Power

 View Only

 using inline versus external log filesystem

nuno fernandes's profile image
nuno fernandes posted 02/17/25 06:54 AM

I would like to know if there are any known drawbacks using inline log filesystems in terms of performance versus external log filesystems, namely using relational database solutions?

"External logs store the journal on a dedicated volume (LV). They are better suited for:
 
✔ Large Filesystems (100GB+) – External logs improve performance by reducing log contention.
✔ High-Performance Workloads – Systems with heavy read/write operations (databases, large file servers) benefit from offloading logs to a separate device.
✔ Multiple Filesystems – If multiple filesystems share the same log volume, it can improve disk efficiency and reduce redundancy.
✔ Faster Crash Recovery – External logs are more efficient for journal replay after a crash.
✔ Dedicated Storage Solutions – If using SSDs or high-speed disks, external logs can be placed on faster storage for better performance.
 
General Recommendation
 
Use inline logs for simple, low-impact workloads.

Use external logs for performance-sensitive environments, large filesystems, and systems with heavy I/O."

I heard! 

Is that true?

Thanks in advance,

Nuno