Re: RAID5 partition not visible from dmesg/"fdisk -l" but visible fromESXGUI

chaim.rieger@xxxxxxxxx · Tue, 8 Jul 2008 04:30:46 +0000

Check to see if there's a 2tb limit on 2.4 kernel

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-----Original Message-----
From: Tai Yiap YEO <YEO_Tai_Yiap@xxxxxxxxxx>

Date: Tue, 8 Jul 2008 12:04:50 
To: <chaim.rieger@xxxxxxxxx>
Cc: Chris TAY<Chris_TAY@xxxxxxxxxx>; General Red Hat Linux discussion list<redhat-list@xxxxxxxxxx>
Subject: Re: RAID5 partition not visible from dmesg/"fdisk -l" but visible fromESX
 GUI

Hi,

ESX version: 3.5
Kernal: 2.4.21-47.0.1.ELvmnix on an i686

Thanks and Regards

YEO TAI YIAP • IT Technical Support • Information Technology 
Singapore Land Authority • 6323-9816 (DID) • 6325-1413 (Fax) • 
http://www.sla.gov.sg
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development of Singapore.
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chaim.rieger@xxxxxxxxx 
08 Jul, 2008 11:59 AM
Please respond to
chaim.rieger@xxxxxxxxx

To
"General Red Hat Linux discussion list" <redhat-list@xxxxxxxxxx>
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Chris TAY/SLA/SINGOV@SINGOV, Tai Yiap YEO/SLA/SINGOV@SINGOV
Subject
Re: RAID5 partition not visible from dmesg/"fdisk -l" but visible fromESX 
GUI

What version and kernel ?

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-----Original Message-----
From: "sunhux G" <sunhux@xxxxxxxxx>

Date: Tue, 8 Jul 2008 11:57:00 
To: General Red Hat Linux discussion list<redhat-list@xxxxxxxxxx>
Cc: <chris_tay@xxxxxxxxxx>; <yeo_tai_yiap@xxxxxxxxxx>
Subject: RAID5 partition not visible from dmesg/"fdisk -l" but visible 
from
                 ESX GUI

Hi,

I'm asking on behalf of a friend.

He has a 5 TB  SCSI hotplug disk that's configured as hardware
RAID 5.

>From ESX GUI, he could see 4.6TB usable space (ie nett after RAID 5).

After installing Linux OS, he could see 2TB mounted but ESX GUI
showed 4.6TB.

So he issued "fdisk -l" & "dmesg" (actually "dmesg | grep sector")
that I suggested & /dev/sda is shown as 2TB but nothing was shown
for the remaining 2.6TB.

Where's the 2.6TB gone to?

I always thought "fdisk -l" would show every disk resource that's
presented (regardless on what kind of filesystem, be it raw or
GFS or UFS or ...) or I'm missing something?

Thanks
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