connections.tdb keeps getting corrupted. v2.2.1a

[MCCALL,DON (HP-USA,ex1)]

Hi Melvin,
thanks for the offer.  I THINK I am pretty much able to reproduce a
corruption in the connections.tdb almost at will now on an HP-UX system,
using a slow, memory crunched ux machine, and another faster machine that
runs a script to spawn about 100 smbclient ... -c dir  processes to beat up
on the samba server.
The fact that we are seeing this not only in the connections.tdb, but also
locking.tdb and messages.tdb leads me to suspect that we have some sort of
data type mismatch somewhere in the tdb code or header files, but 
I still have not tracked the root cause down.
I'm still plugging away at it...
Don

-----Original Message-----
From: Melvin T. Melvin [mailto:melvintmelvin at yahoo.com]
Sent: Thursday, August 30, 2001 11:26 AM
To: MCCALL,DON (HP-USA,ex1)
Subject: RE: connections.tdb keeps getting corrupted. v2.2.1a


Don,

         I am at your service as to providing a test platform. You tell me 
what kernel parameters, what compile options, what code, and I will test it 
for you. I have access to both 32 and 64 bit HP platforms.

-A

At 10:37 AM 8/30/2001, you wrote:
>Hi Melvin,
>We have a number of people on the list experiencing this problem - so far
>all the reports I have seen involve HP-UX os'es, BUT, they range all the
way
>from 9.05, 10.20 to 11.00...  I'm trying to create an environment where I
>can dup the corruption.  I'd be very interested if people could check their
>logs to see if any NON-HP-UX platforms are being affected.
>Two things you might try before backing down to a different version:
>1. if you are using 2.2.1a, make sure you compile it WITHOUT mmap support.
>we KNOW that mmap is going to fail
>on HP-UX; the CVS version has a new smb.conf parameter, use mmap = no (no
by
>default on an HP-UX system) that will allow this to be configured.
>2. make sure that your nflocks is plenty big (1024 or better) in your
>kernel.
>
>I'll post on the list if I get any further with this corruption issue, in
>the meantime, ANYONE else out there experiencing these types of issues,
>please let us know.
>
>Thanks,
>Don
>
>-----Original Message-----
>From: Melvin T. Melvin [mailto:melvintmelvin at yahoo.com]
>Sent: Thursday, August 30, 2001 10:19 AM
>To: samba at lists.samba.org
>Cc: samba-technical at lists.samba.org
>Subject: Fwd: connections.tdb keeps getting corrupted. v2.2.1a
>
>
>I noticed another person having the same problems, does anyone have any
>ideas? Should I backout to another version?
>Hi -
>
> >I have an HP/9000 v11.0 system running a home compiled
> >(gcc) version of Samba v2.2.1a, and I've been getting
> >errors like this for a couple of weeks. When it
> >happens no new users can connect, and clients error
> >saying "Number of concurrent connections reached" The
> >smbd.log follows:
> >
> >
> >[2001/08/20 00:25:36, 0] tdb/tdbutil.c:tdb_log(342)
> >   tdb(/usr/local/samba/var/locks/connections.tdb):
> >rec_read bad magic 0xd9fee666
> >  at offset=7568
> >[2001/08/20 00:25:36, 0]
> >smbd/connection.c:claim_connection(158)
> >   claim_connection: traverse of connections.tdb failed
> >with error Corrupt databa
> >se.
> >[2001/08/20 00:25:37, 0]
> >smbd/password.c:authorise_login(915)
> >   authorise_login: rejected invalid user poophead
> >[2001/08/20 00:25:37, 2]
> >smbd/service.c:make_connection(318)
> >   Invalid username/password for ipc$ [poophead]
> >[2001/08/20 00:25:37, 2]
> >smbd/server.c:exit_server(448)
> >   Closing connections
> >[2001/08/20 00:25:37, 0]
> >smbd/connection.c:yield_connection(62)
> >   yield_connection: tdb_delete failed with error
> >Record does not exist.
> >[2001/08/20 00:25:44, 2]
> >smbd/reply.c:reply_special(93)
> >---
> >Smb.conf:
> >
> ># Global parameters
> >[global]
> >         workgroup = WK50
> >         netbios name = ASK-HPUX
> >         server string = OS/2 1.31a
> >         security = SERVER
> >         map to guest = Bad Password
> >         password server = passwd_server
> >         log level = 2
> >         syslog = 3
> >         max smbd processes = 64
> >         max open files = 1000
> >         printcap name = lpstat
> >         local master = No
> >         wins server = passwd_server
> >         guest account = html
> >         valid users = melvin
> >         admin users = melvin
> >
> >[sources]
> >         comment = Source Code Respository
> >         path = /sources
> >         #guest account = html
> >         valid users =
> >         write list = melvin
> >         guest ok = Yes
> >
> >[tmp]
> >         comment = Temporary
> >         path = /tmp
> >
> >[ask]
> >         comment = ME Only
> >         path = /ask
> >         valid users = melvin
> >         read only = No
> >         browseable = No
> >
> >[temp]
> >         comment = CD Creation temporary space
> >         path = /temp
> >         guest account = html
> >         read only = No
> >         guest ok = Yes
> >         oplocks = No
> >         level2 oplocks = No
> >         strict locking = Yes
> >---
> >
> >Any and all assistance would be greatly appreciated.
> >