[Babase] Papio Information

Karl O. Pinc kop at meme.com
Fri Jun 12 11:31:10 EDT 2009


On 06/12/2009 06:05:49 AM, Susan Alberts wrote:
> 
> On Jun 11, 2009, at 11:28 AM, Ryan Hardy wrote:
> 
>> On Jun 10, 2009, at 6:14 PM, Karl O. Pinc wrote:
>> 
>>> The one important take-away point that differs from the previously
>>> explained backup plan is that backups are put into the backup system
>>> only every other day.  We do keep the prior days backup, for 1 day
>>> only, on disk on papio until it's overwritten by the next days  
>>> backup.
>>> So, in case of disaster we could lose 2 days of work.
>> 
>> As it stands, the backups fire off at about 1:00am daily.  However,  
>> that's not really guaranteed.  From my brief perusal of the logs, it  
>> looks like papio generally completes around 2:30am or so.  The local  
>> backup on papio is done through cron.daily, so it should be done  
>> sometime around 4am.
>> 
>> We could easily change the local backup to occur later in the day  
>> (say, 11pm) so that it would complete before the tape backups fire  
>> off.  That would minimize any potential data loss.  Or the script  
>> could keep multiple copies of the local backup.  The former seems a  
>> bit less work intensive, but neither would be particularly  
>> challenging.  As you said, the data storage is really not too much  
>> of an issue, since the local backups are compressed.
>> 
> 
> Thanks for these suggestions Ryan. Either of these sounds fine to me,  
> but I would go with whatever Karl recommends.

Let me see if I can't whack something together over the weekend
to modify the script so that we're sure to have at least 1 complete
backup on disk at any one time.   That way no matter what happens
with the tape backup timing there won't be an issue.

Karl <kop at meme.com>
Free Software:  "You don't pay back, you pay forward."
                  -- Robert A. Heinlein



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