Bug 1022028 - package count doesn't match with actual packages in repodata
package count doesn't match with actual packages in repodata
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: createrepo (Show other bugs)
Unspecified Unspecified
low Severity low
: rc
: ---
Assigned To: Valentina Mukhamedzhanova
Karel Srot
Depends On: 1022001
Blocks: 578256
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Reported: 2013-10-22 10:07 EDT by Daniel Mach
Modified: 2014-09-09 05:11 EDT (History)
8 users (show)

See Also:
Fixed In Version: createrepo-0.9.9-23.el7
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 1022001
Last Closed: 2014-06-13 05:40:56 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Make sure the "packages" attribute is always correct. (2.84 KB, patch)
2013-10-23 06:02 EDT, Zdeněk Pavlas
no flags Details | Diff

  None (edit)
Description Daniel Mach 2013-10-22 10:07:40 EDT
+++ This bug was initially created as a clone of Bug #1022001 +++

Package version:

How to reproduce:
1) create a file list with existing packages
2) append a line with package that does not exist
3) run $ createrepo -i <package-list> .

zegrep '<package |packages=' repodata/*primary*xml*
<metadata xmlns="http://linux.duke.edu/metadata/common" xmlns:rpm="http://linux.duke.edu/metadata/rpm" packages="3">
<package type="rpm">
<package type="rpm">

Header says 3 packages while there are just 2 of them in metadata.
Comment 1 Zdeněk Pavlas 2013-10-23 04:42:14 EDT
We'd like to create XML files in one pass, and since the package count is saved first, updating it when some of the RPM files could not be processed is not trivial.  I see three possible solutions:

a) add an extra stat() pass in "createrepo -i" case, and remove non-existing files from the list. Then we'll use the correct package count. However, this won't work 100% .. eg zero-sized *.rpm files fail too late.

b) re-compress all three *.xml files when some RPMs could not be processed, updating the "packages" attribute. It involves some re-parsing of the XML data, and is pretty ugly. However, (when it works) it covers all failure modes.

c) do some sanity checking on the file list first, then run as usual. When some files could not be processed, don't try to fix up the package count. exit with an error instead.

IMO viable solution is implementing either b or a+c.  If all you want to handle is "file not found", then a+c is probably better (although I've implemented b already).
Comment 2 Daniel Mach 2013-10-23 05:59:13 EDT
What about following:
* scan for all files (no stat) from package list (verify they're on disk)
* set packages=<package count>
* if a package fails to read
  * report error
  * don't write new repodata
  * exit with non-0 exit code
Comment 3 Zdeněk Pavlas 2013-10-23 06:02:40 EDT
Created attachment 815304 [details]
Make sure the "packages" attribute is always correct.
Comment 4 Zdeněk Pavlas 2013-10-23 06:07:17 EDT
The patch above checks all local files specified with -i option to be readable first. When some rpms fail after the "packages" count has been already written, it's a fatal error ($? == 1).
Comment 5 Zdeněk Pavlas 2014-01-15 11:29:30 EST
We can merge the upstream patch.

commit 84a237f6a2e661879147e1ee5f9a2be984267991
Author: Zdenek Pavlas <zpavlas@redhat.com>
Date:   Wed Oct 23 11:42:02 2013 +0200

    Make sure the "packages" attribute is always correct. BZ 1022001
    We create XML files in one pass and the package count is stored
    first. We need the count to be correct, so when a package is
    being skipped, it must be a fatal error.
Comment 9 Ludek Smid 2014-06-13 05:40:56 EDT
This request was resolved in Red Hat Enterprise Linux 7.0.

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