SUMMARY STEPS TO REPRODUCE 1. save 80 GB with kbackup to a disk 2. open the tar file 3. OBSERVED RESULT You must wait for 10 mn ! More, after that dolphin warns there is a malformed tar file and display nothing. EXPECTED RESULT a few second to access to a backup contents SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.21.1 KDE Frameworks Version: 5.79.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION kde backup 20.12.2 An easy solution. Save complete and incremental backups each in a folder not in an archive file.
It's unclear for me if kbackup produced an incorrect tar file or not. Can you list the content of the tar file on the command line via tar -tvf filename.tar ?
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Yes I can list the contents of the tar file
Created attachment 136272 [details] the answer of dolphin See the answer of dolphin after several mns.
My wild guess is that this may be a problem with ktar (karchive), if you can list / extract all the contents of that tar file successfully. The tar archive is 80 GB so it probably has a very large number of files inside?
>> The tar archive is 80 GB so it probably has a very large number of files inside? Yes a very large number. consequence : several mns to access to the contents of the archive with Ark. That's why I wish folder instead of archive to store the backup.
Then the conclusion is: it's not a kbackup problem since it produces a correct tar file, which is what it should do. If you want smaller tar archives, you can define the max size per slice in the settings. If you want some completely different way of backing up your files, then kbackup is the wrong solution.
>> If you want some completely different way of backing up your files, then kbackup is the wrong solution. What backup app do you advise ?
To be honest I don't know. For my backup scenario kbackup is the right solution. Did you try to reduce the max slice size ?
I will try.
Is there any log ? It is necessary to be alerted if there are some errors.
kbackup shows all progress and problems it encounters in the right bottom area. What do you think is not shown ?
I don't want to use manually kbackup but with a cron job.
Ah you mean where you can see the output of kbackup when run from cron ? I get the output in a mail from cron. My crontab looks like this: #do (incremental) system backup every day at 3:10 10 3 * * * /root/kbackup-cron where in that script I do: #!/bin/bash eval `dbus-launch --sh-syntax` /usr/bin/kbackup --autobg /root/martin-full.kbp kill $DBUS_SESSION_BUS_PID
Today I made a cron incremental backup. I received the report by mail. I am going to test kbackucup during one week.