We have an APAR for this, IC36163:

ABSTRACT
MAC CLIENT MAY QUIT WHEN PROCESSING A FILE OR FOLDER WHOSE OWNER
HAS A 'SHORTNAME' THAT IS 11 OR MORE CHARACTERS IN LENGTH.

ERROR DESCRIPTION
The TSM Mac client may quit ("disappear") while attempting to
process a file or folder whose owner has a 'shortname' that
exceeds 10 characters (i.e. is 11 characters or more in length).

There is no error or crash log generated when this occurs.

LOCAL FIX:
Two possibilities:

1) Change the user's shortname. Netinfo can be used to change
   the information about the user. The user's home directory
   will need to be renamed to match the new shortname. NOTE: The
   System Preferences Accounts tool can not be used to modify
   the user's shortname.

2) Exclude the files and folders owned by the user whose short
   name is 11 characters or more in length. Use "exclude" to
   exclude the files, and "exclude.dir" to exclude the folders.
   NOTE: While this will prevent the client from shutting down,
   it also prevents the owner's files and folders from being
   backed up; and any existing backups of these objects will be
   expired the next time incremental backup runs. Of the two
   circumventions, #1 is preferred.

A fix is currently targeted for 5.1.6 and 5.2.0, although that is subject
to change at IBM's discretion.

Regards,

Andy

Andy Raibeck
IBM Software Group
Tivoli Storage Manager Client Development
Internal Notes e-mail: Andrew Raibeck/Tucson/IBM@IBMUS
Internet e-mail: storman AT us.eyebm DOT com (change eye to i to reply)

The only dumb question is the one that goes unasked.
The command line is your friend.
"Good enough" is the enemy of excellence.




Craig Sheppard <Craig.Sheppard AT DAL DOT CA>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
04/21/2003 10:08
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: OSX, TSM 5.1.5.0 Not backing up long shortnames



I have installed 5.1.5.13, but the problem still remains (even after a
restart).  Is there a procedure I should follow?  Delete prefs, etc?
Thanks!

        Craig

On Tuesday, April 15, 2003, at 02:33  PM, Gretchen L. Thiele wrote:

> You must be at v5.1.5.13, available in the patches directory of the
> ftp site.  This was a known problem with v5.1.5.0.
>
> Craig Sheppard wrote:
>> Hi - Just upgraded to MacOS X Server 10.2.  TSM will not back up
>> folders whose owners have more than 16 characters in their shortname.
>> The program just fails (crashes without even generating a crashlog -
>> just disappears).  Our scheduled backups are the same - the scheduler
>> just dies, and we get an 'in progress' in the morning report.  The log
>> shows thew last files that were backed up, then nothing.
>
> Gretchen Thiele
> Princeton University