cryptsetup-reencrypt doesn't cleanup log file after getting interrupted in init phase
cryptsetup-reencrypt --new --reduce-device-size 4M /dev/sdc
Interrupt it immediately by ctrl+c on first interactive prompt. Run same command again to see:
cryptsetup-reencrypt --new --reduce-device-size 4M /dev/sdc
Log file LUKS-cafecafe-cafe-cafe-cafe-cafecafeeeee.log exists, resuming reencryption.
Device LUKS-cafecafe-cafe-cafe-cafe-cafecafeeeee.new doesn't exist or access denied.