Q14

Difference between ext3 and ext4?

Q: Difference between ext3 and ext4?

> * **ext3**: Supported journaling but had a file size limit of 2TB and maximum volume size of 16TB. * **ext4**: Extends size support (16TB file limit, 1EB volume limit), utilizes **extents** (contiguous block tracking to reduce fragmentation), performs delayed allocation to disk, and features faster filesystem checking (`fsck`).

💬Answer

ext3: Supported journaling but had a file size limit of 2TB and maximum volume size of 16TB.
ext4: Extends size support (16TB file limit, 1EB volume limit), utilizes extents (contiguous block tracking to reduce fragmentation), performs delayed allocation to disk, and features faster filesystem checking (fsck).

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