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- Content .- Fans (29) .- Knowledge Base  . 

Kup Backup System


KDE Archiving/Backup

Score 89%
Kup Backup System

Kup Backup System

Kup Backup System

Minimum required   KDE 4.x
Downloads:  1731
Submitted:  Dec 9 2011
Updated:  May 14 2015


Kup is created for helping people to keep up-to-date backups of their personal files. Connecting a USB hard drive is the primary supported way to store files, but saving files to a server over a network connection is also possible for advanced users.

When you plug in your external hard drive Kup will automatically start copying your latest changes, but of course it will only do so if you have been active on your computer for some hourse since the last time you took a backup (and it can of course ask you first, before copying anything).
In general Kup tries to not disturb you needlessly.

There are two types of backup schemes supported, one which keeps the backup folder completely in sync with what you have on your computer, deleting from the backup any file that you have deleted on your computer etc. The other scheme also keeps older versions of your files in the backup folder. When using this, only the small parts of your files that has actually changed since last backup will be saved and therefore incremental backups are very cheap. This is especially useful if you are working on big files. At the same time it's as easy to access your files as if a complete backup was taken every time; every backup contains a complete version of your directories. Behind the scenes all the content that is actually the same is only stored once. To make this happen Kup runs the backup program "bup" in the background, look at https://github.com/bup/bup for more details.

One important note is that bup will work regardless of which filesystem is used on the external drive. You can use NTFS or FAT32, unlike some other backup solutions which require hard links to work!

What the Kup backup system consists of
  • Configuration module, available in your system settings. Here you can configure backup plans, what to include, where to store the backup and how often. You can also see the status for the backup plans here.

  • A small program running in the background. It will monitor to see when your backup destination is available, schedule and run your backup plans. It has a system tray icon that shows up when a backup destination is available.

  • Kioslave for accessing bup archives. This allows you to open files and folders directly from an archive, with any KDE application.

  • A file browsing application for bup archives, allowing you to locate the file you want to restore more easily than with the kioslave. It presents a merged view: inside each saved folder you can see all the files it ever contained (well, that has been backed up at least). Select a file and you can see which different versions of this file that exists in the bup archive. You can open and view the files from here and it also helps you restore files or folders.

  • Detailed list of features
  • backup types:
    - Synchronized folders with the use of "rsync".
    - Incremental backup archive with the use of "bup"

  • backup destinations:
    - local filesystem path, monitored for availability. That means you can set a destination folder which only exist when perhaps a eSATA harddrive or a network shared drive is mounted and Kup will detect when it becomes available.
    - external storage, like usb hard drives. Also monitored for availability.

  • schedules:
    - manual only (triggered from tray icon popup menu)
    - interval (suggests new backup after some time has passed since last backup)
    - usage based (suggests new backup after you have been active on your computer for some hours since last backup).

  • Needed backup programs

    To actually create backups of your data you will need either "bup" or "rsync" installed. They
    provide the implementations for the two different types of backups that Kup supports.

    Helping out
    If you want to help out with translation, check out
    https://www.transifex.com/projects/p/kup/. There you can see the current status of all current languages and also request a new language to be added!

    If you feel like helping out with coding, please have a look at the code and the list of issues at the github page:

    Please report any issues at the github page!

    If you do test new features that are not in a released version yet, please let me know if it works or not. This project is still small enough that it is very useful to get feedback on any testing done.


    Kup Version 0.6.0
    - Ported the whole application to KDE Frameworks 5.
    - Small bugfix for detecting problem with write permission for the backup destination.
    - Please note that there are not so many other applications ported yet, so looking at files directly from backup archive (without restoring the files first) can be a problem. Applications based on KDE libraries version 4 will not be able to peek inside a bup backup archive. If you need that, keep using 0.5.1 instead.
    - The default version linked from here is still 0.5.1, packages and source code for 0.6.0 is available at https://build.opensuse.org/package/show/home:simper:kup/kup-kf5
    - Ubuntu packages are available at https://launchpad.net/~martin-loschwitz/+archive/ubuntu/kup/+files/kup_0.6.0-2_amd64.deb

    Kup Version 0.5.1
    - Bug fix for source selection: there was a situation where the folder selection collapsed and could not be expanded when dealing with hidden folders, this has now been fixed.
    - Expand to show selected hidden folders when enabling "show hidden folders".
    - Add ".local/share/Trash" as a default exclude for new backup plans.
    - Change how includes and excludes are shown in the source selection, hopefully this way it should be clearer what will be backed up.
    - Add an error message, correct some texts, update all translations. Contains big improvements to polish, german, italian and portugese translation.

    Kup is now available in 12 languages, 7 of them are complete translations! The remaining 5 are about 70% translated.

