backup system rsync <-> dump

[Jerry McAllister]

> 
> I have two disks; one is the fbsd system drive, the other is for backup
> purposes.
> 
> I'm in doubt about what to use: dump or rsync

I use dump/restore, but do the command slightly differently.
Since dump works on a file system I cd to the destination mount point
and work from there and I don't have to put the cd in the middle.

  cd /backup/root
  dump -0aLf - / | restore -rf -

works fine.
You don't have to newfs each time, but you do need to do
something to clean out the destination file system
so I guess newfs works as well as rm -rf.

////jerry

> 
> I guess I can do something like:
> mount /dev/ad1s3a /backup/root
> mount /dev/ad1s3d /backup/var
> mount /dev/ad1s3f /backup/usr
> /usr/local/bin/rsync -avHxS --delete /usr /backup/usr
> for /usr / and var
> 
> OR
> 
> #!/bin/sh
> newfs /dev/ad0s3a
> newfs /dev/ad0s3d
> newfs /dev/ad0s3f
> mount /dev/ad0s3a /backup/root
> mount /dev/ad0s3d /backup/var
> mount /dev/ad0s3f /backup/usr
> (/sbin/dump -L -0f - /)|(cd /backup/root ; /sbin/restore -rf -)
> (/sbin/dump -L -0f - /var)|(cd /backup/var ; /sbin/restore -rf -)
> (/sbin/dump -L -0f - /usr)|(cd /backup/usr ; /sbin/restore -rf -)
> umount /backup/root
> umount /backup/var
> umount /backup/usr
> tunefs -n enable /dev/ad0s3d
> tunefs -n enable /dev/ad0s3f
> 
> This gives me a perfect copy, BUT there is a risk if something goes
> wrong when I have newfs'd the backup drive.
> 
> Any advice?
> 
> -- 
> dick -- http://nagual.st/ -- PGP/GnuPG key: F86289CE
> ++ Running FreeBSD 6.1 ++ The Power to Serve
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