Re: [PATCH 0/2] Support for Numeric Representations of UIDs and GIDs.

[Steve Dickson <SteveD@redhat.com>]

On 08/17/2010 03:51 PM, Tom Haynes wrote:
> Steve Dickson wrote:
>> In recent NFS v2/v3 to v4 transitions, one of the sticking points have been that fact v4 uses strings in the format
>> of "user@domain" instead of 32bit integers for uids and gids.
>>
>> When the string can not be mapped, its mapped to the 'nobody'
>> user which is not optimal for things like backup servers and
>> such where the ids will not be know by both sides.
>>
>> So this patch series enables the server to send out numeric string of uids and gids that do not have the '@domain' part.
>> The series also adds functionality to the client that parse these
>> type of strings and will use the numeric representation
>> of the ids iff the id exists on the client, which is sightly different that Solaris. Solaris dose not have that
>> "id must exist" restriction.
>>   
> 
> No, Solaris does have that restriction.
I thought so too.... but when I had an Open Solaris client 
access an directory, on a Linux server, that was owned by a 
user that was non-existent on either the server or client, 
I got the numeric representation as the owner.... 
Basically:

osol# mount Linux-server:/home /mnt/home
osol# ls -ld /mnt/home/noid
drwxr-xr-x+  2 111      111         4096 Aug 17 11:37 /mnt/home/noid/
osol# grep 111 /etc/passwd
osol#

steved.