formatting a 12.73 Tb disk on ROCKS 5.2

Doll, Margaret Ann margaret_doll at brown.edu
Thu May 9 15:47:58 UTC 2013


I was going to use parted and create a partition, but I don't know what to
use for the end point.

Model: AMCC 9650SE-16M DISK (scsi)
Disk /dev/sda: 14.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt


On Thu, May 9, 2013 at 11:44 AM, <m.roth at 5-cent.us> wrote:

> Doll, Margaret Ann wrote:
> > I used the BIOS setting to create the raid system.  I couldn't format it,
> > so I ran fdisk, deleted the partition and created a new partition.  The
> > new partition with fdisk was approximately the same size as the original
> > partition created by the BIOS.
>
> Ok, I don't know what you mean by the BIOS setting - on what? Is this
> attached to a server, or is this an "appliance"? If the former, do you
> mean the firmware for an HBA?
>
> At any rate, you *cannot* use fdisk to do anything with this. There are
> hard-coded limits with fdisk - you *must* use either parted (which is user
> surly, if not outright hostile) or gparted (the GUI version, which is,
> well, ok). And you must specify that the partition table - there is no MBR
> as we know it, for something this big - must be GPT, not MBR.
>
>       mark
> >
> > On Thu, May 9, 2013 at 11:19 AM, <m.roth at 5-cent.us> wrote:
> >
> >> Doll, Margaret Ann wrote:
> >> > I have a raid-5, /dev/sda on a NAS node that has 12.73 Tb of space.
> >> >
> >> > mkfs xfs /dev/sda1
> >> > mke2fs 1.39 (29-May-2006)
> >> > mkfs.ext2: invalid blocks count - /dev/sda1
> >> >
> >>
> >> Question 1: Margaret - did you use parted or gparted, or fdisk, or some
> >> NAS utility to create the logical partition? If anything other than an
> >> HBA
> >> controller, you've cannot use fdisk, which cannot deal with anything
> >> larger than 2TB.
> >>
> >>         mark
> >>
> >> > I can use
> >> >
> >> > mkfs.ext3 /dev/sda1 works, but it only formats the first 2Tb of space.
> >> >
> >> > filesystem            Size  Used Avail Use% Mounted on
> >> > /dev/sdb1              19G  2.8G   16G  16% /
> >> > /dev/sdb5             875G  200M  830G   1% /state/partition
> >> > /dev/sdb2             4.8G  184M  4.4G   5% /var
> >> > tmpfs                 3.9G     0  3.9G   0% /dev/shm
> >> > /dev/sda1             2.0T  199M  1.9T   1% /bigdisk1
> >> >
> >> > How do I get the complete raid system formatted?
> >> >
> >> > Thanks
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