[Bug-xorriso] Follow-Up on Burning Problems Debian Testing

[Jape Person]

Hi, Thomas.

I'm sending this information as per our recent conversation on the 
debian-user list.

I'm happy to say that converting my tar.gz data archives to .iso format 
and then using xorriso to burn those to DVD+RW were successful this past 
weekend.

I burn two such data sets (approximately 4 gigabytes each) every 
weekend. The first one this time succeeded without error. Unfortunately 
I didn't think to record its output to send to you.

The second dataset failed the first time with the following output:

----------8<----------
address@hidden:~$ xorriso -as cdrecord -v dev=/dev/sr0 blank=as_needed 
20150822chip.iso
xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.

Drive current: -outdev '/dev/sr0'
Media current: DVD+RW
Media status : is blank
Media summary: 0 sessions, 0 data blocks, 0 data, 4483m free
xorriso : NOTE : -blank as_needed: no need for action detected
Beginning to write data track.
xorriso : UPDATE : Formatting. Working since 0 seconds
...
xorriso : UPDATE :  512 of 3665 MB written (fifo 97%) [buf  94%]   2.4x.
xorriso : UPDATE :  513 of 3665 MB written (fifo 99%) [buf  94%]   1.0x.
xorriso : UPDATE :  513 of 3665 MB written (fifo 99%) [buf  94%]   0.0x.
xorriso : UPDATE :  517 of 3665 MB written (fifo 94%) [buf  94%]   2.8x.
xorriso : UPDATE :  522 of 3665 MB written (fifo 99%) [buf  94%]   4.0x.
libburn : FATAL : SCSI error on write(268416,16): [3 0C 00] Medium 
error. Write error.
xorriso : FATAL : -abort_on 'FAILURE' encountered 'FATAL' during image 
writing
xorriso : NOTE : libburn has now been urged to cancel its operation
xorriso : UPDATE : Closing track/session. Working since 196 seconds
xorriso : FAILURE : libburn indicates failure with writing.
xorriso : NOTE : Gave up -outdev ''
xorriso : FAILURE : -as cdrecord: Job could not be performed properly.
xorriso : aborting : -abort_on 'FAILURE' encountered 'FATAL'
----------8<----------

At the position of the ellipsis I've omitted the majority of the output 
but noted that the burn ran at 2.4x all the way through until it failed. 
I showed just the last few lines of the burn run stdout before the summary.

Immediately after this, I used the same disc and same .iso image using 
the same xorriso command. The burn succeeded this time with a summary of:

----------8<----------
Writing to '/dev/sr0' completed successfully.

xorriso : NOTE : Re-assessing -outdev '/dev/sr0'
Drive current: -outdev '/dev/sr0'
Media current: DVD+RW
Media status : is written , is appendable
Media summary: 1 session, 1876700 data blocks, 3665m data,  817m free
----------8<----------

However, I noticed  that the burn speed was 4.0x all the way through 
this time, and on the first successful data burn to another DVD+RW disc. 
The burn speed throughout the unsuccessful try was 2.4x.

I'm sorry that I didn't get more information for you. I'm hard-pressed 
to do anything but take care of my medical issues right now. But I may 
get a breather from that in a couple of weeks. I can also provide info 
on my system specs if you need that.

At that time, if I'm able, I would be glad to try various different disc 
types. I have DVD+Rdl, DVD+RW, DVD-RW, and CD-R on hand. I'd also be 
glad to try other command line utilities and/or xfburn to see if they 
behave differently.

Thr three tries and two successes this weekend was HUGELY better than 
any previous try at burning in recent months, so xorriso is a keeper in 
my book.

For my own convenience I could consider just burning the data archives 
directly, or I could try to figure out how to produce the .iso images 
without doing a two-step process. Not sure yet if xorriso will do that, 
but I could install genisoimage and just create the .iso directly from 
the data directories.

Many thanks for your interest and help -- and also for the very 
effective xorriso package, which I only learned about recently.

Best regards,
Jape