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Add more details to the description of the fsid_guid dataset property
6333 ZFS should let the user specify or modify the fsid_guid of a dataset

*** 1059,1068 **** --- 1059,1076 ---- .Sy filesystem_limit , but rather imposes an additional limit. This feature must be enabled to be used .Po see .Xr zpool-features 5 .Pc . + .It Sy fsid_guid Ns = Ns Sy value Ns + Sets the dataset fsid_guid. The fsid_guid is a 64-bit unsigned integer, used to + construct the vfs id when mounting a dataset. + This property should only be set if you need the vfs id to be identical on two + systems, for example in a NFS migration scenario. + When the fsid_guid is changed for a file system, the file system and any + children that inherit the mountpoint are unmounted, then remounted. If the + file system was shared, existing NFS clients will require a remount. .It Sy mountpoint Ns = Ns Pa path Ns | Ns Sy none Ns | Ns Sy legacy Controls the mount point used for this file system. See the .Sx Mount Points section for more information on how this property is used. .Pp