[CentOS] Large disk support
chrism at imntv.com
chrism at imntv.com
Tue Nov 28 21:07:12 UTC 2006
Kevan Benson wrote:
> I have a 3.5 TB RAID 5 Array through a 3ware 9590SE 8 port card, and am
> running into what seems like quite a lot of problems trying to get the system
> installed correctly. The system is a running dual Opterons with 2 GB of RAM,
> and I'm attempting to install through the x86_64 ServerCD.
>
> First, grub refuses to install on the disk, as it's too large. I can get
> around this though by booting Fedora Core 6 in rescue mode and running grub,
> as it can deal with the disk size correctly. This might only be working when
> I attempt installs that don't utilize as much of the array as possible though
> (100 MB /boot, 2GB swap, 10Gb /, the rest left unallocated).
>
> Secondly, there seems to be a problem using msdos disk labels with large
> partitions, and I can't seem to find any solutions to this in the manuals or
> on the net. GPT labels are offered as a solution to this but only for
> Itanium systems.
>
> Am I missing some obvious solution to this? Are there some best practices for
> dealing with large disks anyone can share that may save me problems now or
> later? I'm open to suggestions, as all I've encountered so far are problems.
>
>
On two different systems with hardware similar to yours, I ended up
using 2 different solutions. :) On one, I simply replaced 2 of the
750gig 'cudas in an 8 disk array with 160gig drives and then created a
RAID1 on those 2 drives for the OS. After the OS was installed, I then
used parted to create the gpt label on the large array and created the
filesystem on it.
On another system, I really needed the ports on the 3ware for the array
so I installed a pair of 160gig drives using a cheapo dual port SATA
card and used software RAID 1 on those two drives for the OS install.
After the system was installed, I then used parted to create the GPT
label on the large array and created the filesystem on it.
If you go back through the list archives a bit, you'll see a bunch of
very useful information from a couple of months ago where a number of
people offered excellent tuning suggestions. If you get stuck, shoot me
some email off list and I'll see if I can give you a hand.
Cheers,
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