[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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