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.
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.