    Kup Version 0.5.0
    - Add option to generate recovery information that can be used to fix broken bup backup archive.
    - Add option to do integrity testing of bup archive every time a new backup is taken. In case something is broken and you are generating recovery information it will ask you if you want to try repairing the files.
    - Now the configuration dialog warns about dataloss when using rsync in combination with fat32 or ntfs.
    - Keep a log file of last backup job, can be viewed from system tray menu.
    - Bugfix for viewing files in a bup archive containing more than 1000 separate backups.
    - Cosmetic fixes and more informative texts in the configuration dialog.
    - Add complete translation to Chinese(taiwan) and Lithuanian.

    Kup Version 0.4.2
    - Bug fix: store bup index in backup so that .bup folder in home directory is not needed, it was not being initialized anyway.. that was the real bug.
    - Bug fix: allow user to select sources from /run. Internal hard drives could be mounted there, so it's a valid usage scenario.
    - Bug fix: fix starting the monitoring process when enabling backups for the first time.

    Kup Version 0.4.1
    - Bug fix: detect when a new filesystem is mounted on a monitored path.
    - Now with complete German, Polish, Russian, French, Portugese, Spanish, Tagalog, Swedish and Italian translations. Woohoo! A big "thank you" to all translators!

    Kup Version 0.4.0
    - Bug fix: detect encrypted partitions on external hard drives.
    - Small update to keep up-to-date with new metadata format in bup v0.25
    - Add German, Italian and Swedish translations. Tagalog and Spanish are still only partial.

    Kup Version 0.4.0 beta 1
    - Add kioslave for accessing files and folders directly from any git archive (including bup archives, of course!). Comes complete with support for metadata scheduled to be available with the soon-to-come 0.25 version of bup. Please test! Just type "bup://" in a kde-based filemanager (dolphin, konqueror, krusader et al)
    - Add a new application called filedigger, it helps you find the right version of a file and then also helps you restore that file. You can open folders and files to have a look at them before restoring, thanks to the new kioslave.
    - Add rsync-type of backups.

    Please help test the above new features! And now is also the time to translate all the new texts, please help adding your language!

    Kup Version 0.3.2
    - Add german, italian and tagalog translations.
    - Make it more difficult to create a backup plan without a destination. (Select first usb drive automatically when connected, warn user if no drive is selected when saving)

    Kup Version 0.3.1
    - Fix running with older versions of bup by removing compression level option, not useful for most people anyway.
    - Check if bup is installed, notify user if not.
    - Add spanish translation.

    Kup Version 0.3
    - Adds an option to take the backup as root. Useful when you want to backup system files which needs root access to read.
    - Now checks if you are inactive (no mouse or keyboard activity) when accumulating usage time. For instance, Kup will no longer count time watching a movie on your computer as active usage time.
    - Adds ability to configure which compression level is used for backups.
    - Adds the option of selecting/deselecting hidden folders.
    - Adds infrastructure for translations and a swedish translation. Help with other languages would be appreciated!
    - Now sets the CPU and (on linux) the IO scheduler priority of the backup processes to be very nice, just to minimize risk of a running backup disturbing you.
    - Fixes a couple of bugs in the folder selection tree.
    - Shows more info about external drives connected and now also remembers more info about the drive you have selected.
    - Now uses the bup index file in your home directory instead of having the index file located in the destination archive. This can perhaps give better performance in some scenarios, not tested.
    - Adds a few hidden folders in your home directory as default excludes, should be useful for most people.

    Kup Version 0.2
    - Introduced a new scheduling mode, Usage. Monitors how long you've been logged in since last backup was taken and suggests new backup after configured number of hours. Made this scheduling mode the default.
    - Made a new systray icon (supposed to look like a safe... you judge..).
    - The progress notification thing was just ugly & annoying, removed it. Now just showing an animated icon when taking a backup.
    - Added option to never ask user before starting to take a new backup.
    - Improved error reporting
    - Big code cleanup for more maintainable code
    - Made the config module's way of detecting/starting the daemon process more reliable.
    - Systray icon tooltip now contains info on backup plan status.
    - Systray icon now shows up with a red warning symbol if a plan has "bad" status; more than three times the backup interval has passed since last backup.
    - Bug fix, already plugged in devices didn't show up in the list for selecting external destination drive.
    - Bug fix for local filesystem destination: now detects if destination folder becomes available after a mount.

    Kup Version 0.1
    - Initial release.

    Arch(Arch linux PKGBUILD)
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     backup failed

     by domhans on: Jul 30 2015
    Score 50%

    first thanks for this great tool. saved my life several times.

    since a few days I get the following error:

    bup -d /media/IDO_BACKUP/Backups save -n kup
    bup -d /media/IDO_BACKUP/Backups fsck -g
    fatal: pack is corrupted (SHA1 mismatch)
    pack-fbe490bea4e3b09cfdd723aac661a8559a385f31 git verify: failed (1)
    fatal: pack is corrupted (SHA1 mismatch)
    pack-15f284bcbb01e5df6d21d64bbf11cd3b1089d7a2 git verify: failed (1)

    It looks like it's more related to git, but I could not find any suitable solution. Any Idea?


