Date: Mon, 25 Oct 2004 14:01:08 +0900 From: Rob <spamrefuse@yahoo.com> To: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Backing up a FreeBSD system Message-ID: <417C8894.3000704@yahoo.com> In-Reply-To: <20041024162240.GA11510@saturn.pcs.ms> References: <20041018102125.N30190-100000@maily.netdtw.com> <20041024162240.GA11510@saturn.pcs.ms>
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Martin Schweizer wrote:
> Hello Steve
>
> I copied once a week my filesystems /, /usr and /var to a second hard drive
> with the following cron batch (it also mailed my the important files, fstab,
> dmesg.boot and disklabes):
>
> # Löschen der bestehenden Dateien
> /bin/rm /disk2/backup/*.dmp
>
> # Dump wird erstellt. Wenn nicht erfolgreich (-> exit codes),
> # wird ein Mail an your@isp.com versendet
> /sbin/dump -0au -f /disk2/backup/usr_$datum.dmp /usr || /usr/bin/mail -s Backup-Fehler your@isp.com
I see a risk here, in case dump fails: you're left with nothing.
Wouldn't it be better to do it in this order:
/sbin/dump -0au -f /disk2/safe_backup/usr_$datum.dmp /usr
<etc. etc.>
if [ <successful> ]; then
rm -rf /disk2/backup
mv /disk2/safe_backup /disk2/backup
else
<send error message>
fi
If the dump fails, you also get the error message, but now
the previous dump backup is still there!
Rob.
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