32bit filesystem limitations

Ivan Voras ivoras at freebsd.org
Tue Mar 31 06:53:14 PDT 2009

Andrei Kolu wrote:
> Ivan Voras wrote:
>> 2009/3/25 Barry Pederson <bp at barryp.org>:
>>> Is there any reason not to skip labeling/partitioning and use da1
>>> directly?
>>>  Just newfs it and mount it.  I've done this with a couple large Areca
>>> arrays with no ill effect so far.
>> Nope, no practical reason. Skip the partitioning if you don't need it.
> Finally: # newfs /dev/da1

(note: no soft-updates here)

> a# df -H
> Filesystem     Size    Used   Avail Capacity  Mounted on
> .....
> /dev/da1       3.4T    4.1k    3.1T     0%    /data
> .....
> Mission accomplished. But why sysinstall plays such an ugly game? This
> problem should be announced as a bug.

Because sysinstall only knows about fdisk and bsdlabel partition types,
and those have a fixed format defined in the old days. You get the same
problem with basically all operating systems today except latest
versions of Windows Server which uses GPT by default.

(but simply always using GPT by default isn't a good option because it
will interfere with people wanting to multi-boot other operating systems).

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