I enabled -proposed and installed 4.4.0-1088-aws #99-Ubuntu, and again went through the test case on a c5.large instance on aws.
The problem is solved and performance is restored, and performs the same as a non-snapshot mounted disk. Again, we can see merging has been enabled with: $ cat /sys/block/nvme1n1/queue/nomerges 0 The problem is fixed. Happy with verification status of done. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1833319 Title: Performance degradation when copying from LVM snapshot backed by NVMe disk To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1833319/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
