[Bug 1458230] Re: libburn imposing 0.2x BD-R burn (5-6 hours)
Njorl
1458230 at bugs.launchpad.net
Mon May 25 01:18:56 UTC 2015
Thank you very much for looking into this, and I'll apologise for
having, at best, asymptotically approached the scientific method whilst
attempting to burn a set of back-up discs.
My first burn used the k3b GUI. I had to install the brandonsnider
cdrtools PPA, before it would even start writing to the disc (ref.
https://help.ubuntu.com/community/CdDvd/Burning#Blu-Ray_Burning). This
burn proceeded at a reasonable speed but, contrary to (my understanding
of) my choice of settings, the disc was finalised (complete, not
appendable). (OK, my ISO was not much less than the disc capacity and I
won't open myself to ridicule by suggesting I mourned this loss.
However, the final disc of the set was to be only half full, and I also
wanted to take the opportunity to learn the correct technique.) The
only interesting result, from dvd+rw-mediainfo on that disc, is that
Speed Descriptor#n is 00/12219391 c.f. 00/11826175 on the cdrskin and
xorriso burns I reported earlier. (I've no idea what that means and,
hence, the compass of “interesting” might be minimal.)
>From this, I turned to the command line (OK, I first tried to obtain silicon-empire, but it appears to have been pulled) and tried a couple of discs with growisofs, both of which were left in the desired, appendable, state, but at the cost of five to six hours' burning:
growisofs -Z /dev/sr0=disc02.iso
growisofs -speed=20 -Z /dev/sr0=disc03.iso
I'll admit, here, that some/all of my speed requests were ambitious.
I'd let myself be guided by the dvd+rw-mediainfo output, and forgotten
to check the paper, on the top of the spindle, which said “6x”.
So, I then turned to libburn (installing cdrskin & xorriso) :
cdrskin dev=/dev/sr0 -v padsize=300k blank=format_if_needed -multi disc04.iso
cdrskin dev=/dev/sr0 -v -v padsize=300k gracetime=60 blank=format_if_needed speed=10 --adjust_speed_to_drive -multi disc05.iso
xorrecord -v dev=/dev/sr0 speed=26970k fs=8m -multi --grow_overwriteable_iso blank=as_needed padsize=300k disc06.iso
And that was where I'd reached when I filed the bug report. (With
thanks to ~/.bash_history!)
In answer to your other questions:
I think the xorriso run did format the disc. The dvd+rw-mediainfo output is very similar to that for the cdrskin disc. (Sorry I did not paste that on the original report.)
Reading back the discs seemed fairly fast. I'd checked the md5sums after each burn. I'll capture a more formal metric, if necessary, but I'm confident in saying reading is fine.
I haven't tried disabling defect management. That doesn't sound attractive, but I accept it could be a valuable investigative test.
I've just tried a DVD-RW 2x, in the drive. Performance seemed consistent with my experience with my DVD writers, and I calculated it as proceeding about twice as quickly as the problem BD-Rs.
Subsequent to my posting of the problem report, it did occur to me to check the version details the programs declare (rather than just relying on the package headline):
cdrskin --version
cdrskin 1.3.8 : limited cdrecord compatibility wrapper for libburn
Cdrecord 2.01a27 Emulation. Copyright (C) 2006-2014, see libburnia-project.org
System adapter : internal GNU/Linux SG_IO adapter sg-linux
libburn interface : 1.3.8
libburn in use : 1.3.8
cdrskin version : 1.3.8
Version timestamp : 2014.06.28.060001
Build timestamp : -none-given-
xorrecord --version
xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.
Cdrecord 2.01-Emulation Copyright (C) 2013 see libburnia-project.org xorriso
xorriso 1.3.2
ISO 9660 Rock Ridge filesystem manipulator and CD/DVD/BD burn program
Copyright (C) 2013, Thomas Schmitt <…@gmx.net>, libburnia project.
xorriso version : 1.3.2
Version timestamp : 2013.08.07.110001
Build timestamp : -none-given-
libisofs in use : 1.3.8 (min. 1.3.6)
libjte in use : 1.0.0 (min. 1.0.0)
libburn in use : 1.3.8 (min. 1.3.4)
libburn OS adapter: internal GNU/Linux SG_IO adapter sg-linux
libisoburn in use : 1.3.2 (min. 1.3.2)
Provided under GNU GPL version 2 or later.
There is NO WARRANTY, to the extent permitted by law.
libisoburn is rather stale, but the change log does not show anything
pertinent to my problem as having subsequently been addressed. (Also,
cdrskin --version did not mention that library, which could truly take
it out of the equation.)
I will insert the balance of the output I captured, as separate
“comments”, in the belief this will aid navigation.
Thank you very much, once again.
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https://bugs.launchpad.net/bugs/1458230
Title:
libburn imposing 0.2x BD-R burn (5-6 hours)
Status in libburn package in Ubuntu:
New
Bug description:
Note: libburn 1.3.8 (Ubuntu 15.04 AMD64)
Confident of correctly observing the symptom (in four / four tests
with BD-R 25 GB), but apologise for pointing a finger that may be
stabbing in the dark.
