Experiences implementing zonefs support in ZenFS
summary
ZenFS gains ZoneFS support via a new device URI and a refactored zone-management layer with pluggable backends, converts each read/write from LBA→zone offset conversion, and represents zones as files with a cache of open zone-files to avoid excessive open/close. Benchmarks on an 8 TB CSD drive using ZenFS’s test suite show similar throughput but observable tail-latency clusters (~200 µs tail spikes) caused by zone finish blocking reads; removing read-locking largely removes the spikes and raises overall throughput.
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chapters (6)
- 0:00Introduction and motivation
- 2:06ZoneFS architecture overview
- 5:40Zone management implementation
- 8:11Performance benchmark setup
- 10:16Read latency analysis
- 12:48Q&A on ZoneFS benefits
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