Cryptsetup re-encrypt with SHA-512 ?

[Sreyan Chakravarty]

Is it possible to re-encrypt a partition with the

cryptsetup reencrypt

command, to use the SHA-512 hash ?

Currently, my partition uses SHA-256, so I want to reencrypt without losing
any data. I have heard that the cryptsetup reencrypt does online
re-encryption, but the man page is not clear about how you can introduce a
new hash.

Is it even possible ?

[Sreyan Chakravarty]

cryptsetup reencrypt --hash sha512 /dev/sdx

This works but it will re-encrypt the entire device.

On Tue, Apr 21, 2020 at 1:30 PM Sreyan Chakravarty 
wrote:
> Is it possible to re-encrypt a partition with the
>
> cryptsetup reencrypt
>
> command, to use the SHA-512 hash ?
>
> Currently, my partition uses SHA-256, so I want to reencrypt without
> losing any data. I have heard that the cryptsetup reencrypt does online
> re-encryption, but the man page is not clear about how you can introduce a
> new hash.
>
> Is it even possible ?
>
> --
> Regards,
> Sreyan Chakravarty