Features of XFS
As mentioned it supports metadata journaling, which facilitates quicker crash recovery.
Tightly integrated backup and restore utilities
Online defragmentation and growth: This filesystem can be defragmented and enlarged while mounted and active.
Comprehensive diagnostics capabilities
Scalable and fast repair utilities. XFS scales to exabytes more than 500TB
Optimizations for streaming video workloads
B-tree indexing for scalability of free space management
Ability to support a large number of concurrent operations
Extensive run-time metadata consistency checking
Sophisticated metadata read-ahead algorithms
Delayed, Extent-based allocation
Dynamically allocated inodes
Extended attributes (xattr): This allows the system to associate several additional name/value pairs per file. It is enabled by default.
Compared to Ext4, XFS has a relatively poor performance for single threaded, metadata-intensive workloads. This includes workload that creates or deletes large numbers of small files in a single thread.
Quota journaling: This avoids the need for lengthy quota consistency checks after a crash.