# Swap files must be nocow on Btrfs.
$CHATTR_PROG +C "$fname" > /dev/null 2>&1
_pwrite_byte 0x61 0 "$sz" "$fname" >> $seqres.full
# Swap files must be nocow on Btrfs.
$CHATTR_PROG +C "$fname" > /dev/null 2>&1
_pwrite_byte 0x61 0 "$sz" "$fname" >> $seqres.full