I am able to consistently cause it to hang with the second trace (the rcu_check_callbacks one) with the following fio jobfile. [global] numjobs=16 iodepth=64 [/dev/dsan/bcache] bs=4k ba=4k rw=randwrite size=1g direct=1 ioengine=libaio Another interesting note is that while in this state cat'ing stats files like root_usage_percent cause the entire system to hang completely. I imagine this is due to some sort of sync. Joseph. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
