    I want to restore from my external HD, the hardlink still works?

    Thanks in advance
    Pietro


  • gchen
    After the backup, if you copy the 'hardlinks' folder to an external HD, I suspect most copy tools won't preserve hard links, and you would get two distinct but identical 'file1' on the external HD.  So the answer is probably no.
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