![]() ![]() Journal (lowest risk) Both metadata and file contents are written to the journal before being committed to the main file system. There are three levels of journaling available in the Linux implementation of ext3: ^ In Linux, 8 KiB block size is only available on architectures which allow 8 KiB pages, such as Alpha.The size of a block can vary, affecting the maximum number of files and the maximum size of the file system: Block size The maximum number of blocks for ext3 is 2 32. In significant data corruption, ext2 or ext3 may be recoverable, while a tree-based file system may not. The file system metadata is all in fixed, well-known locations, and data structures have some redundancy. This situation might sometimes be a disadvantage, but for recoverability, it is a significant advantage. The close relationship also makes conversion between the two file systems (both forward to ext3 and backward to ext2) straightforward.Įxt3 lacks "modern" filesystem features, such as dynamic inode allocation and extents. The ext2 and ext3 file systems share the same standard set of utilities, e2fsprogs, which includes an fsck tool. ![]() This situation has allowed well-tested and mature file system maintenance utilities for maintaining and repairing ext2 file systems to also be used with ext3 without major changes. Without these features, any ext3 file system is also a valid ext2 file system.
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