On Thu, 2017-01-26 at 16:50 -0700, Jens Axboe wrote: > Clearly we are missing some requests. How do I setup dm similarly to > you? > > Does it reproduce without Christoph's patchset? Hello Jens, I see similar behavior with the blk-mq-sched branch of git://git.kernel.dk/linux-block.git (git commit ID 0efe27068ecf): booting happens much slower than usual and I/O hangs if I run the srp-test software. Regarding creating a similar dm setup: I hope that in the future it will become possible to run the srp-test software without any special hardware and with in-tree drivers. Today running the srp-test software with in-tree drivers namely requires IB hardware. This is how to run the srp-test software today with in-tree drivers: * Find a system with at least two InfiniBand ports. * Make sure that the appropriate IB driver in the kernel is enabled and also that LIO (CONFIG_TARGET_CORE=m and CONFIG_TCM_FILEIO=m), ib_srp, ib_srpt and dm-mpath are built as kernel modules. * If none of the IB ports are connected to an IB switch, connect the two ports to each other and configure and start the opensm software such that the port states change from "Initializing" to "Active". * Check with "ibstat | grep State: Active" that at least one port is in the active state. * Configure multipathd as explained in https://github.com/bvanassche/srp-test/blob/master/README.md. * Restart multipathd to make sure it picks up /etc/multipath.conf. * Clone https://github.com/bvanassche/srp-test and start it as follows: srp-test/run_tests -t 02-mq Bart. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
