growiso doesn't close session sometimes

[Morgwai Kotarbinski <morgwai@tls.pl>]

hi there,
i've got problem with growisofs from dvd+rw-tools-5.21.4.10.8 package - 
it doesn't close session sometimes. here is what i have done and what 
has happened:

> morgwai@darkstorm:~ $ growisofs -M /dev/cdrom1 -U -J -joliet-long -r /home/morgwai/zdjecia/tmp/
> Executing 'mkisofs -C 16,625856 -M /dev/fd/3 -U -J -joliet-long -r /home/morgwai/zdjecia/tmp/ | builtin_dd of=/dev/cdrom1 obs=32k seek=39116'
> Warning: creating filesystem that does not conform to ISO-9660.
> INFO:   UTF-8 character encoding detected by locale settings.
>         Assuming UTF-8 encoded filenames on source filesystem,
>         use -input-charset to override.
> Rock Ridge signatures found
> Unknown file type (unallocated) /home/morgwai/zdjecia/tmp/.. - ignoring and continuing.
> /dev/cdrom1: "Current Write Speed" is 4.6x1385KBps.
>  92.80% done, estimate finish Mon Nov 29 23:53:20 2004
(...)
>  99.42% done, estimate finish Mon Nov 29 23:53:38 2004
> Total translation table size: 0
> Total rockridge attributes bytes: 139822
> Total directory bytes: 278380
> Path table size(bytes): 1166
> Max brk space used e6000
> 678914 extents written (1326 MB)
> builtin_dd: 53072*2KB out @ average 1.8x1385KBps
> /dev/cdrom1: flushing cache
> /dev/cdrom1: closing track
> /dev/cdrom1: closing session
> morgwai@darkstorm:~ $ dvd+rw-mediainfo /dev/cdrom1
> INQUIRY:                [LITE-ON ][DVDRW SOHW-832S ][VS0A]
> GET [CURRENT] CONFIGURATION:
>  Mounted Media:         1Bh, DVD+R
>  Current Write Speed:   8.0x1385=11080KB/s
>  Write Speed #0:        8.0x1385=11080KB/s
>  Write Speed #1:        6.0x1385=8310KB/s
>  Write Speed #2:        4.0x1385=5540KB/s
>  Write Speed #3:        2.4x1385=3324KB/s
> GET [CURRENT] PERFORMANCE:
>  Write Performance:     3.2x1385=4432KB/s@0 -> 4.5x1385=6232KB/s@623807
>  Speed Descriptor#0:    00/623807 R@4.5x1385=6232KB/s W@8.0x1385=11080KB/s
>  Speed Descriptor#1:    00/623807 R@4.5x1385=6232KB/s W@6.0x1385=8310KB/s
>  Speed Descriptor#2:    00/623807 R@4.5x1385=6232KB/s W@4.0x1385=5540KB/s
>  Speed Descriptor#3:    00/623807 R@4.5x1385=6232KB/s W@2.4x1385=3324KB/s
> READ DVD STRUCTURE[#0h]:
>  Media Book Type:       A1h, DVD+R book [revision 1]
>  Media ID:              RICOHJPN/R02
>  Legacy lead-out at:    2295104*2KB=4700372992
> READ DISC INFORMATION:
>  Disc status:           appendable
>  Number of Sessions:    2
>  State of Last Session: incomplete
>  "Next" Track:          2
>  Number of Tracks:      3
> READ TRACK INFORMATION[#1]:
>  Track State:           invisible
>  Track Start Address:   0*2KB
>  Free Blocks:           0*2KB
>  Track Size:            623808*2KB
>  ROM Compatibility LBA: 265696
> READ TRACK INFORMATION[#2]:
>  Track State:           invisible
>  Track Start Address:   625856*2KB
>  Free Blocks:           0*2KB
>  Track Size:            53072*2KB
>  ROM Compatibility LBA: 265696
> READ TRACK INFORMATION[#3]:
>  Track State:           blank
>  Track Start Address:   678944*2KB
>  Next Writable Address: 678944*2KB
>  Free Blocks:           1616160*2KB
>  Track Size:            1616160*2KB
>  ROM Compatibility LBA: 265696
> FABRICATED TOC:
>  Track#1  :             14@0
>  Track#AA :             14@623808
>  Multi-session Info:    #1@0
> READ CAPACITY:          623808*2048=1277558784

it also sometimes happens when burning initial session (growisofs -Z...) 
i hadn't this problem when i was using dvd+rw-tools-5.17.4.8.6. i also 
have similar problem with ASUS DRW-1604P drive.
as i mentioned it _doesn't_ happen every time. sometimes session is 
closed properly but i don't know what it depends on.
i use 'close' program provided by Andy Polyakov as a workaround to bug 
in dvd+rw-tools-5.19 to close such unclosed sessions and it works 
everytime i use it, but i'd rather not to have to use it :)

  regards

    morgwai