{
  "slug": "zone-write-plugging",
  "term": "Zone write plugging",
  "aliases": [],
  "definition": "A Linux block-layer mechanism that queues covered writes per sequential zone before dispatch to preserve the issuer's sequential write pattern.",
  "note": "Introduced upstream in Linux 6.10, it removes the mq-deadline dependency. Native Zone Append bypasses this plug; emulated append uses it. It neither fixes invalid application offsets nor serializes Reset or Finish against in-flight writes, and is not a durability guarantee.",
  "status": "shipping",
  "advantages": [],
  "limitations": [],
  "related": [
    "zone-write-locking",
    "zoned-block-device",
    "zone-append",
    "zone-write-pointer"
  ],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "updated": "2026-10-16",
  "citations": [
    {
      "id": "linux-ordering-docs",
      "title": "Western Digital, Zoned Storage: Write Ordering Control; locking through Linux 6.9 and plugging from Linux 6.10.",
      "url": "https://zonedstorage.io/docs/linux/sched",
      "accessed": "2026-10-16"
    },
    {
      "id": "linux610-zoned",
      "title": "Linux v6.10, block/blk-zoned.c: blk_zone_wplug_prepare_bio and blk_zone_plug_bio.",
      "url": "https://github.com/torvalds/linux/blob/v6.10/block/blk-zoned.c",
      "accessed": "2026-10-16"
    },
    {
      "id": "linux610-mq",
      "title": "Linux v6.10, block/blk-mq.c: blk_mq_submit_bio and zone plugging before request allocation.",
      "url": "https://github.com/torvalds/linux/blob/v6.10/block/blk-mq.c",
      "accessed": "2026-10-16"
    },
    {
      "id": "hesela-zns",
      "title": "Hesela: ZNS resource limits and worked examples",
      "url": "https://hesela.com/analyses/zns-open-active-zone-limits/",
      "accessed": "2026-10-16"
    }
  ]
}