Max usable disk space

[John Summerfied]

Mark Haney wrote:
> Jason Ragsdale wrote:
> 
>> I wonder if that would affect me as i am planning on doing 1 raid  
>> device at first, (the 4 300GB's) and making a LVM out of it. Then  
>> adding another device later with the 4 500's and adding in the new 
>> LVM  drives into the current group. So i would have >2tb but it would 
>> be  spread across 2 raid devices and 8 disks.
>> -jason
> 
> 
> 
> The array I'm building is 7.5TB across 15 500GB SATA2 drives.  In 
> communication with the vendor over this, I found out that little tidbit 
> about fdisk.  So, I'm going to have to do the same thing with LVM 
> groups.  I understand there might be a performance hit on this, but I 
> won't know until I get it built and tested.  Does anyone know the deal 
> with FDISK?  Are there plans to fix that little problem?  I mean pretty 
> soon 2TB is gonna be a drop in the bucket for most filesystems, and 
> considering ext3 handles 64TB or more, this seems a horrible limitation.

You reall need to read up on parted, it has some very nice features 
(though I find it a little clumsy at the commandline). I copied an 80 Gm 
HDD to a file and set to, manipulating the partitions in parted. It 
failed when I tried to move an extended partition, but it's come a long 
way since last I looked. Andrew is to be commended.

I think there are a couple of GUI wrappers for it too.


-- 

Cheers
John

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