linux-ext4 - Re: ext4 64bit (disk >16TB) question

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Date:	Wed, 16 Jul 2008 12:10:31 +0200
From:	Goswin von Brederlow <goswin-v-b@....de>
To:	"Jose R. Santos" <jrs@...ibm.com>
Cc:	Andreas Dilger <adilger@....com>,
	Goswin von Brederlow <goswin-v-b@....de>,
	linux-ext4@...r.kernel.org
Subject: Re: ext4 64bit (disk >16TB) question

"Jose R. Santos" <jrs@...ibm.com> writes:

> block boundary.  Dont have large disk to test on so Im playing with
> device mapper to see how I can fake one.  Our lab network is making
> thing difficult though.

Download

http://www.bullopensource.org/ext4/files/sparse_create

and for 32TiB use

dd if=/dev/zero of=/somewhere/SPACE bs=1 count=1 seek=100000000000
losetup /dev/loop0 /somewhere/SPACE
./sparse_create ext4dev /dev/loop0 68719476736

If you have a real block device to spare use that directly.

MfG
        Goswin
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