Re: Wiping an unencrypted SSD in preparation for encryption

[Reco <recoverym4n@enotuniq.net>]

	Hi.

On Fri, Jun 11, 2021 at 10:59:21AM -0400, Polyna-Maude Racicot-Summerside wrote:
> Because yes there's a cost and it's speed.

I call this cost acceptable:

# pv /dev/sda3 > /dev/zero
^C50GiB 0:00:04 [ 385MiB/s] 


# cryptsetup status /dev/mapper/sda3_crypt
/dev/mapper/sda3_crypt is active and is in use.
  type:    LUKS1
  cipher:  aes-xts-plain64
  keysize: 512 bits
  key location: dm-crypt
  device:  /dev/sda3

# pv /dev/mapper/sda3_crypt > /dev/zero
^C68GiB 0:00:05 [ 372MiB/s]

Encryption costs me whopping 13 MB/s out of 385.


And note that it's a 4 years old laptop (and it was pretty cheap when I
bought it) with SSD surpassing its age.

Reco