I have been looking at other threads. Some have said the problem is a permission issue, and some have said it hasn't been solved. I am using rsync to backup to a USB drive. When I insert the usb drive, I can find it in /media/pi/USBNAME. Here is the command I'm using.

sudo rsync -avH --delete-during --delete-excluded --exclude-from=/home/pi/Documents/backup/rsync-exclude.txt / /media/pi/*/

It works fine for a while, but then it will randomly stop copying the files to the USB drive. If I re-run the command, it will stop at a different file.

Any help?

1 Answer 1


Who knows what /media/pi/*/ will actually do.

You should NOT use wildcards with rsync and generally you would NOT use a trailing / on the target. (This depends on exactly what you are trying to achieve rsync is rather particular about directory paths.)

See https://raspberrypi.stackexchange.com/a/28087/8697 for a script I use.

NOTE I ALWAYS check that the target drive is mounted in RW mode. Otherwise rsync will still try to copy somewhere, and may copy to your SD Card (until full).

I mount my backup drive with sudo mount /mnt/PiData NOTE /mnt/PiData must already exist

This requires an entry in /etc/fstab such as the following:-

UUID=94dc6686-0eda-41ba-87f7-494d7e37f913       /mnt/PiData     ext4    defaults,noatime,noauto  0     0

You can use the following to find the UUID of your partition:-

sudo blkid /dev/sda

  • Would you mind helping me configure this script to mine settings. Not very familiar with bash. So when I plug in the USB (it's called Test) it is located in /media/pi/Test/. How can check if this is RW along as check that this path is there.
    – Test4444
    Commented Dec 17, 2018 at 2:45
  • @Test4444 if you post a script you will get help - you need to add more information. The first thing I would do is NOT use /media and automatic mounting. Start by adapting my script. Preferably exit the GUI and run on command line.
    – Milliways
    Commented Dec 17, 2018 at 3:28
  • @Test4444 I am not at a computer - how is disk formatted?
    – Milliways
    Commented Dec 17, 2018 at 3:35
  • I formated with sudo mkfs.vfat /dev/sda. How do I not use /media for automatic mounting. I am not using any GUI, I can only connect to the pi through ssh.
    – Test4444
    Commented Dec 17, 2018 at 4:19
  • @Test4444 As per my linked Answer "I backup to an ext4 partition on a HDD mounted on the Pi" You cannot backup to a FAT partition. DO NOT post detail into comments - EDIT your question. If you are not using GUI (which automounts removable media) - how do you mount?
    – Milliways
    Commented Dec 17, 2018 at 4:40

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