[Bug-tar] tar, multi-volume and long filenames

[Ingo von Borstel]

Hi there,

I just discovered a phenomenon that tar exits with errorcode one in my
backup script - and I'm not sure about the cause. The situation is as
follows:

address@hidden:~/backup> tar --version
tar (GNU tar) 1.15.1

My backupscript basically looks like this, omitting variable initilization:

### begin shell script ###
tar --create --one-file-system
--exclude-from=/home/ingo/backup/homeingo_exclude.txt
--file=$backupfilename --tape-length=2000000 --recursion --multi-volume
--new-volume-script="/home/ingo/backup/volumechange.sh
$backupfileprefix" --totals /home/ingo/*

/home/ingo/backup/volumechange.sh $backupfileprefix
### end shell script ###

Now that works fine for four volumes, the fifth is only created as a
zero sized file and the script / tar exits with a cron notification that
reads like

### begin error message ###
From: Cron Daemon <address@hidden>
To:  <address@hidden>
Subject: Cron <address@hidden> /home/name/backup/makeremotebackup.sh
tar: Removing leading `/' from member names
tar:
home/name/icaps/pfc092005/auswertung/flug1_10/13.09.2005_parabola10_overview_frame00220_T04095175.bmp:
file name
too long to be stored in a GNU multivolume header
tar: Error is not recoverable: exiting now
### end error message ###

The mentioned file name is the last file listed in the 4th volume of the
created multi volume archive. The fifth is created with zero bytes of
length. Any ideas why I experience this behaviour? Filenames of the same
length are stored without any problems in the first four volumes of the
archive.

Best regards,
Ingo von Borstel

-- 
Ingo von Borstel                <address@hidden>
Institut für Geophysik          Tel: +49 (0)531 - 391 7236
 und extraterrestrische Physik  Fax: +49 (0)531 - 391 5220
Mendelssohnstraße 3             
D-38106 Braunschweig
Germany

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