[kwlug-disc] Presentation: replacing a laptop's hard disk

[B.S.]

> Also, cpio -a resets

He said cp, not cpio.

Rsync only does checksums when run as a daemon. e.g. rsync /fromhere tothere::/dest <- note the double colon, meaning daemon mode.

Else it's a local copy and checksumming is not done. e.g. Mount a samba share and rsync /fromhere /mnt/tothere/dest/dir

IIRC, rsync /fromhere tothere:/dest would be an NFS destination, so also not checksummed. (There has to be something running on the other end to calculate the received checksum.)

mondoarchive, however, accomplishes all that you say in your message. Including the generation of a boot cd. For what it's worth.

Also, arguably, btrfs takes you to the same place (self-checksumming), throwing an error if there is one. Giving you a chance to repair the single file issue (as you also accomplish), but in place.

Not arguing with you, I get you were presenting your experiences and your particular (eventually) successful resolution to the problem at hand / in front of you you were trying to solve at the time.



----- Original Message -----
> From: Khalid Baheyeldin <kb at 2bits.com>
> To: KWLUG discussion <kwlug-disc at kwlug.org>
> Cc: 
> Sent: Wednesday, September 16, 2015 1:36 PM
> Subject: Re: [kwlug-disc] Presentation: replacing a laptop's hard disk
> 
> Several reasons:
> 
> cpio will copy all special files, and the -0 (together with find
> -print0) will handle all files with weird characters in their names
> (even a newline).
> 
> Also, cpio -a resets the access time of the files back to what it is,
> so the files are not considered any fresher than they actually are.
> 
> I am told that rsync is also another way of doing the same, and has
> checksums per file (Lori can chime in on this).
> 
> On Wed, Sep 16, 2015 at 1:20 PM, Hubert Chathi <hubert at uhoreg.ca> wrote:
>>  On Mon, 14 Sep 2015 23:19:41 -0400, Khalid Baheyeldin <kb at 2bits.com> 
> said:
>> 
>>>  Those who want more information on my presentation tonight, you can
>>>  get the PDF from here:
>> 
>>> 
> http://baheyeldin.com/articles/linux/presentation-replacing-laptop-disk-linux.html
>> 
>>  I missed the presentation so you may have addressed this, but why are
>>  you using cpio instead of just cp -a?
>> 
>> 
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> 
> 
> 
> -- 
> Khalid M. Baheyeldin
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