Hi Andreas Andreas Rogge schrieb am Donnerstag, 28. August 2025 um 14:59:15 UTC+2:
Am 27.08.25 um 17:07 schrieb Andreas Grabner: > The File size shown in webui ist 170GB, on sd and recovered the file has > zero Bytes. > The backup takes just a few seconds. The basic file attributes are picked up correctly, thus you see 170 GB. Nevertheless, the FD only picks up a stub-file, which then leads to 0 bytes on restore. I looked into how deduplication on Windows works (at least on the documentation end) and I'm honestly not sure how we're supposed to back something like this up. Basically, Windows deduplication turns the file into a reparse point and removes data from it. When you access the file normally (i.e. without backup semantics) the filesystem will redirect access to the deduplicated data. However, when using backup semantics (like Bareos does) you only get the reparse point and not the data. Could you try to reconfigure your fileset and set the option "Portable = yes"? This should back up the data without backup semantics. While this is doomed to miss a lot of attributes and acl, it should actually pick up the data. With Portable=yes it backups the data. So it is possible to restore to a different system. This would work for me. Also, when you tested a restore, did you restore to the very same file system? Basically, my assumption is that if we back up and recover the reparse point data correctly (I'm not sure we do), you should get the same stub-file recovered and it should point to the same deduplicated data chunks. While this is pointless for back up (you obviously want the data stored and not just references to it), it would be interesting to know. Yes it is pointless but/and Windows is a funny thing. When i restore the "reparse point data" i can access the file it is "normal" with data in it. This also works when restore to an other drive on the Windows host (e.g. C: an D: both works). This was unexpected. I have not tried to delete other files (which hold the Databolcks) to see what is happening. There would be some intresting tests considering the scrubbing, optimization and so on, but i will not invest my time in this. Thanks a lot for your help! I will continue to evaluate bareos. For this one fileset Portable is ok for us. Kind regards Andreas -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to bareos-users+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bareos-users/05a21fac-4b75-437b-9010-bd6934b323c2n%40googlegroups.com.
