Seeing the same problem here on a desktop machine when doing dd of 40GB image. Couldn't log in via ssh until dd was finished. This was repeated in dmesg every 120 seconds: [ 2520.696276] INFO: task ionice:2393 blocked for more than 120 seconds.
Colin: your suggestion echo 10 | sudo tee /proc/sys/vm/dirty_ratio Seems to have fixed the problem for me. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs