Description of problem:

yum-deprecated and dnf are both configured with:
cachedir=/usr/src/yum/$basearch/$releasever
keepcache=1

One affected repo:

% ls -lsr /usr/src/yum/x86_64/24/virtualbox*
12 -rw-r--r--. 1 root root  9700 Nov 17 09:27 /usr/src/yum/x86_64/24/virtualbox.solv
20 -rw-r--r--. 1 root root 17760 Nov 13 17:17 /usr/src/yum/x86_64/24/virtualbox-filenames.solvx

/usr/src/yum/x86_64/24/virtualbox-541372c70ed0d346:
total 4
4 drwxr-xr-x. 2 root root 4096 Sep  8 22:08 repodata

/usr/src/yum/x86_64/24/virtualbox-0842b1a6c6fb14be:
total 4
4 drwxr-xr-x. 2 root root 4096 Nov 17 13:12 repodata

/usr/src/yum/x86_64/24/virtualbox:
total 24
8 -rw-r--r--. 1 root root  951 Nov 11 16:20 repomd.xml
8 -rw-r--r--. 1 root root 3437 Nov 11 16:20 primary.xml.gz
4 drwxr-xr-x. 2 root root 4096 Nov 10 21:54 packages
4 drwxr-xr-x. 2 root root 4096 Nov 12 02:19 gen
0 -rw-r--r--. 1 root root    0 Nov 18 17:30 cachecookie

the 'virtualbox' directory was created by yum(-deprecated).  The other two were invented by dnf.

It isn't just virtualbox either:

ls /usr/src/yum/x86_64/24
@System.solv                         google-earth-filenames.solvx        rawhide-filenames.solvx          tor-source
adobe-linux-x86_64                   google-earth.solv                   rawhide-presto.solvx             tor-source-00caf85cb4c58527
adobe-linux-x86_64-38ad0a49b0acdf73  google-talkplugin                   rawhide.solv                     tor-source-filenames.solvx
adobe-linux-x86_64-filenames.solvx   google-talkplugin-dfa34928d410c534  rpmfusion-free                   tor-source.solv
adobe-linux-x86_64.solv              google-talkplugin-filenames.solvx   rpmfusion-free-ba628c912dc71c4c  tor.solv
cuda                                 google-talkplugin.solv              rpmfusion-free-debuginfo         virtualbox
cuda-84f770bbf2598385                last_makecache                      rpmfusion-free-filenames.solvx   virtualbox-0842b1a6c6fb14be
cuda-8c0c983d4d45dc9d                rawhide                             rpmfusion-free.solv              virtualbox-541372c70ed0d346
cuda-filenames.solvx                 rawhide-2d95c80a1fa0a67d            tempfiles.json                   virtualbox-filenames.solvx
cuda.solv                            rawhide-debuginfo                   timedhosts                       virtualbox.solv
expired_repos.json                   rawhide-debuginfo-b0297fcd3e236bd4  tor
google-earth                         rawhide-debuginfo-filenames.solvx   tor-dd9d1fed82c42a1f
google-earth-17f28a61f303b7a2        rawhide-debuginfo.solv              tor-filenames.solvx

Whole lot of duplicate directories being created there...

Version-Release number of selected component (if applicable):
dnf-1.1.3-1.fc24.noarch

How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info: