help creating new gmirror > 2TB

[JD]

Sorry to digress a little, but I have
a 6TB drive, single MBR partition on a linux machine.
I would be surprised if FreeBSD could not support my drive:

fdisk -l /dev/sde

Disk /dev/sde: 5.5 TiB, 6001140957184 bytes, 1465122304 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x3d0278e3

Device    Boot Start        End     Blocks  Id System
/dev/sde1        256 1465122303 1565520896  83 Linux


On 08/29/2017 02:12 PM, William Dudley wrote:
> Hi,
>
> I want to create a simple mirror > 2TB on a FreeBSD 10.3 system.
>
> I have 2 identical 4TB disks.
>
> The examples in freebsd handbook "geom-mirror" pages show creation of a 2TB
> mirror using
> MBR partitioning, and that has an upper limit of 2TB.
>
> Some documentation says not to use GPT partitioning with gmirror because
> both store their information in the last sector on the disk.
>
> I'm not expert enough to be able to solve this myself.
>
> How do I create a gmirror of 4TB size?
>
> I want to partition it into 4 slices after I create it, but think I can use
> gpart to do that.
>
> Note: I'm not interested in using zfs unless there's no way to do this with
> gmirror.
> I read too many zfs failure stories on this mailing list to be comfortable
> with zfs.
>
> Thanks in advance,
> Bill Dudley
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