BackupPC-users

Re: [BackupPC-users] How to move to a new remove server?

2012-04-07 20:34:53
Subject: Re: [BackupPC-users] How to move to a new remove server?
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Sat, 7 Apr 2012 19:33:50 -0500
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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