Conversation
AugierLe42e@diaspodon.fr

Augier (fr & en) 🇵🇸🇺🇦☭🏴

Hey folks out there! I need help with something really, really low-level.

Here my problem: most of Qnap's NAS feature a "copy" button on the front, next to a USB-A port. That button will copy the content of any hard-drive plugged to the USB port next to it.

I want to develop that feature for Linux. But I'm having troubles finding a way to reliably associate that port and the storage that's plugged on it and I wonder how the Qnap OS does that.

Any idea?

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AugierLe42e@diaspodon.fr

Augier (fr & en) 🇵🇸🇺🇦☭🏴

Reply to @AugierLe42e@diaspodon.fr

gregkh@social.kernel.org Hi! I'm really sorry to mention you out of the wild like that. I saw that you were active here. I just out of option about the problem in the previous post. I need to find someone how knows the kernel enough to help me. Do you know a piece of documentation that would help me understand how to associate a particular USB port with the storage that's plugged on it?

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narju@piaille.fr

Ju de l'eau

Reply to @AugierLe42e@diaspodon.fr

@AugierLe42e Pardon my ignorance but are there other USB ports or rather other disks that may be plugged to a USB port on the QNAP ?

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llutz@norden.social

Lutz G.

Reply to @AugierLe42e@diaspodon.fr

@AugierLe42e
Analyse dmesg/lsblk/lsusb to identify the last connected device?

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AugierLe42e@diaspodon.fr

Augier (fr & en) 🇵🇸🇺🇦☭🏴

Reply to @llutz@norden.social

@llutz Not reliable. The port under /sys/device changes based on whether the peripheral is USB2 or 3 so what else could it make that vary?

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gregkh

Greg K-H

Reply to
@AugierLe42e Look at how the "port" is found when you do something like 'lsusb -t', I think that should help out here. Good luck!
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gregkh

Greg K-H

Reply to
@AugierLe42e Hopefully yes, but it depends on the firmware on the hub itself, it's not under control of the operating system at all.
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