I am using a $10/month droplet with Ubuntu 14.04. I noticed that a process named “jbd2/vda1-8” pops up from time to time. As soon as it runs, all Apache processes become blocked and my entire server becomes unresponsive.
Some output from “ps auxf” command:
Wed May 27 15:58:10 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
Wed May 27 15:58:11 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
www-data 27636 0.0 0.9 406192 9604 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
Wed May 27 15:58:12 UTC 2015
root 199 0.0 0.0 0 0 ? D May19 6:52 \_ [jbd2/vda1-8]
www-data 27362 0.1 1.1 405668 11672 ? D 15:56 0:00 \_ /usr/sbin/apache2 -k start
www-data 27636 0.0 0.9 406192 9604 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
www-data 27685 0.3 1.3 408368 13812 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
www-data 27738 0.2 0.9 405252 9340 ? D 15:57 0:00 \_ /usr/sbin/apache2 -k start
The “top” command also shows “wa” above 90.
I realized it is something to do with disk journaling. Can it be disabled, or is anything I can do to reduce the load from “jbd2” without affecting my droplet?
Thanks for any advice!
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Me too, did you get the way to solve this problem?
I wrote ticket to support. And they changed my server without changing my IP address. No such problems after month using now.
Same issue here on my droplet which is in NY2. This thread helped a lot in identifying that the problem was out of my hands. DO support was really great and my droplet which had 20GB of used disk space took only ~5 minutes to migrate and come back online.
The difference is night and day:
showing 3 day history, with red line showing the migration downtime
I also had some random I/O loads and [jbd2/vda1-8] process behaving badly on my 80$ droplet. Migration to another hypervisor via DO’s support solved the issue. Two days already so far so good.
Thanks for the info!
I also see this, and it is on a $40/month droplet which also happens to be my main db server for production! This results in 1-2 minutes of really slow response every 30 minutes to an hour. Please any help?