On 2020-09-05 11:00, Graham Perrin wrote:
On 04/09/2020 09:01, Hans Petter Selasky wrote:
On 2020-09-04 01:42, Graham Perrin wrote:
This week for the first time I toyed with OpenZFS on a USB device: a mobile hard disk drive connected to the dock of an HP EliteBook 8570p.

A light test, with the pool imported but not writing to the dataset at suspend time.

At resume time (22:31), the device was still physically connected but the pool suffered an I/O failure (and the keyboard and trackball on USB were unusable).
We need output from "procstat -akk" to see where ZFS/USB is hanging.

--HPS

For test purposes I reproduced the behaviour with a different device, a USB flash drive (connected to the same dock).

Attached:

2020-09-05 09:27:55 procstat -akk.txt

– output from procstat -akk

2020-09-05 09:17:59 suspend 09:26:49 resume.txt

– the output in context.

Thank you

Graham



Hi,

USB is not hanging.

It looks like a problem with USB resume, that no devices are recognized, until you re-plug them ...

--HPS
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