On Wed, Jan 28, 2009 at 08:47:09PM +0000, Etienne Lorrain wrote: > > De: Andreas Dilger <adilger@xxxxxxx> > > Date: Mercredi 28 Janvier 2009, 18h01 > > On Jan 28, 2009 00:20 +0000, Etienne Lorrain wrote: > > > I have created an ext4 fs on a 64 Mb USB disk by > > > "mkfs.ext4 /dev/sdb" on debian lenny (no partition). > > > When I analyse the filesystem using my own tools, I > > > seem to read at least some bg_inode_table_hi values which > > > are not null, on such a very small filesystem. bg_inode_table_hi doesn't exist on a small filesystem. You need to take a look at if INCOMPAT_64BIT is not set, or if INCOMPAT_64BIT is set and s_desc_size is 32, then only the first 32 bytes of struct ext4_group_desc are in use --- which look exactly the same as ext2_group_desc. So there is no problem here. Just a misunderstanding of the filesystem format. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
