Qubes 4.3 - usb GUI shows attached - usb is not attached in dom0

[curious_cat_8P]

@rustybird

Maybe try forwarding the device to the other AppVM as a block device (which is generally preferable to forwarding as a USB device), or mounting it directly in sys-usb.

i did
in fact, i used to utilise - on qubes 4.2 - this guide:

[Guide] Incremental backup using the official backup system

Hi, I got really bored about backups, so I took a different approach. I like the official backup system because it works, it’s easy to use and can restore everything, however it sucks because it takes too much disk space. Instead of fighting it, I made a simple script to replace scrypt binary in dom0 that just neuters the encryption, this allows us to pipe the backup file to a tool handling deduplication and encryption. Here is the result of a qube backup done 3 times, with a qube restart bet…

but the appvm was having issues - whereby it would loose connectivity with usb half way the backups

As a matter of urgency - to have a reliable backup

Thanks for reminding me about using qvm-block (or the Block Storage section of the Devices widget)

I am doing a backup via a appvm, and it is painfully slow.
The usb device is assigned with this appvm

under Qubes Global Config > Device Assignments
it is not possible to redirect a block, only the entire device

Thanks for the info @rustybird