Re: [PATCH] Adding the nfs4_use_min_auth module parameter

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On Fri, Nov 08, 2013 at 10:46:26AM -0800, Chuck Lever wrote:
> The fly in this ointment is allowing clients with no keytab to mount
> with sec=krb5.
> 
> We can use ENOKEY to allow lease management with AUTH_SYS but data
> access using Kerberos and a user's credential.

So "mount -osec=krb5*" means "use krb5* or stronger for everything",
unless you have no keytab in which case it means "use krb5* for all file
access but allow auth_sys for lease maintenance".  Huh.  I guess that
works.

--b.

> 
> Otherwise, a user has to login as root, kinit as themselves, and then
> mount.  That makes automounter configurations a little dodgy.
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