{
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  "docId": "RFC6688",
  "document": {
    "abstract": "Parallel NFS (pNFS) extends the Network File System version 4 (NFSv4) to enable direct client access to file data on storage devices and bypass the NFSv4 server. This can increase both performance and parallelism, but it requires additional client functionality, some of which depends upon the type of storage used. The pNFS specification for block storage (RFC 5663) describes how clients can identify the volumes used for pNFS, but this mechanism requires communication with the NFSv4 server. This document updates RFC 5663 to add a mechanism that enables identification of block storage devices used by pNFS file systems without communicating with the server. This enables clients to control access to pNFS block devices when the client initially boots, as opposed to waiting until the client can communicate with the NFSv4 server. [STANDARDS-TRACK]",
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      "confidence": "high",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "authors": [
      {
        "name": "David L. Black"
      },
      {
        "name": "Jason Glasgow"
      },
      {
        "name": "Sorin Faibish"
      }
    ],
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "docId": "RFC6688",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "docLabel": "IETF RFC 6688",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "docNumber": "6688",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T16:06:38.174Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
    },
    "docTitle": "Parallel NFS (pNFS) Block Disk Protection",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "doi": "10.17487/RFC6688",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "href": "https://doi.org/10.17487/RFC6688",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "keywords": [
      "NFS",
      "NFSv4",
      "pNFS",
      "SAN",
      "GPT"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "]--------]",
        "NFS",
        "NFSv4",
        "pNFS",
        "SAN",
        "GPT"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T16:06:38.174Z",
      "version": "extractDocs.js@commit:cc2368606b5f"
    },
    "pages": "6",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "publicationDate": "2012-07-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "references": {
      "bibliographic": [
        "RFC4122",
        "orphan/RFC6688/h:446443f4"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=5 proseBlocks=8 skippedAnchorBlocks=6",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "normative": [
        "RFC2119",
        "RFC5663",
        "orphan/RFC6688/h:6428a448"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc6688/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
      "updated": "2026-10-20T09:42:29.886Z",
      "version": "extractDocs.js@commit:6ff5f1bb34e3"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "amends": [
        "RFC5663"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
      },
      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6688/",
        "updated": "2026-10-20T09:42:29.886Z",
        "version": "extractDocs.js@commit:6ff5f1bb34e3"
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}