Lennart_T

I run Retrospect 15.6.1 on Mac OS X 10.11.6. I had my media files (audio and video) on an external USB hard drive connected to my Airport Extreme. I did have some problems with unchanged files being backed up again and again, but I didn't really investigate since I was about to buy a NAS. Now I have a Synology DS218j as a NAS server. The audio and video files were copied over to the NAS, 2.1 TB in total. Then I ran a Retrospect backup with the Synology volume as the source to a media set that I had been using. 1.7 TB of files were backed up. Fair enough, since the metadata probably has changed. Then I immediately tried another backup from the Synololgy to the same media set. Retrospect wanted to backup a whopping 723 GB again. Why? What is going on? Is there a way to get Retrospect to tell me why it thinks it needs to backup all those files and what can I do about it? Bonus question: Is there a utility that can check and correct the file dates (for instance) so they are not somewhere in the future? I have TechTool Pro 11, but that does not seems to do the trick.

I found a solution, which work since this is just a data disk, not a system disk.

Can you post that part of the log?

You should get only one error and that is -530. What do you get?

Hello and thanks for answering. A bit of digging revealed: "ext4" No, I did not. Yes (even within the same second) and yes. Only two files inside an application package (and they are quite small). I will try SSH later. I do have both the original disk I copied over to the NAS as well as backups. Do you think turning up logging in the "secret settings" will show anything useful? I will try a favo(u)rite folder with that. Regards, Lennart

Have you done any changes on the selector "All files"? If "yes", check those changes. If "No", I would check the source disk(s) with CHKDSK or something more powerful.

It is 100% true, but it would have been more clear if the backup set name was within single or double quotes, such as: from Backup Set "Drives C D and V"

That would not help as all preferences, barcode data, catalog files etc would not change. You may want to try this: https://www.retrospect.com/au/support/kb/clearing_library_barcode_information

I do not think so. Retrospect goes a long way making sure it does not overwrite a tape. The label is only for your information, it isn't really used by Retrospect to distinguish different tapes from each other. Either the two tapes has identical labels or the barcode reader acted up and misread one of the labels. (That is my theory. at least.) Your second screen shot does not show more than the first tape. Where are the other two? I remember the bug where Retrospect marked more than one slot as containing a cleaning tape. I do not know if it was fixed as I no longer work for the company that used a tape library. You should be able to mark the slot as NOT containing a cleaning tape, but I no longer remember how. Sorry.

"Source Speed: The speed of the source volume is the single most important factor in determining streaming tape capacity. Each time the buffer in the drive runs out of data to copy, an "underrun" occurs and unused tape streams on by, wasting raw tape capacity. The more underruns, the greater the reduction in capacity." https://www.retrospect.com/au/support/kb/tape_capacity_faq For an offsite backup, you really should perform a disk-to-disk-to-tape backup (as already suggested).

Neither can I, when I look in my own folder. It seems as Retrospect needs to update its user guide.

https://www.retrospect.com/en/documentation/user_guide/mac/management#uninstalling_retrospect

Since there are different methods of accessing the filesystem at program level, it might be that Retrospect uses another method than other programs. (Where the other method(s) does not cause an error, while Retrospect's method does.) The errors does indicate a problem reading the disk. ("can't read, error -1001" "MapError" "can't read data, BackupRead failed") What if you try Clonezilla to clone the disk to another disk? Perhaps the old SSD. Or try another piece of (backup)software that copies all files from the disk.

Your new SSD could be broken. Yes, it happens. You could try to run CHKDSK.

I do not know if Retrospect will see it as a new volume, but it normally recognizes the files on the volume by the FILE metadata and not backup them again.

I say "YES". A proper "verify media" should detect such errors.

Yes, it could but not likely by itself. It looks like you have a hard disk problem, since some files can't be read properly. Test the hard drive, including a surface scan. Page 459, "Verifying Backup Set Media" http://download.retrospect.com/docs/win/v16/user_guide/Retrospect_Win_User_Guide-EN.pdf Maybe you can. Page 454 in the above user guide: "Recreating a Catalog"

Not necessarily. It is just the last link in a long chain of things that can go wrong. See it as the messenger, if you wish. Too bad the catalog file isn't a simple text file. That way you could have opened it in Notepad (for instance) and see if you could make changes and save. By the way, do you have more than one version of Retrospect installed? Both could be running and one could be locking the catalog file from the other. Maybe you have anti-virus software installed that interferes with Retrospect.

Thank You! I didn't know that.

Here is my theory, for what it is worth: When copying from the old G to the new G, you got some incorrect permissions copied as well. Copying to C and back corrected these permissions, by forcing the default C-drive permissions onto the folder (or file).

Yes, indeed. Hopefully(?) it was this bad drive that caused all your problems.

It appears the Microsoft (nowadays?) calls it "finding bad sectors". https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/chkdsk The command is: chkdsk /r

Did that coincide with a Windows Update? ...and with the Retrospect problems starting? Did you do a surface scan also? If not, please do.

I still think something has gone wrong with the permissions. Does Retrospect run as the logged in user, or as another user (set up in Retrospect's Preferences)? If you run (for instance) Notepad or MS Word as the same user as Retrospect is running, can you create and edit a document in the same folder as where the catalog file is?

And the G drive is located where? Internal disk, USB local disk or a network disk?