Matthew Miller wrote:
On Mon, Feb 01, 2021 at 01:24:53PM +0000, David Howells wrote:
> Matthew Miller <mattdm(a)fedoraproject.org> wrote:
> > Plus, it's 64 bit instead of 32 bit. The 256-bit algorithms are
> > obviously much, much slower and probably not right for a default, but
> > should we consider making xxhash the default for Fedora Linux systems
> > with btrfs?
> Does this affect what's on disk?
Yes; it changes the checksums stored with each block to be in the selected
format. This can only be changed at filesystem creation time.
I guess the real question is: does it increase the required disk space or
does it only fill up bits that would otherwise be padding bits?
Kevin Kofler