[bug report] nvme removing after probe failed with pci rescan after nvme sysfs removal

[Adam Manzanares]

On Fri, Sep 24, 2021 at 10:33:14AM +0800, Yi Zhang wrote:
> On Fri, Sep 24, 2021 at 12:58 AM Adam Manzanares
> <a.manzanares at samsung.com> wrote:
> >
> > On Wed, Sep 22, 2021 at 09:56:47AM +0800, Yi Zhang wrote:
> > > Hello
> > >
> > > I found this issue during the nvme removal test, I did some debug code
> > > found it was failed during nvme "CSTS – Controller Status" read, could
> > > anyone help check if this is one HW or SW issue?
> >
> > Hello Yi,
> >
> > What is the nvme removal test? When I get access to the test I will run it on
> > the HW on my current machine to see what happens. I don't have the same SSD in
> > my current test system, but I will make sure I am able to run the test on the
> > same HW you are having issues with.
> >
> Hi Adam
> Here is the steps, and the server I used is DELL R730xd and DELL R640,
> feel free to let me know if you need more info, thanks.
> 
> # lspci | grep -i nvme
> 87:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd
> NVMe SSD Controller SM981/PM981/PM983
> #echo 1 >/sys/bus/pci/devices/0000\:87\:00.0/remove
> #echo 1 >/sys/bus/pci/rescan

This is enough info for now. I can't reproduce the problem on the platform 
I am currently using. I will try to track down the same hw and fw that you 
are using, retest, and send an update.


> 
> Thanks
> Yi
>