Clint Byrum wrote:
On Thu, 2004-02-19 at 07:48, Marc Perkel wrote:The reason I don't user Raid 1 is that more often than not I'm fixing things for a bad install or accidental deletion. My second drive is my UNDO drive. If I screw up using raid - i screw up both drives.
Dick - that doesn't answer the man's question.
Its a valid question though (asking why not use RAID1 I mean). If we knew that, we could better serve his rsync question. Or he might not have realized that for things like this, RAID1 might be better. It just depends on his goals.
For instance, if you're using removable IDE disks and rotating them periodically... RAID1 will not be good, because you'll have to re-sync the whole RAID1 every time.
Then again, in situations like those.. something like drbd(distributed redundant block device) comes to mind. Google for drbd... network RAID1 done right basically.
Actually - doesn't the -x mean to not cross file systems and makes it not backup the backup directory?mount the other drive say as "/backup"
rsync -ax --delete --force / /backup/
Almost.. you made the same mistake I made a few months ago when doing this.
rsync -ax --delete --force --exclude /backup / /backup/
Otherwise.. every time you do this, you end up copying your backup to /backup twice. ;)
I think that will do it.
You might want to run a list of rsync commands on a list of directories if you are coppying a lot of files. I do the same thing where I back up critical files with one script hourly - other user files nughtly - and the system stuff manually after installing new software. I like doing it this way rather than raid 1 becaue if I screw up I can use rsync to undo it.
Right, thats why RAID1 is for redundancy, and rsync is for backups. ;)
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