Re: Numerical owners

Wiebe Cazemier wrote:
> On 03/27/06 22:21, Denis Corbin wrote:
> 
> 
>>of course, the restoration from a live CD is probably more frequent,
>>but if you restore a whole system using a live CD to a brand new hard
>>disk, you will keep having something coherent. For example instead of
>>having user "bin" mapped to uid 1 you could have it mapped to uid 2,
>>while all the system stays coherent, performing a name to uid mapping
>>is not a problem, your restored system would work identically with uid
>>2 for bin in place of uid 1.
> 
> 
> Well, not exactly, because once you will boot your restored system, it
> will see UID 2 as user daemon (for example), so all the files that
> previously belonged to bin, now belong to daemon.

yes, again, you are right ... :-)

> 
> But I think we can all agree that name to UID mapping is something to
> avoid, but could perhaps, sometime, be implemented _as an option_, but
> not as default.

we do.

> 
> I wonder BTW, what is the design philosophy of tar? It can only be used
> for system backups and restoration if you are very carefull with the
> permission and ID's options. I once destroyed a system because of
> forgetting an option like this. Is there no official GNU tool that is
> actually _meant_ for system backup and restoration, instead of some
> program which has it as an option?
> 
> I'm very glad dar exists, but it's kind of stupid that one has to be so
> careful when using standard GNU tools. If you ask me, dar should be
> installed on all Linux distros by default, and should gain populairity,
> to the point where it becomes an "official" program. It's just so well
> conceived, and designed towards system backup. Things like the the
> --first-slice option, the ability to run commands on every slice, like
> par2, and the existence of the dar_static binary show that you actually
> use the program yourself,

Yes, that's right, :-)

  which I often doubt of a lot of programs,
> since they are so obviously flawed or limited. Anyway, thanks, and keep
> up the great work :)


Thanks!

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