path: root/block/blk-mq.c
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authorJens Axboe <axboe@kernel.dk>2018-01-10 09:06:23 -0700
committerJens Axboe <axboe@kernel.dk>2018-01-10 09:06:23 -0700
commit93b570464cce0079c15832cbb8ea17debd541585 (patch)
treed839ccb483b9697dcd12c4e89ae3f67f1d7351ad /block/blk-mq.c
parent8993d445df388e3541f48920a2353cfc904b220a (diff)
null_blk: add option for managing IO timeouts
Use the fault injection framework to provide a way for null_blk to configure timeouts. This only works for queue_mode 1 and 2, since the bio mode doesn't have code for tracking timeouts. Let's say you want to have a 10% chance of timing out every 100,000 requests, and for 5 total timeouts, you could do: modprobe null_blk timeout="100000,10,0,5" This is useful for adding blktests to test that IO timeouts are handled appropriately. Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
0 files changed, 0 insertions, 0 deletions

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