Disk partitions and LVM limits

[Jonathan Klay]

I found this a bit difficult, but look at Redhat knowledge base article 
11461.  Seems you have to guess at the max size, as it doesn't tell you 
what it is (it will be something less than 5.4TB!), so I created and 
removed as I zeroed in on it best I could.

Peter Blajev wrote:

> Date: Fri, 8 Feb 2008 11:01:21 -0800
> From: Peter Blajev <pblajev at ucsd.edu>
> Subject: Disk partitions and LVM limits
> To: redhat-sysadmin-list at redhat.com
> Message-ID: <200802081101.21774.pblajev at ucsd.edu>
> Content-Type: text/plain;  charset="us-ascii"
>
> Hi,
>
> I've got a DAS DELL MD1000 with a bunch of SATA drives in RAID 5 configuration 
> with total space of 5.4TB. This box is attached to a CentOS5 system (kernel 
> 2.6.18-53.1.6.el5).
>
> Any idea how to make this space usable?
> Is there a limit how big a partition can be? What is the work around?
> Is there a limit how big a file system ca be?
>
> I've tried to partition it but no matter how bug partition I create fdisk 
> spits out these messages on the console:
> ---
> sdb: very big device. try to use READ CAPACITY(16).
> SCSI device sdb: 10248519680 512-byte hdwr sectors (5247242 MB)
> sdb: Write Protect is off
> ---
>
> I decided to not partition the drive and use LVM but the physical volume 
> stopped at 2TB.
>
> So, right now I can't use LVM because of this 2TB limit and I'm not sure if I 
> partition the drive how good these partitions are because of the the message 
> from fdisk.
>
> Any help or idea is highly appreciated.
>
> Thank you
> Peter
>
>
>
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-- 

Jonathan Klay     <+>    
System Administrator