hi ya...
my favorite topic for "flame wars"....next to dns flames...
I like tar for backups....
- and i dont worry about restore too much...
since if you need to restore...something else is probably
(seriously) wrong too
- restoring a file from tape is too too painful...
since tapes are expensive compared to $100 for 20Gb of disks
I only use disks for backup of systems...
- disks backups are fast and can be almost hot swappable
- remember too that you have stuff on the original cdrom
so i rarely if ever backup /usr/X11R6 /lib etc..etc...
I run incremental and full backups from cron:
- Backups should be done on a different machine....and
different disk than the system disk
/mnt/Backup.daily is the daly backup disks on system1
/mnt/Backup.weekly is the weekly backup disk on system2
/mnt/Backup.monthly is the montly backup disk on system3
for full backups.... i remove "modified files" from find
-----------
from cron...i call a script that does...something like this..
- daily incremental
tar zcf /Backup.daily/month_date_week.tgz
` find /home /etc /root /var -mtime -2 -prnt`
- change -2, -3, -4, -5, -6, -7 for each
successive daily incremental backup
- weekly incremental
tar zcf /Backup.weekly/month_date_week.tgz
` find /home /etc /root /var -mtime -7 -prnt`
- reset counters
- monthly incremental
tar zcf /Backup.monthly/month_date_week.tgz
` find /home /etc /root /var -mtime -32 -prnt`
---------------------------------------------
also keep in mind.... incremental backups is only good if
the previous incremental backup was good and saved too...
so incremental backups is alwys done since "last full bckup"
----------------------------------------------
Reasons for backup failures...
- disks gets full
- network fails
- tape was not changed
- bad media
have fun linuxing
alvin
On Mon, 4 Sep 2000, Robert Waldner wrote:
>
> Hi!
>
> At the moment I´m cycling through a few tapes doing backups every
> week or so with
> tar cvz --exclude /proc --exclude /dev --exclude /tmp / >/dev/st0
>
> Are there any precautions I should take that I have forgotten/not yet
> heard about? I can do a recover to someplace (eg /tmp/recover) and get
> the files I need but is this considered good practice or am I missing
> something?
>
> Also, is there a possibility to find out (rather than trying through
> tar tv(Iz)) if a tape is tar.gz, tar.bz2 or plain tar?
>
> Thanks for any advice,
> &rw
> --
> / Robert Waldner <[EMAIL PROTECTED]> | Phone: +43 1 89933 0 Fax x533 \
> \ KPNQwest/AT tech staff | Diefenbachg. 35 A-1150 Wien /
>
>
>
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