[Spacewalk-list] How to force a channel repodata rebuild?

[Tomas Lestach]

> When I mentioned the contents of the repodata, after our initial
> removal and triggering Spacewalk to rebuild it, looked identical
> along with modification times, I am referring to the modification
> time as seen on the filesystem via an "ls" command as well as what
> the Channel information showed. Our incident was on May 2nd whereas
> the repodata for our centos6.2-x86-64 channel was showing a modtime
> of April 22nd both before and after the rebuild of the repodata. It
> was only after we removed a package and then re-sync'ed the contents
> of the channel did we see an updated modtime on the repodata and our
> issue disappeared.

As Michael correctly stated, we set the last modified date of the repodata
files to the 'channel last modified' right after the files are generated.
(We use the same date for timestamp values in the xml files.)

If you have removed and pushed the same package back (/re-synced), you shall
get the same repodata generated as before just with different modification
dates + different timestamp values (similar to [2]).
If you just remove the repodata files and let them newly regenerate, you
shall get the same content + timestamps as before.

I hope, that's what you observe.

--
Tomas Lestach
RHN Satellite Engineering, Red Hat


> 
> 
> Thanks,
> Jon Miller
> 
> 
> [1]: Commands used to compare old repodata vs. current:
> 
> mkdir tmp && cd tmp
> tar -xzvf /tmp/repodata_20130502.tgz
> var/cache/rhn/repodata/centos6.2-x86_64
> mv var/cache/rhn/repodata/centos6.2-x86_64 centos6.2-x86_64.bad
> rm -rf var
> cp -pr /var/cache/rhn/repodata/centos6.2-x86_64 centos6.2-x86_64.good
> gunzip */*gz
> sed -i -e 's/><package/>\n<package/g' -e 's/><file/>\n <file/g'
> */*.xml
> git diff --no-index --color-words *.bad/primary.xml
> *.good/primary.xml
> git diff --no-index --color-words *.bad/other.xml *.good/other.xml
> git diff --no-index --color-words *.bad/filelists.xml
> *.good/filelists.xml
> git diff --no-index --color-words *.bad/repomd.xml *.good/repomd.xml
> # only diff that produced output
> 
> 
> [2]: Actual diff from the repomd.xml file
> 
> 
> $ diff -u *.bad/repomd.xml *.good/repomd.xml
> --- centos6.2-x86_64.bad/repomd.xml 2013-05-07 08:07:13.000000000
> -0700
> +++ centos6.2-x86_64.good/repomd.xml 2013-05-07 08:07:16.000000000
> -0700
> @@ -1,2 +1,2 @@
> <?xml version="1.0" encoding="UTF-8"?>
> -<repomd xmlns=" http://linux.duke.edu/metadata/repo "><data
> type="primary"><location href="repodata/primary.xml.gz"/><checksum
> type="sha">63cc0cb94e9c0fbc958cafd73952ba02e612f239</checksum><open-checksum
> type="sha">bba7811915fee90f9c6ae257ed10954731d70ac7</open-checksum><timestamp>1366682902</timestamp></data><data
> type="filelists"><location
> href="repodata/filelists.xml.gz"/><checksum
> type="sha">9fdb004ad90e60e5e34722e553faadac68fa28bd</checksum><open-checksum
> type="sha">eef5c815e9978738055d25d5cb9bc272e0b3e146</open-checksum><timestamp>1366682902</timestamp></data><data
> type="other"><location href="repodata/other.xml.gz"/><checksum
> type="sha">6b928d9937c117b8d0d90171cdb7087b0a841556</checksum><open-checksum
> type="sha">67d55b493f3d89bb62645aff637d98e6df3ac704</open-checksum><timestamp>1366682902</timestamp></data><data
> type="group"><location href="repodata/comps.xml"/><checksum
> type="sha">01beeafb865b9e6bcefc9b3272ebcb1a93e16da0</checksum><timestamp>1366682902</timestamp></data></repomd>
> \ No newline at end of file
> +<repomd xmlns=" http://linux.duke.edu/metadata/repo "><data
> type="primary"><location href="repodata/primary.xml.gz"/><checksum
> type="sha">63cc0cb94e9c0fbc958cafd73952ba02e612f239</checksum><open-checksum
> type="sha">bba7811915fee90f9c6ae257ed10954731d70ac7</open-checksum><timestamp>1367522246</timestamp></data><data
> type="filelists"><location
> href="repodata/filelists.xml.gz"/><checksum
> type="sha">9fdb004ad90e60e5e34722e553faadac68fa28bd</checksum><open-checksum
> type="sha">eef5c815e9978738055d25d5cb9bc272e0b3e146</open-checksum><timestamp>1367522246</timestamp></data><data
> type="other"><location href="repodata/other.xml.gz"/><checksum
> type="sha">6b928d9937c117b8d0d90171cdb7087b0a841556</checksum><open-checksum
> type="sha">67d55b493f3d89bb62645aff637d98e6df3ac704</open-checksum><timestamp>1367522246</timestamp></data><data
> type="group"><location href="repodata/comps.xml"/><checksum
> type="sha">01beeafb865b9e6bcefc9b3272ebcb1a93e16da0</checksum><timestamp>1367522246</timestamp></data></repomd>
> \ No newline at end of file
> 
> 
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