@Christian - my lsblk output looks very similar to yours. In particular, all device types are reporting discard support; the only difference is the reported discard sizes.
I would suggest that at the end of your tests you check the disk with "debugfs -R dump_unused". I'm seeing disk blocks filled with garbage. I expected them to be filled with zeros. So, I don't think it's just a feature request. Not only has the device announced discard support, but when you read the blocks back they are not zero filled. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1974100 Title: qemu ide/sata disks do not work well with discard/trim To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1974100/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
