I am also seeing this issue with zfs and l2arc cache on an NVMe and 4.10.14 on zesty. I've seen it in the past with btrfs, and a bcache cache on NVMe as well, but not with the bcache cache on a SATA SSD. I will move my zfs l2arc cache to a SATA SSD to see if that fixes suspend. This is probably an issue in the NVMe kernel stack.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1670137 Title: zfs l2arc cache inhibits proper suspend Status in zfs-linux package in Ubuntu: Invalid Bug description: Please see: 2017-03-05 09:03 2017-03-05 14:03 UTC KernelOops linux-image-4.4.0-31-generic https://errors.ubuntu.com/oops/7bb2122e-01b1-11e7-ba2a-fa163e839e11 Running zfs [root] with l2arc cache enabled fails to suspend properly, screen goes blank but power stays on, when I disable the cache it works fine. Unsure if this happens with non-root install of zfs, slog does not cause this problem. Linux mp 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ii zfs-initramfs 0.6.5.6-0ubuntu15 all Native OpenZFS root filesystem capabilities for Linux ii zfs-zed 0.6.5.6-0ubuntu15 amd64 OpenZFS Event Daemon (zed) ii zfsutils-linux 0.6.5.6-0ubuntu15 amd64 Native OpenZFS management utilities for Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1670137/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
