Basic comparison between ext4 vs ext3 vs NTFS, it will show the benefits of using ext4 file system, all of them supporting journaling file system will talk more about journaling.
This article is meant to serve as a guide for migrating a live system from ext3 to an ext4 filesystem, including migration of files to use extents, a major feature in ext4. It describes the entire migration procedure, including common pitfalls involving a migration of a live system, as opposed to doing a fresh install.
How To Convert An ext3/ext4 Root File System To btrfs On Ubuntu 12.10
ext3 and ext4 file systems can be converted to btrfs. For non-root
file systems, this can be done online (i.e., without reboot), while for
root file systems we need to boot into some kind of rescue system or
Live CD.
Earlier this year Google announced they would be switching to the EXT4 file-system on their Linux servers (previously they were still using the mature EXT2) and at the same time it was made available they had hired Ted Ts'o, the lead developer of this file-system currently in use by a...
I have seen that Ubuntu 11.10 is offering Ext4 as default file system. As I have googled some time on ext4 and found that ext3 is quite stable that ext4 as it still has some bugs.
Even the Ubuntu Documentation is referring Ext3. Link
So, I would like to know whether Ext4 is currently stable on 11.10 or not than Ext3
On file systems like btrfs you can preform a scrub, which will go though all the data to see if the data still matches the file system checksum.
I would like to check the data on ext4 if it is correct before a backup.
Question
ext4 doesn't have file system checksum, but can something similar be made?
How to Solve Zero Length File Problem in Linux’s Ext4 File System
By Tom Patrick
A preliminary development snapshot of ext4 was included in version 2.6.19 of the Linux kernel. On Oct 11, 2008, the patches that mark ext4 as stable code were merged in the Linux 2.6.28 source code repositories,denoting the end of the development phase and recommending ext4 adoption.
Last month we published benchmarks of EXT4 comparing this file-system's performance when it was first marked stable in the mainline kernel and then where it is at now in the Linux kernel while testing every major release in between. This article was followed up by a Btrfs versus EXT4 comparison usi...