Fwd: Fwd: Installing FreeBSD on large disk 2TB

[Vlad GURDIGA]

-- Forwarded message --
From: Kirk McKusick [EMAIL PROTECTED]
Date: 12-Jun-2007 16:49
Subject: Re: Fwd: Installing FreeBSD on large disk 2TB
To: Vlad GURDIGA [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED], Kris Kennaway [EMAIL PROTECTED],
Enrique Ayesta Perojo [EMAIL PROTECTED]


I believe that there are some limitations on booting FreeBSD from
filesystems bigger than 2Tb, but I know of no limitations on building
non-root filesystems bigger than 2Tb. I have copied Kris Kennaway
and the FreeBSD filesystem mailing list in the hope that someone
can give a more precise answer than me.

   Kirk McKusick

-- Forwarded message --
Date: Mon, 11 Jun 2007 17:16:45 +0300
From: Vlad GURDIGA [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Fwd: Installing FreeBSD on large disk 2TB
X-ASK-Info: Message Queued (2007/06/11 07:17:40)
X-ASK-Info: Confirmed by User (2007/06/11 07:20:20)

Hello,

Wikipedia says that you contributed to development of FFS and I
thought you might give a sure answer to a question about it.
These days I saw a question on freebsd-questions mailing list that was
left without a solution till now [see below].

Is there any chance that FFS can be extended to handle larger disks?

Best regards.


-- Forwarded message --
From: Enrique Ayesta Perojo [EMAIL PROTECTED]
Date: 11-Jun-2007 11:13
Subject: Installing FreeBSD on large disk 2TB
To: freebsd-questions@freebsd.org

Hello

I'm trying to install FreeBSD 6.2 on a HP DL320s. This server has a P400 RAID
controller with 12 SATA disk drives attached to it. The RAID controller is
supported in FreeBSD through the ciss driver.

The problem happens when i try to use a RAID larger in size to 2 Terabyte,
then the install program freezes and the machine reboots (it cannot find the
disk). If the array is smaller than 2 Terabytes then there is no problem, the
controller detects the disk and i can install FreeBSD on it. I have tried
with i386 and AMD64 versions (the server has a Xeon processor supported by
AMD64)

Any clue on how to solve it? FreeBSD can't be installed on disks larger than 2
TB?

Thanks
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Fwd: Installing FreeBSD on large disk 2TB

[Vlad GURDIGA]

-- Forwarded message --
From: Francisco Reyes [EMAIL PROTECTED]
Date: 13-Jun-2007 03:42
Subject: Re: Installing FreeBSD on large disk 2TB
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED], Enrique Ayesta Perojo
[EMAIL PROTECTED], Kris Kennaway [EMAIL PROTECTED]




There is a simmilar thread related to filesystems greater than 2TB.
The subject is: Filesystems larger than 2TB

I started the thread and from what I can gather you can not have a
filesystem greater than 2TB on your boot device.
Also you can not use sysinstall to create the partition if it is greater
than 2TB.


The problem happens when i try to use a RAID larger in size to 2 Terabyte,
then the install program freezes and the machine reboots (it cannot find the
disk).


Split your drives.
Make a RAID1 with 2 drives and install
/
/usr
/var
/tmp
swap

The second raid with the rest of the drives you should be able to create the
partition manually, not from sysinstall.


Any clue on how to solve it? FreeBSD can't be installed on disks larger than 2
TB?


As far as I can tell no.

As for creating the partition after you have a working system there were two
methods mentioned.

Was was using newfs against the raw device like
newfs -s /dev/da0s2

The other one involves something called GPT, but seems like it is a more
difficult method and it also seems like there is ongoing discussion about
GPT.

I also think, but am not sure, that it will be easier to have partitions
greater than 2TB when ZFS is incorporated into the OS.
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