On Wed, Feb 10, 2016 at 1:39 PM, Михаил Гаврилов <mikhail.v.gavrilov@xxxxxxxxx> wrote: > > Here full log: http://btrfs.sy24.ru/kernel-sysrqw-btrfscleaner770blocked-2.txt > > I am so sorry if this log is useless. Looks good to me. The blocked task happens out of no where with nothing reported for almost an hour before the blocking. And I see the sysrq: SysRq : Show Blocked State was issued and lots of information is in the file. > If "sysrq" is needed enabled before hang then I need set this > permanently because as I said I not having exactly reproducing this. echo 1 > /proc/sys/kernel/sysrq can happen anytime, it just enables sysrq triggering functions which on Fedora kernels is not enabled by default. The main thing is that the echo w to the sysrq trigger needs to happen at the time of the problem to show the state. You did that. Let's see what Liu Bo has to say about it. -- Chris Murphy -- 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
