[CentOS] Re: Disk partitions and LVM limits - SUMMARY

[Peter Kjellstrom]

On Wednesday 13 February 2008, Peter Blajev wrote:
...
>   - fdisk creates partitions up to 2.1TB in size. Use "parted" instead.

The difference is not fdisk vs. parted. It's MSDOS-MBR vs. GPT (different 
types of partition tables). But since fdisk doesn't support GPT you'll have 
to use parted. Note though, parted fails equally bad if you use it with 
MSDOS-MBR...

...
> Your options are:
>   - If the storage is connected to a RAID controller you can use the
> controller to create smaller logical partitions. Then combine them with
> LVM.

While this is possible it often causes performance problems (because linux now 
schedues IO independently on two devices which happen to be the same 
raid-set...).

...
>     If you don't like parted you can still use fdisk to create a few 2TB
> partitions and then use LVM.

I don't think that'll work, you can only have a MSDOS-MBR on a device smaller 
than 2T, it does not matter if your individual partitions are <2T.

/Peter K
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