At Tue, 23 Feb 2010 17:45:34 +0200 CentOS mailing list <centos@centos.org> 
wrote:

> 
> 2010/2/23 Khusro Jaleel <mailing-li...@kerneljack.com>:
> > Hello, sorry for the long email, it's a little hard to explain this issue. 
> > The gist of it is that the Ubuntu version of parted allowed me to do 
> > something which perhaps should not be allowed i.e. creating partitions on a 
> > 2.7TB drive when the partition table is not *gpt* but *msdos*.
> >
> > I am trying to configure 2 identical servers, both are Dell Poweredge 2970 
> > machines with 6 disks in them configured as a RAID 5 with one hotspare, and 
> > both give me 2.726TB of space after the RAID 5 is configured. There are 
> > slight differences between the BIOS versions and Firmware versions of the 
> > LSI disk controller, etc but I'm not sure that matters in this case.
> >
> > Now, I setup server "A" a few months ago and for some reason that I don't 
> > remember now I resorted to using a Ubuntu 64-bit LiveCD to create the 
> > partitions. Since the disk is larger than 2TB, I had to use 'parted' to 
> > create the partitions. So I happily created the partitions I wanted which 
> > are below:
> 
> I think it is not possible to create partitions lager than 1.7TB
> without gpt partition table.
> 
> Of course you can create small boot partition and some lvm partitions
> and combine them to one big lvm volume or use another drive for
> booting and use gpt partition table for big disk..

Random odd thought.  It sounds like you are using a hardware RAID
controller (LSI)?  I know that the old Mylex RAID controllers would
allow you to create multiple *logical* disks on top of a RAID set.  Can
you do this with the LSI RAID controller?  If so, what I would do is
create two logical disks, one 'small' (say 20gig or so) and one large
(whatever is left).  Then, install CentOS on the 20gig logical disk,
using a MS-DOS partition table as CentOS wants to do (I'd do four
partitions: /boot swap / and /home).  *Don't* even try to partition the
big disk.  Just make it an LVM PV and then create a VG with this
physical volume.  Carve out logical volumes as needed.

> 
> --
> Eero
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