On Sun, Jun 28, 2020 at 9:04 AM <alexandrebfarias(a)gmail.com> wrote:
>(if Alexandre is willing to do some further
>testing to put numbers on the problem)?
I'm willing to perform further testing.
Do you recall what mount options you were using? In particular this
sounds like a side effect of using the discard mount option with
certain SSDs. This is a significant motivation of the new
discard=async mount option for btrfs since kernel 5.6.
Each file system's discard behavior is different. XFS has gone through
a few iterations.
--
Chris Murphy