On Fri, Dec 1, 2017 at 8:50 AM, Ming Lei <ming.lei@xxxxxxxxxx> wrote: > Could you run the following script[1] and provide us the result after > the IO hang is triggered? > > #./dump-blk-info /dev/sdX #/dev/sdX is name of your USB disk > > [1] http://people.redhat.com/minlei/tests/tools/dump-blk-info Hi Ming, Thanks for taking a look. I have pasted and attached (in case of gmail corruption) these files: Samsung-128GB-before: Samsung 128GB USB 3.0 Fit plugged into HP 8460p, before gdisk write Samsung-128GB-after: Samsung 128GB USB 3.0 Fit plugged into HP 8460p, after gdisk write Generic-4GB-after: some awful generic but working 4GB USB flash drive plugged into HP 8460p, after gdisk write I have reproduced this again on the same kernel revision and blk-mq bfq with: minimized cmdline: scsi_mod.use_blk_mq=y gdisk writing the partition table as-is, no changes and confirmed again that kyber never triggers this. Thanks, Ivan Samsung-128GB-before =============sdc/hctx0================== $active 0 $busy $/sys/kernel/debug/block/sdc//hctx0/cpu0 $completed 3 14 $dispatched 3 14 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu1 $completed 159 76 $dispatched 159 76 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu2 $completed 84 57 $dispatched 84 57 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu3 $completed 154 54 $dispatched 155 54 $merged 1 $rq_list $ctx_map 00000000: 00 $dispatch $dispatched 0 8 1 701 2 0 4 0 8 0 16 0 32+ 0 $flags alloc_policy=FIFO SHOULD_MERGE|SG_MERGE $io_poll considered=0 invoked=0 success=0 $queued 602 $run 843 $sched_tags nr_tags=2 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=2 busy=1 bits_per_word=64 map_nr=1 alloc_hint={0, 1, 0, 0, 0, 1, 1, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $sched_tags_bitmap 00000000: 01 $state $tags nr_tags=1 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=1 busy=0 bits_per_word=64 map_nr=1 alloc_hint={0, 0, 0, 0, 0, 0, 0, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $tags_bitmap 00000000: 00 Samsung-128GB-after =============sdc/hctx0================== $active 0 $busy $/sys/kernel/debug/block/sdc//hctx0/cpu0 $completed 3 14 $dispatched 3 14 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu1 $completed 159 95 $dispatched 159 96 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu2 $completed 84 58 $dispatched 84 58 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu3 $completed 154 54 $dispatched 155 54 $merged 1 $rq_list $ctx_map 00000000: 00 $dispatch $dispatched 0 8 1 721 2 0 4 0 8 0 16 0 32+ 0 $flags alloc_policy=FIFO SHOULD_MERGE|SG_MERGE $io_poll considered=0 invoked=0 success=0 $queued 623 $run 887 $sched_tags nr_tags=2 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=2 busy=2 bits_per_word=64 map_nr=1 alloc_hint={0, 0, 0, 0, 0, 1, 1, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $sched_tags_bitmap 00000000: 03 $state $tags nr_tags=1 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=1 busy=0 bits_per_word=64 map_nr=1 alloc_hint={0, 0, 0, 0, 0, 0, 0, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $tags_bitmap 00000000: 00 Generic-4GB-after =============sdc/hctx0================== $active 0 $busy $/sys/kernel/debug/block/sdc//hctx0/cpu0 $completed 94 32 $dispatched 94 33 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu1 $completed 561 113 $dispatched 562 113 $merged 0 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu2 $completed 251 179 $dispatched 251 179 $merged 4 $rq_list $/sys/kernel/debug/block/sdc//hctx0/cpu3 $completed 228 63 $dispatched 228 63 $merged 0 $rq_list $ctx_map 00000000: 00 $dispatch $dispatched 0 21 1 1707 2 0 4 0 8 0 16 0 32+ 0 $flags alloc_policy=FIFO SHOULD_MERGE|SG_MERGE $io_poll considered=0 invoked=0 success=0 $queued 1523 $run 2000 $sched_tags nr_tags=2 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=2 busy=2 bits_per_word=64 map_nr=1 alloc_hint={0, 0, 0, 0, 1, 1, 0, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=active}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $sched_tags_bitmap 00000000: 03 $state $tags nr_tags=1 nr_reserved_tags=0 active_queues=0 bitmap_tags: depth=1 busy=0 bits_per_word=64 map_nr=1 alloc_hint={0, 0, 0, 0, 0, 0, 0, 0} wake_batch=1 wake_index=0 ws={ {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, {.wait_cnt=1, .wait=inactive}, } round_robin=0 $tags_bitmap 00000000: 00
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