Re: [Fedora-livecd-list] 3 GB barrier

[Frederick Grose]

On Tue, May 12, 2015 at 12:16 PM, ToddAndMargo <ToddAndMargo(a)zoho.com&gt;
wrote:

>  On 05/12/2015 09:06 AM, Scott Dowdle wrote:
>
> > Greetings,
> >
> > ----- Original Message -----
> >
> >> Is there a reason why there is a 3 GB barrier on persistence
> >> with ext3?
> >>
> >> Am I just banging my head trying to figure a way around it?
> >>
> >
> > I'm guessing that the USB thumbdrives are formatted with vfat and that
> > limits the max filesize?
> >
> > TYL,
> >
> >
>  Hi Scott,
>
>  I wipe and reformat with ext3.
>
>  And it does sound like someone put an artificial 3 GB
>  barrier into it to accommodate max single file size
>  limitation of FAT.
>
>  With the following on a 16 GB ext3 stick:
>
>  livecd-iso-to-disk --overlay-size-mb 13287
>  Fedora-Live-Xfce-x86_64-21-5.iso /dev/sdc1
>
>  It will tell you the max "--overlay-size-mb" is 13287 if
>  you tell it something larger than it likes.
>
>  But, even when adjusted to make the stinker happy, you
>  still get 3 GB.
>
>  So, basically, is this a bug?  And, has it been fixed
>  anywhere? 

​See this recent response,
https://lists.fedoraproject.org/pipermail/livecd/2015-May/007723.html​


​It is important to understand that Fedora LiveCD technology is based on
embedded filesystems,
an ext4 filesystem and partition (inside the ext3fs.img file) that is
compressed inside a SquashFS
filesystem (inside the squashfs.img file) all saved on the LiveCD or .iso
file in an ISO 9660 filesystem,
or on a LiveUSB device in the LiveOS folder of the device filesystem (which
may be a fat, extX, or
other filesystem).  With this technology, when one sees or thinks about a
file or filesystem size, one
must be careful and clear about which of the many simultaneously present
filesystems one is
referring to.

        --Fred

-T