zone-write-pointer · shipping · also Zone WP

Zone write pointer

A zone write pointer identifies the next writable logical block address in a sequential zone when its current state makes that pointer valid.

Under ZNS 1.1 the pointer is valid in Empty, implicitly open, explicitly open and Closed states, but not in Full, Read Only or Offline. It is not a committed-record count. Failed writes may advance or invalidate it; recovery must check the reported state as well as the pointer.

Relations

related

zns, zone-append, zone-capacity, zone-reset, zone-finish

Citations

1. NVM Express, Zoned Namespace Command Set Specification, revision 1.1 (18 May 2021), Figure 4 and sections 2.1.1.2.1.1, 3.4.3.1.2 and 3.4.3.1.4. Copyright 2007-2021 NVM Express, Inc. ALL RIGHTS RESERVED. (accessed 2026-10-13)
2. Linux kernel documentation, zonefs: sequential zone files and I/O error handling. (accessed 2026-10-13)
3. Hesela: ZNS resource limits, lifecycle and recovery boundaries (accessed 2026-10-13)

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