samba - Sep 2002 - Migrating from TNG to 2.2

Hi,
is there a HOWTO about migrating from Samba TNG to Samba 2.2?

I have problems with the user profiles on the Windows client machines,
they are recreated on login on the new Samba (2.2.5) machine. I copied
the SID (with smbpasswd), /etc/passwd and smbpasswd to the new machine,
and everything works fine, except for the user profiles.

Currently we are not using server-saved profile, but we will do in the
future.

Any ideas/hint about this problem?

Regards,
Martin
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Martin Hermanowski wrote:
> 
> Hi,
> is there a HOWTO about migrating from Samba TNG to Samba 2.2?
> 
> I have problems with the user profiles on the Windows client machines,
> they are recreated on login on the new Samba (2.2.5) machine. I copied
> the SID (with smbpasswd), /etc/passwd and smbpasswd to the new machine,
> and everything works fine, except for the user profiles.
It may well be becouse the user's RID changed.  Samba-TNG uses a
different RID caluation algorithm.  You could either update Samba 2.2 to
match, or use Samba 3.0alpha (aka Samba HEAD), and specify the RIDs in
LDAP.  (You would also need to set 'algorithmic rid base = some big
number' to avoid clashes between groups/unix users and these users).

Andrew Bartlett

-- 
Andrew Bartlett                                 abartlet@pcug.org.au
Manager, Authentication Subsystems, Samba Team  abartlet@samba.org
Student Network Administrator, Hawker College   abartlet@hawkerc.net
http://samba.org     http://build.samba.org     http://hawkerc.net

On Thu, Sep 05, 2002 at 03:56:54PM +0100, Tom Crummey
wrote:
> The problem is that when using a smbpasswd file, TNG and samba calculate
> the RID's in different ways. This means that the ownerships of all the
> files are wrong. We had this problem and we've had to change the
formula
> for calculating RIDs in samba.
> 
> The line you need to change is in 
> 
> source/include/rpc_misc.h
> 
> Line 63:
> #define RID_MULTIPLIER 2
> 
> Change to:
> 
> /* This was originally '2' - Lee Heagney 02/08/02 */
> #define RID_MULTIPLIER 4
This did work!

But I don't like the fact that I need to patch every future version of
Samba. These are all lines containing RID_MULTIPLIER:

,----[ grep -r RID_MULTIPLIER ]
| include/rpc_misc.h:#define RID_MULTIPLIER 4
| lib/domain_namemap.c:   return ((user_rid & (~RID_TYPE_USER))-
1000)/RID_MULTIPLIER;
| lib/domain_namemap.c:   return ((group_rid & (~RID_TYPE_GROUP))-
1000)/RID_MULTIPLIER;
| lib/domain_namemap.c:   return ((alias_rid & (~RID_TYPE_ALIAS))-
1000)/RID_MULTIPLIER;
| lib/domain_namemap.c:   uint32 grp_rid = ((((gid)*RID_MULTIPLIER) + 1000) |
RID_TYPE_GROUP);
| lib/domain_namemap.c:   uint32 alias_rid = ((((gid)*RID_MULTIPLIER) + 1000) |
RID_TYPE_ALIAS);
| lib/domain_namemap.c:   uint32 user_rid = ((((uid)*RID_MULTIPLIER) + 1000) |
RID_TYPE_USER);
| passdb/passdb.c:        return (uid_t)(((user_rid & (~USER_RID_TYPE))-
1000)/RID_MULTIPLIER);
| passdb/passdb.c:        return (uid_t)(((user_rid & (~GROUP_RID_TYPE))-
1000)/RID_MULTIPLIER);
| passdb/passdb.c:        return (((((uint32)uid)*RID_MULTIPLIER) + 1000) |
USER_RID_TYPE);
| passdb/passdb.c:  return (((((uint32)gid)*RID_MULTIPLIER) + 1000) |
GROUP_RID_TYPE);
`----

It seems that if I double the user/group ids in my /etc/(passwd|group)
it does work with a vanilla samba. So is this the way to go?

Regards,
Martin
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