[Bug 1458230] Re: libburn imposing 0.2x BD-R burn (5-6 hours)
Njorl
1458230 at bugs.launchpad.net
Mon Nov 16 15:15:38 UTC 2015
My work on verifying that this is genuinely a problem in libburn has
stalled. I apologise for this, but more so for having neglected to
provide a potentially critical interim update (which now follows upon
the prompting of someone having clicked a “me too” button).
Whilst I was in the process of preparing back-ups, for eventual storage
on BD-R (hence, in effect, gathering the materials for further testing
of the behaviour I'd reported), I became aware that all USB ports on the
“test” computer were version 1.1. (I have no explanation of how this
had eluded me for so very long.)
The laws of physics seem to establish that, for my initial burn, using
the k3b GUI, I must have got the ISO image onto an internal HD. My
memory is does not assist me with that point, though.
Certainly, all the libburn Blu-ray burns (but not the libburn DVD-RW
test burn) were of ISOs held on an external HD, connected via a USB port
(now recognised as USB 1.1). (I suspect I'd fooled myself by creating
the ISOs using a laptop, rather than the desktop in which the burner is
mounted!)
Pulling out some xoriso stats, from my earlier post:
xorriso : UPDATE : 10189 of 10189 MB written (fifo 0%) [buf 60%] 0.2x.
xorriso : UPDATE : Closing track/session. Working since 10285 seconds
My burn speed was 0.99 MB/s or 7.9 Mbit/s. USB 1.1 is rated at a
maximum of 12 Mbit/s. I could not find a definite answer as to whether
that is for the payload or for payload + error correction + control, but
it does not seem unreasonable to think the 7.9 Mbit/s was the limit of
my USB connection.
I subsequently put a USB 2.0 card into the PC, but it will be a few
weeks before I can pick up the testing again. For the moment, I think
the most likely conclusion for this bug report is closure on grounds of
raiser's idiocy. However, I suggest that anyone, who feels he may be
experiencing this “bug”, posts his detailed observations (ideally
without missing the obvious).
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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:
Confirmed
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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