Actually we cannot be sure no. The server didn't have any metrics prior to few days ago and the issue was already there.
It's worth nothing that few servers have this bcache configuration, because the cache mode is configured as writethrough and the load is pretty significant. So no last "good" version. Actually, we have various IO wait issue on another platform (but running xenial-hwe kernel) and we suspected bcache already. Mentioning it to show that bcache behavior seems to be related to some disk performance since quite some time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898786 Title: Issue with bcache bch_mca_scan causing huge IO wait To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1898786/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
