Massimo-B

btw. I always have a LUKS device between hardware and btrfs, does that matter for these tests? I'm testing currently with a single USB device, doing a large btrfs send/receive...

_hdparm -W_ says `write-caching = not supported`. The only difference was, when crashing I had the option _nodiscard_ set. Now for testing I just do: ``` # cryptsetup luksOpen --allow-discards...

> You could attach the disk directly to SATA once, then disable write caching via `smartctl` and save it to the device permanently. It's a PCIe NVMe. So you mean,...