Hello!

so I recently had the same problem. The solution is on 64bit systems
very easy.

fdisk only support 2tb partion tables. you have to utilize
the program "parted" which allows you to create an
"gpt" label (label is the name for the partition table). and then
you can define partions with more than 2tb. 

another way is to use the whole disk as one filesystem, without
any partition tables

hope it helped!

sven


On Wed, 2005-08-17 at 17:00 +0200, Jorge Izquierdo (UAM) wrote:
> Hi everybody, I'm new in the list so I apologize if the mail is not so
> clear as it should be.
> 
> I'm having some troubles with SL4.0 trying to configure a filesystems of
> 5TB in my SCSI storage (Promise vtrack 15110).
> When the system starts, the output messages shows that my SCSI device is
> correctly detected and the information about the size of the RAID
> storage created is right:
> 
>  scsi0 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 1.3.11
>         <Adaptec 39320A Ultra320 SCSI adapter>
>         aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz,
> 512 SCBs
> 
> (scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, 16bit)
>   Vendor: Promise   Model: 14 Disk RAID5     Rev: V0.0
>   Type:   Direct-Access                      ANSI SCSI revision: 04
> scsi0:A:0:0: Tagged Queuing enabled.  Depth 4
> SCSI device sda: 2532706176 2048-byte hdwr sectors (5186982 MB)
> SCSI device sda: drive cache: write through
>  sda: sda1 sda2
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
> 
> (as you can see, I'm using the Adaptec 39320A HBA with the driver
> aic79xx included with SL)
> 
> But the problems come when I try to configure my storage with fdisk and
> then I try to create the ext3 filesystem with mke2fs. First of all,
> fdisk doesn't allow me to create a unique partition with the full
> capacity of my disk array, but when I select a partition size larger
> than 4TB it doesn't work properly. Is this normal? It seems the 64 bits
> support is not reflected at the time of partition creation.
> 
> So I decided to create 2 partitions (sda1 and sda2 as reflected in the
> dmesg text) one of 4 TB and the other one with the rest. And here comes
> the second problem, I create a ext3 FS on the sda partition with: mke2fs
> -j -m 0 -b 4096 /dev/sda1
> And when I mount my new filesystem and I test the mounted filesystems I
> get the next information:
> $# mount /dev/sda1 /mnt
> $# df -h /mnt
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/sda1             2.0T  103M  2.0T   1% /mnt
> 
> So the size of my partition is only 2TB when I created a 4TB partition
> with fdisk. Any ideas about this behaviour? Should I create my
> filesystem in any other way to support larger than 2TB sizes? Is the 64
> bits support broken anywhere with SL 4.0? Am I missing something?
> 
> Thanks for any help or any suggestion
> 
> Jorge
> 
>