active-zone-limit · shipping · also maximum active zones

Active-zone limit

An active-zone limit caps the zones simultaneously in implicitly open, explicitly open or closed states in a zoned namespace.

A closed, partially written zone still counts, even when no thread writes to it. Budget reclamation and metadata activity as well as foreground streams; the limit is not a free-byte counter.

Relations

related

zns, open-zone-limit, zone-capacity

Citations

1. Linux kernel documentation, zonefs: sequential files, explicit-open and runtime sysfs attributes. (accessed 2026-10-11)
2. Bjorling, Aghayev, Holmberg, Ramesh, Le Moal, Ganger and Amvrosiadis. ZNS: Avoiding the Block Interface Tax for Flash-based SSDs. USENIX ATC 2021, pp. 689-703, sections 3-5 and Table 3. (accessed 2026-10-11)
3. Hesela: ZNS resource limits and worked examples (accessed 2026-10-11)

JSON: /data/terms/active-zone-limit.json