On 03/29/2016 08:55 AM, Orion Poplawski wrote: > I get messages like this fairly frequently on our SL7 servers: > > /etc/cron.daily/0yum-daily.cron: > > Not using downloaded repomd.xml because it is older than what we have: > Current : Fri Mar 25 08:54:39 2016 > Downloaded: Fri Mar 25 08:54:20 2016 > > Today, this is from the sl-security repo: > > -rw-r--r--. 1 root root 3059 Mar 25 08:54 > /var/cache/yum/x86_64/7/sl-security/repomd.xml > > We use a mirroring scheme that is based on time-stamps which may be > aggravating this locally, and are mirroring from > http://ftp1.scientificlinux.org/linux/scientific > > However it seems that the time-stamps of these files should never go > backwards. Is there something going on in the SL staging process causing this? A little more information. Apparently the <revision> tag in the repomd.xml is treated as the timestamp of the file. Currently for the currently downloaded sl-security the revision is: $ grep revision /var/cache/yum/x86_64/7/sl-security/repomd.xml <revision>1458917662</revision> $ ls -l /var/cache/yum/x86_64/7/sl-security/repomd.xml -rw-r--r--. 1 root root 3059 Mar 25 08:54 /var/cache/yum/x86_64/7/sl-security/repomd.xml $ date --date=@1458917662 Fri Mar 25 08:54:22 MDT 2016 $ stat --printf '%y\n' /var/cache/yum/x86_64/7/sl-security/repomd.xml 2016-03-25 08:54:40.000000000 -0600 Now I don't understand how the cached copy ended up with a slightly newer timestamp - possibly due to some munging by yum after download. For the current version on my mirror: # ls -l 7x/x86_64/updates/security/repodata/repomd.xml -rw-r--r--. 1 apache apache 2965 Mar 29 07:46 7x/x86_64/updates/security/repodata/repomd.xml # grep revision 7x/x86_64/updates/security/repodata/repomd.xml <revision>1458917662</revision> So despite being newer and different file, it has the same "revision" as the older one. Perhaps you are manually setting --revision in createrepo? By default it sets revision to the unix timestamp at the start of the run. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane [log in to unmask] Boulder, CO 80301 http://www.nwra.com