Heads up: e2fsprogs-1.42-WIP-0702 pushed to rawhide

Richard W.M. Jones rjones at redhat.com
Mon Oct 3 21:05:27 UTC 2011


On Mon, Oct 03, 2011 at 03:10:43PM -0500, Eric Sandeen wrote:
> On 10/3/11 1:13 PM, Richard W.M. Jones wrote:
> > On Mon, Sep 26, 2011 at 02:51:33PM -0500, Eric Sandeen wrote:
> >> Another little heads up - a newer snapshot is built in rawhide now.
> >>
> >> Anyone who wants to fiddle with large ext4 filesystems, have at
> >> it please!
> > 
> > Is there any background information to this change that I can read?
> > 
> > I created a 2**60 byte disk, partitioned it, and tried to create an
> > ext4 filesystem on it, but that doesn't work:
> 
> heh; going for the gusto I see!
> 
> Can we maybe start with a mere 500 terabytes? ;)

Well I started with 2**63-513, but sadly qemu has a bug that prevents
me from writing to such a disk ...

https://rwmj.wordpress.com/2011/10/03/maximum-qcow2-disk-size/
https://bugs.launchpad.net/qemu/+bug/865518

> >   ><rescue> mke2fs -t ext4 /dev/vda1 
> >   mke2fs 1.42-WIP (25-Sep-2011)
> >   
> >   Warning: the fs_type huge is not defined in mke2fs.conf
> 
> Icky, but unrelated to below, I think
> 
> >   /dev/vda1: Cannot create filesystem with requested number of inodes while setting up superblock
> 
> sounds like it calculated an inode ratio that put it over the 2^32 inode nr. limit.
> 
> I'll look into it.

Thanks.  Let me know if/when there's anything else I can test.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
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