This is what JBD2 is: https://en.wikipedia.org/wiki/Journaling_block_device
Perhaps these will help diagnose the issue? - https://www.flagword.net/2017/01/jbd2-is-munching-your-disks-use-ftrace-to-find-why/ - https://ubuntuforums.org/showthread.php?t=2014443 (probably only relevant if your device was recently formatted) Is jbd2 the only process with high IO utilization, or do you see anything else in iotop with a high percentage? There are a lot of Google results for this issue, attributable to a variety of causes. Sent with ProtonMail Secure Email. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, November 22, 2019 4:59 PM, John Jason Jordan <[email protected]> wrote: > Ever since my recent dist-upgrade from Xubuntu 16.04 to 18.04 I have > been having continual disk activity. Every 30 seconds or so the drive > light comes on and stays on solid for about five seconds. The disk > activity is so intense that other operations are hindered, even mouse > movement is jerky. > > I ran 'sudo iotop' and in the activity the Command column is filled > with [jbd2/sdb2-8]. All I can tell you about that list of letters and > numbers is that sdb2 is my /home partition. I've looked all over for an > iotop translation guide to convert those numbers to something > meaningful to humans, but I have failed. > > Any ideas or suggestions are welcome! > > PLUG mailing list > [email protected] > http://lists.pdxlinux.org/mailman/listinfo/plug _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
