Re: cloning to multiple drives with the "dd" command.

[Pádraig Brady]

On 18/02/15 14:02, didier chavaroche wrote:
> Hello.
> 
>  
> 
> For a project of mine I need to clone one source drive to 23 target drives.
> For this I am using the "dd" command that I execute 23 times.
> 
> But it doesn't work, then I noticed doing it on 12 targets at once work fine.
> 
> So I decided to split my cloning process into cloning first 12 targetss then 
> clone the remaining 11 targets after.

The two statements above seems to conflict?

> But it doesn't work either, I don't know nor understand why it doesn't work?
> Or if you have a technique so I can make my 23 drives at once.

What failure do you see?
Separate processes reading a single file and writing to separate devices,
while somewhat inefficient, should work. If not it suggests a system issue,
rather than one with dd.

You might also want to try something higher level like:
https://wiki.gnome.org/Apps/MultiWriter

cheers,
Pádraig