Attaching a flashdrive with several partitions is very, very slow

[jmynes]

Qubes OS release

Qubes OS 4.3

Brief summary

I connected a flashdrive which I haven't used in a while, and am unsure of the contents of

It has quite a few partitions:

This took about 5-10 minutes to enumerate, never resulted in a USB device at the bottom, and locked up the entire USB menu while working

Steps to reproduce

1. Produce a flash drive with many, many partitions
2. Attempt to plug it in to QubesOS

Expected behavior

Partitions should not take so long to enumerate, the USB device should appear, and this should not lock up the usb/device widget while waiting

Actual behavior

See initial description

Additional information

(Tested only on QubesOS 4.3.0 rc3 with this flash drive)

[jmynes]

Hmm, seemingly, from a different USB port on this laptop, I get to the exact same state, but in about 30 seconds instead of several minutes

[Atrate]

In general I have observed that if you have a lot of USB devices plugged in (e.g. via hubs), qubesd takes a really long time to process stuff. Looks like qubes-core-admin-client#394 will be able to fix that after initial device discovery.