On Thu, 26 Oct 2017 09:40:19 -0600 Cheyenne Wills <cheyenne.wills@xxxxxxxxx> wrote: > Briefly when I upgraded a system from 4.0.5 kernel to 4.9.5 (and > later) I'm seeing a blocked task timeout with heavy IO against a > multi-lun btrfs filesystem. I've tried a 4.12.12 kernel and am still > getting the hang. There is now 4.9.58 (fifty three versions later!) and 4.12 series is long abandoned and gone from the charts altogether. So just in case, did you check with the latest kernels? Also, keep in mind the 120 second warnings are just that, and not an error condition by themselves. You can disable them or increase the maximum timeout in sysctl settings. And it is not clear from your reports if you only get warnings and after the load subsides everything is back to normal, or the FS locks out "for good", i.e. with all access attempts hanging indefinitely and no way to unmount the FS or otherwise recover. -- With respect, Roman -- 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
