>From http://kernelnewbies.org/Ext4 "3.2. Migrate existing Ext3 filesystems to Ext4", instructions to migrate are different from the ext4.txt file: /* ----------------------- */ You need to use the tune2fs and fsck tools in the filesystem, and that filesystem needs to be unmounted. Run: * tune2fs -O extents,uninit_bg,dir_index /dev/yourfilesystem After running this command you MUST run fsck. If you don't do it, Ext4 WILL NOT MOUNT your filesystem. /* -------------------------- * -- Berendsen ----Original Message----- From: Andreas Friedrich Berendsen <afberendsen@xxxxxxxxx> To: linux-ext4@xxxxxxxxxxxxxxx Subject: May I suggested an update for ext4.txt file? Date: Wed, 25 Feb 2009 06:00:07 +1300 kernel 2.6.28.7 efs2prog: 1.41.4 File Documentation/filesystems/ext4.txt states: ... Or to configure an existing ext3 filesystem to support extents: # tune2fs -O extents /dev/hda1 .... To convert from ext2 (a very old filesystem :) ) to ext4, it's necessary to add more options. I'm not sure which one made the trick. tune2fs -O has_journal,dir_index,filetype,extent,flex_bg,sparse_super,large_file,huge_file,uninit_bg,dir_nlink,extra_isize Also, /etc/filesystems does not contain an entry for ext4. /etc/efs2prog.conf is ok. -- Berendsen -- __________________________________________ Andreas Friedrich Berendsen SCA OCP MSCA A+ Linux+ Network+ HpMASE -- 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
