[Lustre-discuss] rc -43: Identifier removed

[Per Lundqvist]

On Tue, 12 Feb 2008, Kit Westneat wrote:

> What the group upcall does is get all the secondary groups for the client
> user. There isn't enough room in the LNET message to send them all, so the MDS
> has to look it up in the /etc/groups. If you don't care about secondary groups
> at all, there is no harm in clearing the group_upcall param.
> 
> In theory, there also shouldn't be any harm in having different passwd and
> group files on the MDS and OSSes than on the clients. It's highly important,
> however, that all the clients have the same passwd and groups files. Otherwise
> the clients could interpret the same UID as different users, and people could
> go mucking around in each others files.

ok, thanks for clarifying this

/Per

-- 
Per Lundqvist

National Supercomputer Centre
Linköping University, Sweden

http://www.nsc.liu.se