I wrote a few scripts to help turn flexbackup into a disk-to-usbdisk
backup system, maintaining a set duration of backups. You could
accomplish much the same thing with some fancy crontab+shell scripts,
but I prefer using Perl for anything moderately or more so complex.
The first is rmob.pl at
http://downloads.scalableinformatics.com/downloads/backup/rmob.pl . It
will look over the names in the directory pointed to by
--dir=/path/to/backup/files and remove any that are older than
--age=number_of_days . By default it will work in the current directory
and remove only the back files that are older than 30 days.
The second is rotate_backup.pl, which will adjust a soft link to the
backup directory (as specified in the /etc/flexbackup.conf file), to
point to one of several usbdisk units hanging off /media/usbdisk1,
/media/usbdisk2, ... , /media/usbdiskN . Based upon the number of disks
(hardwired on the 6th line of the script), and the number of days in a
month (hardwired to 31), it will evenly divide the month into 31/N
slices, and set an index equal to the integer portion of (1+31/N) which
is then used to construct the soft link to the appropriate USB2 hard
disk. You can set the particular directory where your usbdisk are
mounted using the --dir=/path/to/usbdisk which the script will use as a
template to create the soft link to --link=/path/to/link/to/for/backup .
Couple these two with a few USB2 drives, and a hotplug system that
mounts things like this in /media/usbdisk*, as well as a flexbackup
config which always backs up to the link (/media/backup in this case),
and some simple crontabs
05 0 * * * /usr/sbin/rotate_backup.pl /srv/backup/rotate-`date -I`.log
21
5 0 * * * /usr/sbin/rmob.pl --age 15 --dir /media/backup
30 0 1,15 * * /usr/bin/flexbackup -set all
/srv/backup/backup-all-`date -I`.log 21
30 0 2-14,16-31 * * /usr/bin/flexbackup -set user -level differential
/srv/backup/backup-user-`date -I`.log 21
30 6 2-14,16-31 * * /usr/bin/flexbackup -set system -level differential
/srv/backup/backup-system-`date -I`.log 21
(note: you could simply do incremental backups rather than differentials)
and you have a rather complete rotating backup system to USB2 media.
Quite simple really.
Joe
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: [EMAIL PROTECTED]
web : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 734 786 8452
cell : +1 734 612 4615
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