https://bugs.kde.org/show_bug.cgi?id=451302
--- Comment #3 from guimarcalsi...@gmail.com ---
(In reply to Simon Persson from comment #2)
> Thanks for the bug report!
>
> I am unable to reproduce the problem. Looking at the code around the place
> of the crash I am also unable to imagine what could be going wrong there, my
> imagination is not good enough... :)
>
> To work towards a solution to this problem we will need to dig around a bit
> more in your saved backups, see what triggers this problem.
> I am thinking that this could be related to the stored content of a file,
> perhaps it has gotten corrupted somehow. This could be any file in your home
> folder, since when you select the top level directory Kup will be scanning
> absolutely every single file that was saved in there. So when you say that
> individual folders work fine, perhaps you were just lucky to try with
> folders that had no problem.
>
> If you want to help by looking for a file in your backups that triggers this
> problem, the easiest way is to just open dolphin and type in the address bar
> "bup:/path/to/backups". Then just navigate around there, into every saved
> directory. See if the bup kioslave crashes in the same way.
>
> I hope you managed to get your files restored! While you have this problem,
> the alternative way to restore files would be to just use "bup restore"
> directly.
Hi. Thanks. I did manage to restore my files by manually copying the files to
my home folder.
Now, even after deleting some old backups and trying to restore new ones again
I still see the crash. I also tried accessing all the folders using your
instructions and couldn't make it crash.
I thought maybe the problem was that I had made the backup to an NTFS
partition, but I did some tests by making a new backup of my Home EXT4
partition to a subfolder in it and the same happens.
I might have found a clue but I'm not sure. This might be a different problem
related to trying to restore my /home backup to my actual /home (which a normal
user has no permission to overwrite).
I made a new backup and if I try to restore it to my home folder Kioslave still
crashes, but if I wait a bit it stops crashing and then it shows I have a
folder with a duplicate name. If I set it to merge (or set a new name, it
doesn't matter) it shows me the following error:
Traceback (most recent call last):
File "/usr/lib/bup/cmd/bup-restore", line 319, in <module>
wrap_main(main)
File "/usr/lib/bup/cmd/../bup/compat.py", line 215, in wrap_main
sys.exit(main())
File "/usr/lib/bup/cmd/bup-restore", line 256, in main
mkdirp(opt.outdir)
File "/usr/lib/bup/cmd/../bup/helpers.py", line 194, in mkdirp
os.makedirs(d)
File "/usr/lib/python3.8/os.py", line 223, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied:
b'/home/_kup_temporary_restore_folder_'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in
apport_excepthook
with os.fdopen(os.open(pr_filename,
FileNotFoundError: [Errno 2] No such file or directory:
'/var/crash/_usr_lib_bup_cmd_bup-restore.1000.crash'
Original exception was:
Traceback (most recent call last):
File "/usr/lib/bup/cmd/bup-restore", line 319, in <module>
wrap_main(main)
File "/usr/lib/bup/cmd/../bup/compat.py", line 215, in wrap_main
sys.exit(main())
File "/usr/lib/bup/cmd/bup-restore", line 256, in main
mkdirp(opt.outdir)
File "/usr/lib/bup/cmd/../bup/helpers.py", line 194, in mkdirp
os.makedirs(d)
File "/usr/lib/python3.8/os.py", line 223, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied:
b'/home/_kup_temporary_restore_folder_'
---------------
If I run kup-filedigger from the terminal, while kioslave is crashing
constantly the terminal outputs this several times a second:
kf.kio.core: UDSEntry for '.' not found, creating a default one. Please fix the
"kio_bup" KIO slave
--------------
But, most importantly, I can still restore the backup if I tell it to restore
to another folder that isn't /home/MyUser. I mean, Kioslaves still keeps
crashing (only when in the checking file sizes step, as always), but if I
select a folder inside my user dir, like /home/MyUser/backup and I just let it
crash, eventually Kioslave stops crashing and the files do start to get
restored.
So apparently the crashes are not preventing Kup from restoring the backups
when I tell it to restore to a subfolder in /home/MyUser.
I also tried running kup-filedigger as root and it works as I described above
when selecting a subfolder in my home user, with the same crashes. I didn't try
overwriting my files by restoring straight to /home because it would make all
my files root-owned, but I suspect the problems with permissions I pasted above
wouldn't happen when doing that.
-----------------------
If this can't be solved, maybe Kup should just forbid selecting /home or
/home/user as folders to be restored, and instead, the interface could be
changed to have checkboxes to the left of all folders. That way, the user could
select all individual folders (preferably with a "Select all" button) within
/home/user and it wouldn't trigger the bug since those would be copied
individually instead of including the parents /home/user.
If there's anything else I can do to help diagnose the issue just tell me.
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