Re: [PATCH 00/10] Misc block layer patches for bcachefs

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On Sun, May 20, 2018 at 10:35:29PM +0000, Bart Van Assche wrote:
> On Sun, 2018-05-20 at 18:31 -0400, Kent Overstreet wrote:
> > On Sun, May 20, 2018 at 10:19:13PM +0000, Bart Van Assche wrote:
> > > On Sun, 2018-05-20 at 18:17 -0400, Kent Overstreet wrote:
> > > > On Fri, May 18, 2018 at 03:12:27PM +0000, Bart Van Assche wrote:
> > > > > On Fri, 2018-05-18 at 05:06 -0400, Kent Overstreet wrote:
> > > > > > On Thu, May 17, 2018 at 08:54:57PM +0000, Bart Van Assche wrote:
> > > > > > > With Jens' latest for-next branch I hit the kernel warning shown below. Can
> > > > > > > you have a look?
> > > > > > 
> > > > > > Any hints on how to reproduce it?
> > > > > 
> > > > > Sure. This is how I triggered it:
> > > > > * Clone https://github.com/bvanassche/srp-test.
> > > > > * Follow the instructions in README.md.
> > > > > * Run srp-test/run_tests -c -r 10
> > > > 
> > > > Can you bisect it? I don't have infiniband hardware handy...
> > > 
> > > Hello Kent,
> > > 
> > > Have you noticed that the test I described uses the rdma_rxe driver and hence that
> > > no InfiniBand hardware is needed to run that test?
> > 
> > No, I'm not terribly familiar with infiniband stuff....
> > 
> > Do you have some sort of self contained test/qemu recipe? I would really rather
> > not have to figure out how to configure multipath, and infiniband, and I'm not
> > even sure what else is needed based on that readme...
> 
> Hello Kent,
> 
> Please have another look at the srp-test README. The instructions in that document
> are easy to follow. No multipath nor any InfiniBand knowledge is required. The test
> even can be run in a virtual machine in case you would be worried about potential
> impact of the test on the rest of the system.

Your readme refers to kernel config options that don't even exist in the current
kernel



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