{"action":"created","comment":{"url":"https://api.github.com/repos/freenas/freenas-docs/pulls/comments/172593043","pull_request_review_id":101635207,"id":172593043,"diff_hunk":"@@ -34,11 +34,27 @@ can also reduce the length of these limits by one or more bytes.\n    | Names               |                |                                                                        |\n    +---------------------+----------------+------------------------------------------------------------------------+\n    | Mounted Filesystem  | 88 bytes       | Mounted filesystem path length (*MNAMELEN*). Longer paths can prevent  |\n-   | Paths               |                | a device from being mounted.                                           |\n+   | Paths               |                | a device from being mounted.  See below for examples of path length    |\n+   |                     |                | calculation.                                                           |\n    +---------------------+----------------+------------------------------------------------------------------------+\n    | Device Filesystem   | 63 bytes       | `devfs(8)                                                              |\n    | Paths               |                | <https://www.freebsd.org/cgi/man.cgi?query=devfs&sektion=8>`__ device  |\n    |                     |                | path lengths (*SPECNAMELEN*). Longer paths can prevent a device from   |\n    |                     |                | being created.                                                         |\n    +---------------------+----------------+------------------------------------------------------------------------+\n \n+Care is needed with regard to ZFS snapshots. **If the mounted path length for a snapshot exceeds 88 characters, \n+then the snapshot and its data will be safe but inaccessible until its mounted path length is reduced**. \n+Typically this is rectified by renaming (shortening) the dataset, snapshot, or mountpoint, so that the path length is\n+below the 88 byte limit. Note that ZFS snapshots are automatically mounted on demand within hidden :file:`/.zfs/snapshot/`\n+directories, and can also be manually mounted using the command line. The 88 byte limit affects both types of 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88 byte limit with examples","user":{"login":"stilez","id":3777403,"avatar_url":"https://avatars0.githubusercontent.com/u/3777403?v=4","gravatar_id":"","url":"https://api.github.com/users/stilez","html_url":"https://github.com/stilez","followers_url":"https://api.github.com/users/stilez/followers","following_url":"https://api.github.com/users/stilez/following{/other_user}","gists_url":"https://api.github.com/users/stilez/gists{/gist_id}","starred_url":"https://api.github.com/users/stilez/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/stilez/subscriptions","organizations_url":"https://api.github.com/users/stilez/orgs","repos_url":"https://api.github.com/users/stilez/repos","events_url":"https://api.github.com/users/stilez/events{/privacy}","received_events_url":"https://api.github.com/users/stilez/received_events","type":"User","site_admin":false},"body":"This is important so a user can understand what exact path components are measured, when considering if a snapshot will be accessible, or fixing a snapshot that isn't accessible.\r\n\r\nAs Dru noted on forum, it isn't well documented ( https://forums.freenas.org/index.php?threads/snapshot-mounting-limits-clarification-of-freenas-guide.60633 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