Luks File: Difference between revisions
Jump to navigation
Jump to search
| (2 intermediate revisions by the same user not shown) | |||
| Line 7: | Line 7: | ||
dd of=crypt bs=1 count=0 seek=900G | dd of=crypt bs=1 count=0 seek=900G | ||
It will not allocate the space immediately. | It will not allocate the space immediately. We can fill it later. | ||
losetup /dev/loop0 /path/to/crypt | |||
cryptsetup luksFormat /dev/loop0 | |||
cryptsetup luksOpen /dev/loop0 crypt | |||
If we fill the mapper with zeros it will write random data to crypt (Really?) | |||
dd if=/dev/zero of=/dev/mapper/crypt | |||
mkfs.ext2 /dev/mapper/crypt | |||
mount | |||
==Notes== | ==Notes== | ||
*http://stackoverflow.com/questions/257844/quickly-create-a-large-file-on-a-linux-system | *http://stackoverflow.com/questions/257844/quickly-create-a-large-file-on-a-linux-system | ||
*http://wiki.centos.org/HowTos/EncryptedFilesystem | *http://wiki.centos.org/HowTos/EncryptedFilesystem | ||
Latest revision as of 19:07, 2 February 2013
My Info
It is reccomended to fill and encrypted data container with random data.
You can however if you are in a hurry use a sparse file.
dd of=crypt bs=1 count=0 seek=900G
It will not allocate the space immediately. We can fill it later.
losetup /dev/loop0 /path/to/crypt
cryptsetup luksFormat /dev/loop0
cryptsetup luksOpen /dev/loop0 crypt
If we fill the mapper with zeros it will write random data to crypt (Really?)
dd if=/dev/zero of=/dev/mapper/crypt
mkfs.ext2 /dev/mapper/crypt
mount