I moved to Ubuntu 20.04 and I do not have that problem anymore. I stopped with writing directly after the login the value to the file /sys/module/zfs/parameters/zfs_arc_max.
I now only rely on "options zfs zfs_arc_max=3221225472" in /etc/modprobe.d/zfs.conf. Problem solved in 20.04 and I tried it by loading various VMs including Windows 10 and run the updates for those VMs. The L1ARC size never exceeded 3.01 GB of the 3.00 GB I allowed. I knew it would exceed for a short period the max value, but in 19.10 at the time of the bug report, it did exceed it sometimes with 1 GB or more. I use and used conky to display L1ARC values constantly; L1ARC size uncompressed; L1ARC size compressed; max allowed vale and L1ARC hit rate and I have a tweaked bar display that would allow up to 102% :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1854480 Title: zfs_arc_max not working anymore in zfs 0.8.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1854480/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
