[GTALUG] What Not To Backup

William Park opengeometry at yahoo.ca
Fri Dec 23 15:56:55 EST 2016


On Fri, Dec 23, 2016 at 02:32:17PM -0500, Alvin Starr via talk wrote:
> On 12/23/2016 02:21 PM, William Park via talk wrote:
> > My recommendations...
> > 
> > 1.  Backup entire disk to another disk, verbatim.  That is,
> > 	dd if=/dev/sdX of=/dev/sdY bs=10M
> > 
> >      First, you don't have to waste time figuring out what to back up.
> >      Second, if disk fails, you can just swap the disks, and copy over
> >      only the new files since last dd.
> Generally this is a bad idea if your copying a live file system because you
> end up with a disk image that is corrupted to some extent.

Yes.  I do 
    telinit 1
    mount -o remount,ro /
before running 'dd'.
-- 
William


More information about the talk mailing list