Le Thursday 02 March 2006 19:19, Ken Long a écrit :
> I've been trying to search through this list and through google to
> figure out the answer to this question, but have not found a good answer
> yet.
>
We are using USB2 Disks for offsite storage with xfscopy.
Our BackupPC data is stored on a 1.6TB RAID5 disk bay on an XFS filesystem.
The actual physical used space is about 300GB.
To backup the thing, we are doing an xfscopy into a file on the mounted USB2
drive (which is 400GB). (it takes 4 to 9Hours to complete the 300GB copy)
xfscopy is an intelligent dd that only copies used blocks. The resulting file
is an image file that can be mounted.
In case of catastrophic disaster:
we take a PC
install our distro (Mandriva 2006.0)
install our backuppc-2.1.2pl1 RPM
mount the USB drive in /mnt/disk
mount -o loop /mnt/disk/backuppc_data.img /data
recover httpd config from the disk and recreate /var/lib/backuppc links
to /data/....
start backuppc daemon
and it works realy well.
Problem: we are limited to 400GB of physical data.
If we need more, then we will have to xfscopy to a tape and in that case, we
will have to recover the copy to a image file or a partition in case of
disaster.
Olivier.
--
Olivier LAHAYE
Motorola Labs IT Manager
Computer & Information Systems
European Communications Research
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