dvd+rw-mediainfo /dev/sr0
INQUIRY: [PIONEER ][BD-RW BDR-209M][1.20]
GET [CURRENT] CONFIGURATION:
Mounted Media: 41h, BD-R SRM
Media ID: CMCMAG/BA5
Current Write Speed: 12.0x4495=53940KB/s
Write Speed #0: 12.0x4495=53940KB/s
Write Speed #1: 10.0x4495=44950KB/s
Write Speed #2: 8.0x4495=35960KB/s
Write Speed #3: 6.0x4495=26970KB/s
Write Speed #4: 4.0x4495=17980KB/s
Write Speed #5: 2.0x4495=8990KB/s
Speed Descriptor#0: 00/12219391 R at 12.0x4495=53940KB/s W at 12.0x4495=53940KB/s
Speed Descriptor#1: 00/12219391 R at 10.0x4495=44950KB/s W at 10.0x4495=44950KB/s
Speed Descriptor#2: 00/12219391 R at 8.0x4495=35960KB/s W at 8.0x4495=35960KB/s
Speed Descriptor#3: 00/12219391 R at 6.0x4495=26970KB/s W at 6.0x4495=26970KB/s
Speed Descriptor#4: 00/12219391 R at 4.0x4495=17980KB/s W at 4.0x4495=17980KB/s
Speed Descriptor#5: 00/12219391 R at 2.0x4495=8990KB/s W at 2.0x4495=8990KB/s
:-[ READ BD SPARE INFORMATION failed with SK=5h/MEDIUM NOT FORMATTED]: Wrong medium type
READ DISC INFORMATION:
Disc status: blank
Number of Sessions: 1
State of Last Session: empty
"Next" Track: 1
Number of Tracks: 1
READ FORMAT CAPACITIES:
unformatted: 12219392*2048=25025314816
00h(3000): 11826176*2048=24220008448
32h(0): 11826176*2048=24220008448
32h(0): 5796864*2048=11871977472
32h(0): 12088320*2048=24756879360
READ TRACK INFORMATION[#1]:
Track State: invisible incremental
Track Start Address: 0*2KB
Next Writable Address: 0*2KB
Free Blocks: 12219392*2KB
Track Size: 12219392*2KB
READ CAPACITY: 0*2048=0
cdrskin --version
cdrskin 1.3.8 : limited cdrecord compatibility wrapper for libburn
Cdrecord 2.01a27 Emulation. Copyright (C) 2006-2014, see libburnia-project.org
System adapter : internal GNU/Linux SG_IO adapter sg-linux
libburn interface : 1.3.8
libburn in use : 1.3.8
cdrskin version : 1.3.8
Version timestamp : 2014.06.28.060001
Build timestamp : -none-given-
cdrskin dev=/dev/sr0 -v -v padsize=300k gracetime=60 blank=format_if_needed speed=10 --adjust_speed_to_drive -multi disc.iso
...
cdrskin: installed hard abort handler.
cdrskin: active drive number : 0 '/dev/sr0'
cdrskin: establishing fifo of 4194304 bytes
cdrskin: called as : cdrskin
cdrskin: status 1 burn_disc_blank "The drive holds a blank disc"
Current: BD-R sequential recording
cdrskin: beginning to format disc
Starting to write CD/DVD at speed 10 in real FORMAT mode for multi session.
Last chance to quit, starting real write in 0 seconds. Operation starts.
cdrskin: formatting done
Formatting time: 12.002s
cdrskin: beginning to burn disc
cdrskin: status 1 burn_disc_blank "The drive holds a blank disc"
Current: BD-R sequential recording
cdrskin: Write type : SAO
Track 01: data 23041 MB padsize: 300 KB
Total size: 23041 MB (2621:41.01) = 11797426 sectors
Lout start: 23041 MB (2621:43/01) = 11797576 sectors
Starting to write CD/DVD at speed 10 in real SAO mode for multi session.
Last chance to quit, starting real write in 0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
Starting new track at sector: 0
Track 01: 16520 of 23041 MB written (fifo 100%) [buf 66%] 0.2x.
xorrecord --version
xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.
Cdrecord 2.01-Emulation Copyright (C) 2013 see libburnia-project.org xorriso
xorriso 1.3.2
ISO 9660 Rock Ridge filesystem manipulator and CD/DVD/BD burn program
Copyright (C) 2013, Thomas Schmitt <scdbackup at gmx.net>, libburnia project.
xorriso version : 1.3.2
Version timestamp : 2013.08.07.110001
Build timestamp : -none-given-
libisofs in use : 1.3.8 (min. 1.3.6)
libjte in use : 1.0.0 (min. 1.0.0)
libburn in use : 1.3.8 (min. 1.3.4)
libburn OS adapter: internal GNU/Linux SG_IO adapter sg-linux
libisoburn in use : 1.3.2 (min. 1.3.2)
Provided under GNU GPL version 2 or later.
There is NO WARRANTY, to the extent permitted by law.
xorrecord -v dev=/dev/sr0 speed=26970k fs=8m -multi --grow_overwriteable_iso blank=as_needed padsize=300k disc.iso
...
xorriso : UPDATE : 10186 of 10189 MB written (fifo 1%) [buf 78%] 0.2x.
xorriso : UPDATE : 10187 of 10189 MB written (fifo 1%) [buf 78%] 0.2x.
xorriso : UPDATE : 10188 of 10189 MB written (fifo 1%) [buf 60%] 0.2x.
xorriso : UPDATE : 10189 of 10189 MB written (fifo 0%) [buf 60%] 0.2x.
xorriso : UPDATE : Closing track/session. Working since 10285 seconds
xorriso : UPDATE : Closing track/session. Working since 10286 seconds
Writing to '/dev/sr0' completed successfully.
xorriso : NOTE : Re-assessing -outdev '/dev/sr0'
Drive current: -outdev '/dev/sr0'
Media current: BD-R sequential recording
Media status : is written , is appendable
Media summary: 1 session, 5216800 data blocks, 10.0g data, 12.6g free
xorriso:
Installed: 1.3.2-1.1
Candidate: 1.3.2-1.1
Version table:
*** 1.3.2-1.1 0
500 http://gb.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
100 /var/lib/dpkg/status
Any help gratefully received.
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