Re: USB HDD issue with buster-backports kernel

2020-06-08 Thread Christopher David Howie
On 6/8/2020 10:56 AM, Christopher David Howie wrote:
> * On the 5.5 kernel, I was getting throughput between 10MB/sec and 
> 20MB/sec.  At apparently random points, dd would stop reporting any 
> progress and a "usb-storage" process in top would be consuming 100%
> CPU. Any commands against the HDD (even smartctl) would hang until
> the device was physically replugged.
Also, I should mention: I only got this behavior when using the crypt
container.  If I ran dd with /dev/urandom against the raw partition, the
throughput was much closer to 30MB/sec and the device never stopped
responding.

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Re: USB HDD issue with buster-backports kernel

2020-06-08 Thread Christopher David Howie
On 6/8/2020 11:38 AM, Andrei POPESCU wrote:
> What about dmesg?

Sorry, yes... I forgot to mention.  dmesg was absolutely silent when the
drive stopped responding.  After unplugging it, I of course got a flood
of errors from dm-crypt about being unable to write to the disk.

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Re: USB HDD issue with buster-backports kernel

2020-06-08 Thread Andrei POPESCU
On Lu, 08 iun 20, 10:56:41, Christopher David Howie wrote:
> 
> * On the 5.5 kernel, I was getting throughput between 10MB/sec and 20MB/sec.
> At apparently random points, dd would stop reporting any progress and a
> "usb-storage" process in top would be consuming 100% CPU.  Any commands
> against the HDD (even smartctl) would hang until the device was physically
> replugged.

What about dmesg?

Kind regards,
Andrei
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