Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Tue, 20 Oct 2009 07:58:39 -0500
Due to the nature of my business, I'd like to have BackupPC perform one full backup and then have incremental backups continue indefinitely. Is the only way to do this, is to set the parameters in co
Author: "Michael Stowe" <mstowe AT chicago.us.mensa DOT org>
Date: Tue, 20 Oct 2009 09:40:14 -0500
Is there a point to doing this? Note that if you use rsync, only the changed files are transferred even during a full backup... -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA
Author: Les Mikesell <lesmikesell AT gmail DOT com>
Date: Tue, 20 Oct 2009 09:45:19 -0500
That's generally a bad idea. Incremental backups with non-rsync methods won't catch new files created by methods that maintain old timestamps or the new locations of files under renamed directories.
Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Tue, 20 Oct 2009 10:34:10 -0500
Yes, in my config.pl I have: $Conf{XferMethod} = 'rsync'; I'm doing this because it's what management wants, to be able to restore a file from any backup, so the backups will have to span indefinitel
Author: "Michael Stowe" <mstowe AT chicago.us.mensa DOT org>
Date: Tue, 20 Oct 2009 10:45:14 -0500
Since files are pooled, there's really no downside to you doing full backups every 7 days and incrementals every night, and just increasing your retention periods to something you can live with. If y
Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Tue, 20 Oct 2009 11:10:51 -0500
I'm confused on what my configuration parameters should be then, to keep a full every other week, plus incrementals for that two week period, but retain forever. does this look correct? $Conf{FullKee
Author: "Tyler J. Wagner" <tyler AT tolaris DOT com>
Date: Tue, 20 Oct 2009 17:49:55 +0100
Hi Adam, Storing indefinitely is only a disk capacity issue. The question is: to what granularity do you want old backups kept? Do you want to be able to recover the file 2 years, 3 months, and 2 day
Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Tue, 20 Oct 2009 12:42:07 -0500
Thanks, Disk capacity really isn't much of an issue. Disks are getting larger and cheaper, storage ability is expanding with 64-bit Linux + RAID + xfs file system + LVM + iSCSI. The config.pl comment
Author: Les Mikesell <lesmikesell AT gmail DOT com>
Date: Tue, 20 Oct 2009 12:58:20 -0500
If you have many logfiles, mailboxes, or database files you'll burn up a lot of space keeping every incremental. Do you need to be able to restore from any day's backup or would one a week be enough
Author: "Tyler J. Wagner" <tyler AT tolaris DOT com>
Date: Tue, 20 Oct 2009 20:22:02 +0100
Regards, Tyler -- "About astrology and palmistry: they are good because they make people vivid and full of possibilities. They are communism at its best. Everybody has a birthday and almost everybody
Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Wed, 21 Oct 2009 09:11:41 -0500
If I wanted to change my schedule so that I'd keep 6 weeks of dailies, 8 weeks of 2 week periods, 13 periods of 4 weeks, 0 8 weeks, 16 of 16 weeks, and delete them after they age 1825 days, then all
Author: "Tyler J. Wagner" <tyler AT tolaris DOT com>
Date: Wed, 21 Oct 2009 15:35:20 +0100
That is correct. But you'd also want to adjust the IncrKeepCnt to 8*6 = 42, to keep those dailies. Regards, Tyler -- "About astrology and palmistry: they are good because they make people vivid and f
Not quite!! Assuming the following $Conf{FullPeriod} = 6.97; Then $Conf{FullKeepCnt} = ['6','8','13','0','16']; keeps 6 full backups at weekly intervals ( 6.97 days or 1 week ) 8 full backups at 2 we
Author: Holger Parplies <wbppc AT parplies DOT de>
Date: Thu, 22 Oct 2009 18:01:53 +0200
Hi, Tyler J. Wagner wrote on 2009-10-21 15:35:20 +0100 [Re: [BackupPC-users] how to have 1 full backup + incrementals forever?]: for the archives, 8*6 is 48, not 42. Remember: "what do you get if you
Author: "Tyler J. Wagner" <tyler AT tolaris DOT com>
Date: Thu, 22 Oct 2009 17:10:16 +0100
I stared at that math for at least 30 seconds before sending. I suppose I shouldn't respond to list mail 2 hours past bedtime. :) Tyler -- "One of the main causes of the fall of the Roman Empire was
Author: Adam Williams <awilliam AT mdah.state.ms DOT us>
Date: Thu, 22 Oct 2009 11:52:35 -0500
Actually, I'm a little confused. shouldn't it be 6x6=36? 6 weeks of 6 incrementals each week. -- Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you n