Re: [CentOS] backup server..

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



On 14/09/06, Sebastien Tremblay <sebastien.tremblay@xxxxxxxxxxxxxxxx>
I know there is none at the moment which
is why I was looking into dd and tar. I've read that dd physically
read/write every blocks of the disk whereas tar handles `zero-files`
differently... Thus my question!

I suspect dd-ing from an active disk isn't necessarily the best of
ideas. You can:

# dd if=/dev/sda of=/dev/sdb

... one identical disk to another, or at least to another with the
same geometry. If both disks are unmounted you'll get a consistent
snap-shot of the system.

Doing similar with an active, mounted /dev/sda on a running system
wouldn't guarantee the consitancy of the "backup". I think you'd be
better partitioning up your disks similarly and tar-ing, though you
mention 'zero-files', do you mean sparse files? In which case special
measure may be required for those?

Will.
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos

[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]
  Powered by Linux