On Thu, 2017-01-26 at 17:41 -0700, Jens Axboe wrote: > On 01/26/2017 05:38 PM, Bart Van Assche wrote: > > 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. > > Please don't run that, run for-4.11/block and merge it to master. > Same behavior? I have not yet had the chance to run the srp-test software against that kernel. But I already see that booting takes more than ten times longer than usual. Note: as far as I know the dm-mpath driver is not involved in the boot process of my test system. > > 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 > > I can't run that. Any chance of a test case that doesn't require IB? It is possible to run that test on top of the SoftRoCE driver. I will first check myself whether the latest version of the SoftRoCE driver is stable enough to run srp-test on top of it (see also https://github.com/dledford/linux/commits/k.o/for-4.11). Bart.-- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
