Messages in this thread | | | Date | Fri, 9 Jun 2006 18:04:41 -0400 | From | Theodore Tso <> | Subject | Re: [Ext2-devel] [RFC 0/13] extents and 48bit ext3 |
| |
On Fri, Jun 09, 2006 at 05:53:14PM -0400, Jeff Garzik wrote: > Yes, it's not a small change to the on-disk format. > > If you write tools that read an ext3 filesystem, you won't be able to > read file data at all, without updating your code.
Most tools that read an ext2/3 filesystem directly use the libext2fs library, and it will definitely be the case that for files smaller than 4TB, even on a filesystem with extents enabled, as long as you are using a version of libext2fs which is extents-aware, it will work without any changes.
For files larger than 4TB, we will need some kind of LFS-like interface change (i.e., ext2fs_file_llseek64 vs. ext2fs_file_llseek), but that should be the only change needed by the tool.
- Ted - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |