dmsetup table | grep veracrypt
veracrypt2: 0 3904923136 crypt aes-xts-plain64 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 256 8:34 256
dmsetup reload veracrypt2 --table "0 3904923136 error"
dmsetup suspend --noflush veracrypt2
dmsetup resume veracrypt2
(?)zpool clear backup-usb
remove from veracrypt UI
echo "0 3904923136 zero" | dmsetup reload veracrypt2
dmsetup suspend --noflush veracrypt2
dmsetup resume veracrypt2
dmsetup remove veracrypt2
re-setup dm table from veracrypt UI
zpool clear backup-usb
scrub will start automatically
errors will be found
export pool
reimport
scrub again