very large dumps in holding area

[Vicki Stanfield]

I am having a problem with amanda leaving very large dumps in the 
holding area and not writing them to tape. The tapes are 20/40GB tapes, 
but a 23GB dump doesn't get written even though there is a blank tape 
available. Even if I try to flush this dump, it runs for a long time and 
then errors again with "No space left on device."

Here is the log that I got.
--------------------------------------------------------
The dumps were flushed to tapes Progeny01-0043, Progeny01-0044.
*** A TAPE ERROR OCCURRED: [[writing file: No space left on device]].
Some dumps may have been left in the holding disk.
Run amflush again to flush them to tape.
The next 2 tapes Amanda expects to used are: Progeny01-0020, Progeny01-0021.
FAILURE AND STRANGE DUMP SUMMARY:
 morimoto   /net/morimoto/home lev 5 FAILED [out of tape]
STATISTICS:
                         Total       Full      Daily
                       --------   --------   --------
Estimate Time (hrs:min)    0:00
Run Time (hrs:min)         3:39
Dump Time (hrs:min)        0:00       0:00       0:00
Output Size (meg)           0.0        0.0        0.0
Original Size (meg)         0.0        0.0        0.0
Avg Compressed Size (%)     --         --         --
Filesystems Dumped            0          0          0
Avg Dump Rate (k/s)         --         --         --
Tape Time (hrs:min)        0:03       0:00       0:03
Tape Size (meg)           361.2        0.0      361.2
Tape Used (%)               2.2        0.0        2.2   (level:#disks ...)
Filesystems Taped            14          0         14   (1:13 3:1)
Avg Tp Write Rate (k/s)  2408.5        --      2408.5
USAGE BY TAPE:
 Label                Time      Size      %    Nb
 Progeny01-0043       0:03     361.2    2.2    14
 Progeny01-0044       0:00       0.0    0.0     0
----------------------------------------------------------------------------------------
There are two amanda directories in my holding area:
20050420 is 28G
20050421 is 3.2G
How do I get amanda to readjust what gets backed up when to make it more 
even over the full tape cycle? Is it possible with amadmin? When I do an 
amadmin balance, I get this:

due-date  #fs    orig KB     out KB   balance
----------------------------------------------
4/21 Thu    3   37603890   26119168   +330.0%
4/24 Sun    1   14116820   14116820   +132.4%
4/25 Mon    1   12436100   11076062    +82.3%
4/26 Tue    1    7464340    7464340    +22.9%
4/30 Sat    2   12133630   11246536    +85.1%
5/01 Sun    3     536890     452308    -92.6%
5/02 Mon    2    5105460    4698652    -22.7%
5/03 Tue    6   12883440    8596350    +41.5%
5/04 Wed    4   10457560    8194571    +34.9%
5/07 Sat    3   24676810   23458226   +286.2%
----------------------------------------------
TOTAL       26  137414940  115423033   6074896
 (estimated 19 runs per dumpcycle)
(3 filesystems overdue, the most being overdue 146 days)
which doesn't seem balanced at all.
Vicki