Question on change from dnf to dnf5

[Michael D. Setzer II]

Was just looking at /var/cache/dnf and /var/cache/libdnf5

noticed /var/cache/dnf had a lot of older files and directories
/var/cache/lib/dnf5 had a lot less.

moved contents of dnf directory to backup, and ran dnf update to 
see what it would create and nothing was created, but files updated 
in libdnf5 were updated. dnf directory was left empty.

Then ran dnfdragon to see what it would do, and found that dnf 
directory had a lot of files, but the older ones where not there.

So what is best setup. dnf does seem to call dnf5, but is the 
dnfdragon still using the older dnf?

Had a strange issue with 2 machines giving checksum errors with 
WineHQ but 5 other machines not giving error.

find if I copy from /var/cache/libdnf5/WineHQ-9dce16cb982ed15a
directory from machines that work.
# find .
.
./repodata
./repodata/repomd.xml
./repodata/primary.xml.zst
./solv
./solv/WineHQ.solv
./attrs

It will work. On none working machines the directory only has 
./attrs/expired

If I do and dnf clean all; then files all disappear except the 
attrs/expired zero byte file and the errors return??

WineHQ packages                                                                         100% | 800.3 KiB/s | 
237.7 KiB |  00m00s
> > > Downloading successful, but checksum doesn't match. Calculated:

7a01302c17a9ce348c3b055863df8a417ac2fcb41de105236c57b72648907
> > > Downloading successful, but checksum doesn't match. Calculated:

7a01302c17a9ce348c3b055863df8a417ac2fcb41de105236c57b72648907
> > > Downloading successful, but checksum doesn't match. Calculated:

7a01302c17a9ce348c3b055863df8a417ac2fcb41de105236c57b72648907
> > > Downloading successful, but checksum doesn't match. Calculated:

7a01302c17a9ce348c3b055863df8a417ac2fcb41de105236c57b72648907
> > > Librepo error: Yum repo downloading error: Downloading error(s):

repodata/primary.xml.zst - Cannot download, all mirrors were
Repositories loaded.

Restore the files, and once again it works with no errors?
WineHQ packages                                                                         
100% |  23.2 KiB/s |   2.6 KiB |  00m00s

2 machines that get errors are in Nevada with me, while 5 
machines at work just fine are in Guam??

+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[e-mail]                            
 mailto:[e-mail]
 mailto:[e-mail]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+

[Barry]

> On 22 May 2025, at 13:24, Michael D. Setzer II via users  wrote:
>
> Was just looking at /var/cache/dnf and /var/cache/libdnf5

/var/cache/dnf is used by dnf4 and any tools that have not ported to dnf5.

/var/cache/libdnf5 is used by dnf5 and any tools that use dnf5 as a backend.

Barry

[Bob Marčan]

On Thu, 22 May 2025 18:55:34 +0100
"Barry"  wrote:
> > On 22 May 2025, at 13:24, Michael D. Setzer II via users  wrote:
> >
> > Was just looking at /var/cache/dnf and /var/cache/libdnf5
>
> /var/cache/dnf is used by dnf4 and any tools that have not ported to dnf5.
>
> /var/cache/libdnf5 is used by dnf5 and any tools that use dnf5 as a backend.
>
> Barry

Fedota 41, dnf5

I just deleted the contents of the two directory and run the DNF update. Only /var/cache/libdnf5 is again full, /var/cache/dnf is still empty.

[Patrick O'Callaghan]

On Thu, 2025-05-22 at 19:06 +0000, Bob Marčan via users wrote:
> On Thu, 22 May 2025 18:55:34 +0100
> "Barry"  wrote:
> > > On 22 May 2025, at 13:24, Michael D. Setzer II via users  wrote:
> > >
> > > Was just looking at /var/cache/dnf and /var/cache/libdnf5
> >
> > /var/cache/dnf is used by dnf4 and any tools that have not ported to dnf5.
> >
> > /var/cache/libdnf5 is used by dnf5 and any tools that use dnf5 as a backend.
> >
> > Barry
>
> Fedota 41, dnf5
>
> I just deleted the contents of the two directory and run the DNF update. Only /var/cache/libdnf5 is again full, /var/cache/dnf is still empty.

As I understand Barry's answer, that's expected behaviour. Dnf5 doesn't
use /var/cache/dnf.

poc

[Barry]

> On 23 May 2025, at 11:42, Patrick O'Callaghan  wrote:
>
> As I understand Barry's answer, that's expected behaviour. Dnf5 doesn't
> use /var/cache/dnf.

That is correct. Until the transition from dnf4 to dnf5 completes there will to apps using the dnf4 library APIs and thus that old dnf4 folder.

Barry