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Special Forums Hardware Filesystems, Disks and Memory NFSv4 on Netapp and Redhat 5.3 as Client Post 302357561 by achenle on Wednesday 30th of September 2009 07:18:23 AM
Old 09-30-2009
What is the reason you want to use NFSv4? If you don't have problems with NFSv3 and you don't have a good reason where you have to use NFSv4, just use NFSv3.
 

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NFS4MAPID(8)						    BSD System Manager's Manual 					      NFS4MAPID(8)

NAME
nfs4mapid -- shows NFSv4 mappings from uids or gids to over the wire string names and string names to uids or gids. SYNOPSIS
nfs4mapid [-G] string name nfs4mapid [-G] GUID nfs4mapid -u uid nfs4mapid -g gid DESCRIPTION
In the first form, nfs4mapid shows translations from NFSv4 string representations of users, and with the -G option, groups, to the corre- sponding local uids and gids. In the second form shows the translations from opendirectoy GUIDS to NFSv4 strings. The well known strings names (which are distinguished by a trailing '@' ), such as "OWNER@" and "GROUP@" are represented locally by GUIDs and may not map to uids or gids. To map those GUIDS to NFSv4 strings use this form. The first form can be used to map the well known ids to GUIDs. nfs4mapid does this by looking at the trailing '@' sign. Note that NFSv4 well known names are always groups and are used in ACEs. In the third form, it shows the mapping from uids to the NFSv4 user@domain form. Similarly, in the last form it shows the mapping from gids to the NFSv4 group@domain. nfs4mapid will also show the intermediate GUID translation if used. The NFSv4 domain name should be set with dscl(1). See opendirectory(8) for instructions. -G Map an NFSv4 string to a gid. -u Map a uid to an NFSv4 user@domain string. -g Map a gid to an NFSv4 group@domain string. NOTES
nfs4mapid uses a privileged nfs client system call to pass the translation request down to the kernel, so results will be the same as a request coming from an NFSv4 server. Because of this, nfs4mapid must be run with root privileges. SEE ALSO
dscl(1), nfs(5), opendirectoryd(8), mount_nfs(8), HISTORY
The nfs4mapid utility first appeared in OSX 10.10 BSD
February 20, 2014 BSD
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