In reply to comment #2, we're using ksplice to patch the kernel, but we haven't upgraded the ubuntu package, lately.
I'm afraid but this is a production node and I can't use it for testing. In case it helps, this node hadn't had this issue before (62 days running) and after yesterday's reboot, it has been behaving as expected (~0% ioutil on bcache0). ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662573 Title: bcache ioutil to 100% needs node reboot (no kern logs related) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1662573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs