Bug 154936

Summary:	NFS limited to 16 groups
Product:	Gentoo Linux	Reporter:	Jakub Sadowski <JakubSadowski>
Component:	[OLD] Server	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED INVALID
Severity:	normal	CC:	TenToThe8th
Priority:	Highest
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://forums.gentoo.org/viewtopic-t-236320-highlight-.html
Whiteboard:
Package list:		Runtime testing required:	---

Description Jakub Sadowski 2006-11-12 14:22:40 UTC

The NFSv3 server and client only support the first 16 groups assigned to a user.   This is the source of a lot of grief for small implementations as the symptoms are not intuitive (i.e. files, seemingly in a random fashion, are not accessible).
Is this a limitation of the protocol or the current (version 3) implementation?  Hopefully it's just an implementation issue and can be corrected.

Kernel version is 2.6.18-gentoo-r2 and nfs-utiles is 1.0.6-r6

To reproduce this problem, presumably on any platform, simply:
1) Set up NFSv3 server/client.
2) Create a user and add them to 17 groups (in GID order).
3) Make a file/folder owned by another user, but which the user should be able to access via the 17th group they've been assigned.
4) They will be (wrongfully) denied access.

(I won't be providing additional information as I think it is moot in regards to this bug)

Comment 1 Jakub Moc (RETIRED) gentoo-dev

2006-11-12 14:26:11 UTC

*** Bug 154935 has been marked as a duplicate of this bug. ***

Comment 2 Jakub Moc (RETIRED) gentoo-dev

2006-11-12 14:27:24 UTC

Yes, it is. Not a bug, and definitely not a Gentoo specific one.

See http://marc.theaimsgroup.com/?t=115632481900001&r=1&w=2 e.g.

Comment 3 Jakub Moc (RETIRED) gentoo-dev

2007-12-02 09:11:16 UTC

*** Bug 200972 has been marked as a duplicate of this bug. ***