I switched to the LT kernel because of this issue. I was running mainline and thought that LT would get me stability. I can switch back to LT while we RCA. At the risk of changing two things, I could add that (scsi_mod.use_blk_mq=n) to my boot and also switch back to ML. I do notice that disk IO is high at the time of the hang -- I've assumed it is btrfs balance, but if I read the logs right, it may have finished before the hang. Adding more logging. I've also put the kernel logs into a pastebin: https://pastebin.com/80qRXA9c ...wish I could get the watchdog to force a dump/trace. Will look at that, too. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
