Bug 211667 - USB attached HDD enclosure failure
Summary: USB attached HDD enclosure failure
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: USB (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: Default virtual assignee for Drivers/USB
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-02-10 09:19 UTC by daniel schroeder
Modified: 2021-02-10 15:51 UTC (History)
0 users

See Also:
Kernel Version: 5.10.14
Subsystem:
Regression: No
Bisected commit-id:

Attachments
dmesg (16.25 KB, text/plain)
2021-02-10 09:19 UTC, daniel schroeder 		Details
Add an attachment (proposed patch, testcase, etc.)

Description daniel schroeder 2021-02-10 09:19:15 UTC 
Created attachment 295177 [details]
dmesg

Only three out of four drives are recognized at the time the enclosure is powered on.
As a workaround the following device is resetted:

path=/dev/bus/usb/004/008
    description=VIA Labs, Inc. USB3.1 Hub
    manufacturer=VIA Labs, Inc.
    device=USB3.1 Hub
    search string=VIA Labs, Inc. USB3.1 Hub VIA Labs, Inc. USB3.1 Hub

which is a HUB integrated into the external enclosure.

External enclosure model: IB-3740-C31

Attached dmesg shows the initial power up and the following manual reset.
Comment 1 Alan Stern 2021-02-10 15:51:17 UTC 
For more information, collect a usbmon trace for bus 4 showing what happens when the enclosure is plugged in and powered up.  This could be a bug in the integrated hub.
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