USB: disk controller disconnection

From: Graham Perrin <grahamperrin_at_gmail.com>
Date: Sat, 17 Jul 2021 14:53:56 UTC 
On 17/07/2021 14:36, doa379 wrote:


Re: nvme(4) losing control, and subsequent use of fsck_ffs(8) with UFS

> I have a similar issue with a system that runs off a USB drive. The
> fs is UFS. The system does minimal disk io but the system fails without
> warning on repeated intervals. The disk controller gets disconnected
> thereby taking the whole system offline. I'm sure the drive itself is
> not perfect but I'd have expected the fs to account for that.


USB can be a strange, horrible creature. Always carry an old-fashioned 
hand-held mirror; if you look at USB the wrong way, you might turn to 
stone.

I learnt to not trust some USB ports for storage.

What's the hardware in your case, and how exactly is it connected? Share 
a hardware probe, if you like.