I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Milt Mallory
Topix.com
650-461-8316
Always consider the issues of progressive enhancement and graceful degradation (from Dom Scripting manual)
Milt Mallory wrote:
I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
What have you done to try to get it working?
http://www.cyberciti.biz/tips/fdisk-unable-to-create-partition-greater-2tb.h...
Last I recall drives larger than 2TB weren't "officially" supported by Red hat so it may not be perfect.
The last infortrend systems I used supported exporting logical drives of smaller sizes which worked for me.
Last I heard you couldn't boot off of drives larger than 2TB with a normal bios(with Intel's EFI I think you can?).
nate
On Thu, 24 Jul 2008 at 6:42pm, Milt Mallory wrote
I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Are you using gpt disk labels and parted (rather than fdisk) to do your partitioning?
On Thu, Jul 24, 2008 at 7:51 PM, Joshua Baker-LePain jlb17@duke.edu wrote:
On Thu, 24 Jul 2008 at 6:42pm, Milt Mallory wrote
I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Are you using gpt disk labels and parted (rather than fdisk) to do your partitioning?
You can't install centos (or redhat) over a gpt partition (unless itanium platform) and there is a big chance your bios won't boot such installation. I came with 2 solutions: if disk access performance isn't important (as for backup), I do software raid; or I install two little raid1 disks for the OS and then I use GPT or LVM on the multi-tera raid of big disks.
on 7-25-2008 6:26 AM Marcelo Roccasalva spake the following:
On Thu, Jul 24, 2008 at 7:51 PM, Joshua Baker-LePain jlb17-4+jYJfmkT58@public.gmane.org wrote:
On Thu, 24 Jul 2008 at 6:42pm, Milt Mallory wrote
I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Are you using gpt disk labels and parted (rather than fdisk) to do your partitioning?
You can't install centos (or redhat) over a gpt partition (unless itanium platform) and there is a big chance your bios won't boot such installation. I came with 2 solutions: if disk access performance isn't important (as for backup), I do software raid; or I install two little raid1 disks for the OS and then I use GPT or LVM on the multi-tera raid of big disks.
Or partition the array with a small partition for OS and big partition (gpt) for data. You should be able to carve up the array that way.
On Fri, 25 Jul 2008 at 2:17pm, Scott Silva wrote
on 7-25-2008 6:26 AM Marcelo Roccasalva spake the following:
You can't install centos (or redhat) over a gpt partition (unless itanium platform) and there is a big chance your bios won't boot such installation. I came with 2 solutions: if disk access performance isn't important (as for backup), I do software raid; or I install two little raid1 disks for the OS and then I use GPT or LVM on the multi-tera raid of big disks.
Or partition the array with a small partition for OS and big partition (gpt) for data. You should be able to carve up the array that way.
I think you're mixing your terminology there. gpt isn't a partition type, it's a disklabel. There's only one per disk (obviously), no matter how many partitions are on the disk.
What some array controllers can do is carve a single array into multiple volumes (usually each presented on their own LUN). Then you could carve the one array into a small boot volume (with an msdos disklabel and multiple partitions) on one LUN and the rest in a large data bolume (with a gpt disklabel) on the other LUN.
YES. I forgot to mention that we have the OS on a separate 20GB RAID'ed partition. The remaining disk space is allocated to the big GPT RAID'ed partition.
Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105
----- Original Message ----- From: "Scott Silva" ssilva@sgvwater.com To: centos@centos.org Sent: Friday, July 25, 2008 4:17:50 PM GMT -06:00 US/Canada Central Subject: [CentOS] Re: 6TB SCSI RAID vs. Centos
on 7-25-2008 6:26 AM Marcelo Roccasalva spake the following:
On Thu, Jul 24, 2008 at 7:51 PM, Joshua Baker-LePain jlb17-4+jYJfmkT58@public.gmane.org wrote:
On Thu, 24 Jul 2008 at 6:42pm, Milt Mallory wrote
I have an Infortrend RAID box I'd like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Are you using gpt disk labels and parted (rather than fdisk) to do your partitioning?
You can't install centos (or redhat) over a gpt partition (unless itanium platform) and there is a big chance your bios won't boot such installation. I came with 2 solutions: if disk access performance isn't important (as for backup), I do software raid; or I install two little raid1 disks for the OS and then I use GPT or LVM on the multi-tera raid of big disks.
Or partition the array with a small partition for OS and big partition (gpt) for data. You should be able to carve up the array that way.
on 7-24-2008 3:42 PM Milt Mallory spake the following:
I have an Infortrend RAID box I’d like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Did you try creating GPT partitions with parted? Fdisk won't do it.
I'll second that... we recently put a system online with over 3TB of storage. The only way to create a storage medium that large was to use a gpt disk label and use parted to do the partitioning. mkfs had no problems formatting the partition and it's been working properly for quite some time now.
Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105
----- Original Message ----- From: "Scott Silva" ssilva@sgvwater.com To: centos@centos.org Sent: Thursday, July 24, 2008 5:56:47 PM GMT -06:00 Guadalajara / Mexico City / Monterrey Subject: [CentOS] Re: 6TB SCSI RAID vs. Centos
on 7-24-2008 3:42 PM Milt Mallory spake the following:
I have an Infortrend RAID box I’d like to see as one big 6TB partition, but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them) 48 bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB?
Did you try creating GPT partitions with parted? Fdisk won't do it.
What SCSI controller are you using?
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Tim Nelson Sent: Thursday, July 24, 2008 7:05 PM To: CentOS mailing list Subject: Re: [CentOS] Re: 6TB SCSI RAID vs. Centos
I'll second that... we recently put a system online with over 3TB of storage. The only way to create a storage medium that large was to use a gpt disk label and use parted to do the partitioning. mkfs had no problems formatting the partition and it's been working properly for quite some time now.
Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105
----- Original Message ----- From: "Scott Silva" ssilva@sgvwater.com To: centos@centos.org Sent: Thursday, July 24, 2008 5:56:47 PM GMT -06:00 Guadalajara / Mexico City / Monterrey Subject: [CentOS] Re: 6TB SCSI RAID vs. Centos
on 7-24-2008 3:42 PM Milt Mallory spake the following:
I have an Infortrend RAID box I'd like to see as one big 6TB
partition,
but I only can get 2.2TB partitions to work. I was trying to do this with an Adaptec controller but apparently they are only (any of them)
48
bits wide. Does anybody have a working system for SCSI/Centos over
2.2TB?
Did you try creating GPT partitions with parted? Fdisk won't do it.
-
Joshua Baker-LePain -
Marcelo Roccasalva -
Milt Mallory -
nate -
Scott Silva -
Tim Nelson