[CentOS] FW: FDISK Help please in Centos 4.3

Nicholas Anderson nicholas at fiocruz.br
Fri Aug 18 13:06:56 UTC 2006


Rajeev R Veedu wrote:
>
> Hi,
>
> Is it possible to create one raid volume of 3.3 TB (9550SX-8lp X 
> WD5000YS – 8nos) and create a file system with ext3? (CentOs4.3 64bit)
>
> The maximum I am getting is 1.24tb and fdisk returns no more space 
> available. But when I say fdisk /dev/sda it list full size of 3.3 TB. 
> But I can not create partitions more than 1.24TB.
>
> Any idea?
>

you should try creating an LVM instead of creating a partition ....
with LVM you dont need to create a partition ... you can use the whole 
device ....

from lvm2 faq:
> *4.1.13. * What is the maximum size of a single LV?
>
> * * The answer to this question depends upon the CPU architecture of 
> your computer and the kernel you are a running:
>
>    *
>
>       For 2.4 based kernels, the maximum LV size is 2TB. For some
>       older kernels, however, the limit was 1TB due to signedness
>       problems in the block layer. Red Hat Enterprise Linux 3 Update 5
>       has fixes to allow the full 2TB LVs. Consult your distribution
>       for more information in this regard.
>
>    *
>
>       For 32-bit CPUs on 2.6 kernels, the maximum LV size is 16TB.
>
>    *
>
>       For 64-bit CPUs on 2.6 kernels, the maximum LV size is 8EB.
>       (Yes, that is a very large number.)
>
cheers,

Nick




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