On 11/08/2020 21:31, Alan Stern wrote:
On Tue, Aug 11, 2020 at 08:34:53PM +0200, Patrik Nilsson wrote:
Hi Greg,
Can you provide kernel logs? Odds are the disk disconnects itself as it
takes too much power or something.
udev-kernel logs can be found:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886172
The bug report doesn't seem to contain any dmesg kernel logs showing
what happens when the problem occurs.
I'm compiling the latest kernel to supply the kernel logs when done
testing. It takes a while.
Also, the bug report indicates that you started to do a bisection
looking for the kernel version where the problem first appears, but
there's no mention of the final result.
There were no result. For an unknown reason I haven't the bug behavior
in the 4.15 series of the kernel (Ubuntu Mate Bionic), but when I tried
later I had. Maybe it was when I ran Ubuntu Mate Focal with 4.15 series
of kernel that triggered the bug.
It was a failed attempt to iterate to the kernel version that worked.
It is the same hardware.
The bug report also indicates that one of your tests involves copying
/dev/zero to a mounted disk device! That is highly likely to crash the
kernel regardless of what the hardware does. What happens if you
unmount the disk before running the test?
The ssd disk contains no partition data. It is not mounted.
Alan Stern
Patrik
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