Re: Converting system to raid

[Robin Hill <robin@robinhill.me.uk>]

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On Fri Apr 10, 2009 at 12:22:44PM -0700, Timothy D. Lenz wrote:

> How can cp not work? every guide I found used ether cp or rsync. Even
> guides on seting up an auto backup system use cp or rsync.
> Seems the only files/folders that shouldn't get copied are the block
> device ones that are created at boot and are not really on the drive.
> 
They'll all get copied, but you won't necessarily get the correct
contents.  Because the system is in use:
 - files will be being written, so you'll either get a partial copy, or
   an old version.
 - files may be locked, so you won't be able to copy them.

Doing a backup of a running system using cp/rsync will work fine for a
lot of things (especially for config files, documents, etc) but will
almost certainly fail miserably for some (databases for example).

HTH,
    Robin
-- 
     ___        
    ( ' }     |       Robin Hill        <robin@robinhill.me.uk> |
   / / )      | Little Jim says ....                            |
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