    Reply to this


     Re: backup failed

     by domhans on: Jul 30 2015
    Score 50%

    forgot, I'm using the 'generate recovery information' option and i already tried to do a

    bup -d /media/IDO_BACKUP/Backups fsck -r

    did not help

    Reply to this


     Re: Re: backup failed

     by sideshow on: Aug 19 2015
    Score 50%

    Just sounds like the files have been corrupted beyond repair then... be happy you found out before you needed the backup! :)

    Reply to this


     (k)ubuntu: kup should depend on kde-runtime

     by ach on: Oct 18 2015
    Score 50%

    1st: thx a lot for this great tool!

    In kubuntu, kdebase-runtime is for years a transitional pkg for kde-runtime. See


    kdebase-runtime is not installed in new installations. So installing kup via dpkg complains about missing dependency kdebase-runtime. But all kdebase-runtime pkg does is depending on kde-runtime, which is always already installed in kubuntu.

    Depending on kde-runtime would make dpkg -i kup.. work out of the box for kubuntu.


    Reply to this


     Re: (k)ubuntu: kup should depend on kde-runtime

     by ach on: Oct 18 2015
    Score 50%

    Same for debian:


    Reply to this


     Re: Re: (k)ubuntu: kup should depend on kde-runtim

     by sideshow on: Oct 20 2015
    Score 50%

    Thanks for the tip! I can see the value in fixing this... but I don't see how to do it. There is no mention of any runtim dependencies in the package files for debian/ubuntu, only lists the build deps. I guess the runtime deps are generated automatically when the package is built.
    If you have any advice for how to correct it that would be good. My motivation for packaging is very low, looking back I can't really believe I managed to get these packages built, considering how time consuming, boring and frustrating it is.

    Reply to this


     W:semantic information (xattrs) lost after restore

     by ach on: Nov 27 2015
    Score 50%

    dolphin, gwenview and maybe other can add semantic info to any file: Tags, Rating and Comments.

    They are stored as extendend attributs xattr. E.g.:

    $ xattr -l file-with-xattr
    user.xdg.tags: foo bar baz,blabla
    user.baloo.rating: 4

    When you 'Restore' a directory with such a file or copy it from Kup backup via 'Open' the xattr are lost. Maybe worth mentioning somewhere in the docs?

    I'm sure it's bup's 'fault', not kup's, but that does not really help ;-)

    P.S. vim, kate, copy with dolpin (kio in general?) do _not_ preverse xattr too :-(

    To preserve xattr you have to use

    rysnc -aX ...
    cp -a ...
    tar --xattrs ...

    Reply to this


     lost+found" failed: Permission denied

     by sbaragnaus on: Jan 25 2016
    Score 50%

    I've tried to backup my pictures drive (ext4 filesystem) to an external hd (ext4 filesystem).

    I can't complete my backup due to a denied permission in the "lost+found" folder.

    How can I exclude that directory? It's grayed out in backup configuration. I'm using kup 0.6 and Kde 5.5.3.

    Here is the log:

    Kup is starting rsync backup job [...]
    rsync -aR --delete --delete-excluded --exclude=/home/sbaragnaus/pictures/Downloads /run/media/sbaragnaus/Verbatim/backup-kup
    rsync: opendir "/home/sbaragnaus/pictures/lost+found" failed: Permission denied (13)
    rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1178) [sender=3.1.2]

    Kup did not successfully complete the rsync backup job.


    Reply to this


     Re: lost+found" failed: Permission denied

     by avlas on: Mar 7 2016
    Score 50%

    I guess this is because lost+found belongs to the root user and Kup currently cannot backup files belonging to third users (root included).

    I would highly appreciate to have the option to enable admin backups from the kcm shell.

    Thanks btw Sideshow for porting Kup to KF5! I am glad I can use Kup again :)

    Reply to this


     Re: Re: lost+found" failed: Permission denied

     by sbaragnaus on: Mar 8 2016
    Score 50%

    It's an official bug:


    Can anyone help to fix it?


    Reply to this


     Corrupt Packfiles

     by peerwal on: May 16 2016
    Score 50%

    What a great backup tool!
    I just installed ver. 0.5.1-1 on a Kubuntu 14.04 system and ran a manual backup of my personal data using an ext4 formatted Fritz!NAS drive as the destination drive. Basically it runs perfectly but each backup has a couple of corrupted packs, so I can't view the archived files using the 'View Files' function. So, what do I do with the corrupted packs as I don't see any way of restoring files without being able to view the files?
    Thanks for your support.

    Reply to this


     Re: Corrupt Packfiles

     by peerwal on: May 22 2016
    Score 50%

    Although not having found the reason for the integrity check failing on some of the pack files I solved the issue by running a completely new backup.

    Reply to this

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