large file support with filesystem=exfat or filesystem=ntfs can not create veracrypt volume within docker

[larserdmann]

On docker host everything works just fine, but within docker the following create statements does only work for filesystem=fat but not for other filesystems.

Get into docker container with docker exec:

docker exec -it veracrypt bash

in docker container get into testing volume and start test:

cd testing

veracrypt -t -v \
--create "test.vc" \
--size="4500M" \
--volume-type=normal \
--encryption=AES \
--hash=sha-512 \
--filesystem=exfat \
--pim=0 \
-k "" \
--password="test" \
-m=nokernelcrypto \
--non-interactive

//or ntfs version

veracrypt -t -v \
--create "test.vc" \
--size="4500M" \
--volume-type=normal \
--encryption=AES \
--hash=sha-512 \
--filesystem=ntfs \
--pim=0 \
-k "" \
--password="test" \
-m=nokernelcrypto \
--non-interactive

Result on first run:

Done: 100.000%  Speed:  95 MiB/s  Left: 0 s          

Error: No such file or directory:
/dev/mapper/veracrypt1

VeraCrypt::FilesystemPath::GetType:48

in the guest system ls /dev/mapper/ gives

root@guest:/# ls /dev/mapper/
control

but on host system it is

user@host:/# ls /dev/mapper/
control  veracrypt1

Result on next runs, and also on host system:

Error: device-mapper: create ioctl on veracrypt1  failed: Device or resource busy 
Command failed.

To remove the veracrypt device mapper:
cryptsetup close veracrypt1 or dmsetup remove veracrypt1