Re: [Genext2fs-devel] genext2fs has a 4GB size limitation?

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Hi Corey,
I love your patches! They actually seem working fine -- it can successfully create a .ext2 file of 8.5GB! 
Of course the speed is slow -- I spent about 1.5 hours -- anyway, they do work! :-)

BTW, I didn't know why it failed to create a valid .ext2 file in my previous test. That may be related to something else and has nothing to do with your patches.

Hi Finn, Xavier and all, how do you think about the stability of Corey's patches? From my limited tests, they seem working fine -- surely I'll do more tests.

I think the patches are really useful since nowadays it seems not unusual at all for us to generate >4GB .ext3 image with genext2fs.

Thanks!

-- Dexuan

> -----Original Message-----
> From: Cui, Dexuan [mailto:dex...@in...]
> Sent: Wednesday, March 28, 2012 9:39 PM
> To: mi...@ac...; gen...@li...
> Subject: Re: [Genext2fs-devel] genext2fs has a 4GB size limitation?
> 
> Hi Corey,
> Thanks for the quick reply!
> I tried the patches you sent in last June(I had to manually rebase one patch of
> them to make the compilation pass), but eventually the generated .ext2 file
> can't be recognized by "file" and tune2fs reports there is not an valid
> superblock -- I suspect I might make some mistakes when rebasing my
> patches(???).
> 
> Could you please resubmit all your patches so I can re-try them?
> 
> BTW, I think your work is really useful. Not sure why it hasn't been merged into
> the cvs repo until now...
> 
> PS, below is the patch list I got from the mailing list of last June.
> [Genext2fs-devel] [PATCH 2/3] Handle files changing while we are working
> [Genext2fs-devel] [PATCH 2/3] Rework creating the lost+found directory
> [Genext2fs-devel] [PATCH 1/3] Remove unneeded setting of s_reserved.
> [Genext2fs-devel] [PATCH 3/3] Make sure superblock is clear on allocation
> [Genext2fs-devel] [PATCH 2/2] Clear copied files to the end of the block
> [Genext2fs-devel] [PATCH 1/2] Fix "file same" comparison [Genext2fs-devel]
> [PATCH 13/13] Add volume id support.
> [Genext2fs-devel] [PATCH 12/13] Add rev 1 support, large file support, and
> rework holes [Genext2fs-devel] [PATCH 11/13] Copy files into the filesystem a
> piece at a time [Genext2fs-devel] [PATCH 10/13] Convert over to keeping the
> filesystem on disk [Genext2fs-devel] [PATCH 09/13] Move byte swapping into
> the get/put routines.
> [Genext2fs-devel] [PATCH 08/13] Separate out the creation of the filesystem
> structure.
> [Genext2fs-devel] [PATCH 07/13] Move hdlinks into the filesystem structure.
> [Genext2fs-devel] [PATCH 06/13] Improve the efficiency of extend_blk
> [Genext2fs-devel] [PATCH 05/13] Make filesystem struct not an overloay
> [Genext2fs-devel] [PATCH 04/13] Add a dirwalker for walking through directory
> entries Genext2fs-devel] [PATCH 03/13] Add get_blkmap and put_blkmap.
> [Genext2fs-devel] [PATCH 02/13] Add put_blk and put_nod routines
> [Genext2fs-devel] [PATCH 01/13] Fix warnings, remove some unused macros.
> 
> Thanks,
> -- Dexuan
> 
> 
> > -----Original Message-----
> > From: Corey Minyard [mailto:tcm...@gm...]
> > Sent: Wednesday, March 28, 2012 9:25 PM
> > To: gen...@li...
> > Subject: Re: [Genext2fs-devel] genext2fs has a 4GB size limitation?
> >
> > I've submitted a patch to fix this, but I don't think there has been a
> > release since I have.  What's the status on the patch?
> >
> > I can resubmit if you like.
> >
> > -corey
> >
> > On 03/27/2012 09:10 PM, Cui, Dexuan wrote:
> > > Hi all, does anybody know the genext2fs tool have a limitation about
> > > the size
> > of the generated .ext3 file?
> > >
> > > When I try to use it to create an image with>5GB(I'm not sure the
> > > exact
> > minimal size that can cause the following issue), it always reports "genext2fs:
> > couldn't allocate a block (no free space) "
> > >
> > > By googling, this seems a long-standing issue?
> > >
> > > I tried to enlarge the -b parameter and decrease -i parameter to
> > > enlarge the size of the generated .ext3 file and increase the inode
> > > number, but still got the same issue. :-(
> > >
> > > Any hint?
> > >
> > > Thanks,
> > > -- Dexuan
> > >
> > >
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