On Sun, Jul 28, 2013 at 06:57:42PM -0500, sheng qiu wrote: > generally the flash size is 40GB, RAM is 8GB. The workload first > writes about 65GB of data and then do read/writes (10 threads) on > those data. > it runs less than 1 hour during the read/write step and nearly > happened each time. now i was testing with less threads and see if > this is the case. Some kind of garbage collection bug... :/ Could you try the bcache-testing branch? It's got significantly improved garbage collection code - if it's not fixed there, at least that code should be easier to debug... -- 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