Igor Moiseev Applied mathematician, Web Developer


The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

The main features includes: Large file system; Extents; Backward compatibility with ext2 and ext4; Persistent pre-allocation; Delayed allocation; Increasing the 32,000 subdirectory limit; Journal checksumming; Faster file system checking; Multiblock allocator; Improved timestamps.