> Rsync needs the -H option to recreate the hardlinks.  There are some
> practical limits to the size of a pool that can be copied in a
> reasonable amount of time because identifying and recreating the
> hardlinks is somewhat inefficient - and you have to include the entire
> tree in one pass for it to work.

I found this as well (even though most instructions give the archive mode
(-a) without the hard-link switch).


What about the requirements of the two directory structures:
__topdir__/data/pc & __topdir__/data/cpool

If I only copy the "pc" directory to another server, I noticed that my new
installation of BackupPC apparently reads it just fine and displays the
previous full and incrementals that we've collected over the years. The
backuppc service seems to look for existence and ownership of "cpool", but
does not complain that it is empty (which it is in my test environment). 

Do we really need the cpool directory? Will backuppc rebuild this in some
way?


// Clint Alexander


> -----Original Message-----
> From: Les Mikesell [mailto:lesmikesell AT gmail DOT com]
> Sent: Saturday, April 07, 2012 8:34 PM
> To: General list for user discussion, questions and support
> Subject: Re: [BackupPC-users] How to move to a new remove server?
> 
> On Sat, Apr 7, 2012 at 6:31 PM, Alexander, Clint Mr ARMY GUEST USA USAMC
> USA <clint.alexander AT us.army DOT mil> wrote:
> >
> > I have 2 servers at a hosting company; an old one having a long and
> > large pool of BackupPC data on it. The new one is replacing the old
> one.
> >
> >
> >
> > The hard drive cannot be removed from the old server and added to the
> > new one. It simply  needs to be copied from one location to the other
> > via the internal GB network (no backup tapes or CD's or anything else,
> > strictly network copy only).
> >
> > My question is, How?
> >
> > I have used Rsync with archive and preserve hard link mode but I still
> > get duplicate files and run out of space on the new server, when the
> > new server has more space available than the old.
> 
> Rsync needs the -H option to recreate the hardlinks.  There are some
> practical limits to the size of a pool that can be copied in a
> reasonable amount of time because identifying and recreating the
> hardlinks is somewhat inefficient - and you have to include the entire
> tree in one pass for it to work.
> 
> > I've also mounted the new location on
> > the old server and followed the instructions to use the
> > BackupPC_tarPCCopy but this does not preserve hardlinks across hard
> drives either.
> 
> You can't make hardlinks across drives.  You have to have everything on
> one filesystem.
> 
> > How do I (we) correctly copy the entire pool (and any other important
> > information) to a new server?
> 
> I've always found it easier to just stop making new backups on the old
> server but keep it around until the new one has accumulated the history
> you need.
> 
> --
>     Les Mikesell
>       lesmikesell AT gmail DOT com
> 
> ------------------------------------------------------------------------
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------------------------------------------------------------------------------
For Developers, A Lot Can Happen In A Second.
Boundary is the first to Know...and Tell You.
Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
http://p.sf.net/sfu/Boundary-d2dvs2
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