Anup Shukla wrote:
Peter Kjellstrom wrote:
On Tuesday 23 October 2007, Anup Shukla wrote: ...
I think its finally got into my head now. :)
From what i understand (after your replies and some more googling) GRUB cannot boot from gpt labeled drives. So no matter how i partition them, it just wont boot.
Correct.
So finally, i am putting a 300G SATA to act as the "system" drive. Then use the other 750G's to be the big RAID 5 Volume (XFS)
Yes, thought about it. But DELL PERC does not seem to be able to do that. That is atleast what i have found out till now. Wish it was possible.
Just in case, if anyone knows better, please let me know. I have a Dell PE2950
Which Dell PERC they make dozens under that name?
If it is the PERC 5e then yes you can create multiple LUNs out of an array.
That will work. Another way is to see if the
raid-controller can present two
volumes from your raid5, one small (for OS) and one big
(for gpt large fs).
If this works then you'll get one device on which you can use msdos partitions and boot from and one (>2T) on which you use gpt
(or simply lvm
directly on the device).
IMHO I would recommend using 2 internal drives with a software mirror for the CentOS install and keep your external array completely out of the OS install.
I use LVM for all volumes, use ext3 file system for the OS volumes, and you can pick or choose the file system you want to use for your data volumes, I'd probably stick with ext3 or maybe jfs if it wasn't too cumbersome to get going.
My server disk config of choice in kickstart speak:
part raid.1 --noformat --onpart sda1 part raid.2 --noformat --onpart sdb1 part raid.3 --noformat --onpart sda2 part raid.4 --noformat --onpart sdb2
raid /boot --useexisting --fstype ext3 --level=RAID1 --device=md0 raid.1 raid.2 raid pv.1 --noformat --useexisting --fstype "physical volume (LVM)" --level=RAID1 --device=md1 raid.3 raid.4
volgroup CentOS --noformat --useexisting --pesize=32768 pv.1 logvol / --useexisting --fstype ext3 --name=root --vgname=CentOS --size=8192 logvol swap --useexisting --fstype swap --name=swap --vgname=CentOS --size=4096
That setup will yield an initial 100MB /boot, 8GB / and 4GB swap and leave the rest of the space free for future use.
You can then create a separate VG out of your data array and sub-divide it into smaller LVs formatted for the FS of choice.
Don't allocate all storage initially, just what you need to get started you can always extend your volumes later relatively easily, but shrinking is far more troublesome.
-Ross
______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.