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RE: How to create EXT3 file system image from directories?



Title: RE: How to create EXT3 file system image from directories?

Thanks a lot, it works!
Why do I have to use "-o loop" option?

Tx,
Debbie

-----Original Message-----
From: Theodore Ts'o [mailto:tytso mit edu]
Sent: Wednesday, May 21, 2003 7:55 PM
To: Debbie Xu
Cc: 'ext3-users redhat com'
Subject: Re: How to create EXT3 file system image from directories?

On Wed, May 21, 2003 at 02:57:00PM -0700, Debbie Xu wrote:
> Hi there,
>
> Is there a utility to create an EXT3 file system image from directories?
> Just like the mkfs.jffs2 which creates a JFFS2 file system image from
> directories?
>
> The "mke2fs -j" only creates the bare bone file system, what I want is to
> build an image with pre-built content.

The easist thing to do is to create a filesystem on a file using
mke2fs, and then mount the filesystem using the loopback device:

dd if=/dev/zero of=foo.img bs=1k count=16384
mke2fs -f foo.img
mount -o loop foo.img /mnt
cp -r /source /mnt
umount /mnt

                                                - Ted


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