Ah, OK. So this looks like it was really a bug with vol_id where it was giving you the UUID for the old LUKS partition, so when you searched for the UUID of the old LUKS partition, findfs didn't find it because it correctly identified it as an ext3 partition.
I've received a patch to identify a crypto_LUKS into e2fsprogs, so I'm going to want to make sure we don't misidentify a previously old LUKS partition. I also want to make sure that mke2fs is zapping the location where the LUKS partition was located so we don't have this problem in the future.
Ah, OK. So this looks like it was really a bug with vol_id where it was giving you the UUID for the old LUKS partition, so when you searched for the UUID of the old LUKS partition, findfs didn't find it because it correctly identified it as an ext3 partition.
I've received a patch to identify a crypto_LUKS into e2fsprogs, so I'm going to want to make sure we don't misidentify a previously old LUKS partition. I also want to make sure that mke2fs is zapping the location where the LUKS partition was located so we don't have this problem in the future.