[CentOS] Mirroring Hard Drive
Les Mikesell
lesmikesell at gmail.com
Mon Dec 8 01:12:13 UTC 2008
William L. Maltby wrote:
> On Sun, 2008-12-07 at 16:04 -0600, Les Mikesell wrote:
>> William L. Maltby wrote:
>>> <snip>
>
>>> Am I missing something? Just old fashioned? Cpio has all the params you
>>> want and can be _very_ fast with the righ parameters. Similar to the
>>> above dump/restore set I've seen many use tar/untar equivalents.
>> Or, on everything that has gnu cp (which would be at least every linux
>> distro), 'cp -a . /mnt' should work. However, I usually use rsync
>> since you can stop and restart keeping the completed work or repeat to
>> get updates, and it works the same over ssh if the drive in question is
>> on a different machine.
>
> Yep. I've recently began using rsync for several types of "local" copy,
> usually back-up related. I can't recall if the "cp -a" detects and
> handles hard-links to minimize space requirements though. I know cpio
> can/does. I guess I'll have to read up on cp some more and see if it
> leaves the access times alone (cpio parameter allows retaining that) and
> handles hard-links efficiently.
Rsync -a covers most options except hardlinks - you need to add -H for
that because it adds significant overhead to track them.
--
Les Mikesell
lesmikesell at gmail.com
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