** Description changed: - autotrim should be enable and people upgrading should have trim enabled - to prevent performance degration on SSD over time + [Impact] + * Autotrim (a fresh feature in 0.8) hasn’t been enabled on purpose on new ZFS installation. + * Now that we personnaly ran it on our SSD for some weeks, we have been able to experiement it and test its robustness (empirically) + * We need to enable it so that users with SSD don’t suffer from performance degration over time, as in traditional ubuntu which has trim supported. + + [Test Case] + 1. zpool status -t <pool> -> the pool was never trim. + 2. zpool get autotrim <pool> -> should be off + 3. Install ZSys update + 4. zpool status -t <pool> -> trimming is done or in progress. + 5. zpool get autotrim <pool> -> should be on + + + [Regression Potential] + * The upgrade set autotrim on both rpool and bpool (and only on them) to not impact other pools. + * As autotrim is only for new write, we issue a manual zpool trim commands over them, which is ran in background by the kernel zfs module. The commands exits immediately. + * We also tested installations without bpool.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881540 Title: Enable trim support for ugprading users To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zsys/+bug/1881540/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
