On 07/03/14 23:34, Bart Van Assche wrote: > On 07/03/14 16:05, Mike Snitzer wrote: > 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. Hi Bart, could you collect output of 'dmsetup table' on the test machine? My particular interest is whether pg_init is involved or not since Hannes's patch made major surgery on pg_init processing. Also, output of the followings while the problem is happening might help: dmsetup status dmsetup info -c cat /proc/diskstat multipathd -k"show paths" multipathd -k"show maps status" multipathd -k"show maps stats" -- Jun'ichi Nomura, NEC Corporation -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
