Fedora 34. Deja Dup backup error, doesn’t have permission to write to external partition

I’m trying to run my first DejaDup backup to an ext4 partition on an external hard drive. I created the partition using gparted. When I try to run the backup I get an error. See pic for error. Imgur: The magic of the Internet How to fix this? I’m a newbie so please provide the simplest fix that works.

The souce drive is LUKS encrypted. (my main system drive)

Details of the external backup destination partition:

  1. Partition UUID 942a83dc-97f3-42ec-95db-249b1fc15720
  2. Identifier /dev/sda2
  3. Mounted on /run/media/m3110w/Ishvara extended

I tried these commands and they didn’t work. (No such file or directory)

  1. sudo chgrp adm /run/media/m3110w/Ishvara extended/942a83dc-97f3-42ec-95db-249b1fc15720
  2. sudo chgrp adm /run/media/m3110w/942a83dc-97f3-42ec-95db-249b1fc15720
    .
    .

That mount point doesn’t look correct. Where do other USB drives get auto-mounted to?

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Here’s a pic of the partition details. Does this help? What does the key symbol mean next to dev/sda2?

“Where do other USB drives get auto-mounted to?” I don’t know. How to find out?
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I tried these commands and they didn’t work. (No such file or directory)

  1. sudo chgrp adm /run/media/m3110w/Ishvara extended/942a83dc-97f3-42ec-95db-249b1fc15720
  2. sudo chgrp adm /run/media/m3110w/942a83dc-97f3-42ec-95db-249b1fc15720

A backslash has to be added before spaces as such:

sudo chgrp adm /run/media/m3110w/Ishvara\ extended/942a83dc-97f3-42ec-95db-249b1fc15720

What does the key symbol mean next to dev/sda2?

It means the partition is mounted.
It’s mounted on the correct directory (/run/media).
But do noted that it’s temporary mounted and will be unmounted after you reboot. You have to edit /etc/fstab to auto-mount it.

For your case it’s adding this line:

UUID=942a83dc-97f3-42ec-95db-249b1fc15720 /media/lshvaraExtended ext4 defaults,noatime 1 2
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Plug in some other USB stick and when it gets auto mounted check where that mounted path is.

On my system, I have an internal drive for Timeshift snapshots, it doesn’t automatically mount but when Timeshift makes a snapshot it mounts it to /run/timeshift/... this is the only drive that ever gets mounted to /run and I need elevated privileges to open it with a file manager.

Deja Dup doesn’t run with elevated privileges, Timeshift does.

All other drives, internal or external and including the drive I use for Deja Dup backups, get mounted to /media/username

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As I mentioned in my other reply, I’m giving up on Fedora (what a nightmare!). Will try Ubuntu so this thread is resolved. Thanks for all your many replies! Appreciated.