Re: XFS and 3.2TB Partition

[Evan Fraser <evan@dneg.com>]

I had that problem when I was using an adaptec aic79xx adapter, using a 
new LSI-Logic one fixed the problem for me.  Could it be a limit with 
your controller/controller driver?

Chris Hane wrote:
>
> I am trying to create a 3.2TB partition on my Raid 5.  Is there a 
> document that could help?
>
> I have a 3ware 9500 controller and 8 *500GB sata drives configured 
> into a single RAID 5 array.
>
> I am running linux 2.6.16 with the 3ware drivers compiled into the 
> kernel.
>
> I've tried a couple of different means to create the partition and 
> format the file system with xfs without success (or confidence that I 
> haven't done something wrong).
>
> 1. FDISK
>
> I've tried fdisk on the array to create the partition; but it forces 
> me enter the number of cylinders before letting me create the 
> partition.  I enter the largest number of cylinders since I'm not sure 
> how to calculate the correct cylinder number across an 8 disk RAID 5 
> array.
>
> I then create the partition starting at 0 (or whatever the default 
> was) and ending at 3500GB.
>
> Once the partition is created this way, I can mkfs.xfs; but I'm a 
> little hesitant to use this since I input and arbitrary cylinder number.
>
> Thoughts on what to use for the correct cylinder count with fdisk?
>
> 2. PARTED
>
> I've tried to use parted without any success.  Here is what I've tried 
> and the errors I get.
>
> > parted
> parted> mklabel gpt
> parted> mkpart primary 0 3500GB
> parted> quit
>
> ok  - the partition now exists.  If I use ext2 everything works ok.
>
> however, when I run
>
> > mkfs.xfs /dev/sda1
>
> the file system is formated but is truncated to to 2TB.
>
>
> Any advice/pointers on how to partition and format a 3.2TB raid 5 
> array would be much appreciated.
>
> Thanks,
> Chris....
>
>
>

-- 
evan@dneg.com
Linux Systems Administrator
Double Negative
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