On 07/03/14 16:05, Mike Snitzer wrote: > How easy would it be to replicate your testbed? Is it uniquely FIO hw > dependent? How are you simulating the cable pull tests? > > I'd love to setup a testbed that would enable me to chase this more > interactively rather than punting to you for testing. Hello Mike, The only nonstandard hardware that is required to run my test is a pair of InfiniBand HCA's and an IB cable to connect these back-to-back. The test I ran is as follows: * Let an SRP initiator log in to an SRP target system. * Start multipathd and srpd. * Start a fio data integrity test on the initiator system on top of /dev/dm-0. * From the target system simulate a cable pull by disabling IB traffic via the ibportstate command. * After a random delay, unload and reload SCST and the IB stack. This makes the IB ports operational again. * After a random delay, repeat the previous two steps. If you want I can send you the scripts I use to run this test and also the instructions that are necessary to build and install the SCST SRP target driver. Bart. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
