On Thu, 6 Dec 2018 06:11:46 +0000 Robert White <rwhite@xxxxxxxxx> wrote: > So it would be dog-slow, but it would be neat if BTRFS had a mount > option to convert any TRIM command from above into the write of a zero, > 0xFF, or trash block to the device below if that device doesn't support > TRIM. Real TRIM support would override the block write. There is such a project: "dm-linear like target which provides discard, but replaces it with write of random data to a discarded region. Thus, discarded data is securely deleted." https://github.com/vt-alt/dm-secdel -- With respect, Roman
