The ext4 file system does not honor the 'secure deletion' file attribute, which is supposed to cause overwriting of files upon deletion.Ī patch to implement secure deletion was proposed in, but did not solve the problem of sensitive data ending up in the file-system journal. Ts'o believes that Btrfs is the better direction because 'it offers improvements in scalability, reliability, and ease of management'.

In, the principal developer of the ext3 and ext4 file systems, Theodore Ts'o, stated that although ext4 has improved features, it is not a major advance, it uses old technology, and is a stop-gap. On 11 October, the patches that mark ext4 as stable code were merged in the Linux 2. The Mac OS cannot mount ext partitions by default, unlike mounting NTFS or FAT So here are the simple Mac OS X and the ext filesystem: how to mount ext2, ext3 or ext4 Mounting an ext2/ext3/ext4 partition on Mac OS. The primary filesystem format in OS X is Apple's HFS Plus (or Mac OS X To use the FUSE system to mount and manage Ext2 and Ext3. A preliminary development version of ext4 was included in version 2. Get project updates, sponsored content from our select partners, and more. Please provide the ad click URL, if possible.

The easiest way around this is to copy the files somewhere else from inside a root shell sudo -s, then change the permissions on the copies to at least rwxr-xr-x for folders and rw-r-r- for files. Install the fuseext2 package, which should pull down all the required dependencies: sudo apt-get install fuseext2 Determine the device file for the external USB drive and ext3 filesystem using fdisk dash ell. Unmount it in the usual way when you're done. I was able to mount and read files off my external drive with OS X Tested software configuration: Mac OS X Open Terminal and create a folder as a mountpoint-somewhere-for the ext3 filesystem. So there's a possibility that either 4K will come back as an option in a later kernel, or else the Linux kernel will learn to deal with large block sizes irrespective of the machine architecture patches for 2. I guess the lesson learned here is to format the external using another Linux machine to ensure the 'least common denominator' 4K block size before plugging it into the ReadyNAS and using it for backups-if you want it to be accessible from other machine architectures. My external's ext3 filesystem definitely uses the 16K block size. From forum post 'Restore via Linux fails' viewtopic.

Mac read ext4