Thanks for the reply Les. Unfortunately setting up a "new backuppc"
and leaving the old is not an option in our case. Here is our
situation:

When we initially ordered this server we ordered it with 32GB ram,
dual quad-core xeon's, and 8x 2TB drives. We had to pass it off as a
"backup server" to get the funding through. So as soon as we got it, I
setup Xen on the physical host and then got to carving out LV's for
virtual machines. One of which was the 6TB for the backuppc store. Now
here we are a few years later and we are wanting to remove the disks
from this host and swap them with another physical server that has 8x
750GB drives. This is so that we can move the backuppc server onto the
physical host and to a different building away from the hosts it is
backing up. So I have to move everything off this physical host,
including the 6TB backuppc data store. I am trying to move everything
I can to the SAN. However my problem with moving stuff is compounded
by the version of CentOS we are running having issues with the hosts
iscsi offload driver. So to get all the other servers off this host we
are recreating them on a separate host and manually rsync'ing the
configs and such over to the new hosts. This still leaves the backuppc
data. I don't have a problem doing the rsync way if it is the only
reasonable option. However I wanted to run it by you guys to make sure
I wasn't missing something obvious.

On Fri, Jun 22, 2012 at 1:14 PM, Les Mikesell <lesmikesell AT gmail DOT com> 
wrote:
> On Fri, Jun 22, 2012 at 12:52 PM, Kameleon <kameleon25 AT gmail DOT com> 
> wrote:
>> I forgot to explain that the current VM has a 6TB logical volume. I
>> would like to move that data to our iSCSI SAN which I have carved out
>> a 8TB logical volume on. The problem comes when I try to migrate the
>> lv via dd or other means as the host system takes a dump. Does it
>> sound like the only option is the "rsync -vrlptgoDH" command? That is
>> what I used to get the data from the original machine to the vm.
>
> I don't think there is really a good answer to this problem.  You
> might ask on the LVM  list if you could reasonably expect to attach
> the iscsi volume as a new physical volume and pmove to it.   I don't
> have any experience with that.  Dd should work if you have unmounted
> everything so it doesn't change during the copy - if that fails I'd be
> concerned about the robustness of the iscsi connection.    Partclone
> might be able to do it without copying the unused space but I don't
> know how it relates to lvm (but I think clonezilla uses it somehow).
>
> Rsync with the -H option or other file-oriented copying approaches
> will take an extremely long time to reconstruct the hardlinks and has
> to copy the entire tree in one run to get it right.   Using rsync on
> the pool or cpool dir, then the BackupPC_tarPCCopy tool for the pc
> directory is supposed to be faster, but it will still take a long time
> and the system has to be down for the rsync and tarPCCopy runs to
> complete.
>
> I've usually just kept the old system around for emergency restores
> while the new replacement collected its own history.
>
> --
>   Les Mikesell
>      lesmikesell AT gmail DOT com
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> BackupPC-users mailing list
> BackupPC-users AT lists.sourceforge DOT net
> List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
> Wiki:    http://backuppc.wiki.sourceforge.net
> Project: http://backuppc.sourceforge.net/

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/