How does NFS set the owner and group for a mapped folder ?

[ch123]

I have 2 servers

/etc/fstab file on server1:
server2:/var/www/html/folder1 /mnt/share1 nfs owner,rw 0 0

/etc/exports file on server2:
/var/www/html/folder1 server1(rw,sync)


On server 1, when folder isn't mount

ls -al
drwxr-xr-x 2 dummy7 dummy7 4096 Aug 28 14:31 share1

vi /etc/passwd
dummy2:504:504::/home/dummy2:/bin/bash
dummy7:510:510::/home/dummy7:/bin/bash

On server 2

vi /etc/passwd
dummy2:508:508::/home/dummy2:/bin/bash
dummy7:510:511::/home/dummy7:/bin/bash


I don't understand why , when I run "service netfs restart" the owner rights on the mounted folder on server 1 change from user dummy7 to dummy2. How is that set ?

drwxr-xr-x 2 dummy7 dummy7 4096 Aug 28 14:31 share1

to

drwxr-xr-x 2 dummy2 dummy7 11222 Aug 26 17:06 share1


Thanks for your help .

[matonb]

Hi ch123,

NFS uses user and group ID's i.e. the numbers not the names.

What has happend is that the user and group id's don't match on both servers.