To dd or to rsync, that's the question...

[Tony Nelson]

On 09-12-01 13:01:47, Dan Thurman wrote:
> 
> Which is the preferred "backup" solution?
 ...
> I am trying to get data off of disk1 which is failing (via smartd) 
> and wish to use the correct backup and restore method getting the 
> data off of disk1 onto disk2 without "integrity loss", whatever that 
> means.

You don't seem to be doing a backup, but rather making a copy of an 
existing drive.  You should probably do that and then also make a 
backup some other way.

To copy a disk, I always use dd and then expand the last partition as 
needed (it's usually LVM2, so I then expand some of the LVs).  The disk 
I usually do this to has WinXP (and Win98) as well as Linux /boot and 
LVM2 partitions.


> In the case of dd, it falls flat, if there are sector errors and this
> would not work, as in my case - so backup programs that do byte copy 
> would perhaps also fail. 
 ...

ddrescue

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