On 15/04/15 15:38, Pat Riehecky wrote:
>
>
> On 04/15/2015 09:13 AM, John Pilkington wrote:
>> On 15/04/15 14:37, Pat Riehecky wrote:
>>> can I have you run:
>>>
>>> yum clean expire-cache
>>>
>>> and see if the errors persist?
>>>
>>> Pat
>>
>> I've been through the sequence twice.  Still exactly the same. Thanks.
>>
>> John
>
> What is the output of
>
> df -h /var/cache/yum
>
> Pat

[john@HP_Box ~]$ df -h /var/cache/yum
Filesystem           Size  Used Avail Use% Mounted on
/dev/mapper/sl-root   50G   12G   39G  23% /
[john@HP_Box ~]$

I downloaded (with Firefox) 
http://ftp2.scientificlinux.org/linux/scientific/7x/x86_64/updates/security/repodata/primary.sqlite.bz2

It's 764.2 KiB.  And I don't see a problem unless 7x-security is enabled.