messages.tdb growing to 4GB (4294971392 bytes)

[John H Terpstra - Samba Team]

Folks,

Has anyone else come across situations where messages.tdb grows to 4GB?

It seems smbd is no longer able to access this file after it reaches
this size.

-rw-------  1 root root   4294971392 2009-06-03 09:39 messages.tdb


tdbdump segfaults when trying to read it:

[root at sterling samba]# tdbdump messages.tdb
Segmentation fault


tdbbackup also segfaults when trying to access it:

[root at sterling samba]# tdbbackup messages.tdb
Segmentation fault


There is no log info at loglevel 1 regarding messages.tdb.  Any higher
log level seems to prevent occurrence, but damages samba performance also.

Samba 3.3.4, running on x86_64.

I do not know if it is relevant, but the site just increased memory from
4GB to 16GB to avoid going into swap.  There are up to 75 Windows XP
clients - previously going into about 500MB swap.

Any suggestions for how to diagnose this?

- John T.