Hi, The bug appeared again. And apparently it's a kernel one. My bad that I didn't notice that the CPU activity wals in kernel space. The mount process hangs inside mount call itself. I've an strace output, but it's not informative, it perfectly normal besides the hang in mount call. I've a very few experience in catching kernel bugs like that, but I'll do my best to help. According to my observations, the bug takes place only after emergency power down after a rather long uptime, may be even the time it takes to mount the partition is proportional to ether uptime or the amount of io since last mount. I left FS unclean, so it is possible to do some tests, but I would like to see it up and running as soon as possible. Best regards, Aleksandrov Sergey Vasil'evich -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html