Re: Fedora 34 Change: DNF/RPM Copy on Write enablement for all variants (System-Wide Change)

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On Mon, 2020-12-21 at 09:53 -0800, Kevin Fenzi wrote:
> Cool. A few questions inline... 
> 
> On Mon, Dec 21, 2020 at 11:28:51AM -0500, Ben Cotton wrote:
> > https://fedoraproject.org/wiki/Changes/RPMCoW
> > 
> > 
> > == Summary ==
> > 
> > RPM Copy on Write provides a better experience for Fedora Users as
> > it
> > reduces the amount of I/O and offsets CPU cost of package
> > decompression. RPM Copy on Write uses reflinking capabilities in
> > btrfs, which is the default filesystem in Fedora 33.
> 
> What happens if you enable this on non btrfs installs? 
> Does it just not work gracefully? Does it fail somehow? 
It would be slower but still works; see note #5

> https://fedoraproject.org/wiki/Changes/RPMCoW#Notes

Of note, even on systems with Btrfs/XFS that support reflinks, falling
back to copying is still needed for e.g. files in /boot or /boot/EFI


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Michel Alexandre Salim
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