Re: [PATCH V6 11/11] nvme: pci: support nested EH

On Fri, May 18, 2018 at 10:28:04AM -0600, Keith Busch wrote:

On Thu, May 17, 2018 at 04:23:45PM +0200, Johannes Thumshirn wrote:

quoted

quoted

Agreed. Alternatively possibly call the driver's reset_preparei/done
callbacks.

Exactly, but as long as we can issue the reset via sysfs the test-case
is still valid.

I disagree the test case is valid. The test writes '0' to the
pci-sysfs 'enable', but the driver also disables the pci device as part
of resetting, which is a perfectly reasonable thing for a driver to do.

If the timing of the test's loop happens to write '0' right after the
driver disabled the device that it owns, a 'write error' on that sysfs
write occurs, and blktests then incorrectly claims the test failed.

Hmm, ok that's a valid point. But seeing you have sent a patch for
blktests anyways I think it's gone now.

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Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
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